Genetic Studies on Morphophysiological Traits With Elite Inbreds of Maize

摘要

A 6 X 6 diallel analysis, generation mean analysis, path analysis and correlation analysis were carried out in maize with elite inbred lines in Delhi and Dharwad during 2010 and 2011. The results revealed that for most of the characters, magnitude ofadditive variance was more than that of dominance variance in both the locations. This was also reflected in degree of dominance being far below 1.0. However, for grain yield, dominance component was more important. Further, for most of the characters, additive variance was higher in rabi season compared to kharif. As such these finding are also reflected in higher heritabilities of these traits in rabi. The characters that had higher heritabilities (narrow sense) were 50% silking and ASl. The highest negative midparent (MPH) and better parent heterosis (BPH) were observed for ASl. This was more negative in rabi (> - 29.0 %). Highest positive heterosis was observed for grain yield in all three seasons.