Ok sweet.. thanks for your opinion man, i appreciate it!
Feral's Journal Of Insanity & Some Growing
AussieBlueTHC
Well-Known Member
I reckon that leaf issue is burn not lack of light. Lack of light your leaves will turn dark brown nearly rot like. Moisture is evaporaing quicker than it can be replenished is my guess. Light/fans/nutes. Just imo.
- Thread starter
- #4,943
If a leaf is completely shaded it will yellow off and die but if say another leaf blade is blocking that section of the leaf for a prolonged period the rest of the leaf will be fine but the covered section will be lighter, sometimes almost white if there isn't much movement through the canopy 
could be nute related but seems too blotchy to me unless its nutrient splash, not starting from the tips and not starting from the center like a typical nute related issue 
could be nute related but seems too blotchy to me unless its nutrient splash, not starting from the tips and not starting from the center like a typical nute related issue 
DobeWan
Well-Known Member
Feral, wanted to ask another Q about your 24K Gold if you remember. Mine are 56 days into flower and I'm thinking I'm going to start flush in the next week and end up around 70 days. IIRC you pulled at 70F and felt like it could have gone another few days even? I want a balanced effect and if I start flush by end of the week I'll be pulling around day 70 myself. Don't want them to be too couchlock.
Dogwash
Well-Known Member
Here's my girls last weekend, just before I cropped - day 70
Finally got me some feralesque colas going on
Finally got me some feralesque colas going on
Wow those fuckers are huge!! Some serious donky dicks there man!
Just found a great post..
FaderVader
Guest
#7 May 13, 2009 Last edited by a moderator: May 13, 2009
Breeding and growing cannabis strains is all about manipulating gene frequencies. Most strains sold by reputable breeders through seed banks are very uniform in growth. This means that the breeder has attempted to lock certain genes down so that the genotypes of those traits are homozygous.
Imagine that a breeder has two strains: Master Kush and Silver Haze. The breeder lists a few traits that they particularly like (denoted by *).
This means they want to create a plant that is homozygous for the following traits and call it something like Silver Kush.
Silver Kush
Pale green leaf Hashy smell Silver flowers Short plants
All the genetics needed are contained in the gene pools for Master Kush and Silver Haze.The breeder could simply mix both populations and hope for the best or try to save time, space and money by calculating the genotype for each trait and using the results to create an IBL.
The first thing the breeder must do is to understand the genotype of each trait that will be featured in ideal "Silver Kush" strain. In order to do this the genotype of each parent strain for that same trait must be understood. Since there are four traits that the breeder is trying to isolate, and 4x2 = 8, eight alleles make up the genotypes for these phenotype expressions and must be made known to the breeder.
Let's take the pale green leaf of the Silver Haze for starters. The breeder will grow out as many Silver Haze plants as possible, noting if any plants in the population display other leaf colors. If they do not, the breeder can assume that the trait is either homozygous dominant (SS) or recessive (ss). If other leaf colors appear within the population, the breeder must assume that the trait is heterozygous (Ss) and must be locked down through selective breeding. Let's look closely at the parents for a moment.
If both parents were SS there wouldn't be any variation in the population for this trait. It would already be locked-down and would always breed true without any variations.
With one SS parent and one Ss parent, the breeder would produce a 50:50 population — one group being homozygous (SS) and the other heterozygous (Ss).
If both parents were Ss, the breeder would have 25 percent SS, 50 percent Ss and 25 percent ss. Even though gene frequencies can be predicted, the breeder will not know with certainty whether the pale green leaf trait is dominant or recessive until they perform a test cross. By running several test crosses the breeder can isolate the plant that is either SS or ss and eliminate any Ss from the group. Once the genotype has been isolated and the population reduced to contain only plants with the same genotype, the breeding program can begin in earnest. Remember that the success of any cannabis growing and breeding program hinges on the breeder maintaining accurate records about parent plants and their descendants so that they can control gene frequencies.
Let's say that you run a seed bank company called PALE GREEN LEAF ONLY BUT EVERYTHING ELSE IS NOT UNIFORM LTD. The seeds that you create will all breed pale green leaves and the customer will be happy. In reality, customers want the exact same plant that won the cannabis cup last year or at least something very close. So in reality, you will have to isolate all the ^winning' traits before customers will be satisfied with what they're buying.
