Characterization and correlation analysis for yield and yield contributing traits in medium duration germplasm accessions of rice (Oryza sativa L.)

Undomesticated crops species acquire huge possible and most precious gene which can be successfully utilized in crop improvement to develop high yielding rice varieties. The two hundred fifty eight rice germplasm accessions were used in present study. Simple statistics (means, ranges, standard deviation and coefficient of variation) was measured to have a reflection of the level of genetic variability. Frequency distributions of qualitative traits were short out the genotypes into diverse classes. In quantitative traits, days to 50% flowering and days to maturity readily exist C.V. value not much than 10%. On the other hand, most of the characters cover high C.V. values over 10% and prominent to 28.56% for leaf length. Leaf length (r=0.238 at p<0.05) and effective tiller (r=0.375 p<0.05, 0.01) shows significant positive correlation with grain yield. As tillering in rice is a important determinant for panicle production and as a result, it affects total yield. In view of all desirable traits four rice germplasm i.e. IC 377061IC 300784, IC 376585, and. IC 145381, accessions were identified.