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首页> 外文期刊>植物研究雑誌 >A Rediscovery of Androdioecy and Pollen Formation in the Hermaphrodite Flower in Nagaimo(Dioscorea opposita Thunb.)
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A Rediscovery of Androdioecy and Pollen Formation in the Hermaphrodite Flower in Nagaimo(Dioscorea opposita Thunb.)

机译：在纳卡莫（Dioscorea Opposita Thunb）的雌雄同体花和花粉形成重新发现

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摘要

Seeds of the wild type of Nagaimo, Dioscorea opposita, were introduced from the People's Republic of China in 1995. The obtained seedlings contained both male and female plants (Kanazawa et al. 2002), and produced abundant seeds under natural conditions in Morioka, northeast Japan. These seeds germinated and seedlings grew. The male plant produced flowers bearing normal stamens and the degenerated pistil. The female plant, we initially thought so because the genus Dioscorea has been regarded to be adioecious plant group with unisexual flowers in each plant, produced hermaphrodite flowers. Thus this Nagaimo turned out to be androdioecious. Embryo sac formation is of the Polygonum type. The filament terminal of the stamens in the hermaphrodite flower, when observed from above, was considerably smaller than that of the male flower. The pollen morphology showed two types in the hermaphrodite flower; one was normal globular shape as the pollen grains of male flowers, and the other was deformed shape ofempty hemisphere like a degassed rubber ball.
机译：1995年从中华人民共和国引入了野生型Nagaimo，Dioscorea Opposita的种子。该获得的幼苗含有雄性和女性植物（Kanazawa等，2002），并在东北摩里加的自然条件下产生丰富的种子日本。这些种子发芽和幼苗生长。雄性植物产生了轴承正常雄蕊和退化的雌蕊。雌性植物，我们最初思考，因为Dioscorea属被认为是每种植物中的单调花卉植物组，产生雌雄同的花朵。因此，这位长大的那个是雄伟的。胚胎形成是薄粒子型。在从上方观察时，雌雄花花中的雄蕊的细丝终端相当小于雄花。花粉形态表明雌雄同体花中的两种类型;一个是普通球状的球形，作为雄花的花粉颗粒，另一个是变形的形状，像脱气的橡胶球一样。

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