接种量对费氏中华根瘤菌HN01DL根圈定殖与结瘤的影响  

Effects of inoculation rate on root colonization and nodulation in soybean rhizosphere by Sinorhizobium fredii HN01DL

作　　者：李友国[1] 周俊初[1] 

机构地区：[1]华中农业大学农业部农业微生物重点实验室,武汉430070

出　　处：《生态学杂志》2004年第2期19-21,共3页Chinese Journal of Ecology

基　　金：国家 8 63高技术研究发展计划课题 ( 2 0 0 1AA2 14 0 12 );国家重点基础研究发展规划资助项目 ( 0 0 1CB10 89);教育部博士学科点基金资助项目 ( 980 40 1)

摘　　要：在灭菌土和未灭菌土盆栽系统中 ,研究了大豆种子的表面初始接种量对费氏中华根瘤菌HN0 1DL在大豆根圈中的定殖动态与结瘤的影响。结果表明 ,与 3个接种量对应的早期根圈定殖动态和水平有明显差异 ,但随着宿主植物根系的生长其差异逐渐减小 ,整个定殖动态曲线的变化和定殖密度趋向一致 ,并且发现 3个不同的初始接种量对HN0 1DL在大豆黑农 33根系上的结瘤数量和占瘤率没有显著影响。The effects of different initial inoculate rate on the surface of soybean seed on root colonization dynamics and nodulation in soybean rhizosphere by Sinorhizobium fredii HN01DL in sterilized and non-sterilized soil pot microcosm were studied. The results showed that the root colonization dynamics and level at the very early stage were significantly different due to the three different inoculation rates. But the difference decreased gradually with the growth of host plant root system. The entire colonization dynamics curve and colonization density tended to change in the same direction. It was also found that there was no obvious influence on nodulation number and nodule occupancy by three different initial inoculation rates in the root system of host soybean Heinong 33 variety.

关 键 词：费氏中华根瘤菌 接种量 大豆根圈 定殖 结瘤 

分 类 号：S154.3[农业科学—土壤学]