Etude Comparée de L'Evolution des Grains de Pollen dans les Fleurs Cléistogames et les Fleurs Chasmogames de Viola sp. (Violacees)

1 January 1977

journal article
research article
Published by International Society of Cytology in CYTOLOGIA

Vol. 42 (2) , 233-240
https://doi.org/10.1508/cytologia.42.233

Abstract

Descriptions and comparisons of the ultrastructure of pollen in the cleistogamous and chasmogamous flowers of a Viola sp. are given. Divergences become more important at the end of ontogeny. In the mature pollen grains of cleistogamous flowers, starch in the plastids is always abundant and pulverization of dictyosomes into microvesicles is not important. At maturity the pollen grains of chasmogamous flowers show leucoplastids and numerous microvesicles of Golgi apparatus.

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