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广东两种决明属(Cassia)植物根瘤菌的生物学特性
靖元孝,陈兆平
作者单位
靖元孝,陈兆平  
摘要:  调查了广东地区10种Cassia植物结瘤状况,仅山扁豆(C.mimosoides)和圆叶决明(C.rotundifolia)结瘤,从山扁豆和圆叶决明各分离到1株根瘤菌并鉴定为慢生型.在所试的10种Cassia植物中,2株Cassia植物根瘤菌除了与山扁豆和圆叶决明结瘤外,均不与其余8种Cassia植物结瘤;同样,3株蝶形花科植物根瘤菌和3株含羞草科植物根瘤菌除了与山扁豆和圆叶决明结瘤外,也均不与其余8种Cassia植物结瘤.此外,2株Cassia植物根瘤菌均能与所试5种蝶形花科和4种含羞草科植物结瘤.2株Cassia植物根瘤菌在碳源利用、耐盐性、耐酸碱度及5种酶的活性等特性方面,与3株蝶形花科植物根瘤菌和3株含羞草科植物根瘤菌极为相似.
关键词:  根瘤菌  Cassia  Cassiarotundifolia  Cassiamimosoides
DOI:10.3969/j.issn.1005-3395.1996.2.008
分类号:
基金项目:
BIOLOGICAL CHARACTERISTICS OF RHIZOBIUM ISOLATED FROM TWO CASSIA SPECIES FROM GUANGDONG
Jing Yuanxiao,Chen Zhaoping
Abstract:  Nodulation of ten Cassia species from Guangdong province was surveyed. It wasshown that the nodules could appear only in Cassia mimosoides and C. rotundifolia. Tworhizobial strains were isolated each from C. mimosoides and C. rotundifolia and identifiedas slow-growing Rhizobium. Among ten Cassia species tested, the two rhizobial strains fromCassia failed to nodulate the other eight Cassia species, however, they are capable ofnodulating C. mimosoides and C. rotundifolia. Likewise, three rhizobial strains fromMimosaceae and three from Papilionaceae were unable to nodulate other eight Cassia speciesexcept C. mimosoides and C. rotundifolia. Moreover, the two rhizobial strains from Cassiawere able to nodulate four legumes of Mimosaceae and five legumes of Papilionaceae. Thetwo isolates from Cassia were similar to three isolates from Mimosaceae and three fromPapilonaceae in utilization of carbon sources, salt tolerance, PH tolerance and five enzymeactivities.
Key words:  Rhizobium  Cassia  Cassia rotundifolia  Cassia mimosoides

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