文献类型： 外文期刊
作者： Wang, Meng 1 ; Wang, Shaoqing 1 ; Ma, Jia 3 ; Yu, Chuanjin 1 ; Gao, Jinxin 1 ; Chen, Jie 1 ;
作者机构： 1.Shanghai Jiao Tong Univ, Sch Agr & Biol, Shanghai, Peoples R China
2.Shanghai Jiao Tong Univ, Minist Agr, Lab Southern Urban Agr, State Key Lab Microbial Metab, Shanghai, Peoples R China
3.Hebei Acad Agr & Forestry Sci, Inst Coastal Agr, Tangshan, Peoples R China
关键词： AFLP;Cochliobolus heterostrophus;IOD;races
期刊名称：JOURNAL OF PHYTOPATHOLOGY （ 影响因子：1.789； 五年影响因子：1.574 ）
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收录情况： SCI
摘要： Cochliobolus heterostrophus is the causal pathogen of the southern corn leaf blight (SCLB). There are three known races: race O, race C and race T. To determine which C.heterostrophus races comprise the field population in southern China and to assess diversity of these strains in terms of virulence, 200 isolates from diseased plants were collected in nine provinces/municipalities. All were race O, that is, no race T or race C isolates were found. Sixty race O isolates that sporulated well were chosen for further analysis. Virulence was measured using the integral optical density (IOD) of leaf lesions on four maize inbred lines. UPGMA cluster analysis of AFLP markers was applied to the 60 race O isolates plus control race O, T and C strains. Phylogenetic distribution, geographic location and virulence were not correlated. These results can provide valuable information for guidance in early warning and disease control.
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