琉球列島のサトウキビ畑における雑草の生理・生態 : 第1報タチスズメノヒエ種子の休眠覚醒と発芽に及ぼす光・温度・貯蔵条件の影響

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The present study deals with the effects of temperature and light on the awakening from dormancy and grmination of the seeds of Paspalum urvillei Steud. stored under different conditions and the effects of light, temperature and moisture on the induction of the secondary of the seeds. 1. The seeds were subjected to a regime of 13 hour light at high temperatures and 11 hour dark at low temperatures. Such temperature variations were found to strongly affect the awakening from dormancy and germination of the seeds in 19 of the 21 treatments. 2. In case of favorable temperature variations, the dormant seeds germinated even if the light conditions were not satisfactory, whereas germination required light when the temperature variations were unfavorable and the seeds had not awoken fully from dormancy. 3. The seeds germinated at 20-35℃, the optimum temperatures being 30-35℃. 4. The secondary dormancy was found to be induced readily when light and temperature were so controlled as to inhibit germination. 5. Seeds stored in a desiccator and those stored outdoors under air-dried conditions at 5℃ showed no awakening from dormancy during the 90-day storage period, while a slight degree of awakening from dormancy was observed in seeds stored indoors under air-dried conditions. Seeds stored under moist field conditions and upland field conditions showed a remarkable degree of awakening from dormancy. 6. The differences in the storage conditions appeared to have no particular effect on the viability of seeds at any time during the 90-day storage period.
日本雑草学会の論文
1985-01-28

琉球列島のサトウキビ畑における雑草の生理・生態 : 第1報タチスズメノヒエ種子の休眠覚醒と発芽に及ぼす光・温度・貯蔵条件の影響

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琉球列島のサトウキビ畑における雑草の生理・生態 : 第1報 タチスズメノヒエ種子の休眠覚醒と発芽に及ぼす光・温度・貯蔵条件の影響

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琉球列島のサトウキビ畑における雑草の生理・生態 : 第1報タチスズメノヒエ種子の休眠覚醒と発芽に及ぼす光・温度・貯蔵条件の影響