The number of tests it takes to know any given genotype isn't certain. You may have to use a wide selection of plants to achieve the goal, but nevertheless it is still achievable. The next step in a breeding program is to lock down other traits in that same population. Here is the hard part.
When you are working on locking down a trait you must not eliminate other desirable traits from the population. It is also possible to accidentally lock down an unwanted trait or eliminate desired traits if you are not careful. If this happens then you'll have to work harder to explore genotypes through multiple cross tests and lock down the desired traits. Eventually, through careful selection and record keeping you'll end up with a plant that breeds true for all of the features that you want. In essence, you will have your own genetic map of your cannabis plants.
Successful breeders don't try to map everything at once. Instead, they concentrate on the main phenotypes that will make their plant unique and of a high quality. Once they have locked down four or five traits they can move on. True breeding strains are created slowly, in stages. Well known true breeding strains like Skunk#l and Afghani#l took as long as 20 years to develop. If anyone states that they developed a true breeding strain in one or two years you can be sure that the genetics they started with were true breeding, homozygous, in the first place.
Eventually you will have your Silver Kush strain but only with the four genotypes that you wanted to keep. You may still have a variety of non-uniform plants in the group. Some may have purple stems, while others may have green stems. Some may be very potent and others not so potent. By constantly selecting for desired traits you could theoretically manipulate the strain into a true breeding strain for every phenotype. However, it is extremely unlikely that anyone will ever create a 100 percent true breeding strain for every single phenotype. Such a strain would be called a perfect IBL. If you're able to lock down 90 percent of the plant's phenotypes in a population then you can claim that your plant is an IBL.
The core idea behind the true breeding technique is to find what is known as a donor plant. A donor plant is one that contains a true breeding trait (homozygous, preferably dominant for that trait). The more locked down traits are homozygous dominant the better your chances of developing an IBL, which does not mean that the line of genetics will be true breeding for every trait, but rather that the strain is very uniform in growth for a high percentage of phenotypes.
Hope that helps
FaderVader
Guest
#7 May 13, 2009 Last edited by a moderator: May 13, 2009
Breeding and growing cannabis strains is all about manipulating gene frequencies. Most strains sold by reputable breeders through seed banks are very uniform in growth. This means that the breeder has attempted to lock certain genes down so that the genotypes of those traits are homozygous.
Imagine that a breeder has two strains: Master Kush and Silver Haze. The breeder lists a few traits that they particularly like (denoted by *).
This means they want to create a plant that is homozygous for the following traits and call it something like Silver Kush.
Silver Kush
Pale green leaf Hashy smell Silver flowers Short plants
All the genetics needed are contained in the gene pools for Master Kush and Silver Haze.The breeder could simply mix both populations and hope for the best or try to save time, space and money by calculating the genotype for each trait and using the results to create an IBL.
The first thing the breeder must do is to understand the genotype of each trait that will be featured in ideal "Silver Kush" strain. In order to do this the genotype of each parent strain for that same trait must be understood. Since there are four traits that the breeder is trying to isolate, and 4x2 = 8, eight alleles make up the genotypes for these phenotype expressions and must be made known to the breeder.
Let's take the pale green leaf of the Silver Haze for starters. The breeder will grow out as many Silver Haze plants as possible, noting if any plants in the population display other leaf colors. If they do not, the breeder can assume that the trait is either homozygous dominant (SS) or recessive (ss). If other leaf colors appear within the population, the breeder must assume that the trait is heterozygous (Ss) and must be locked down through selective breeding. Let's look closely at the parents for a moment.
If both parents were SS there wouldn't be any variation in the population for this trait. It would already be locked-down and would always breed true without any variations.
With one SS parent and one Ss parent, the breeder would produce a 50:50 population — one group being homozygous (SS) and the other heterozygous (Ss).
