【摘要】 利用YMA培养基,从新鲜花生根瘤中分离得到黄冈土著花生根瘤菌6株,分别编号为HG-1、HG-2、HG-3、HG-4、HG-5、HG-6。选取黄冈地区广泛使用的3个花生品种(红花1号、红花2号、中花1号)对6个菌株进行盆栽回接实验,结果显示:接种根瘤菌的花生植株都有结瘤,所有菌株均为花生根瘤菌。通过比较根瘤数量和质量,初步筛选出与花生品种红花1号、红花2号、中花1号具有最佳共生固氮匹配关系的根瘤菌菌株分别是HG-5、HG-3、HG-2。更多还原

【Abstract】 6 strains of indigenous rhizobia in the area of Huanggang have been isolated from fresh peanut nodule extracts with YMA medium.They were separately named as HG-1,HG-2,HG-3,HG-4,HG-5 and HG-6.The isolated strains were inoculated back onto 3 varieties of peanut plants(Honghua-1,Honghua-2,Zhonghua-1)that are widely sowed in Huanggang.The results of the experiment in sand bottles show that all the peanut plants can nodulate after being inoculated with the strains,and all the isolated strains are peanut rhizobia.By comparing quantity and weight of nodule,it is known that the strain HG-5symbiotic nitrogen-fixing effect matches best with the peanut plant Honghua-1.So does HG-3with Honghua-2,and HG-2with Zhonghua-1.更多还原