辣椒上CMV株系鉴别寄主的筛选与应用

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。

Screening and Application of Differential Hosts to Cucumber Mosaic Virus Strains on Pepper

According to Flor's "Gene to Gene" theory and Omaro and Tomaru's method to distinguish CMV strains, we studied "strains of gene type" and "strains of pathogenetic type" 5 varities were selected as differential variety spectrum from 373 sweet or hot pepper, They were numbered LS-8501 (HR), LS-8502(R), LS-8503(T), LS-8504(S) and LS-8505(HS). 59 CMV isolates were divided into 5 strains by the spectrum, They were divided into 5 strains by the spectrum and named CMV-P0, CMV-P1, CMV-P2, CMV-P3, and CMV-P4. 7 hosts were selected as differential host spectrum from 39 species in 7 families of plants. 59 CMV isolates were divided into 5 strain groups by the spectrum, i.e. Cruciferae strain group, Chenopodium strain group, Solanaceae and Cucurbitaceae strain group, Leguminosae strain group and general yellow mosaic strain group, The relationship between pathogenetic type of strain and phenotype of pepper in two distinctive methods were compared, The interaction among three dominant strains was described. The academic and practical value of new differential spectrum and new method to distinguish CMV strains were also discussed. The correlativity of five strains with international CMV strains was compared.