If both parents were Ss, the breeder would have 25 percent SS, 50 percent Ss and 25 percent ss. Even though gene frequencies can be predicted, the breeder will not know with certainty whether the pale green leaf trait is dominant or recessive until they perform a test cross. By running several test crosses the breeder can isolate the plant that is either SS or ss and eliminate any Ss from the group. Once the genotype has been isolated and the population reduced to contain only plants with the same genotype, the breeding program can begin in earnest. Remember that the success of any cannabis growing and breeding program hinges on the breeder maintaining accurate records about parent plants and their descendants so that they can control gene frequencies.
Let's say that you run a seed bank company called PALE GREEN LEAF ONLY BUT EVERYTHING ELSE IS NOT UNIFORM LTD. The seeds that you create will all breed pale green leaves and the customer will be happy. In reality, customers want the exact same plant that won the cannabis cup last year or at least something very close. So in reality, you will have to isolate all the ^winning' traits before customers will be satisfied with what they're buying.
The number of tests it takes to know any given genotype isn't certain. You may have to use a wide selection of plants to achieve the goal, but nevertheless it is still achievable. The next step in a breeding program is to lock down other traits in that same population. Here is the hard part.
When you are working on locking down a trait you must not eliminate other desirable traits from the population. It is also possible to accidentally lock down an unwanted trait or eliminate desired traits if you are not careful. If this happens then you'll have to work harder to explore genotypes through multiple cross tests and lock down the desired traits. Eventually, through careful selection and record keeping you'll end up with a plant that breeds true for all of the features that you want. In essence, you will have your own genetic map of your cannabis plants.
Successful breeders don't try to map everything at once. Instead, they concentrate on the main phenotypes that will make their plant unique and of a high quality. Once they have locked down four or five traits they can move on. True breeding strains are created slowly, in stages. Well known true breeding strains like Skunk#l and Afghani#l took as long as 20 years to develop. If anyone states that they developed a true breeding strain in one or two years you can be sure that the genetics they started with were true breeding, homozygous, in the first place.
Eventually you will have your Silver Kush strain but only with the four genotypes that you wanted to keep. You may still have a variety of non-uniform plants in the group. Some may have purple stems, while others may have green stems. Some may be very potent and others not so potent. By constantly selecting for desired traits you could theoretically manipulate the strain into a true breeding strain for every phenotype. However, it is extremely unlikely that anyone will ever create a 100 percent true breeding strain for every single phenotype. Such a strain would be called a perfect IBL. If you're able to lock down 90 percent of the plant's phenotypes in a population then you can claim that your plant is an IBL.
The core idea behind the true breeding technique is to find what is known as a donor plant. A donor plant is one that contains a true breeding trait (homozygous, preferably dominant for that trait). The more locked down traits are homozygous dominant the better your chances of developing an IBL, which does not mean that the line of genetics will be true breeding for every trait, but rather that the strain is very uniform in growth for a high percentage of phenotypes.
Hope that helps- Thread starter
- #4,948
Tbh it should be spot on around that many days mate, mine was a little bit couchlocky but being indica it was what I was looking for, which is why I would have liked to have ran her a bit longer
Here's my girls last weekend, just before I cropped - day 70
Finally got me some feralesque colas going on
Hell yeah man, done real well with them
I need to get some going again hehe, I have thrown the Sour White Jacks into flower so hoping they should produce some absolutely stunning colas, stacked right up already with about 9 sets of nodes and is probably only 9" tall 
Once I find a good producer I will be taking clones, reveg and then taking a whole heap of clones for a SOG may even do the same with the White Jack ive been revegging Just found a great post..
FaderVader
Guest
#7 May 13, 2009 Last edited by a moderator: May 13, 2009
Breeding and growing cannabis strains is all about manipulating gene frequencies. Most strains sold by reputable breeders through seed banks are very uniform in growth. This means that the breeder has attempted to lock certain genes down so that the genotypes of those traits are homozygous.
Imagine that a breeder has two strains: Master Kush and Silver Haze. The breeder lists a few traits that they particularly like (denoted by *).
This means they want to create a plant that is homozygous for the following traits and call it something like Silver Kush.
Silver Kush
Pale green leaf Hashy smell Silver flowers Short plants
All the genetics needed are contained in the gene pools for Master Kush and Silver Haze.The breeder could simply mix both populations and hope for the best or try to save time, space and money by calculating the genotype for each trait and using the results to create an IBL.
