The turion is an sexless reproduction organ of potaniogeton crispus which resistances to unfavourable eclogical environment. When the pH value, light nutrient etc in the environment is beyond suitable value, the formation of the turion can be hastened, especially'effect of high pH value is obvious.The turion of newly forming have a resting period in which vary with water temperature and light. It is about fifty days at 22~25℃ in light. High temperature (>30℃) and darkness can lead to increase resting period...
【基金】
水利部科学发展基金
【正文快照】
范草(Pot。;091时。、。落毕、)的繁殖器官—种子、断枝、鳞枝(t urion)在适宜的条件下均可发育成新株。但对其种群增长和扩散意义最大者应首推鳞枝。关于鳞枝的研究,近年来刁正俗(1985)〔’〕、陈洪达(1985)〔3〕、Kad。n。(1982)〔6〕、Kunii(1982)〔7〕、Rogers and Breen(l
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