What are the traits of an F2 of a Backcross?

tardis

Well-Known Member
So more a cubed cross, but for my question if you take a Backcross its 75% the original right? Backcross it again and its 83.333% (or something along those lines). Say you take those BX3's and find a male and female and breed them together making an F2. Will this behave as a regular F2 where the dominate and recessive genes all mix up so you have just as much chance of getting recessive genes as dominant or will it being a backcross somehow change this rule and its no longer an F2 but something else entirely? Basically what can I expect from the offspring of a BX3 parental line?
 

tardis

Well-Known Member
To Clarify I got some beans coming of some Purple Urkle Cubed which are now sold out at geneticsupply. I only have 5 but think the odds are good because it is a BX3 I want to find a male for pollen for crosses (like with 3rd Dimension, Lemon Tree, Moonshadow, etc), but also in the hunt for that male to make more Purple Urkle Seeds for myself and friends. Will these Purple Urkle seeds be pretty uniform because of the stabliity of the parents OR will it go as far as 50% chance to show the traits of what was used in the backcross? How stable will the offspring of brother and sister of a Cubed Purple Urkle (or any strain) be?
 

maranibbana

Well-Known Member
To Clarify I got some beans coming of some Purple Urkle Cubed which are now sold out at geneticsupply. I only have 5 but think the odds are good because it is a BX3 I want to find a male for pollen for crosses (like with 3rd Dimension, Lemon Tree, Moonshadow, etc), but also in the hunt for that male to make more Purple Urkle Seeds for myself and friends. Will these Purple Urkle seeds be pretty uniform because of the stabliity of the parents OR will it go as far as 50% chance to show the traits of what was used in the backcross? How stable will the offspring of brother and sister of a Cubed Purple Urkle (or any strain) be?
Bx3F1

and being a bx3 and assuming the breeder did the work in stabilizing, I’d say you’d find some morphology but not as wide as a plain F/R/S because it’s been worked a bit already.

you’d find that broader variation in the BX1 gen

so in short if stable bx3 you’d prob find two or three phenos with some slight variation in flower but prob all pretty the same, could hone in one the special one you like even more by doing the f1, go even farther and make an f2 and back cross back to the f1 you like to lock in. Idk ;)

or find what you like in the f1 and self it
 
Top