Hola fellas, there are no males in S1 seed, what you have is a female showing strong male traits. its physically impossible to have a male in a selfed female population.
i always though that some how some way the femmed seedline produced males. havein a few conversations about the subject, come to the above conclusion.
ive had what i thought was a male in a few different femmed batches, ive used um and have had good success with um. seem to produce a normal 50/50 ratio in the next gen, maybe a bit female leanin.
i could see findin a male leanin female and havein a batch of seed be multisexed from that mating. testin your parent plants is whats gonna ensure that dont happen:D
and there is always the chance that stray pollens, from a single pollen sack hidden in a bud, could be the culprit
CBF