Effects of Plant External Hormones on Flower Bud Differentiation of Vanilla
To investigate the regulation measures on vanilla flower bud formation and related mechanism, the plants were sprayed with water(CK), 6-Benzylaminopurine(6-BA), abscisic aci(ABA), auxin(IAA) and gibberellin (GA)individually before the onset of floral induction. The results showed that the treatment of 6-BA increased the contents of zeatin riboside(ZR), ABA , protein, soluble sugar and starch of functional leaves , and so did the treatment of ABA. The treatment of IAA increased the hormone contents of IAA, ABA, ZR and GA in the late stages of floral differentiation, but it reduced the contents of protein, soluble sugar and starch at full flowering stage. Spraying GA reduced the contents of ZR and GA. The treatments of 6-BA, ABA, IAA could enhance the ratio of flower bud formation, 6-BA treatment got the most significant effect, which could be applied in production.
V anilla planifolia AndrewsFlower bud differentiationPlant external hormonesEndogenous plant hormones