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 |
The present investigation was conducted to evaluate the various parameters of genetic variability and nature of associations among traits affecting grain yield in 50 inbred lines of maize (Zea mays L.) at Command Area Development Authority Experimental Block, Agricultural Research Station, Bheemarayanagudi (Karnataka) during Rabi 2018. The analysis of variance revealed that highly significant differences exist among the inbred lines for all the characters except for anthesis silking interval. High heritability coupled with high genetic advance (% of mean) was observed in number of grains per row, number of grains per cob, plant height, grain yield per plant, 1000 kernel weight and grain yield (kg/ha), indicating the influence of additive gene action in controlling the traits. The important yield attributing traits viz., shelling percentage, number of grains per row and plant height showed positive association at both phenotypic and genotypic levels. At phenotypic level, the character number of grains per cob recorded highest positive direct effect on grain yield followed by shelling percentage, days to 50% anthesis and plant height. At genotypic level, the characters viz., days to 50% anthesis, number of grains per cob, shelling percentage exhibited high direct positive effect on grain yield.
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