Line × Tester Analysis in Rice Genotypes under Salinity Stress Conditions

Abstract

A major challenge to economies reliant on agriculture is salinity, which especially affects rice, which is a staple diet for half of the world's population. Nine parental genotypes and the 18 F1 hybrids that resulted from crossing six female (line) genotypes with three male (tester) genotypes were examined in a Line × Tester study. Plant height, panicle length, tillers per plant, grains per panicle, main panicle weight, 1000 grain weight, and yield per plant were the nine features that were evaluated. Bas-2000 and Bas-198, who excelled in a variety of qualities, were shown to be the greatest performers under typical situations by General Combining Ability analysis. In terms of panicle length, grain weight main panicle, and yields per plant, Super-Basmati performed the worst. Bas-198 proved to be the best line under salinity, and Ks-282 was the best tester. Super Basmati × Bas-Pak was found to be the best cross for tillers per plant and yield per plant under normal conditions by Specific Combining Ability analysis, but Shaheen-Basmati × Bas-Pak fared better under salinity stress. On the other hand, under normal circumstances, Shaheen-Basmati × Ks-282 performed the worst in most features, however under salinity stress, 5170 × Ks-282 performed the worst.