Temperature dependence of seedling establishment of a perennial, Dioscorea tokoro
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 11deg-20degC. At around 17deg-20degC the first leaf petiole of the seedling elongated and quickly set the first leaf b...
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| Veröffentlicht in: | Journal of plant research 2002-02, Vol.115 (1117), p.55-57 |
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| creator | Zhong, X. (Chinese Academy of Agricultural Sciences, Beijing (China)) Nishino, E Okagami, N |
| description | 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 11deg-20degC. At around 17deg-20degC the first leaf petiole of the seedling elongated and quickly set the first leaf blade at a position enabling photosynthesis. At temperatures higher than 20degC petiole elongation was retarded, and seedlings formed a rhizome and established as a perennial. The rhizome size increased with temperature up to 29degC. 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. |
| doi_str_mv | 10.1007/s102650200008 |
| format | Article |
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(Chinese Academy of Agricultural Sciences, Beijing (China)) ; Nishino, E ; Okagami, N</creator><creatorcontrib>Zhong, X. (Chinese Academy of Agricultural Sciences, Beijing (China)) ; Nishino, E ; Okagami, N</creatorcontrib><description>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 11deg-20degC. At around 17deg-20degC the first leaf petiole of the seedling elongated and quickly set the first leaf blade at a position enabling photosynthesis. At temperatures higher than 20degC petiole elongation was retarded, and seedlings formed a rhizome and established as a perennial. The rhizome size increased with temperature up to 29degC. 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| subjects | Aquatic plants DIOSCOREA GERMINATION GROWTH Leaves PETIOLES Photosynthesis Plant growth RHIZOMES Seed germination SEEDLINGS SEEDS TEMPERATURE |
| title | Temperature dependence of seedling establishment of a perennial, Dioscorea tokoro |
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