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作 者 ：王慧英，黄维南

期 刊 ：核农学报 1995年 9卷 04期 页码：0-0

关键词：毛萼田菁；茎瘤；亚显微结构；固氮酶活性；

Keywords:Sesbania rostraata, stem nodules, submicroscopic structure, nitrogenase activity,

摘 要 ：毛萼田菁茎瘤的皮层细胞含有叶绿体，叶绿体含有基粒类囊体膜系和淀粉粒，茎瘤能进行光合作用，但其叶绿素含量很低。不同成熟度茎瘤的叶绿素含量差别不大，但它们的固氮酶活性差别较大。不同成熟度茎瘤含菌组织细胞中类菌体的形态结构和数量不同。结果表明，毛萼田菁不同成熟度茎瘤固氮酶活性的差异，主要取决于茎瘤含菌组织细胞中类菌体的发育程度及其数量。

Abstract:The cortical cells of stem nodule in Sesbania rostrata have chloroplasts that containstacking grana thylakoid membrane and granular starch.The stem nodules with capacity ofphotosynthesis contains only little chlorophyll.The contents of chlorophyll among differentstages of nodule development have little difference.However,there are great differencesamong tkeir nitrogenaseactivity,their morphological structure and the quantity of bacterioldin the tissue containing rhizobia. The results show that the difference between their nitroge-nase activity at different stages of nodule development depend mainly on the bacteriold derel-opment and the quantity of bacterioid in the tissues containing rhizobia.

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