6种放线菌抗药性标记及其在植株体内定殖能力测定  

Resistance Tag of 6 Strains of Actinomyces and Their Colonized Ability in Plants

作　　者：郭小芳[1] 宗兆锋[1] 杨洪俊[1] 

机构地区：[1]西北农林科技大学植保学院,陕西杨凌712100

出　　处：《西北农业学报》2005年第2期69-73,共5页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：农业部农业结构调整重大技术研究专项(2002-08-03A);教育部"春晖计划"启动项目。

摘　　要：用抗药性标记法对6种生防放线菌进行标记,并测定其在黄瓜、小麦、大麦以及大豆体内的定殖能力,发现15-3可以在黄瓜、小麦以及大麦的根部定殖,在黄瓜根部的定殖能力强于在其它两种作物根部的定殖能力。6种生防菌对黄瓜、小麦、大麦以及大豆种子萌发或苗期生长没有明显抑制作用;菌株15-3对大麦、黄瓜以及大豆具有不同程度的促生作用;菌株SE2和A4发酵液对黄瓜的生长有抑制作用。Six strains of actinomyces candidates with significant biocontrol potential was tagged with antibiotics, fungicides or combination of them. The result showed that cucumber, wheat and barley plant could be colonized by strain 15-3 and the amount of strain 15-3 in root of cucumber was more than that in the other two crops. Six strains of tested actinomyces had no inhibition on germination of seeds and growth in seedling stage of cucumber, wheat, barley and soybean, and the development of tested plants could be promoted by strain 15-3.

关 键 词：定殖能力 抗药性 放线菌 测定 体内 植株 抑制作用 根部定殖 苗期生长 种子萌发 促生作用 黄瓜 大麦 标记法 小麦 大豆 生防菌 发酵液 菌株 作物 

分 类 号：S476.1[农业科学—农业昆虫与害虫防治]