【摘要】 对相思树种根瘤菌的生物学特性进行了较为系统的研究 ,结果表明 :从广西不同地点的相思树种分离、纯化的 1 5株根瘤菌均具有典型的根瘤菌的个体形态和菌落特征 ,生理生化指标接近 ,与厚荚相思幼苗共生结瘤 ,可分为快生菌和慢生菌 ,多数相思树种根瘤菌能利用无机氮 ,除黑木 1号不能利用乳糖外 ,其余菌株均能利用供试的 5种单糖和 3种双糖作为碳源 ,BTB反应除杂交 1号、台湾 1号和直干 4号菌株产碱外 ,其余菌株均产酸更多还原

【Abstract】 The paper is about the systematic studies of biological characteristi cs of indigenous rhizobia isolated from Acacia spp The results showed th at the re were typical characteristics of rhizobia in 15 stains rhizobia isolated and purified from Acacia spp in Guangxi province Their physiological and bio chemic al characteristics were similar The nodules could appeared in Acacia crassic arpa seedlings inoculated with these rhizobia Among these rhizobia there wer e f a st growers and slow growers rhizobia Most of them could utilized inorganic n itr ogen sources Both five monosaccharides and three disaccharides could be utiliz e d as carbon sources except Heimu 1 could not utilized lactose Most of rhizobia produced acid except Zajiao 1,Taiwan 1 and Zhigan 4 stains produced alkai in BT B reaction更多还原