The first thing the breeder must do is to understand the genotype of each trait that will be featured in ideal "Silver Kush" strain. In order to do this the genotype of each parent strain for that same trait must be understood. Since there are four traits that the breeder is trying to isolate, and 4x2 = 8, eight alleles make up the genotypes for these phenotype expressions and must be made known to the breeder.
Let's take the pale green leaf of the Silver Haze for starters. The breeder will grow out as many Silver Haze plants as possible, noting if any plants in the population display other leaf colors. If they do not, the breeder can assume that the trait is either homozygous dominant (SS) or recessive (ss). If other leaf colors appear within the population, the breeder must assume that the trait is heterozygous (Ss) and must be locked down through selective breeding. Let's look closely at the parents for a moment.
If both parents were SS there wouldn't be any variation in the population for this trait. It would already be locked-down and would always breed true without any variations.
With one SS parent and one Ss parent, the breeder would produce a 50:50 population — one group being homozygous (SS) and the other heterozygous (Ss).
If both parents were Ss, the breeder would have 25 percent SS, 50 percent Ss and 25 percent ss. Even though gene frequencies can be predicted, the breeder will not know with certainty whether the pale green leaf trait is dominant or recessive until they perform a test cross. By running several test crosses the breeder can isolate the plant that is either SS or ss and eliminate any Ss from the group. Once the genotype has been isolated and the population reduced to contain only plants with the same genotype, the breeding program can begin in earnest. Remember that the success of any cannabis growing and breeding program hinges on the breeder maintaining accurate records about parent plants and their descendants so that they can control gene frequencies.
Let's say that you run a seed bank company called PALE GREEN LEAF ONLY BUT EVERYTHING ELSE IS NOT UNIFORM LTD. The seeds that you create will all breed pale green leaves and the customer will be happy. In reality, customers want the exact same plant that won the cannabis cup last year or at least something very close. So in reality, you will have to isolate all the ^winning' traits before customers will be satisfied with what they're buying.
The number of tests it takes to know any given genotype isn't certain. You may have to use a wide selection of plants to achieve the goal, but nevertheless it is still achievable. The next step in a breeding program is to lock down other traits in that same population. Here is the hard part.
When you are working on locking down a trait you must not eliminate other desirable traits from the population. It is also possible to accidentally lock down an unwanted trait or eliminate desired traits if you are not careful. If this happens then you'll have to work harder to explore genotypes through multiple cross tests and lock down the desired traits. Eventually, through careful selection and record keeping you'll end up with a plant that breeds true for all of the features that you want. In essence, you will have your own genetic map of your cannabis plants.
Successful breeders don't try to map everything at once. Instead, they concentrate on the main phenotypes that will make their plant unique and of a high quality. Once they have locked down four or five traits they can move on. True breeding strains are created slowly, in stages. Well known true breeding strains like Skunk#l and Afghani#l took as long as 20 years to develop. If anyone states that they developed a true breeding strain in one or two years you can be sure that the genetics they started with were true breeding, homozygous, in the first place.
Eventually you will have your Silver Kush strain but only with the four genotypes that you wanted to keep. You may still have a variety of non-uniform plants in the group. Some may have purple stems, while others may have green stems. Some may be very potent and others not so potent. By constantly selecting for desired traits you could theoretically manipulate the strain into a true breeding strain for every phenotype. However, it is extremely unlikely that anyone will ever create a 100 percent true breeding strain for every single phenotype. Such a strain would be called a perfect IBL. If you're able to lock down 90 percent of the plant's phenotypes in a population then you can claim that your plant is an IBL.
The core idea behind the true breeding technique is to find what is known as a donor plant. A donor plant is one that contains a true breeding trait (homozygous, preferably dominant for that trait). The more locked down traits are homozygous dominant the better your chances of developing an IBL, which does not mean that the line of genetics will be true breeding for every trait, but rather that the strain is very uniform in growth for a high percentage of phenotypes.
Hell yeah man, some amazing info as always
I'm really starting to notice the small differences with the plants now, picking up on their traits pretty early I cant wait to get into doing some of my planned crosses, or more importantly looking into those seeds created, will be doing bigger plants and making a shitload of seed so will get a chance to do some decent hunting, find something truly amazing and lock it down or make it even better 
Its actually really simple.
