PJB-2018-385
HETEROTIC EFFECTS FOR YIELD RELATED ATTRIBUTES IN F1 POPULATIONS OF MAIZE
SARDAR ALI
Abstract
Five white kernel maize inbred lines were crossed in a complete diallel fashion during spring at Cereal Crops Research Institute (CCRI), Pirsabak - Nowshera, Khyber Pakhtunkhwa, Pakistan. The resulting 20 F1 hybrids, five parental inbred lines and two checks (OPV 'Jalal' and 'Pioneer hybrid 30k08') were evaluated through field experiments at four different locations i.e., Cereal Crops Research Institute (CCRI), Nowshera, University of Haripur, Haripur, Agriculture Research Station (ARS), Baffa - Mansehra, and Agriculture Research Institute, Mingora - Swat, Khyber Pakhtunkhwa, Pakistan. All the experiments were laid out in a randomized complete block design (RCBD) with three replications with the objective to identify the suitable hybrid combinations on the basis of their genetic potential for commercial cultivation in Khyber Pakhtunkhwa. A Large number of F1 hybrids revealed significant positive heterotic effects for grain yield and most of the yield contributing traits at Swat, followed by Baffa, Mansehra, Haripur and CCRI, Nowshera. Majority of the F1 hybrids revealed significantly positive mid and better parent heterotic effects for ear length, grain rows per ear, 1000-grain weight and grain yield at all the locations. For grain yield, F1 hybrids PSEV3 × FRHW-1 and PSEV3 × FRHW-2 at CCRI, FRHW-2 × FRHW-1 and SWAJK-1 × FRHW-1 at Haripur, FRHW-1 × SWAJK-1 at Mansehra and FRHW-2 × FRHW-3 and FRHW-1 × SWAJK-1 Mingora, Swat showed desirable and significant positive mid and better parents, economic and commercial heterosis. Therefore, these hybrids could be blindly recommended for cultivation in the tested locations and to use in the future breeding program for developing high yielding maize genotypes.
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