论文部分内容阅读
对从辽宁省分离的快生型大豆根瘤菌的鉴定表明,其代时为2.5—4.0小时。对碳源的利用范围较广;13株快生型大豆根瘤菌除了可以利用已糖、五碳糖、三碳糖以外,而且能够利用乳糖、麦芽糖和蔗糖等双糖。在多数基质上产酸,在丙酮酸钠、苹果酸钠培养基上产碱。不利用菊糖。 快生型大豆根瘤菌不与三叶草、草木樨、紫云英、豌豆、菜甄、花生等豆科植物结瘤共生。可在豇豆、绿豆上结瘤。在与栽培大豆“开育八号”共生时,部分菌株接种后的植株干重、全氮量及固氮酶活性与慢生型大豆根瘤菌相当。所测菌株全部放氢。对三株快生型大豆根瘤菌接种大豆,其根瘤的豆血红蛋白含量不低于慢生型大豆根瘤菌。
The identification of fast-growing soybean rhizobia isolated from Liaoning Province showed that the generation time was 2.5-4.0 hours. The wide range of carbon sources used; 13 fast-growing soy bean Rhizobium can use sugar, pentasaccharide, three carbon sugar, but also can use lactose, maltose and sucrose and other disaccharides. Produce acid on most substrates and produce alkali on sodium pyruvate and sodium malate media. Do not use inulin. Fast-growing soybean Rhizobium not with clover, vegetation, wild asparagus, peas, vegetables Zhen, peanut and other legumes nodulation symbiosis. In cowpea, mung bean nodulation. When in symbiosis with cultivated soybean “Kaiyu No.8”, the dry weight, total nitrogen and nitrogenase activity of some strains after inoculation were similar to those of slow-growth soybean rhizobia. The strains tested all discharge hydrogen. Three fast-growing soybean rhizobium inoculation of soybean, nodular hemoglobin content of not less than the slow-growing soybean Rhizobium.