You make the best plants you have ever seen fuck each other ,then you do it again and again and again and again just keep going and you will produce a better strain than you have ever seen .
Best plant fucks best plant repeat repeat repeat repeat repeat repeat you will get to the point where the plants just can't be shit .
You make the best plants you have ever seen fuck each other ,then you do it again and again and again and again just keep going and you will produce a better strain than you have ever seen .
Best plant fucks best plant repeat repeat repeat repeat repeat repeat you will get to the point where the plants just can't be shit .
- Thread starter
- #4,950
Yeah that's the way I have been doing it, picking the best 2 and letting them go at it, but traits are good for selecting males when looking for a male version of the awesome female you found its probably focussed on a bit more in cubing when trying to lock down phenotypes and get back to the original mother but generally in any breeding you are doing it without even thinking about it, when you say "pick the best 2 plants" you are selecting them because of their traits that appeal to you
its probably focussed on a bit more in cubing when trying to lock down phenotypes and get back to the original mother but generally in any breeding you are doing it without even thinking about it, when you say "pick the best 2 plants" you are selecting them because of their traits that appeal to you
But then your trying to control 12'monsters that go for 18 weeks, in a tent.. don't get me wrong, I agree, that's how it was always done.. good to breed traits though of rather just good fun, good info to know..
Yeah that's the way I have been doing it, picking the best 2 and letting them go at it, but traits are good for selecting males when looking for a male version of the awesome female you found
Yeah spot on ,I guess after a while it just becomes second nature but your right .
For example a beginner would first need to know what traits it takes to make up those "best plants" where as we just go yep its that c@nt there and the bitch over there badabing badaboom LOL.
Pick all my women the same way ,haven't had a Hermie yet ,the Thai pheno hahahahahahaaha
- Thread starter
- #4,954
That's it, I know myself I can look at a bunch of plants and pick one just going off looks alone, its something that becomes second nature to you after growing so many of them
gotta watch that thai pheno, looks so real till you get up close
That's it, I know myself I can look at a bunch of plants and pick one just going off looks alone, its something that becomes second nature to you after growing so many of them
Yeah some of the phillo phenos too ,can't be too carefull ,bloody knock offs ,always check for nanners hahahahaha
I've gone through and done some defol. After finding that leaf I decided to thin the canopy a bit more. Found some WPM while I was in amongst the branches. I decided to add another fan, move the other two smaller ones and got some stuff called Seranade. A buddy of mine who grows swears by it. Anyways, I've got a much slimmer looking Jane who's shaking like an earthquake. OH yeah, and I ditched my original idea of keeping clones and seedlings under 300 watts of LED and put it back into my flower tent. I feel like a big boy now, 1500 Watts of Flower Power Y'all. YEEEEEHAWWWWW!!!!!
Here's the whole plant, after looking at those ones ^ up there ^ I'm feeling like a real rookie (which I am). Today is day 42 of flower, 3 weeks to go!
And I gotta show off the flower power.
Here's the whole plant, after looking at those ones ^ up there ^ I'm feeling like a real rookie (which I am). Today is day 42 of flower, 3 weeks to go!
And I gotta show off the flower power.
Phenoman
Well-Known Member
This is great information.Just found a great post..
FaderVader
Guest
#7 May 13, 2009 Last edited by a moderator: May 13, 2009
Breeding and growing cannabis strains is all about manipulating gene frequencies. Most strains sold by reputable breeders through seed banks are very uniform in growth. This means that the breeder has attempted to lock certain genes down so that the genotypes of those traits are homozygous.
Imagine that a breeder has two strains: Master Kush and Silver Haze. The breeder lists a few traits that they particularly like (denoted by *).
This means they want to create a plant that is homozygous for the following traits and call it something like Silver Kush.
Silver Kush
Pale green leaf Hashy smell Silver flowers Short plants
All the genetics needed are contained in the gene pools for Master Kush and Silver Haze.The breeder could simply mix both populations and hope for the best or try to save time, space and money by calculating the genotype for each trait and using the results to create an IBL.
