Identification of resistance in mungbean cultivars against viral disease complex by use of cluster analysis
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Authors
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O.P. SHARMA, PRAVEEN ARORA AND A.K. RAHEJA
National Center for Integrated Pest Management, 646, Sector 21-A, Badkhal Road, Faridabad 121 001
Keywords:
Cluster analysis, resistance, virus diseasesAbstract
Genetic similarity and/or dissimilarity among genotypes, phenotypes of phytopathogenic organisms and gene-for-gene relationship can be exactly expressed by cluster analysis. The application of a definite hierarchical agglomerative clustering based on N connected clusters as a mean for describing genetic structure of mungbean (Vigna radiata) responsible for resistance and susceptibility towards bean common mosaic virus and crinkle virus diseases is discussed. A correlative structure was observed among both diseases and the dendrogram using cluster procedure was used to visualize the inter-relationship of the multiple disease complex with stable host gene for resistance. These information will greatly assist the planning of subsequent control strategies involving breeding for resistance.
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