To Get Auto Seeds

do you need to breed two autos or does only one plant need to be an auto to produce auto seeds?

One plant. Realize though that it will take several generations to be stable.

auto + auto = auto
auto + 12/12 = no autos in 1st round of seeds, cross those seeds and you start getting some autos...several generations later you have a new stable autoflower...

I'm working on that as we speak, another 3 weeks or so and I should have my beans attained by crossing my ak-47x blueberry auto male pollen, with my ak-47 photoperiod plant.

From my research I should have some auto plants, as well as some photo and of course boys of each, then I will pollinate auto female with original male pollen and continue this out for 4 or better 5 times to stabilize the ruderalis/auto gene.

thanks for the info. yeah i remember that f1 f2 generation things with gene show from my biology this year. so if i do get some seeds with reg crossed with auto i will have all F1 reg seeds then if i cross thse reg seeds together i should end up with about 50/50 F2 seeds. it also has effect to which one is dominant. are auto seed homogygous ressecive to reg seeds? if so that would mean i will only have a 25% F2 autos

dank smoker420 said:

thanks for the info. yeah i remember that f1 f2 generation things with gene show from my biology this year. so if i do get some seeds with reg crossed with auto i will have all F1 reg seeds then if i cross thse reg seeds together i should end up with about 50/50 F2 seeds. it also has effect to which one is dominant. are auto seed homogygous ressecive to reg seeds? if so that would mean i will only have a 25% F2 autos

Click to expand...

Well, if none of the offspring of a photoperiod x autoflower cross are autoflowering then you have your answer.

Specifically, yes, if that were true then the autoflowering gene would be recessive to the photoperiod one, and you'd only expect to see 25% autoflowering phenotype in the F2 generation.

Now, in reality, I don't know if things are quite that straightforward.

Its certainly possible that the autoflowering trait is controlled by a single gene, in which case the above would apply.

For example, one way this could happen is if the autoflowering plants have a defect in the gene producing light-sensitive hormone that suppresses flowering. Without functional suppressive hormone, they'd go into flowering as soon as they became sexually mature. Another way is that they have a defect in the receptor to that hormone with the same result. There could be multiple different specific mutations in either of these genes that could cause the same phenotype of autoflowering. There are other possible genetic changes could also cause this, etc.

But its also possible that the autoflowering phenotype could be the result of multiple genes interacting, in which you might not see perfect 25-50-25% Mendelian offspring ratios in the F2. Its possible that autoflowering phenotype is affected by environmental influence, again potentially skewing the results.

As example, if there were multiple different genes potentially responsible for autoflowering, you could get a situation where you crossed two different lineage autoflowering plants, only to end up with ALL photoperiod F1 offspring.

it would be the perfect experiment if i had enough room haha its all very interesting genes and dna is insane