My Boy hooked me up with a bunch of old DJ Short Blueberry Indica (F2) genetics.... I went through about 60 plants and picked my Favorite Mother, then started working with her... It was kind of hard and took some work, because the male plants do not take on alot of the purple characteristics, They will have purple veins on the stems and a few of the pollen pods will have a little purple on them, but thats about it... Had to try and match up characteristics from my Mom plant, like the leaves, structure, etc...
But I finally got the Purple Mom pheno to be the dominate phenotype in this line...And now, The Purple Berry males (Mom pheno) is alot easier to spot.... They are now showing alot more purple expressions, So it was easier to do this current BX.
The Purple Berry line, now that I have put a ton of time and generational selections into it, is getting close to becoming an IBL for the Mom pheno... Within another year, I will have it completed. But for right now, It's no porblem at all to get mostly Mom phenos.