陕西豆科植物根瘤菌资源调查

Investigation of Rhizobium of Leguminous Plants in Shaanxi Province

在陕西关中、陕北地区,共采集到28属59种豆科植物根瘤样品930份,分离到710株根瘤菌,其中新发现地八角(Astragalus bhotanensis Baker)、硬毛棘豆(Oxytropis hirta Bunge)、塔落岩黄耆(Hedysarumfruticosum Pall)、毛掌锦鸡儿(Caragana leveillei kom)等10种豆科植物能够结瘤。在对豆科植物的结瘤特性比较研究后发现,豆科植物根瘤大小、数量、形状、颜色、着生部位除与寄主植物种有关系外,还与其所处的生态环境有很大的关系。该调查为根瘤菌在农业生产及生态环境建设中的应用提供宝贵的种质资源。

930 nodule samples from 59 species of legumes belonging to 28 genera were collected,720 rhizobial strains were isolated,and 10 species of legumes such as Astragalus bhotanensis Baker, Oxytropis hirta Bunge,Hedysarum fruticosum Pall,Caragana leveillei Kom etc were not reported according to our investigation of rhizobia resources of leguminous plants in the middle and northern regions of Shaanxi province.Through comparing and researching on nodule characteristics,it is found that nodule characteristics including size,number,shape,color and growth site was not only related to legume species,also greatly related to ecological condition.This investigation will provide the valuable resources of rhizobia for agricultural production and ecological environment construction.