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Comparative morphology of monocot pollen and evolutionary trends of apertures and wall structures

The Botanical Review volume 49, pages 331–379 (1983)Cite this article

Abstract

Data on pollen aperture and wall ultrastructure are reviewed for the monocots. New ultrastructural data on 30 taxa representing 18 monocot families are also presented. The evolutionary trends of apertures and pollen wall structure are discussed and it is proposed that the evolutionary trends of pollen apertures and wall structure in the monocots parallel those proposed by Walker for the dicots. However, the importance of these trends differ for monocots, suggesting that the selective pressures affecting pollen wall and aperture evolution in dicots and monocots have been similar, but with different emphasis.

Sommaire

Données expérimentales sur l’ouverture de pollen et la ultrastructure du mur des Monocotylédones sont revus. Les nouvelles données expérimentales sur 30 taxa, représantantes 18 familles de Monocotylédones sont aussi presentés. Les cours évolutionnaires des ouvertures et structure du mur de pollen sont discutés et c’est proposé que les cours évolution-naires des ouvertures de pollen et structure du mur en Monocotylédones se mettent en parallèle de ceux proposes par Walker pour les Dicotylédones. Toutefois l’importance de ces cours sont différents pour les Monocotylédones, donnent que la selection naturelle touchant le mur de pollen et les cours évolutionnaires des ouvertures en Dicotylédones et Monocotyledones ont été semblables mais avec des accentuations différantes.

Абстракт

Конспект. Однодольны е обозреваются на дан ные ультраструктуры пыльцевой апертуры и стены. Новые ультраст руктурные данные 30 таксонов, представля ющих 18 родов однодольн ых, также представлены. Обсуждаются эволюци онные направления ап ертур и структуры пыльцевой стены, и предлагается, что эволюционные направления пыльцев ых апертур и структур ы стены для однодольных параллельным тем, кот орые Валкер предлага л для двудольных. Однако, важность этих направлений различа ется для однодольных в том, что отборные дав ления, влиявшие на эво люцию пыльцевой стены и апертуры для д вудольных и однодоль ных, были похожи друг на друга, но отлич ались в важности.

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  1. Michael S. Zavada

    Present address: Department of Biology, Indiana University, Jordan Hall 138, 47405, Bloom-ington, Indiana

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    Michael S. Zavada

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Zavada, M.S. Comparative morphology of monocot pollen and evolutionary trends of apertures and wall structures. Bot. Rev 49, 331–379 (1983). https://doi.org/10.1007/BF02861086

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