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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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О строении плода Scheuchzeria palustris (Scheuchzeriaceae, Alismatales)статья
- Авторы: Ремизова М.В., Соколов Д.Д.
- Сборник: Мемориальный каденский сборник [Kaden's Memorial Book]
- Редакторы: Лотова Людмила Ивановна, Тимонин Александр Константинович
- Год издания: 2014
- Место издания: МАКС Пресс, Москва
- Первая страница: 173
- Последняя страница: 181
- Аннотация: Remizowa M.V., Sokoloff D.D. FRUIT STRUCTURE IN SCHEUCHZERIA PALUSTRIS (SHEUCHZERIACEAE, ALISMATALES). The fruits of Scheuchzeria have been traditionally de-scribed as (multi-) follicles. The follicular interpretation was based mainly on visual investigation of mature fruits or on interpreting the gynoecium of Scheuchzeria as being apocarpous. Detailed anatomical studies of gynoecium have shown that a short symplicate zone (paracarpous region) is developed at the gynoecium base. The ovules (two per carpel) are attached in the symplicate zone. Data on gynoecium anatomy doubted the follicular interpretation of Scheuchzeria fruit. In our study, we traced the process of fruit dehiscence and investigated possible anatomical mechanisms for this. During fruit maturation, the ventral carpel slits in the symplicate zone postgenitally fuse to give a syncarpous trilocular ovary. The seeds while increasing their size became shifted in the free parts of carpels. The free parts themselves enlarge and became bent backwards to expose the ventral slits. The symplicate zone remains short. In the mature fruit, it is almost indistinguishable and can be revealed only using anatomical approach. The fruit typically dehisces both along the ventral slit and the dorsal vein resulting in separation of two valves. Here, we reported the formation of the valves apparently for the first time. The anatomical structures that provide fruit dehiscence are strands of sclerenchyma armoring the vascular bundles and the parenchymatous sheath of the dorsal vein. The latter consists of small thin-walled cells. In terms of structure, the fruit can be treated as a capsule. Visually, it behaves as a follicle with both dorsal and ventral carpel dehiscence, which is unusual for typical follicles. Scheuchzeria is the only known member of tepaloid alismatids that possesses typical syncarpous gynoecium of plicate carpels. Other well-investigated members of the group develop apocarpous gynoecia (sometimes with carpels united via floral centre) and/or possess ascidiate carpels.
- Добавил в систему: Тимонин Александр Константинович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | текст статьи | Remizowa_Sokoloff_Scheuchzeria.pdf | 2,2 МБ | 14 января 2015 [Sokoloff-v] |