摘要
通过对贵州省豆科植物结瘤固氮资源的调查,共采集根瘤标本242份,分属豆科植物42属103种及变种,其中蝶形花亚科、含羞草亚科、云实亚科植物的结瘤率分别为95%,75%和5%;采集的根瘤中,96%生于寄主的侧根,形状以球形、长柱形为主,颜色多为白色、褐色.对分离纯化的55株根瘤菌进行了回接试验,回接结瘤率为33%.生态条件是影响根瘤的大小、数量以及有效性的原因之一.
242 nodule samples were collected which of them belong to 103 species and 42 genera according to our investigation of the nodulation and nitrogen-fixing resources of legumes in Guizhou Province. The results showed that the rates of having nodules in the three sub-family of legume, Papilionoideae, Mimosoideae and Caesalpinioideae, are 95%, 75% and 5% respectively. About 96% of root nodules grow at the lateral root of host, with spherical or columnar in shape and white or brown in color. 55 rhizobial strains isolated from the nodule samples were reinoculated with 33% nodulation rate. The size, number and validity of root nodules were related to ecological environment.
出处
《西南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2004年第3期445-450,共6页
Journal of Southwest China Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(39730010).
关键词
豆科植物
资源调查
根瘤菌
legume
resource investigation
rhizobia
