Well cannabis is determined by an XX/XY system, it's been tested check for some abstracts
The odds of getting 6/20 instead of 10/20 is not significant. Trust me, plenty of people have bought 2 packs of seeds and only gotten 6 females. I say luck of the draw, you want to redefine your conception of cannabis sex from this?
The environment has a significant effect on sex ratios in Cannabis spp. This is not luck of the draw as much as one might think.
I don't see it. I don't understand it in Sam's OH but he was running big numbers not making his judgments off a sample of 20.
The 6/20 number is a reference to the sex ratio that I observed after several applications of BAP. This ratio contradicts the understanding that BAP induces higher then normal female/male ratios.
My observation for an all male population was 6/6 plants being male. The odds of observing this in a pure XY inheritance pattern is ~.5^6 or ~1.6%. I figure I had odds of .5-3% of finding 6 males of 6 plants from "random" bag seed of a single cross. My real odds were probably closer to .5% because, if I recall correctly, I grew another unrelated cross along with the all male population and got over 50% female. The environment was an unlikely factor in the development of 6/6 males.
I think that Cannabis spp. is better represented by an x1x1,x2x2 xx/xX denotation or something like that. I am not disputing a sex chrosome that caries a male gene that is not subject to recombination exists. I am disputing how we reference it. The Cannabis sex chromosome is actually bigger then the rest of the 19, not smaller. Hence, it cannot be considered a Y unless Y means male chromosome that can be influenced by recombinant genes. I think xx/xX is more befitting because the male chromosome in Cannabis spp. is larger then the rest, not smaller. Also the x1,x2, etc... would reference modifier genes in the autosomes that do exist in the world wide gene pool.
Anyways, I still think that it would be adventageous if one were to apply some BAP and Auxins in combination with the Ethephon.
Also, one might just get some fertile seed off of their male and grow those out. The resulting selfed seed should give a fair sample of the likely recombinants and the reletive homogenosity of its genome.
I think you should try the tests with Ethephon + BAP/Auxins if you think they will be interesting. Will they be safe to consume? Ethephon is.
FYI, I have gotten all female or all male many times if I grow 10 seeds or less, if I grow lots more of the same batch of seeds the sex ration is 50/50. Its like flipping a coin, do it enough and you will get 6 heads or tales in a row.
I have selfed females many times and can say there are zero homogeneous Cannabis varieties, all are heterogeneous, regardless if wild or cultivated, hemp or drug. A homogeneous variety can be man made by selfing to S5 or S6 generation, but the plants will have zero vigor. I would suggest selfing a female not a male as males are harder to self and work with as well as 25% of the seed will be YY which may or may-not grow. I confirmed my experimental selfed S5's were homogeneous by sending the materials to a lab for testing.
I did just self my male turned female and the seeds are setting.
Can you list or give examples of any "modifier genes in the autosomes that do exist in the world wide Cannabis gene pool"?
Oh, and BTW, the male transformed to female does have typical Skunk #1 terpene smells, but like I said the bracts are much smaller, maybe because of the transitory effects of Ethephon, next time I will spray 4 times 1 week apart, not three, maybe it will help with the female bract size. Also I will not spray the leaves as it killed them, that did not help.
-SamS
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