Heterosis and heterobeltiosis for grain yield improvement in bread wheat
2010
Akbar, M. (Wheat Research Inst., AARI, Faisalabad (Pakistan)) | Anwar, J. (Wheat Research Inst., AARI, Faisalabad (Pakistan)) | Hussain, M. (Wheat Research Inst., AARI, Faisalabad (Pakistan)) | Iqbal, M.M. (Wheat Research Inst., AARI, Faisalabad (Pakistan)) | Sabir, W.
A study was conducted at Wheat Research Institute, AARI, Faisalabad, Pakistan during 2006-08 to estimate the level of heterosis and heterobeltiosis among F1 hybrids developed from four lines and three testers in bread wheat. Genotypic mean squares for all traits studied were highly significant genetic depicting significant variability for these traits. Heterosis and heterobeltiosis were estimated for grain yield per plant, number of tillers per plant, spike length, number of spikelets per spike, 1000-grain weight and plant height in cross combinations of four lines (HI666/PVN'S', HUBARA'S', Faisalabad 85 and Faisalabad 83) and three testers (PBW65/ROER/3/PB6//MIRLOW/BUC, Faisalabad 2008 and PBW502) of bread wheat. The results exhibited significant differences among genotypes and their crosses for all traits studied. The cross "Faisalabad 83 x PBW65/ ROER/3/PB6//MIRLOW/BUC depicted significant and maximum heterosis and heterobeltiosis for grain yield and most of the other tra
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