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 combining ability for yield and spot blotch disease resistance was studied in 21 cross combinations generated by crossing the selected spot blotch resistant and susceptible parents in 7 x 7 half half diallel design. Analysis of variance for combining ability indicated that SCA variance was higher than GCA variance for all the traits under study. The GCA component was significant for all the traits studied except for the trait thousand grain weight. The SCA component was significant for all the traits except for number of productive tillers per plant and thousand grain weight. The magnitude of sca variance was greater than gca variance for all the traits. The magnitude and direction of gca effects indicated HI 8663 and UAS 428 as good general combiners for yield and disease resistance. The cross combinations UAS 428 x A-9-30-1 and HI 8663 x DDK 1001 were identified as superior specific combiners for yield while, UAS 428 x DDK 1001, UAS 428 x A-9-30-1 and HI 8663 x NP 200 were found to be superior for disease resistance.
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