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Originally Posted by penguin Keep in mind that ethylene promotes senescence, so you wouldn't want to use it throughout the entire grow.
The other thing that concerns me with ethylene-treated plants is the possible tendency for apparent females to start producing male flowers when you stop providing ethylene. Personally, I have always selected for strongly dioecious plants and my screening process is designed to identify and cull any plants that show any tendency to monoecy at all. IMO, it would be really good for the gene pool if all breeders did that. The recent trend to "feminized" seed and the growing prevalence of random breeding with "hermaphrodites" is a serious threat to dioecy in drug varieties of  . 
penguin |
Penguin, that's intriguing. Do you know if/where further reading on this is located? I'm interested in finding out more...