comparative analysis of variability and correlations between quality components in traditional rainfed upland and lowland rice

Analysis of the variability and correlations in gora (Group I) and mediwn/lowland (Group II) rices revealed similar variability patterns in both the groups. However, the correlations were variable in both groups. A consistent trend of associations for hulling, milling, head-rice recovery, kernel size and shape were observed in both the groups. Alkali value and amylose content exhibited differential pattern of association with grain size,shape and milling characteristics. The cooking quality attributes showed highly variable associations with physico-chemical properties of the rice grain. Nevertheless, the relationships between water uptake and amylose content, cooked kernel length and kernel elongation, and kernel size and shape were observed in both the groups. Study indicated to use different selection criteria for combining cooking quality attributes with physico-chemical characteristics under upland and lowland situations.