Journal ID : AMA-22-05-2022-11397
[This article belongs to Volume - 53, Issue - 06]
Total View : 428

Title : Study of combining ability and heterosis for grain yield and its attributing characters in F1 generation of bread wheat (Triticum aestivum L.)

Abstract :

The present investigation comprised of 28 F1s developed by crossing 8 lines viz., K - 9107, HD – 2733, HD – 2888, WH – 1218, K – 1313, DBW – 187, HD – 3086, and DBW – 107 following half diallel mating design. The 36 genotype (28 F1s + 8 Parents) were sown in Randomized Block Design with three replications in timely sown (TS) condition. On the basis of per se performance and GCA effects good general combiners were DBW – 107, K- 9107 and K- 1313 for days to 75% heading , HD – 2733 and K- 1313 for plant height, DBW – 107, K- 1313 and DBW - 187 for days to maturity, HD – 3086 and HD – 2733 for number of tillers per plant, HD – 2733 and HD – 2888 for number of spikelet’s per ear, K- 9107, DBW – 187 and DBW - 107 for ear length, K- 9107, HD – 2733 and HD – 2888 for number of grain per ear, WH – 1218, DBW – 187 and HD - 3086 for 1000 grain weight, DBW – 187 and HD – 3086 for grain yield per plant. Good common cross combiners on the basis of SCA effects and per se performance were HD - 2888 / K – 1313 for plant height, K - 9107 / HD – 3086 and HD - 3086 / DBW – 107 for number of tillers per plant, WH - 1218 / DBW – 187 and WH - 1218 / DBW – 107 for ear length, HD - 2733 / K – 1313 for 1000 grain weight, K - 9107 / WH – 1218 and HD - 2733 / HD – 3086 for weight of grain per ear, HD - 2733 / DBW – 187 and DBW - 187 / DBW – 107 for grain yield per plant. In the present study, fifteen crosses showed highly significant and negative economic heterosis in desirable direction was observed in K - 9107 / K- 1313, K - 9107 / DBW – 187 and K - 9107 / HD – 3086 for days to heading. Four crosses showed the significant and negative heterosis as HD - 2733 / K – 1313, HD - 2733 / DBW – 187 and K - 1 313 / DBW – 107 for plant height. Three cross showed significant and positive heterosis as K - 9107 / HD – 3086 and HD - 3086 / DBW - 107 for more number of tillers per plant. One cross showed significant and positive heterosis K - 9107 / K- 1313 for number of spikelet’s per ear. Three cross showed significant and positive heterosis for ear length as K - 9107 / HD – 3086 and K - 9107 / DBW - 107. Four crosses showed significant and positive heterosis as HD - 2888 / HD – 3086 and K - 9107 / WH – 1218 for number of grain per ear. None crosses showed significant and positive heterosis for 1000 grain weight. Two crosses showed highly significant and positive heterosis as HD - 2733 / DBW – 187 and DBW - 187 / DBW – 107 for grain yield per plant.

Full article