Annals of Botany 61: 269-281, 1988
© 1988 Annals of Botany Company
RESEARCH-ARTICLE |
Development and Histochemistry of Style and Stigma, and Pollen-Pistil Interaction in Madhuca indica (Sapotaceae)
Biotechnology Centre, Department of Microbiology, M.S. University of Baroda Vadodara-390 002, India
* Present address: Department of Botany, University of Kerala, Kariavattom, Kerala, India.
Accepted: 7 July 1987
The histological and histochemical changes during the development of the stigma and style of Madhuca indica of the family Sapotaceae have been investigated. The stigma is of the wet type and the style is open. The stigma secretion, present from stage I onwards is lipophilic. But the protein, polysaccharides and various enzymes are secreted only by the third, receptive stage. The stigma has a stellate cavity opening into the stylar canals. The exudate along with various constituents is present up to stage VI of flower maturity. The pollenpistil interaction studies show a strong self-incompatibility response. The pollen tubes show coiling and clubbing in the stigmatic cavity and stylar canals, even in the case of compatible cross pollination. Various methods are successfully employed to overcome self-incompatibility.
Madhuca indica, Mahuda, development, histochemistry, pollenpistil interaction, self-incompatibility, style and stigma