Abstract

To estimate breeding value, correlation and heritability in rice, two parental lines of rice, Mushk Budji and DHMAS 70Q 164-1b were crossed to generate F1 plant that was subsequently backcrossed to raise 29 BC1F1 plants. The best performing single BC1F1 plant was selected and selfed to raise BC1F2 population. The selected 14 BC1F2 plants were advanced to raise 104 BC1F2: 3 individuals. The observations were recorded on parents, BC1F1, BC1F2, BC1F2: 3 individuals for 13 agronomic and quality traits. The line SKUA-485 27–47 recorded high breeding values for all the traits. This line is expected to yield progenies having high grain yield and contributing traits. The parent offspring regression (rOP) is a direct measure of heritability in broad sense and was worked out using BC1F2 and BC1F2: 3 progenies and PH recorded high positive b-value of 0.75. The grain shape as measured by kernel length: breadth ratio showed high h2 (0.58). The highest correlation was recorded between traits grain yield and effective tillers per plant (r=0.760). Milled rice length recorded significant positive correlation with kernel length: breadth ratio and kernel length after cooking, while it showed negative but significant correlation with elongation ratio. Backcross generations particularly from genotype SKUA-485-27-47 were expected to recover progenies with more number of effective tillers per plant, high grain yield and short bold grain type.