スカシタゴボウの生態に関する研究 : 第1報種子の休眠性とその覚醒条件

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Rorippa islandica is a common annual weed in the Tohoku district. In order to analyse the life cycle of R. islandica, dormancy and external conditions inducing germination of the seeds were investigated in the experiments reported herein. The results are as follows: (1) The seeds obtained immediately after harvesting and the seeds air-dried under laboratory conditions did not germinate in darkness regardless of the imbibition temperatures ranging from 10 to 30℃. In light, they germinated relatively well at alternative temperature regimes such as 30/20℃. There was no or little germination at constant temperatures even in light. These light and alternative temperature requirements of the seeds for germination did not vary with the increase in the duration of air-dry storage under room conditions. (2) The high temperature (35〜40℃) treatments under humid and dark conditions were very effective in breaking seed dormancy and garminte at a constant temperature in light. The chilling treatment at 5℃ under humid and dark conditions was moderately effective in breaking seed dormancy and stimulated germination only at 30/20℃ in light. Acid scarification with H_2S0_4 and physical scarification by rotating seeds with quartz sand showed a similar stimulatory effect on seed germination to that with the high temperature treatment. (3) A short period of exposure to light, especially red at 630nm induced the germination of the seeds treated at a high temperature. Photoreversibility between far red and red was observed in the induction of seed germination.
日本雑草学会の論文
1984-12-17

スカシタゴボウの生態に関する研究 : 第1報種子の休眠性とその覚醒条件

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スカシタゴボウの生態に関する研究 : 第1報 種子の休眠性とその覚醒条件

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スカシタゴボウの生態に関する研究 : 第1報種子の休眠性とその覚醒条件