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 |
Tools for yield prediction are requisite to any successful heterosis breeding program. In this study, heterosis was evaluated in 10 × 10 half diallel along with 3 checks in RBD with 3 replications in maize for grain yield and architectural traits viz., ear length, number of grain rows per ear, 100-grain weight, grain yield per plant and harvest index etc. Significant positive mid-parent heterosis ranged from 11.11 to 27.66 per cent, 13.51 to 17.95 per cent, 7.07 to 47.66 per cent, 23.93 to 82.39 per cent and 8.84 to 25.18 per cent for ear length, number of grain rows per ear, 100-grain weight, grain yield per plant and harvest index and respectively. Out of forty five hybrids, two hybrids for ear length, one hybrid for number of grain rows per ear show positive significant better-parent heterosis. In case of grain yield per plant positive significant better-parent heterosis was exhibited by eleven hybrids with maximum magnitude of this heterosis depicted by the hybrid P1 x P2 (66.03%). Hybrid P8 x P9 (42.88 %) exhibited maximum positive significant better-parent heterosis and hybrid P4 x P10 (11.94 %) exhibited maximum positive significant economic heterosis for 100-grain weight. For harvest index, hybrid P1 x P2 (18.57%) exhibited maximum positive significant better-parent heterosis and hybrid P6 x P7 (14.63 %) obtained maximum positive significant economic heterosis. This hybrid also shows highest magnitude of positive significant economic heterosis for grain yield per plant (41.67%).
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