Estimation of The Combining Ability for Some New White Maize Inbred Lines under Different Environmental Conditions | ||||
| Egyptian Journal of Agronomy | ||||
| Article 3, Volume 34, Issue 2, December 2012, Page 155-177 PDF (259.67 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/agro.2012.98 | ||||
 View on SCiNiTO | ||||
| Abstract | ||||
| THE MAIN objectives of the present study was to estimate the combining ability for some new white maize inbred lines under different environmental conditions and evaluation the 21 F1 crosses come from this study under two plant densities (D1 and D2) at two locations (L1 and L2). Obtained results could be summarized as follows: The non-additive genetic effects was more important than additive genetic effects in the inheritance of this traits; grain yield at L1D1, L1D2, L2D2 and combined data, days to 50% silking at all environments and combined data, ear height at L1D2 and 100-kernel weight at L1D1. The additive gene effects were most responsible for controlling the inheritance of this traits; for grain yield at L2D1, plant height under all environments and combined data, ear height at L1D1, L2D1, L2D2 and combined data and 100-kernel weight at L1D2, L2D1, L2D2 and combined data. The inbred lines; P1 at L2D1, P4 at L1D2 and P7 at L1D2 had positive and significant GCA effects for grain yield. The single crosses; (P1xP 4), (P2 x P6), (P2 x P7), (P4 x P7) and (P5 x P7) were the best crosses for superiority relative to SC10 for grain yield. | ||||
| Keywords | ||||
| yellow maize; Combining ability; plant densities | ||||
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