nope just have a problem with the bullsh#t....
For the human race to develop above the rock throwing, name calling monkeys we are today we need to learn how to learn. You should be a skeptic but you should also have an open mind, require proof of course, but keep an open mind...
Sex Expression in Cucumber Plants as Affected by2-Chloroethylphosphonic Acid, Ethylene, and Growth Regulators
"It is apparent from these data that
ethylene causes
a tendency toward femaleness when applied at the first leaf stage.
The ethylene-treated plants, however, showed a general yellowing
and epinasty of the cotyledons. This effect was not observed in
plants treated with Ethrel unless the plants were enclosed in
plastic bags from which the excess ethylene could not escape.
Thus, the general effect of ethylene on plant growth probably
masked the more subtle effects on sex expression. For example,
at the lowest concentration used (100 ,A/liter) the influence of
ethylene on femaleness, as evidenced by the node of the first
flower, approached that obtained with Ethrel (Table II). However,
as the concentration of ethylene was increased, the effect on
femaleness was reduced."
Increase in femaleness of three cucurbits by treatment with Ethrel, an ethylene releasing compound
"The application of Ethrel (2-chloroethane phosphonic acid), an ethylene-releasing compound, to monoecious cultivars of cucumber and squash and an andromonoecious cultivar of muskmelon, caused a shift towards femaleness in all three species."
REGULATION OF ETHYLENE AS AN AGRICULTURAL PRACTICE
"The varied effects of ethylene include: growth inhibition; growth promotion; root initiation; fruit degreening; flower initiation and prevention; modification of flower sex; fruit growth stimulation; fruit ripening; storage product hydrolysis; pigment synthesis promotion and inhibition; latex secretion promotion; modification of flavor; participation in expression of plant disease symptoms; promotion of leaf, flower, and fruit abscission and dehiscence; release of seed and bud dormancy; release of apical dominance. Additional effects of less apparent agricultural value include: modification of geotropic behavior; tissue proliferation and formative growth; leaf epinasty; leaf movement inhibition; respiratory changes. In addition, CEPA, an ethylene substrate, has been shown to promote tillering and stem stiffness of small grains and modest yield increases of some crops. Ethylene is a natural regulator of some of these processes in addition to producing them when applied to the plant."
So, it is clear that ethylene CAN affect the sexual expression of some plants so while these studies do not specifically mention
Cannabis it is at least plausible and most likely probable. The trick is in getting the amount and times right because using too much can actually damage the plants.