Correlation Studies for Yield and Yield Contributing Characters in Sweetcorn (Zea mays L. saccharata)

The present investigation has been undertaken in sweet corn to carry out the correlation studies of yield and yield contributing characters. Eight divergent parents were selected and crossed in diallel fashion excluding reciprocals during kharif, 2010. The resulting 28 crosses along with parents were evaluated in Randomized Block Design replicated thrice, during rabi, 2010-11 at Agricultural Research Institute, Rajendranagar, Hyderabad. The data were collected on days to 50% tasseling, days to 50% silking, days to maturity, plant height, ear height, ear length, ear girth, number of kernel rows per ear, number of kernels per row, green fodder yield, green cob yield, 100 kernel (dry) weight and association of these characters to the seed yield (wet) per plant.. Phenotypic and genotypic correlations were worked out on yield and yield contributing characters in 28 crosses and 8 parents. In general, genotypic correlations were found to be higher than phenotypic correlations. Results revealed that there was a positive association of seed yield (wet) per plant with plant height, ear height, ear length, ear girth, number of kernel rows per cob, number of kernels per row, green cob yield, 100 seed (dry) weight and with green fodder yield