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 |
Combining ability analysis for grain yield and its components, and nature of gene action in bread wheat were investigated using twelve lines and three testers, and thus 36 crosses produced in line x tester mating design which were evaluated in randomized block design with three replications. Study on gene action revealed the preponderance of additive gene action for plant height, peduncle length and number of spikelets per spike. On the basis of GCA effects, the parents DBW 88, WH 1126, UP 2425, UP 2696 and UP 2845 were identified as good general combiners revealing their ability in transmitting additive genes in desirable direction to their progenies. Hybrid WH 1139 × HD 3059 was found to be the best specific cross combination for grain yield and biological yield. However, the best specific cross combinations for other contributing traits were UP 2554 × HD 3059 for days to 75% heading and days to maturity, DBW 88 × WH 1105 for number of tillers per plant, DBW 88 × HD 3059 for plant height, HD 3123 × WH 1105 for number of grains per spike, UP 2554 × UP 2572 for grain weight per spike, UP 2554 × WH 1105 for 1000 grain weight and WH 1139 × UP 2672 for harvest index.
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