Relative 14CO2 fixation by leaves and fruits, and translocation of 14C-sucrose in mango.
Chauhan P. S., Pandey R. M.
Author Affiliation: Indian Agricultural Research Institute, New Delhi-110 012, India.
Scientia Horticulturae 22 : 121-128
Abstract : The studies were carried out on the reproductive shoots of the cv. Dashehari at various stages of development. Fruits made hardly any contribution to their own growth, the rate of photosynthesis in fruit peel being negligible compared with leaves. Both acropetal and basipetal transport of 14C-sucrose occurred in the reproductive shoots. The former was predominant during flowering and fruit development, whereas the latter was predominant during flower bud differentiation. During the course of reproductive development, half-grown and fully-grown fruits were the strongest sink, whereas flower buds and fruits at the marble stage acted as the weakest sink. Flowers and fruits at the pea stage occupied an intermediate position. The major proportion of the translocated 14C-activity occurred in the fruit pulp.