It was cubed to begin with, so it's technically an IBL already. Most people refer to them as F2's simply because they made seeds from their pack(s) of beans (think Joey Weed and Spice Brothers).
It went the way of the Dodo when Bros. Grimm went out of business. Any beans going around at this point are either old stock (good luck finding those!) or beans people have made to keep the line going. Like I said, technically it is an IBL already.
Where'd you get this info?
Where'd you get this info?
Cubing works on the basis of mathamatical probabilities with respect to gene frequencies. The more males you use with each cross, the better the chance that your reality matches the theory. In theory, with the first backcross, 75% of your genepool will match the genepool of the P1 parent being cubed. Squaring increases this to 87.5% and cubing increases it to 93.75%. You can arrive at these numbers by taking the average between the two parents making up the cross. For instance, you start by crossing the P1 mom (100%) with and unrelated male (0%) getting 100% + 0% divided by 2 = 50%. Therefore, the offspring of this first cross are loosly thought of as being 50% like the mom. Take these and do your first backcross and you get 100% (mom) + 50% divided by 2 = 75%. And this is where we get the 75% for the first backcross. Same thing applies as you do more backcrosses. As you will see later, you can apply this same probability math to specific genes or traits, and this can have a dramatic effect on your methodologyology and selection ways.
Where'd you get this info?
Cool.
Subrob...when are those beans going up?