不同种源羊草在不同水分条件下的性状比较

用 1 994年从内蒙古不同地区采集到的羊草 (Leymuschinensis)种子进行栽培试验 ,经过不同数量水分处理 ,对不同地区的 1龄羊草的性状进行比较分析 ,发现羊草的不同性状其稳定程度不一 ;采用Thomas和Bazzaz的定性交叉相互作用的评估方法 ,发现羊草虽然是一种耐旱植物但不是喜旱植物 ,在水分充沛的情况下 ,羊草的长势远好于干旱的情况 .在各样点中阿巴嘎旗宝格达苏木羊草的性状比较稳定 ,在各性状中无性繁殖方面的性状(如分蘖数、根茎芽数等 )的稳定性高于营养方面的性状 (如株高、叶长等 ) .

Comparison of characteristics of different provenance Leymus chinensis grown under different water-stress conditions.

Seeds of Leymus chinensis collected from different areas of Inner Mongolian are cultivated under different water stress conditions, and characteristics of their one year old plants are compared. The results show that the characteristics of Leymus chinensis have different stability. Through analyses of qualitative cross over interaction, it is suggested that L.chinensis is a kind of drought enduring plant, but its growing is far better under full water condition than under lack water condition. Of all kinds of L.chinensis, A Qi has the most stable characteristics, and of all characteristics, the asexual reproduction (such as tillers, buds of root stock) is more stable than the nutrition (such as plant height, leaf length).