Abd El-Maksoud, M., Kosba, Z., Koumber, R., Gebrel, E. (2010). GENETICAL STUDIES ON SOME ECONOMICAL TRAITS IN BREAD WHEAT (Triticum aestivum L.). Journal of Agricultural Chemistry and Biotechnology, 1(7), 365-381. doi: 10.21608/jacb.2010.90052
M. M. Abd El-Maksoud; Z. A. Kosba; R. M. A. Koumber; E. M.A.H. Gebrel. "GENETICAL STUDIES ON SOME ECONOMICAL TRAITS IN BREAD WHEAT (Triticum aestivum L.)". Journal of Agricultural Chemistry and Biotechnology, 1, 7, 2010, 365-381. doi: 10.21608/jacb.2010.90052
Abd El-Maksoud, M., Kosba, Z., Koumber, R., Gebrel, E. (2010). 'GENETICAL STUDIES ON SOME ECONOMICAL TRAITS IN BREAD WHEAT (Triticum aestivum L.)', Journal of Agricultural Chemistry and Biotechnology, 1(7), pp. 365-381. doi: 10.21608/jacb.2010.90052
Abd El-Maksoud, M., Kosba, Z., Koumber, R., Gebrel, E. GENETICAL STUDIES ON SOME ECONOMICAL TRAITS IN BREAD WHEAT (Triticum aestivum L.). Journal of Agricultural Chemistry and Biotechnology, 2010; 1(7): 365-381. doi: 10.21608/jacb.2010.90052
GENETICAL STUDIES ON SOME ECONOMICAL TRAITS IN BREAD WHEAT (Triticum aestivum L.)
1Genetics Dept., Faculty of Agriculture, Mansoura University.
2Wheat Research Dept. Field Crops Research Institute, ARC; Egypt.
Abstract
This investigation aimed to study; (1)The mean performance of ten parents and their F1 diallel crosses, involving some Egyptian and exotic wheat germplasm for yield and its components. (2)The potentiality of heterosis expression, (3) General and specific combining ability and their interactions under two nitrogen fertilization levels. The analytical methods were based largely on Griffing (1956) diallel cross analysis designated as method 2 model 1.
The wheat genotypes P1, P2, P4, P5, P7, P8, P9 and P10 as well as their F1 crosses (P1 × P4), (P1 × P5), (P1 × P10), (P4 × P7) (P4 × P9), (P4 × P10), (P5 × P8), (P7 × P10), (P8 × P9), (P8× P10) and (P9 × P10) were superior for yield contributing characters under different cases. Significant heterobeltiosis was observed in the wheat cross (P2 × P3) and highly significant for number of spikes / plant, (P3 × P4), (P3 × P8), (P4 × P5), (P4 × P7), (P4 × P8), (P4 × P10), (P5 × P7), (P6 × P7) and (P8 × P10) for number of kernels / spike; ( P3 × P4) for 100- kernel weight and the crosses (P3× P8), (P6× P8), (P6× P10), (P7× P9), (P7× P10) , (P8× P9) and (P8× P10) for grain yield / plant under low nitrogen level. While, the two wheat crosses (P3× P8) and (P8× P9) showed highly significant heterosis under the combined.
Sids 1 was the best general combiner for number of spikes / plant under both environments and their combined data; P1, P4, P9 and P10 for number of kernels / spike. In addition, P10 was the promising one for 100- kernel weight, number of kernels /spike and grain yield / plant.
The crosses (P6×P7)and(P9×P10)showed significant and highly significant SCA for number of spikes / plant; ( P2 × P3), ( P3 × P7), ( P3 × P8) ( P4 × P5), ( P4 × P7),( P5 × P7) , ( P5 × P9) , ( P5 × P10) , ( P6 × P7) , (P6 × P8 ) and( P8 × P10) for number of kernels / spike and ( P1 × P4) , ( P7 × P9) and (P7 × P10 ) for grain yield / plant under the two nitrogen levels and their combined data .
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