Mosa,, H., Motawei, A., Gabr, A. (2004). EVALUATION OF NEW INBRED LINES OF YELLOW MAIZE VIA LINE X TESTER ANALYSIS OVER THREE LOCATIONS. Journal of Plant Production, 29(3), 1023-1033. doi: 10.21608/jpp.2004.238512
H. E. Mosa,; A. A. Motawei; Afaf A. J. Gabr. "EVALUATION OF NEW INBRED LINES OF YELLOW MAIZE VIA LINE X TESTER ANALYSIS OVER THREE LOCATIONS". Journal of Plant Production, 29, 3, 2004, 1023-1033. doi: 10.21608/jpp.2004.238512
Mosa,, H., Motawei, A., Gabr, A. (2004). 'EVALUATION OF NEW INBRED LINES OF YELLOW MAIZE VIA LINE X TESTER ANALYSIS OVER THREE LOCATIONS', Journal of Plant Production, 29(3), pp. 1023-1033. doi: 10.21608/jpp.2004.238512
Mosa,, H., Motawei, A., Gabr, A. EVALUATION OF NEW INBRED LINES OF YELLOW MAIZE VIA LINE X TESTER ANALYSIS OVER THREE LOCATIONS. Journal of Plant Production, 2004; 29(3): 1023-1033. doi: 10.21608/jpp.2004.238512
EVALUATION OF NEW INBRED LINES OF YELLOW MAIZE VIA LINE X TESTER ANALYSIS OVER THREE LOCATIONS
Nine inbred lines of yellow maize were top crossed to the three teslers i.e L· 121, S.C.SK·52 and cornposite-Zt during the 2001season. The nine parental inbred lines, Ihe three testers, the 27 top crosses and the two checks (S.C155 and TW.C 352) were evaluated during the 2002 season at Sakha,Sids and Nubraria locations in a randomized complete block design with four replications. The data were recorded for grain yield/plant (g). number of rows/ear, number of kemels/row,ear position% and precentage of resistance to late wilt disease. Combining ability analysis was computed via line x tester procedures proposed by Kempthorne (1957). The results could be summarized as follows:·
Significant mean squares for locations, genotypes and their interactions were detected for all the studied traits. Significant lines (L), testers (T) and (L x T) interaction were detected for all studied traits except (L x T) interaction for number of kernels/row and ear position. VVhile, the interaction between (L), (T) and (L x T) with locations were significant for grain yield/plant and resistance to late wilt disease. Additive genetic variance (gca) was predominanting than non-additive genetic variance (sea) in the inheritance of all traits. The non-additive genetic variance showed obvious interaction with locations for grain yield/plant. number of rows/ear and number of kemels/row.The parental inbred lines which showed the best desirable gca effects were SK·7070, SK·707812, SK·7078/30 for grain yield/plant, Gm1 004 for number of rows/ear, SK·7070 for number of kemels/row, SK·7078/30 for ear position and SK·7017/10 for resistance to late wilt disease. On the other hand, the parental testers that exhibited the better general combining ability were L·121 for grain yield/plant and resistance to late wilt disease,S.C.SK·52 for number of rows/ear and ear position and composite-21 for number of kemels/row.The desirable heterotic effects for grain yield/plant relative to the check S.C.155 were recorded for top cross SK·7070 x L·121 (24.65%). Whereas, the highest heterosis values relative to the check T.W.C 352 were detected for the top crosses SK·7070 x L·121 (28.82%) and SK· 707812 x L 121 (17.73%). These two crosses would be prospective and recommended to be used immediately in maize breeding programs.
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