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 |
In order to analyze combining ability for yield and some of its associated characters in late sown condition in bread wheat (Triticum aestivum L.em. Thell), the present experiment was carried out performing diallel analysis following Griffing (1956) Method II Model I. Ten genetically diverse parents were selected and crossed in half diallel fashion excluding reciprocals. These parents were evaluated along with their 45 F1’s and 45 F2’s in a randomized block design with 3 replications. Significant differences were observed among the parents, generations, F1, F2 and parents v/s generations for all the characters except for number of tillers per plant among the parents and grain filling period for parents v/s generations. Significant mean squares due to GCA and SCA for all the characters except GCA for number of tillers per plant in F1 and SCA for number of tillers per plant in F1 indicating that both additive and non-additive gene effects played an important role in the genetic control of the traits studied. The GCA / SCA variance ratio was less than unity indicated the importance of non-additive gene action for all the characters under investigation. Based on an overall evaluation of GCA effects and per se performance, the parent parents Raj 3765, Raj 4083 and Raj 4079 emerged as good general combiners while the crosses Raj 4238 X Raj 4238 and Raj 4120 X DBW 17 emerged as good specific cross combinations for grain yield and some other attributes.. As a consequence of predominant non-additive gene action in the present study, breeding approaches such as reciprocal recurrent selection, diallel selective mating, bi-parental mating and multiple cross would be useful breeding approaches for developing new genotypes from potent breeding material identified.
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