Studies on Heterosis, Residual Heterosis and Inbreeding Depression for Yield and Related Traits in Sorghum (Sorghum bicolor L.)

Background: Selection of genotypically superior parents is most challenging task for the development potential hybrids. In conventional plant breeding, magnitude heterosis and inbreeding depression has been proved very effective in identifying vigorous parental combinations. Methods: The present investigation was carried out to study heterosis, residual forty sorghum crosses (F1s F2s) obtained by crossing eight restorer lines with five cytoplasmic male sterile Line x Tester mating design 2013 2014. Observations were recorded on morphological traits viz. days 50% flowering, maturity, height, flag leaf length, width, panicle weight,1000 seed weight grain yield per plant. Result: Among all crosses, ICSA467 UPC2 MR750A2 found be best characters. Inbreeding as significantly positive height indicates occurrence transgressive segregants F2 generation.