Aggressive Fitness and Host Specificity of Chinese Isolates of Phytophthora infestans

doi:10.7668/hbnxb.2008.S2.051

Abstract

Abstract: nfection frequency, lesion size, sporulation capacity, and aggressive fitness of 18 isolates of Phytophthorainf estans from potato in potato production areas and 18 isolates of P. inf estans from tomato in tomato production area weretested using three potato and three tomato varieties on the detached leaflets. The result showed that isolates from potatohad higher infection frequency, larger lesion size, stronger sporulation capacity, and more aggressive fitness than those frompotato and isolates from tomato had also higher infect ion frequency, larger lesion size, stronger sporulation capacity, andmore aggressive fitness than those from tomato,which indicating host specificity of Chinese isolates of Phytophthora inf estans.

Key words: Phytophthora inf estans, Epidemiology, Aggressive fitness, Pathogenicity

CLC Number:

LIU Rui, YANG Zhi-hui, ZHU Jie-hua, YANG Yu-rong. Aggressive Fitness and Host Specificity of Chinese Isolates of Phytophthora infestans[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(S2): 220-223. doi: 10.7668/hbnxb.2008.S2.051.

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