Diurnal variation in the starch content in Alphonso mango shoots at different stages of fruit bud differentiation.
Patil P. B., Rao M. M., Srinivasan C. N., Nalawadi U. G.
Author Affiliation: Department of Horticulture, Agriculture College, Dharwad 580?005, India.
: 491-494
Abstract : Flower buds from 'on'-year trees, and vegetative terminal ('scar') buds from shoots, which had previously fruited, from 'off'-year trees, were sampled in duplicate every 4 hours from 04.00 h to midnight, at fortnightly intervals from 16 Oct. 1982 to 1 Jan. 1983. Scar buds had a higher mean starch content (17.1 mg/g) than flower buds (11.3 mg/g). There was considerable variability in starch content at different times of day, but levels tended to be lowest at 08.00 h and 20.00 h. The mean starch level in flower buds varied little throughout the sampling period, but in scar buds it was higher on 15 Dec. (20.7 mg/g) after fruit bud differentiation (FBD) than at the pre-FBD and FBD stages (16.5 mg/g) and post-FBD (14.0 mg/g) on 1 Jan.