COMPONENTS OF RESISTANCE TO CERCOSPORA-ARACHIDICOLA AND CERCOSPORIDIUM-PERSONATUM IN GROUNDNUTS

被引:30
作者
NEVILL, DJ [1 ]
机构
[1] INT CROPS RES INST SEMI ARID TROP, PROGRAMME GROUNDNUT IMPROVEMENT, PATANCHERU 502324, ANDHRA PRADESH, INDIA
关键词
D O I
10.1111/j.1744-7348.1981.tb05132.x
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
The reactions of 4 groundnut cultivars to inoculation with 2 leaf spot pathogens (C. arachidicola and C. personatum) were investigated. Resistant cultivars showed longer latent periods, reduced sporulation and less defoliation; however, none of the cultivars was resistant to both pathogens. Numbers of lesions, time to leaflet loss and the percentage of spores which produced lesions were influenced by the concentration of C. personatum inoculum applied to the leaves and there were significant cultivar differences in lesion numbers at the lowest inoculum level. Only the first 2 characters were affected by applied spore concentration in the study with C. arachidicola. Generally it was found that lower inoculum levels gave a better separation of cultivars.
引用
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页码:77 / 86
页数:10
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