2009•Zhongguo shucaiRequires access

Preliminary report about screening of antagonistic actinomycetes against Phytophthora capsici and its control effect.

Yi Long, Xiao Chonggang, Zhang YingFang, Wu Qiong

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.

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Key concepts: Phytophthora capsici, Pepper, Mycelium, Phytophthora, Blight, Biology, Spore germination, Horticulture