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快生型大豆根瘤菌的结瘤竞争能力是生产应用的重要指标之一。Mcloughlin(1984)的研究指出、快、慢型大豆根瘤菌混合接种时,快型菌在“北京”黑豆的根瘤占优势,而在栽培大豆品种内为劣势。我们用快、慢型大豆根瘤菌以不同比例混合后接种栽培大豆品种“开育8号”和“吉林10号”,收获后以相应菌株抗血清去识别根瘤,观察快、慢型大豆根瘤菌的结瘤竞争能力。同时在山西、河南、山东、辽宁、黑龙江、江西、宁夏、新疆等8个省(区)的24个点采取47个大豆品种(次)的4.251个根瘤,以5个不同血清型的快型大豆根瘤菌的抗血清测定每个根瘤,计数各点快型菌出现的频率。
The nodulation competitiveness of fast-growing soybean rhizobia is one of the important indexes of production and application. Mcloughlin (1984) pointed out that fast and slow soybean rhizobia mixed inoculation, fast bacteria in the “Beijing” black bean nodules dominant, but in the cultivation of soybean varieties inferior. We use fast and slow soybean rhizobia mixed with different proportions of inoculated cultivated soybean varieties “Kaiyu 8” and “Jilin 10”, after harvest to identify the corresponding strains of antitumor nodules observed fast and slow Rhizobium soybean The nodulation competitiveness. At the same time, 4.251 nodules of 47 soybean varieties (times) were taken at 24 points in 8 provinces (autonomous regions) of Shanxi, Henan, Shandong, Liaoning, Heilongjiang, Jiangxi, Ningxia and Xinjiang, Soybean Rhizobia antiserum was assayed for each nodule and the frequency of occurrence of fast-type bacteria at each point was counted.