OCCURRENCE AND DEVELOPMENT OF A FILIFORM APPARATUS IN THE EGG OF PLUMBAGO CAPENSIS
作者： David D. Cass
DOI: 10.1002/J.1537-2197.1972.TB10093.X
关键词:
摘要: A B S T R C Micropylar wall extensions in the egg of Plumbago capensis arise as small pegs periodic acid-Schiff's-positive material soon after is organized. These inward projections increase size, becoming extensive near anthesis. Some branching filiform apparatus occurs. In mature embryo sacs micropylar portion, with lowermost portion included, becomes entrenched nucellus. The possible significance this "gametic transfer cell" discussed relation to apparent absence synergids from reduced sac Plumbago.
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