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Ультраскульптура и ультраструктура семян представителей родов Lotus, Kebirita и Antopetitia (Leguminosae – Loteae) в систематическом и эколого-географическом контекстестатья
- Автор: Крамина Т.Е.
- Сборник: Мемориальный каденский сборник / Ред. Л.И. Лотова, А.К. Тимонин
- Год издания: 2014
- Место издания: МАКС Пресс Москва
- Первая страница: 133
- Последняя страница: 170
- Аннотация: SEED ULTRASCULPTURE AND ULTRASTRUCTURE IN THE GENERA LOTUS, KEBIRITA AND ANTOPETITIA (LEGUMINOSAE – LOTEAE) IN TAXONOMIC AND ECO-GEOGRAPHICAL CONTEXT. Seed ultrasculpture and ultrasrtucture was studied using SEM in 39 species of the genus Lotus L.(tribe Loteae) and two monotypic genera of the same tribe, Kebirita Kramina et D.D. Sokoloff and Antopetitia A. Rich. Studied Lotus species are the members of six sections: Lotus,Tetragonolobus, Lotea, Pedrosia, Heinekenia and Chamaelotus. The approach of W. Barthlott (1981) was used in descriptions of testa sculpture. This approach allows detaching primary, secondary and tertiary sculpture levels. Ultrasculpure was described on the middle seed face and around the hilum. In the analysis of hilum ultrastructure, the shape of hilum and micropyle and the width of rim aril were particularly studied. It was revealed, that the sculpture on the middle seed face is the most variable in Lotus, while on the hilum side it is conservative. Strict correspondence between ultrasculpture and ultrastructure of the seed and sectional subdivision of Lotus was not revealed. Similar sculpture types were observed in different Lotus sections; however, some tendencies of seed coat composition in certain sections and species groups can be specified. Eco-geographical significance of characters of seed coat surface is discussed. The seeds of Kebirita roudairei are similar to those of Lotus, as a whole, and in Antopetitia abyssinica a special type of seed surface, i.e. mounds, is formed. This surface type may appear several times in parallel in the tribe Loteae, because it was found in some other genera of the tribe.
- Добавил в систему: Крамина Татьяна Евгеньевна