Hi Dubi, put of curiosity, have you explored backcrossing several generations only s1s to start with? I'm just thinking with all the feminisation going on globally that we can definitely maintain certain strains that are only available as an S1 and produce seed stock to avoid losing the line. For example, an OG kush, grow 10 s1s, select a mother to keep, then use a sister to feminise, use the 2nd and 3rd generations to stabilise.Mother 6, S1
Mother 6, S1
I'm not a big fan of selfing a clone by itself unless there are no other plants to play with ... but in this case it worked quite well.
It's the selected mother 6 that i chose to reverse, pollinated by itself (S1). This one was tested in another room that had some heat problems at the end of flowering, chinese and its hybrids prefer slighty fresh temps (around 20ºC) in the last month of flowering to produce best quality and more resin production, and this kind of selfing breeding induces more inbreeding, but also found interesting this S1 generation, some S1 plants produced very nice yields despite the inbreeding and heat problems.
All the plants from the different lines matured in 8-9 weeks.