摘要
鳞枝是菹草抵御不良生境的一种延存器官。当环境中的pH、光照、营养盐等偏离正常值时,均可促进鳞枝的形成,但高pH的作用特别突出。 刚形成的鳞枝都有一个自发休眠期。休眠时间的长短依水温、光照而不同,在水温22～25℃有光照的条件下约为50天;高温(>30℃)、无光会延长其休眠期,低温(13℃)和红光刺激可使休眠期缩短。休眠期已满的鳞枝在水温2～35℃、pH3～10、盐度<11‰的环境中,无论光照条件如何均可萌发。
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, whereas lower temperature (13c) and red light can reduce resting, period.In sprite of light or darkness under water temperature is 2~35℃, pH3~ 10, salty is less than 11‰, the turions which already perform the resting period can germinate.
出处
《大连水产学院学报》
CSCD
1989年第3期1-9,共9页
Journal of Dalian Fisheries University
基金
水利部科学发展基金
