| 摘要: |
| 由当地分离纯化并回接有效而获得的4株快生型大豆根瘤菌株，通过形态、生理鉴定，表明与慢生型菌株有明显差异；在菌株与大豆品种亲和性的盆栽试验中，其中A034菌株与“徐州四号”、A034与“东解选”大豆品种间具有良好共生效应；其株高、茎叶干重及含氮量、株瘤数与瘤重、及固氮酶活性等，均明显高于不接种对照；固氮率分别提高为48.1％与44.5％； |
| 关键词: 快生型大豆根瘤菌，菌株特性，共生效应，固氮率 |
| DOI： |
| 分类号:S565.101 |
| 基金项目: |
|
| Biological Characteristics of Four Fast-Growing Rhizobium japonicum Strains |
|
Cheng Lijuan Liu Hailun,Cheng Lijuan Liu Hailun
|
| Abstract: |
| Four fast-growhg Rhizobium japonicum strains were isolated,purified and back-nodulated to soybeans in the local areas.The results from the identification of morphology and physiology showed that there were obvious differences between these strains and slow-growing Rhizobium japonicum strains.In the pot experiments of an ffinity between the strains and soybean cultivars,the excellent symbiotic effect was found among strain A034 and soybean cultivar-Xuzhou NO.4 and strain A032 and soybean cultivar-Dong Xiexuan,whose plant height,dry weight and nitrogen contents of stems and leaves,and also activity of nitrogenase were higher than those of the control soybean plants(without inoculation).Nitrogen-fixing efficiency was increased by 48.1% and 44.5% respectively. |
| Key words: fast-growing Rhizobium japonicum,strain characteristics,symbiotic effect,nitrogen-fixing efficiency |
