Cheers Waira!
Manolo says each time we cross an auto with a photoperiod-dependent plant the % of ruderalis is reduced by half. Hence, a new generation. Now we go with the 5th Generation.
When we first started (1st generation) we started with a genetic that was already a 2nd cross, so it had 25% of ruderalis. Starting from this:
1G = 25%
2G = 12,5%
3G = 6,25%
4G = 3,125%
5G = 1,56125%
So, we could say that our 5th generation autoflowering strains feature about 1,5% of ruderalis.
Sweet smokes!
tommy