The first thing the breeder must do is to understand the genotype of each trait that will be featured in ideal "Silver Kush" strain. In order to do this the genotype of each parent strain for that same trait must be understood. Since there are four traits that the breeder is trying to isolate, and 4x2 = 8, eight alleles make up the genotypes for these phenotype expressions and must be made known to the breeder.
Let's take the pale green leaf of the Silver Haze for starters. The breeder will grow out as many Silver Haze plants as possible, noting if any plants in the population display other leaf colors. If they do not, the breeder can assume that the trait is either homozygous dominant (SS) or recessive (ss). If other leaf colors appear within the population, the breeder must assume that the trait is heterozygous (Ss) and must be locked down through selective breeding. Let's look closely at the parents for a moment.
If both parents were SS there wouldn't be any variation in the population for this trait. It would already be locked-down and would always breed true without any variations.
With one SS parent and one Ss parent, the breeder would produce a 50:50 population – one group being homozygous (SS) and the other heterozygous (Ss).
If both parents were Ss, the breeder would have 25 percent SS, 50 percent Ss and 25 percent ss. Even though gene frequencies can be predicted, the breeder will not know with certainty whether the pale green leaf trait is dominant or recessive until they perform a test cross. By running several test crosses the breeder can isolate the plant that is either SS or ss and eliminate any Ss from the group. Once the genotype has been isolated and the population reduced to contain only plants with the same genotype, the breeding program can begin in earnest. Remember that the success of any cannabis growing and breeding program hinges on the breeder maintaining accurate records about parent plants and their descendants so that they can control gene frequencies.
Let's say that you run a seed bank company called PALE GREEN LEAF ONLY BUT EVERYTHING ELSE IS NOT UNIFORM LTD. The seeds that you create will all breed pale green leaves and the customer will be happy. In reality, customers want the exact same plant that won the cannabis cup last year or at least something very close. So in reality, you will have to isolate all the ^winning' traits before customers will be satisfied with what they're buying.
The number of tests it takes to know any given genotype isn't certain. You may have to use a wide selection of plants to achieve the goal, but nevertheless it is still achievable. The next step in a breeding program is to lock down other traits in that same population. Here is the hard part.
When you are working on locking down a trait you must not eliminate other desirable traits from the population. It is also possible to accidentally lock down an unwanted trait or eliminate desired traits if you are not careful. If this happens then you'll have to work harder to explore genotypes through multiple cross tests and lock down the desired traits. Eventually, through careful selection and record keeping you'll end up with a plant that breeds true for all of the features that you want. In essence, you will have your own genetic map of your cannabis plants.
Successful breeders don't try to map everything at once. Instead, they concentrate on the main phenotypes that will make their plant unique and of a high quality. Once they have locked down four or five traits they can move on. True breeding strains are created slowly, in stages. Well known true breeding strains like Skunk#l and Afghani#l took as long as 20 years to develop. If anyone states that they developed a true breeding strain in one or two years you can be sure that the genetics they started with were true breeding, homozygous, in the first place.
Eventually you will have your Silver Kush strain but only with the four genotypes that you wanted to keep. You may still have a variety of non-uniform plants in the group. Some may have purple stems, while others may have green stems. Some may be very potent and others not so potent. By constantly selecting for desired traits you could theoretically manipulate the strain into a true breeding strain for every phenotype. However, it is extremely unlikely that anyone will ever create a 100 percent true breeding strain for every single phenotype. Such a strain would be called a perfect IBL. If you're able to lock down 90 percent of the plant's phenotypes in a population then you can claim that your plant is an IBL.
The core idea behind the true breeding technique is to find what is known as a donor plant. A donor plant is one that contains a true breeding trait (homozygous, preferably dominant for that trait). The more locked down traits are homozygous dominant the better your chances of developing an IBL, which does not mean that the line of genetics will be true breeding for every trait, but rather that the strain is very uniform in growth for a high percentage of phenotypes.
*If this is from Vader from Ocean Grown. He is the breeder of my (hopefully) prize mom's coming next journal.
Saved this post.
AussieBlueTHC
Well-Known Member
Just found a great post..
FaderVader
Guest
#7 May 13, 2009 Last edited by a moderator: May 13, 2009
Breeding and growing cannabis strains is all about manipulating gene frequencies. Most strains sold by reputable breeders through seed banks are very uniform in growth. This means that the breeder has attempted to lock certain genes down so that the genotypes of those traits are homozygous.
