National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
General and specific combining ability effects along with the magnitude of heterosis of the inbred lines and hybrids of the maize were estimated using diallel mating design during 2019-20 cropping season at Research-cum-Instructional farm, Ajirma, RMD CARS, Ambikapur with Randomized Complete Block Design (RCBD). The analysis of variance revealed that the sufficient variability was present in the material studied. A comparatively higher estimate of GCV was obtained for traits viz., grain yield qha-1, cob weight in g plot-1. High heritability coupled with high genetic advance for the traits like grain yield qha-1, cob weight (g plot-1), ear height (cm), plant height (cm) and 100 grain weight (g) were recorded. Mean sum of squares was highly significant for all the traits studied except anthesis silking interval. The mean sum of squares due to inbreds, hybrids and inbred x hybrids were significant for all the characters. This implies both the additive and non-additive gene actions were playing significant role in the expression of these characters. Variance due to sca was greater than gca variance for almost all the traits except for number of kernel rows cob-1, days to 50% tasseling and days to 50% silking. Results of combining ability revealed that the parental lines VL18941, VL18579, KL156018, VL171511, VL175894 and VL172428 are identified as good general combiners for grain yield and other important traits under study. The hybrids VL18579 x VL18452, VL175894 x VL18941, VL171511 x VL172428, VL171511 x VL18579 and VL18932 x VL18579 were found to be as desirable specific combiners for grain yield and other related important traits and showed significant standard heterosis for grain yield over checks.
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