Thread: Backcrossing
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Old May 6, 2015   #18
Darren Abbey
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Join Date: Jun 2012
Location: Minnesota
Posts: 582

Originally Posted by bower View Post
Minn Mato, I have a really small space to work in, so it's hard to grow enough plants at once to find a stack of recessive genes in one plant - my plan is to look for one recessive at a time, and if I can find two of the desired traits in two F2 plants, I'll cross them... That may not work for a six gene trait like fruit size though, if you can't tell which traits are present.
The problem with this strategy is that when you cross the two F2s with different homozygous recessives... you end up with a new F1 that is heterozygous for those alleles and you have to then look for the multiple-homozygous progeny again.
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