Imagine that a breeder has two strains: Master Kush and Silver Haze. The breeder lists a few traits that they particularly like (denoted by *).
This means they want to create a plant that is homozygous for the following traits and call it something like Silver Kush.
Silver Kush
Pale green leaf Hashy smell Silver flowers Short plants
All the genetics needed are contained in the gene pools for Master Kush and Silver Haze.The breeder could simply mix both populations and hope for the best or try to save time, space and money by calculating the genotype for each trait and using the results to create an IBL.
The first thing the breeder must do is to understand the genotype of each trait that will be featured in ideal "Silver Kush" strain. In order to do this the genotype of each parent strain for that same trait must be understood. Since there are four traits that the breeder is trying to isolate, and 4x2 = 8, eight alleles make up the genotypes for these phenotype expressions and must be made known to the breeder.
Let's take the pale green leaf of the Silver Haze for starters. The breeder will grow out as many Silver Haze plants as possible, noting if any plants in the population display other leaf colors. If they do not, the breeder can assume that the trait is either homozygous dominant (SS) or recessive (ss). If other leaf colors appear within the population, the breeder must assume that the trait is heterozygous (Ss) and must be locked down through selective breeding. Let's look closely at the parents for a moment.
If both parents were SS there wouldn't be any variation in the population for this trait. It would already be locked-down and would always breed true without any variations.
With one SS parent and one Ss parent, the breeder would produce a 50:50 population – one group being homozygous (SS) and the other heterozygous (Ss).
If both parents were Ss, the breeder would have 25 percent SS, 50 percent Ss and 25 percent ss. Even though gene frequencies can be predicted, the breeder will not know with certainty whether the pale green leaf trait is dominant or recessive until they perform a test cross. By running several test crosses the breeder can isolate the plant that is either SS or ss and eliminate any Ss from the group. Once the genotype has been isolated and the population reduced to contain only plants with the same genotype, the breeding program can begin in earnest. Remember that the success of any cannabis growing and breeding program hinges on the breeder maintaining accurate records about parent plants and their descendants so that they can control gene frequencies.
Let's say that you run a seed bank company called PALE GREEN LEAF ONLY BUT EVERYTHING ELSE IS NOT UNIFORM LTD. The seeds that you create will all breed pale green leaves and the customer will be happy. In reality, customers want the exact same plant that won the cannabis cup last year or at least something very close. So in reality, you will have to isolate all the ^winning' traits before customers will be satisfied with what they're buying.
The number of tests it takes to know any given genotype isn't certain. You may have to use a wide selection of plants to achieve the goal, but nevertheless it is still achievable. The next step in a breeding program is to lock down other traits in that same population. Here is the hard part.
When you are working on locking down a trait you must not eliminate other desirable traits from the population. It is also possible to accidentally lock down an unwanted trait or eliminate desired traits if you are not careful. If this happens then you'll have to work harder to explore genotypes through multiple cross tests and lock down the desired traits. Eventually, through careful selection and record keeping you'll end up with a plant that breeds true for all of the features that you want. In essence, you will have your own genetic map of your cannabis plants.
Successful breeders don't try to map everything at once. Instead, they concentrate on the main phenotypes that will make their plant unique and of a high quality. Once they have locked down four or five traits they can move on. True breeding strains are created slowly, in stages. Well known true breeding strains like Skunk#l and Afghani#l took as long as 20 years to develop. If anyone states that they developed a true breeding strain in one or two years you can be sure that the genetics they started with were true breeding, homozygous, in the first place.
Eventually you will have your Silver Kush strain but only with the four genotypes that you wanted to keep. You may still have a variety of non-uniform plants in the group. Some may have purple stems, while others may have green stems. Some may be very potent and others not so potent. By constantly selecting for desired traits you could theoretically manipulate the strain into a true breeding strain for every phenotype. However, it is extremely unlikely that anyone will ever create a 100 percent true breeding strain for every single phenotype. Such a strain would be called a perfect IBL. If you're able to lock down 90 percent of the plant's phenotypes in a population then you can claim that your plant is an IBL.
