Temperature dependence of seedling establishment of a perennial, Dioscorea tokoro

文献类型： 外文期刊

第一作者： Zhong, XL

作者： Zhong, XL;Nishino, E;Okagami, N

作者机构：

关键词： Dioscorea tokoro;Petiole elongation;Rhizome thickening;Seed;Germination;Dormancy;Seeds

期刊名称：JOURNAL OF PLANT RESEARCH （ 影响因子：2.629； 五年影响因子：2.926 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The temperature dependence of seed germination and seedling growth was analyzed in Dioscorea tokoro, an East Asian summer-green perennial. Seeds were able to germinate fully only at 11degrees-20degreesC. At around 17degrees-20degreesC the first leaf petiole of the seedling elongated and quickly set the first leaf blade at a position enabling photosynthesis. At temperatures higher than 20degreesC petiole elongation was retarded, and seedlings formed a rhizome and established as a perennial. The rhizome size increased with temperature up to 29degreesC. Thus, during growth immediately after germination, temperature appears to be a key factor in determining whether the plant establishes as a perennial or grows rapidly without rhizome thickening.

分类号： Q94

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