Received: 15-08-2014
Accepted: 22-01-2015
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Assessing Genetic Diversity Tomato and Yellow Leaf Curl Virus (TYLCV) Resistance Gene ofTomato Varieties by DNAMarkers
Abstract
Tomato is apopularly important vegetable in the world and Vietnam. Assessing genetic diversity and detcetion of genes for disease resistance of the existing germplasm of tomato are usefull for development ofnew varieties with high yield, good qualityand disease resistance. In this study,10 SSR markersand four markers related to TYLCV resistance genes (Ty1, Ty2and Ty3) were usedto analyse genetic diversityand identify the TYLCV genes, respectively, of26 of tomatoes accessions available at food crops research institute. The results showed, that only 5 marker showedpolymorphism.26 accessions were grouped into 5 clusters with similarity coefficients threshold of 0.7 by using NTSYSpc 2.1 software. The information found in this study is very important fornew tomato hybrid breeding programs.Only four of 26 accessions carriedTy1andthe genesTy2 and Ty3 were not detected
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