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根据“基因对基因”理论和日本小室与都凡按寄主的科属关系及被害症状划分株系的方法,研究了辣椒CMV的“基因型株系”和“致病型株系”。从373个甜、辣椒品种(系)中,筛选出一套抗性不同的差别品种,编号为:LS-8501(HR)、LS-8502(R)、LS-8503(T)、LS-8504(S)、LS-8505(HS)。用这套差别品种做“基因型”株系鉴别寄主,将59个CMV分离物划分为5个株系,命名为:CMV-P0,CMV-P1,CMV-P2,CMV-P3,CMV-P4。又从7科39种不同科属寄主值物中,筛选出一套“致病型”株系的鉴别寄主谱7种,用这套鉴别寄主将59个CMV分离物划分为5个株系群,即十字花科株系群,藜科株系群,茄科、葫芦科株系群,豆科株系群,普通黄色花叶株系群。文中比较了两种方法划分的株系致病性与辣椒病症表现型之间的关系,以及各株系的分布。还讨论了“基因型”鉴别寄主谱及“基因型”株系划分方法盼学术价值和实用性,比较了5个株系与国内外已分化的CMV株系的异同点。
According to the theory of “gene pair gene” and the methods of dividing the strains of Viciaceae and allopharyngeal families according to their host families and the victimization symptoms, the “genotype” and “the pathogenic strains” of pepper CMV were studied. A total of 373 sweet and pepper varieties (lines) were screened for a variety of different varieties with different resistances, including LS-8501 (HR), LS-8502 (R), LS-8503 (S), LS-8505 (HS). The CMV-P0, CMV-P1, CMV-P2, CMV-P3, CMV-P3 and CMV-P4 were divided into 5 lines by using this differential genotype as the “genotype” . In addition, seven host strains of “pathogenic” lines were screened out from the host value of 39 families of 7 families. 59 CMV isolates were divided into 5 groups , Namely Cruciferae, Chenopodiaceae, Solanaceae, Cucurbitaceae, Leguminosae and Ordinary yellow mosaic. In this paper, we compared the relationship between the pathogenicity of the two strains and the phenotypes of pepper diseases, and the distribution of each strain. Also discusses the “genotype” to identify the host spectrum and the “genotype” line division method hope of academic value and practicality, compared five lines with domestic and foreign differentiated CMV strains similarities and differences.