Combining Ability of Some New White Inbred Lines of Maize for Grain Yield and other Traits | ||||
| Journal of Plant Production | ||||
| Article 16, Volume 7, Issue 12, December 2016, Page 1371-1375 PDF (441.79 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2016.47059 | ||||
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| Authors | ||||
| A. A. El-Shenawy; S. M. Abo El-Haress | ||||
| Maize Research Department, FCRI, ARC, Egypt | ||||
| Abstract | ||||
| Nineteen inbred lines of white maize divered from S5 generation at Sakha Agricultural Research Station were crossed with two inbred lines as testers in 2014 summer season. The 38 topcrosses were evaluated at Sakha and Mallawy Research Stations during summer season 2015 for eight studied traits, namely days to 50% silking, plant and ear heights, grain yield (ton/ha) adjusted on 15.5% grain moisture content, ear length (cm), ear diameter (cm), number of rows per ear and number of kernels per row. Mean squares due to lines , testers and line×tester were highly significant for most traits. While the interaction between lines, testers and locations were not significant for most traits. One topcross Sk5002/9×Sk13 (14.5 ton/ha) outyielded the check SC128 (13.2 ton/ha), also 13 topcrosses outyielded significantly the single cross SC10. These crosses could be used in the maize breeding program in the future. Highly significant and desirable GCA effects were exhibited in Sk5001/2, Sk5002/9, Sk5002/10, Sk5002/11 and Sk5003/15 inbred lines for grain yield. Generally these inbred lines could be used in future stage of evaluation in the maize breeding program. | ||||
| Keywords | ||||
| Line × Tester analysis; GCA; SCA; Zea mays | ||||
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