Characterization of South Indian Paddy Varieties Under Commercial Cultivation Through Morphological and Molecular Markers
Journal Title: International Journal of Agricultural Science and Research (IJASR) - Year 2017, Vol 7, Issue 4
Abstract
Rice varieties under commercial cultivation of Tamil Nadu, were characterized morphologically and also using SSR markers, selected from 12 linkage groups of the rice genome. In case of morphological characters, the level of discrimination was high in quantitative grain characters compared to qualitative characters. Cluster analysis based on morphological characters, grouped the varieties of medium and long, slender grain type in one cluster and short bold grain type into another cluster at about 65% similarity level. In SSR characterization polymorphism information content (PIC) of the markers varied from 0.142 to 0.792, with an average of 0.453. The cluster analysis of SSR markers grouped the varieties into four major clusters at a similar level of 35%. The clustering, pattern showed some relationship with the pedigree of the thirteen rice varieties. The results revealed that the SSR markers are highly efficient in generation of unique DNA profiles of paddy varieties, which could be effectively utilized in assessing the seed genetic purity.
Authors and Affiliations
R. Vigneshwari, A. Vijayakumar, M. Raveendran
Keywords
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