Phenotyping of agronomic and grain quality traits of recombinant inbred lines (RIL) derived from the cross CSR 10 x HBC 19

A F7 and F8 population compromising of 231 recombinant inbred lines derived from the cross between CSR10 (salt tolerant indica) x HBC19 (Taraori Basmati) using single seed descent method, was evaluated for variation in agronomic and grain quality traits. Both generations showed significant variation among 231 lines for all the characters including plant height, productive tillers per plant, grain yield per plant, 1000 grain weight, hulling percentage, raw grain dimensions, cooked grain dimensions, elongation ratio, length breadth ratio, aroma, alkali value and amylose content. Heritability (broad sense) estimates were high for all the traits except thickness of raw grains. Phenotypic coefficient of variation (PCV) was higher than genotypic coefficient of variation (GCV) for all the metric traits indicating less of environmental impact. Correlation studies of yield components and various physicochemical traits in 231 RILs revealed correlation among all the metric traits. Transgressive segregation was also observed for almost all the traits in both the generations.