Selection indices for yield in rabi sorghum (Sorghum bicolor L. Moench) genotypes

Various selection indices were constructed for yield in rabi sorghum genotypes using 45 genotypes. Among various traits, plant height, 1000-seed weight and fodder yield had significant and positive genotypic correlation with the seed yield per plant. Among the selection indices, the expected genetic gain and relative efficiency had higher side whenever correlated traits are present together. Further increase in the genetic gain and efficiency with the addition of more traits are negligible. Hence the selection index based on seed yield, plant height, 1000-seed weight and fodder yield may be considered as appropriate selection index for seed yield improvement in rabi sorghum genotypes.