A Preliminary Investigation on Phenotypic Characteristics of Phytophthora infestans from Guizhou Province  

作　　者：Lu HUANG Xiaojun CHEN Haiyong HE Xuehui LIU Shiping WU 

机构地区：[1]Institute of Plant Protection,Guizhou Academy of Agricultural Sciences,Guiyang 550006,China

出　　处：《Agricultural Biotechnology》2016年第3期29-32,共4页农业生物技术（英文版）

基　　金：Supported by Agricultural Science and Technology Project of Guizhou Province in 2011([2011]3022)

摘　　要：Abstract [ Objective ] This study aimed to investigate the phenotypic characteristics of Phytophthora infestans from Guizhou Province. The metalaxyl resistance, mating type and isozyme genotype of 292 P. infestans strains isolated from Guizhou Province were analyzed. [ Result] Metalaxyl-resistant P. infestans strains were found in different areas of Guizhou Province. Resistant, moderately resistant and susceptible strains accounted for 35.62% , 33.90% and 30.48% , re- spectively. Both mating types A1 and A2 were found, which accounted for 65.38% and 34.62%, respectively. P. infestans strains isolated from Guizhou Province mainly belonged to Gpi genotypes 100/100 and 100/100/111, accounting for 50.68% and 43.84%, respectively. [ Conclusion] This study provides the theoretical basis for the prevention and control of potato late blight in Guizhou Province.Abstract [ Objective ] This study aimed to investigate the phenotypic characteristics of Phytophthora infestans from Guizhou Province. The metalaxyl resistance, mating type and isozyme genotype of 292 P. infestans strains isolated from Guizhou Province were analyzed. [ Result] Metalaxyl-resistant P. infestans strains were found in different areas of Guizhou Province. Resistant, moderately resistant and susceptible strains accounted for 35.62% , 33.90% and 30.48% , re- spectively. Both mating types A1 and A2 were found, which accounted for 65.38% and 34.62%, respectively. P. infestans strains isolated from Guizhou Province mainly belonged to Gpi genotypes 100/100 and 100/100/111, accounting for 50.68% and 43.84%, respectively. [ Conclusion] This study provides the theoretical basis for the prevention and control of potato late blight in Guizhou Province.

关 键 词：Phytophthora infestans Mating type METALAXYL GPI 

分 类 号：S435.32[农业科学—农业昆虫与害虫防治] S888.7[农业科学—植物保护]