禾本科牧草的同工酶分析

THE ISOENZYME ANALYSES OF SOME FORAGE GRASSES

本文分析了23种禾本科牧草的酯酶同工酶和过氧化物酶同工酶。结果表明,如果统一取材标准及实验条件严格,酶谱资料是稳定可比较的,有一定的系统分类价值。酶谱并结合其它资料证明了成立鼠茅属(Vulpia)的合理性。酶谱资料还表明,黑麦草属(Lolium)可能是小麦族和羊茅族相互联系的桥梁。根据酶谱距离的资料,讨论了小麦族的某些属间关系。例如,作者发现,酶谱资料显示出鹅观草属与披碱草属赖草与披碱草属之间有更近的亲缘关系。

The peroxidase and esterase isoenzymes of 23 forage grasses were analysed by means of polyacrylamide gel electrophoresis. The results show the zymogram data are stable and comparable and are of value for plant systematics and classification if the experiment conditions are strictly controlled and the material collected are in the same developmental stage. The zymogram evidences and other data such as morphology, etc., support the taxonomical treatment, e.g., to split Festuca into two seperate geaera:Vulpia and Festuca. The author guesses Lolium is probably an intermediate taxa connecting tribe Triticeae with Festuceae according to zymogram and Hu's 'zymogram distance' data. The systematic position and generic relationships of some genera in Triticeae were also discussed, for example,the author discovered the systematic relationships between Roegneria and Elymus and between Leymus and Elymus are probably very close.