【摘 要】
：
Genetic diversity of sunflower Sclerotinia sclerotiorum isolates from the same field of Wenquan, Xinjiang was invested through mycelial compatibility groups (MCGs).Total 98 S.sclerotiorum isolates wer
【机 构】
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Agronomy Department of Inner Mongolia Agricultural University, Saihan District,Hohhot, Inner Mongoli
【出 处】
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中国植物病理学会2014年学术年会
论文部分内容阅读
Genetic diversity of sunflower Sclerotinia sclerotiorum isolates from the same field of Wenquan, Xinjiang was invested through mycelial compatibility groups (MCGs).Total 98 S.sclerotiorum isolates were classified into 15 MCGS, the biggest MCG contains 34 samples;6 independent MCGs were formed only by single isolate, indicating the genetic variation among all the tested samples.The variation of OA level, PG activity, sclerotia number, growth rate, pathogenicity, fungicide sensitivity and also colonial color among isolates within the same MCGs and between different MCGs indicated the genetic variation of tested samples in this study.Mating type idiomorphs were detected with specific primers via PCR in MCG1 and MCG2.The 1 ∶ 1 ratio of inversion-minus isolates and inversion-plus isolates was observed in MCG1, however, in MCG2, the ratio was 1 ∶ 13.The dramatically variable of pathogenicity of all tested isolates reflected the genetic variation of S.sclerotiorum samples within the same field.
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