bombbudpuffa my honest apology. Im glad you spoke up really, I broke out my old growers book and when I read the chapter I realized I was mistaken qiute badly on this I assumed polyploid was refering to the sex chromosomes but I see not that it was not refering to changing the sex of the plant, though it is located next to the chapter on Breeding MJ. Sorry to TheStickyIcky also for kidnapping your post with :**:.
I do have the book open and since I do I will tell you what it says about producing female seeds:
" To produce female seeds, the plants are fertilized with pollen from male flowers that appers on a basically female plant. Such flowers appear on intersexes, reversed females, and hermaphrodites. Female plants have an XX complement of sex chromosomes; therefore, the pollen from male flowers that form on female plants can only carry an X chromosome. All seeds produced from flowers fertilized with this "female" pollen will thus have an XX pair of chromosomes, which is the female genotype".............
It also sites severe pruning such as a harvest but leaving as many leaves as possible then cutting light cycle back to 8 hours of light forcing the plant to create male flowers in an effort to procreate in what it sees as the end of the season with such little light. It also goes on to say feminized seeds can be made from a natural hermie but it will likley inherit the gene of hermie.
Hope this helps more than my first post.