The core idea behind the true breeding technique is to find what is known as a donor plant. A donor plant is one that contains a true breeding trait (homozygous, preferably dominant for that trait). The more locked down traits are homozygous dominant the better your chances of developing an IBL, which does not mean that the line of genetics will be true breeding for every trait, but rather that the strain is very uniform in growth for a high percentage of phenotypes.
Great read Grizz, personally im giving up on the whole indoor breeding thing for a little bit till i get my systems sorted out but some excellent info for when i continue it outdoors.
I have a question maybe you can answer. I know if you cross an f1xf1 you get an f2. But what happens if you cross an f1xf1 of two completly differnet parent sets. For example, (ww x bb) x (haze x nl). Is that an f2 or an f1.5? Just wondering cause most strains on the marlet are eseentially that. I cant really find a definative answer on it. Your pretty up with it all, or if not maybe someone else has some ideas.
It's a cross.. f1 if you like.. you can cross the same strain to F6 cross that back to an f3 and you get f1... any new x is f1, first..
but it's also not, it's just an unworked cross. Not where you start for a strain..
but it's also not, it's just an unworked cross. Not where you start for a strain..
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Whole heap of stuff to get through from the last few days
In the Greenhouse, a lot of new sprouts, first up 10/10 Sour Diesel x Cindy Haze
5/5 White Jack x Cindy Haze
2/5 so far of the Mango Sativa x Sour Diesel, will grab pics when they are fully up
The plant my dad is growing this year, a Skywalker Kush
Night Terror OG
Gorilla Bomb
Lost Coast Sour Diesel female
Lost Coast Sour Diesel male
nice little bud of Rollex OG for lunch today, topped off with some Rollex OG dry sift
In the Pollen tent, the Jilly beans, few starting to show some seeds, not sure if its from the cindy haze male or the current little male I have in there, probably the latter, a Lost Coast Sour D making some f2's on a little LCSD fem and a Sour Psycho fem
#1
#2
#3
#4
#5
Face Melt OG
91'Krypt
Check out this little Sour Psycho, absolutely covered in resin
In the Veg tent, 2x nice looking Mango Sativas
a nice looking SSH seedling
the Killer Queen x Cindy Haze's and La Nina's
THC Bomb
Jabbas Stash
Purple Urkle Male
Jandre Kush #2
Strawberry Cough male reveg
Face Off OG BX2
White Jack reveg
In the flower tent, Gorilla bomb is starting to stack up nicely on one branch, the rest are foxtailed to hell had a slight hiccup last week and most of the plant flopped so had to string her up
Smaller plants
The 3x Sour White Jacks
#1
#2
#3
Bruce Banner
Jandre Kush #1
Elephant Stomper
In the Greenhouse, a lot of new sprouts, first up 10/10 Sour Diesel x Cindy Haze
5/5 White Jack x Cindy Haze
2/5 so far of the Mango Sativa x Sour Diesel, will grab pics when they are fully up
The plant my dad is growing this year, a Skywalker Kush
Night Terror OG
Gorilla Bomb
Lost Coast Sour Diesel female
Lost Coast Sour Diesel male
nice little bud of Rollex OG for lunch today, topped off with some Rollex OG dry sift
In the Pollen tent, the Jilly beans, few starting to show some seeds, not sure if its from the cindy haze male or the current little male I have in there, probably the latter, a Lost Coast Sour D making some f2's on a little LCSD fem and a Sour Psycho fem
#1
#2
#3
#4
#5
Face Melt OG
91'Krypt
Check out this little Sour Psycho, absolutely covered in resin
In the Veg tent, 2x nice looking Mango Sativas
a nice looking SSH seedling
the Killer Queen x Cindy Haze's and La Nina's
THC Bomb
Jabbas Stash
Purple Urkle Male
Jandre Kush #2
Strawberry Cough male reveg
Face Off OG BX2
White Jack reveg
In the flower tent, Gorilla bomb is starting to stack up nicely on one branch, the rest are foxtailed to hell
had a slight hiccup last week and most of the plant flopped so had to string her up
Smaller plants
The 3x Sour White Jacks
#1
#2
#3
Bruce Banner
Jandre Kush #1
Elephant Stomper