摘要
本文对产于东北地区的毛百合进行了自然状况下的生长与繁殖研究。结果发现在不同的生境下毛百合的生长发育有三种类型,即生长旺盛类型;可完成生活史,但生长受到一定限制类型;不能完成生活史,只能营养生长类型。 在毛百合完成其生活史的转化中光是一个重要限制因子。在全光的46.6％的生境中毛百合尚能大部向成株转化,并开花结果完成生活史,而在相对光照为15.6％的林下,毛百合转化为成株的概率很少。 由于长期适应环境的结果,毛百合具有两种繁殖对策,一是在全光下或不低于相对光照的46％的生境下,有性与无性繁殖同时进行;而在低于相对光照的15％以下时,除个别光强处外,毛百合主要以鳞茎繁殖和生长,一旦林地受干扰后,则马上开花结实,营有性繁殖。
The growth and reproduction of Lilium dauricum, distributing in theNortheastern part of China in nature, was studied. Results showed thatpattern of growth and development in different habitat may be classifiedinto 3 types: the rigorous growth type, the type whose growth is some-what suppressed, but is still able to complete the life cycle, and the typeonly grows vegetatively, being not able to complete the cycle. Among the factors, affecting the development from one stage of thelife cycle to the other, light is an important limiting one. Under the ha-bitat of 46.6% of full light, most of L. dauricum plants are able to de-velop into adults, flower and fruit, thus complete the life cycles. But, inthe relative light intensity of 15.6% under forests, the probability of L.dauricum plants to become adults was very low. Du to long-term adaptation to the enviroment, L. daulicum developedtwo strategies of reproduction, In the habitat of full light or not lower-than 46% of relative light intensity, sexual and asexual reproduction oc-cur simultaneously. But, when the relative light intensity is lower than15%, L. dauricum mainly reproduces by bulds, which the exception ofthose under the intensive light. If the forest is disturbed, the plantsof L. dauricum immediately will flower and fruit, chang into sexualrepro-duction.
出处
《植物研究》
CAS
CSCD
北大核心
1992年第3期301-307,共7页
Bulletin of Botanical Research
基金
黑龙江省自然科学基金
关键词
毛百合
生长
繁殖
Lilium dauricum
growth
reproduction
