Expression of an endogenous flowering promoter in mango (Mangifera indica L.).
Núñez-Elisea R., Davenport T. L.
Author Affiliation: Tropical Research and Education Center, IFAS, University of Florida, Homestead, FL 33031, USA.
Proceedings of the Plant Growth Regulator Society of America. 16th Annual Meeting, Arlington, Virginia, USA, 6-10 August, 1989. : 245-247
Abstract : In cv. Keitt mango trees, the role of leaves and also the mobility of a flowering stimulus thought to be present were investigated. The effects of various combinations of defoliation, deblossoming and girdling were studied. Profuse stimulation of vegetative growth was achieved by deblossoming, and floral expression occurred only on those branches that were not defoliated or on which leaves remained attached for at least 5 days after deblossoming or girdling. It was suggested that this indicates a rapid loss of the induced floral stimulus, followed by a rapid resynthesis. Translocation of the floral stimulus from adjacent branches to non-girdled, deblossomed, defoliated branches required >15 days. An intermediate type, designated transition shoots, consisting of a floral apex, a vegetative base and an intermediate zone, were thought to have arisen from axillary buds that received optimal levels of flowering stimulus for only part of their development.