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Position: Home > Articles > Screening of Biocontrol Microoganism against Wheat Take-all Journal of Henan Agricultural Sciences 2006,35 (3) 65-67

小麦全蚀病生防微生物筛选研究

作  者:
李乐;孙虎;李洪连
单  位:
河南农业大学植物病理系
关键词:
小麦全蚀病;生防微生物;抑菌活性
摘  要:
通过对峙培养,从160株土壤微生物分离物中筛选出8株对小麦全蚀病菌生长有较强抑制作用的生防菌株,其中,真菌T4菌株抑菌活性最强,为63.41%;其次为S37、B22和YB024,抑菌率分别为60.37%,59.15%,53.17%。对8个生防菌株进一步进行了盆栽和田间小区防效试验,结果表明,放线菌菌株YB024对小麦全蚀病的防效最高,盆栽和小区试验防效分别达到56.90%和53.31%,优于对照杀菌剂立克秀拌种处理;其次为放线菌菌株S89,盆栽和小区试验防效分别为53.77%和36.88%;细菌菌株B22居第3位,盆栽和小区试验防效分别为52.73%和34.69%。
译  名:
Screening of Biocontrol Microoganism against Wheat Take-all
作  者:
LI Le,SUN Hu,LI Hong-lian~*(Department of Plant Pathology,Henan Agricultural University,Zhengzhou 450002,China)
关键词:
Wheat take-all;Biocontrol microorganism;Inhibiting effect
摘  要:
8 biocontrol microorganism strains against Gaeumannomyces graminis var.tritici(G.g.t) were selected from 160 actinomycete,bacteria and fungus isolates by using confront culture each other.Among the 8 biocontrol strains,strain T4 had the highest inhibiting activity(63.41%),the inhibitory rate of S37,B22 and YB024 to G.g.t were 60.37%,59.15% and 53.17% respectively;the actinomycete strain YB024 was the best one both in pots and plots with mean control effect of 56.90%(in pot) and 53.31%(in plot),higher than that of fungicide tebuconazole;Actinomycete strain S89 came the second with mean control effect of 53.77%(in pot) and 36.88%(in plot);The third was bacterial strain B22 with mean control effect of 52.73%(in pot) and 34.69%(in plot).

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