Journal of Biotechnology & Biomaterials
Open Access

Abstract

Wild rice are distinct with elite cultivated rice varieties as they are survived for thousands of years in the nature and are adapted to extreme habitat. Hence, they are expected to harbor genes for resistance to various kinds of biotic and abiotic stresses and provide tremendous potential for global food security. Knowledge on diversity and population structure is expected to help plant breeders in the selection of parents for crossing, providing a more rational basis for expanding the gene pool and for identifying materials that harbor alleles of value for crop improvement. To overcome these challenges functional genomics tools particularly SNP marker can play a significant role in very less time frame. Here, we report haplotype based phylogenetic analysis of Indian wild rice germplasm using single-copy gene based 50K genotyping chip. Phylogenetic analysis unravels the origin of mutations and provides clues to the evolution of genetic diversity in populations. The single-copy gene based 50K rice SNP chip was used to study the genetic diversity and phylogenetic relationship among 192 diverse rice germplasm including wild rice accessions, traditional rice varieties and genetically improved rice cultivars. Genotypes were separated into four major groups. Group-1 comprised entirely of wild rice accessions including both O. rufipogon and O. nivara. Group-2 comprised wild rice accessions along with landraces, including well-known Aus varieties, Group-3 comprised mainly of wellknown indica rice varieties. Group-4 was of japonica rice cultivars. Several wild rice accessions showing proximity with the Aus group of cultivated rice which may have been domesticated from this wild rice group. Wild rice could play a major role in future breeding programs that would improve biotic and abiotic tolerance capacity and enhance the food security to meet the projected demands of global population.

Biography

Email: singh.nisha88@gmail.com