looking for a lil info.

maxamus1

Well-Known Member
Getting back into growing with the intent of breeding I have watched some YouTube videos I know I know not the greatest way but all I have for now besides what's on here. My question is is there any books or websites that could help me out? I have looked into Mendel on YouTube and starting to get the basics down or so I believe. Any help is much appreciated.
 

maxamus1

Well-Known Member
OK so I have some more questions. So after watching some more videos and talking with wife (nurse) I believeI have a good grasp on the basics of breeding. So here are my questions for better understanding of the topic,

1) if your f1 is go to be 75% of the dominant traits and f2 is when the gene pool opens up correct?

2) if that's true then you really don't start breeding until f2 when when everything opens up correct?

3) So now we are say f4 or f5 now we have just a couple of phenos correct? So when does the line become stable, at this point?

4) so when does a line become an IBL? Would it not be at the F2 when it becomes IBL or is it only when crossed back to parent? Also if memory serves correct IBL is the most stable correct?

I'm sure after reading my questions some of you are shaking your heads at me in shame thinking I'm a dumba$$ lol, but I would appreciate all helpful replies.
 

bf80255

Well-Known Member
OK so I have some more questions. So after watching some more videos and talking with wife (nurse) I believeI have a good grasp on the basics of breeding. So here are my questions for better understanding of the topic,

1) if your f1 is go to be 75% of the dominant traits and f2 is when the gene pool opens up correct?

2) if that's true then you really don't start breeding until f2 when when everything opens up correct?

3) So now we are say f4 or f5 now we have just a couple of phenos correct? So when does the line become stable, at this point?

4) so when does a line become an IBL? Would it not be at the F2 when it becomes IBL or is it only when crossed back to parent? Also if memory serves correct IBL is the most stable correct?

I'm sure after reading my questions some of you are shaking your heads at me in shame thinking I'm a dumba$$ lol, but I would appreciate all helpful replies.
this is inbreeding btw not just breeding. basically crossing any male and a female plant is a simple form of breeding but when inbreeding to fix traits you have to understand genetics a bit better and make proper selection to achieve the desired goal. Inbreeding is good at fixing beneficial traits but you have to keep in mind its also good at bringing out and fixing deletorious genes/traits and no one wants that.
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1) no, F1 of a cross between 2 unrelated lines should result in a homogenous blend of genes from both sides with the most dominant obviously taking precedence. theyll be like a mix of the 2 parents across the board but with some leaning to the moms side and some leaning to dads. Yes all the F1 plants will be heterozygous for most traits so not very useful for fixing traits.

2)by open up you mean the genes segregate. yes thats what happens, if you did your research on Gregor Mendel and Mendelian genetics you can see that the F2 will produce plants that "breed true" or carry homozygous genes for certain traits, which you can use to lock down desired qualities in a line. the trick is to figure out which homozygous genes they carry and to do that youve gotta TEST TEST TEST

3)No, by F4 and F5 you will theoretically have reduced the amount of variation but if you pop enough beans you will still see oddball phenos pop up that are just kind of hidden in the genes and only occasionally expressed like the "wild type" coloration in pigeons that will surface in pure white lines that have been pure for centuries but the genes are still there, just hidden.

This is also highly dependent upon initial P1 selection and the selections made during the critical F2 and F3 stages. The line becomes stable when the population has reached the point that it can maintain its genotype(s) over a number of generations. so like if you just grew 50 males and 50 females without selecting and the resulting progeny were similar and you did it again with them, with similar results, that would be considered "stable"

4)IBL means Inbred Line. technically speaking it becomes an IBL at F2 but practically its more like F4-F6 IMO. I have a strain at the F8 and I still see a pretty respectable degree of variation within my lines, ive tried my best to maintain genetic diversity while eliminating phenos that I dont like and only around the F6 did the variation start to slow down really, before that I would get all kinds of crazy stuff like really bushy green floppy phenos from 2 tall dark purple parents and just crazy random shit like that hahaa. cool thing about breeding is that reading and having theories is fine but until you put it into practice you have no clue how complicated it can be, so your always learning something new, thats a big reason why i love it!

IBL's are typically where youll have the highest chance to find individuals that are the most stable but honestly some plants are just really good at passing on there traits even if there polys like bodhis Sow Lotus male and Subcools Space Dude both those males are crosses but used for many other crosses and they always seem to pass on there traits very reliably.
 
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