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Effects of Media on Pathogenicity of Phytophtoora Capsici

Qi Rende et al (Plant Protection Institute, AAAS, Hefei 230031)  
Medium had relation to biological characters including colony morphology, growth rate, sporangium production and pathogenicity of Phytophthora capsici Leonian.The results showed that the isolatte growth on OMA medium had greater growth rate and stronger virulence, but the virulence had no relation to growth rate.If the isolate of P.capsici were cultured on same media for a long period, the pathogenicity of the isolatie would differentiate.The results also showed that nutrition was one of the factors conducting to pathogenicity differentiation.
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