MICROSPORANGIUM WALL STRUCTURE IN TROLLIUS LEDEBOURII (RANUNCULACEAE)
L.V. Buglova
Central Siberian Botanical Garden, SB RAS, 630090, Novosibirsk, Zolotodolonsksja str., 101
astro11@rambler.ru
Keywords: микроспорангии, микроспоры, стенка микроспорангия, эпидермис, эндотеций, средний слой, тапетум, фиброзные утолщения, microsporangium, microspores, pollen sac wall, epidermis, endothecium, middle layer, tapetum, fi brous thickenings. ВВЕДЕНИЕ
Abstract
We studied microsporangium wall structure in Trollius ledebourii Reischenb. The mature microsporangium has a 3 layer wall. Differentiation of its layers occurs centripetally, its correlation with periods of sporogenous tissue development was established. We first detected intermediate type of cells developing between meiocytes and tapetum during abnormal microsporogenesis. Dependence of pollen grains development abnormalities on tapetum and endothecium structure changes was revealed.
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