Study of relationship between SSR markers of QTL region controlling drought tolerance and some of the phenotypic traits on chromosome 2 of rice

To consider the relationship between allelic diversity of sixteen microsatellite markers of major QTL controlling drought tolerance on chromosome number 2 of rice and some of phenotypic traits in some types of Iranian and experimental imported rice was performed in two molecular and phenotypic parts in Plant breeding laboratory of Gonbad-e-Kavoos university at 2012. Studied characteristics included the root dimension, root weight, root amounts, stem weight, stem length, root length, genotypic code and biomass. Variance analysis of studied characteristics indicated that there is a very significant difference between genotypes of studied characteristics under the drought conditions. In this study 49 allele was observed that the most amount of allele is related to RM3302 marker with 6 alleles and the most gene variety and the highest PIC were related to RM8030. Stepwise regression analysis was used for relationship between phenotypic traits as dependent variable and alleles as independent variable and showed that 17 alleles have significant association with at least one of the eight phenotypic traits under drought condition that can be profit in breeding with marker assisted selection and produce tolerant variety in the seedling stage in drought stress.