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Abstract
Preliminary experiments on the effects of chlorocholine chloride (CCC) and gibberellin A3 on vegetative and reproductive development of CANNABIS SATIVA L. — Applications as soil drench, of 10 -5 to 10 -2 M solutions of the growth-retarding chemical CCC (chlorocholine chloride) to plants of hemp « Carmagnola » (Cannabis sativa L.), experimentally cultivated in pots, reduced stem elongation proportionally to the doses employed. In comparison with the control, a marked dwarfing effect, leaves darker green, and a pronounced and early branching were particularly noticeable for plants treated with 10 -3 and 10 -2 M solutions of CCC. The effects of the chemical were completely nullified when a gibberellin spray of 100 p.p.m. was applied simultaneously or prior to CCC, but only partially when applied after 15 days.
No sex reversal of flowers was noted; flowering, anyway, was delayed in strongly dwarfed plants, maybe because of changes in correlation phenomena, induced by CCC, Gibberellin reversed this effect too.