Seasonal changes in abscisic acid content and its role in flowering of mango (Mangifera indica L.).
Jogdande N. D., Choudhari K. G.
Author Affiliation: Mahatma Phule Krishi Vidyapeeth, Rahuri - 413 722, India.
Orissa Journal of Horticulture 29 : 46-49
Abstract : An experiment was conducted in Rahuri, Maharashtra, India during 1985-87 to study the naturally occurring growth promoters in the shoots of mango cultivars Alphonso (off- and on-year), Neelum (off-year) and Pairy (off-year). In all the stages of shoot development, the highest activity of abscisic acid in all the cultivars ranged from Rf 0.9 to 1.0. Neelum showed the highest activity in all the stages of shoot development. Alphonso (on-year) which did not flower in the following season showed the lowest total abscisic acid like substance content in all the samplings. The content of abscisic acid in all the cultivars increased as the time progressed. On the other hand, the increase was marginal in Alphonso (on-year) and highest in Neelum followed by Pairy and Alphonso (off-year). The results revealed that certain inhibitors similar to abscisic acid were relatively higher in the shoots of mango trees during flower bud initiation.