辣椒疫病拮抗放线菌的筛选及防治试验初报
易龙,肖崇刚,张迎芳,吴琼
西南大学植物保护学院,重庆 400716
Preliminary Report about Screening of Antagonistic Actinomycetes against Phytophthora
capsici and Its Control Effect
YI Long,XIAO Chong-gang,ZHANG Ying-fang,WU Qiong
College of Plant Protection,Southwest University,Chongqing 400716,China
摘要 通过平板对峙培养法,从辣椒根际土壤中分离获得的276个分离物中筛选出对辣椒疫病菌有较强
拮抗作用的放线菌7株。室内测定其对辣椒疫病菌的抑菌带宽为7.8~13.0 mm;温室盆栽防治试验表明,
菌株CQ21-3对辣椒疫病控病效果最好,控病效果达73.2 %;无菌发酵液试验表明,放线菌CQ21-3无菌发
酵液在一定浓度范围内均能有效抑制疫病菌菌丝生长,降低孢子萌发率。
关键词 :
辣椒疫病 ,
放线菌CQ21-3菌株 ,
拮抗作用
Abstract :276 isolates were obtained from rhizospheric soils of pepper.It was found that 7
potential biocontrol actinomycetes showed good antagonistic effects on Phytophthora capsici
by pairing culture.The inhibition zone diameter ranged from 7.8 mm to 13.0 mm.The result
from the experiment trial at greenhouse showed that CQ21-3 strain could effectively control
the pepper phytophthora blight,the control efficiency reached 73.2 %.The result from
culture filtrate showed that CQ21-3 isolate was effective for inhibiting mycelium growth
and reducing spore germination of P.capsici in certain of concentration.
收稿日期: 2008-10-12
引用本文:
易龙;肖崇刚;张迎芳;吴琼. 辣椒疫病拮抗放线菌的筛选及防治试验初报[J]. 中国蔬菜, 2009, 1(12): 28-32.
YI Long;XIAO Chong-gang;ZHANG Ying-fang;WU Qiong. Preliminary Report about Screening of Antagonistic Actinomycetes against Phytophthora
capsici and Its Control Effect. , 2009, 1(12): 28-32.
链接本文:
http://www.cnveg.org/CN/ 或 http://www.cnveg.org/CN/Y2009/V1/I12/28
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