Hey Amy! Loved your write up on the digging you did into selfing and out-crossing. Pretty funny they were using Candida CD-1. I had one concern though;
“If crossing within a [variety] is necessary … then growers should consider using two different genotypes of the [variety] to produce feminised seed and keep the [variety] name”.
This was quite confusing for me. If I’m understanding genotype correctly, two Candida CD-1 seeds are of the same genotype. That is, variety and genotype are synonyms.. because what’s above variety? Species. Well okay, we’re not growing a different species. What’s
below variety? Phenotype. If you grow two OG Kush plants, they’re the same varietal and thus the same genotype. The same set of potential variables though their phenotypes may differ. Where you’re going with this does make sense though, because what you’re talking about is making F2-Fn’s. But that brings up another concern, particularly with the variety in question, Candida CD-1.
The issue with CBD heavy strains is, the passing of genetics related to CBD:THC ratio is not very well understood. That’s why you have farms doing 10,000 plant sifts. They can send in tissue samples and receive the cannabinoid ratios of each cultivar at 3 weeks into veg. The reason I bring this up; even if someone successfully reversed the Candida,
there’s no guarantee the resulting seed will offer the same CBD:THC ratio. I believe that’s the biggest obstacle to increasing your seed stock of Candida. I know this is true because of the issue of “hot crops” in the US. Hemp farmers getting in big trouble because their crops have crept up over that .3% thc threshold for hemp.
One of my favourites, Bubba Hash, gets described as “F1 Hybrid Feminized” by the breeder. (They also list an “S1 Feminized Hashplant”.) So it doesn’t seem to be a problem in all places.
This is a very important marker to notice. Good breeders will mostly always indicate filial generation unless it’s something they’ve worked down to a new genotype. Something to always watch for when buying seeds.