羊草无性系构件在不同环境下的可塑性变化

对温室内栽培羊草，人为控制温度及光照强度的条件，观测无性系构件的生长与分化的结果表明，羊草的无性系构件生长存在明显的可塑性变化，长时间的低温显著抑制羊草根茎和无性小株的分化（Ｐ＜０．０５），而对分蘖无明显抑制作用．遮荫显著抑制根茎和无性小株的分化（Ｐ＜０．０５），但对分蘖的影响并不显著．羊草的这种生态适应特征有利于对环境变化的适应．

Plasticity of clonal modules of Leymus chinensis in response to different environments.

Observations on the growth and differentiation of Leymus chinensis growing in greenhouse under controlled temperature and light intensity show that there was a significant plasticity for the growth of clonal modules. Lower temperature in a long period shading significantly inhibited the differentiation of rhizome and ramet modules (P<0.05), but did not affect tillering. Such an ecological adaptation would benefit Leymus chinensis to adapt to environmental changes.