Vol. 16 No. 3
Heterosis for yield and its contributing traits in wheat
Author(s): A. JOSHI AND A. KUMAR
Abstract: The present investigation was conducted to estimate heterotic effects for twelve yield and its associated traits in F1 hybrids of ten bread wheat genotypes crossed in half diallel fashion. The experiment was conducted in a randomized complete block design with three replications at G.B. Pant University of Agriculture and technology during Rabi season, 2016-17. Results revealed that based on superior per se performance and high relative heterosis, heterobeltiosis and standard heterosis cross PBW 729 x WH 1187 was found superior for days to 75% heading, PBW 729 x DBW 50 for days to maturity, Raj 4419 x QLD 39 for flag leaf area, PBW 729 x NIAW 1594 for number of productive tillers/plant, HD 2967 x DBW 50 for Plant height, KFA/2*KACHU x PBW 729 for Spike length, Raj 4419 x HD 2967 for number of spikelets/spike, PBW 729 x HD 2967 for number of grains/spike, UP 2762 x Raj 4419 for thousand grain weight, KFA/2*KACHU x PBW 729 for biological yield plant-1, KFA/2*KACHU x NIAW 1594 for grain yield plant-1 and KAUZ/ALTAR84/3/MILAN/KAUZ/4/HUITES x DBW 50 for harvest index. Cross KFA/2*KACHU x PBW 729 was found superior for two traits viz., biological yield plant-1 and spike length. Therefore, these superior cross combinations can be further utilized to produce wheat hybrids with improved yield contributing traits and hence superior yield.
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