克隆整合(Clonal integration)和表型可塑性(Morphological plasticity)是克隆植物种群生态学研究的热点问题。以松嫩草地南部羊草(Leymus chinensis)草甸内分布的匍匐茎型无性系植物獐毛(Aeluropus littoralis var. sinensis)为实验材料,在简易温室内对獐毛实验种群进行了三个光照梯度、三个施肥水平处理、遮光与施肥互作处理以及间隔子(Spacer)相连与断开处理的实验,观测了獐毛种群分株高度(Height of ramets)、平均叶长(Mean length of leaves)、分蘖数(Number of tillers)、总生物量(Total biomass)、根根冠比(Root biomass/shoot biomass )指标,并进行了单因素方差分析和平均数多重比较,阐明了獐毛种群对遮光及施肥处理的表型可塑性反应,通过同质和异质环境下相连分株和分离分株的生长反应的对比实验,讨论了整合作用是否存在及其调节分株对间表型可塑性中的作用。研究结果表明:
(1)克隆植物獐毛实验种群的分株对在遮光影响下,无论是间隔...
【英文摘要】
Clonal integration and phenotypic plasticity are two of the emphases in the research ofclonal population biology of plants. In this paper, I conclude my study on the Leymus chinesismeadow of Songnen Plain. In the simple conservatory, I make the experiment on A. littoralisvar. sinensis population which is of creeping stem with three steps of light, connection anddisconnection of spacer, and then observe the indicators such as Height of ramets (HR), Meanlength of leaves (MLL), Number of tillers (NT), Root bio...