USING EGYPTIAN RESTORER LINES iN GRAIN SORGHUM HYBRIDS PRODUCTION (Sorghum bicolor L. MOENCH) | ||
| Journal of Plant Production | ||
| Article 3, Volume 31, Issue 1, January 2006, Pages 29-42 PDF (4.24 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2006.235680 | ||
| Authors | ||
| M. R. A. Hovny,; K. M. Mahmoud; H. I. AIi | ||
| Sorghum Research Dept., Field Crop Research Institute, ARC, Egypt. | ||
| Abstract | ||
| Three advanced generation genotypes released from the Egyptian Sorghum Breeding Program were used for crossing with seven cytoplasmic male sterile tines I n order to involve the adapted restorer gene in our released grain sorghum hybrids. The twenty-one crosses and their parents were evaluated in a randomized complete block design at two locations, Shandwell Agric. Res. Farm and Assiut Agric. Res. Farm, in 2002 season. The genetic parameters were estimated by using line x tester analysis. The obtained data at the both locations revealed that crosses had highly significant differences among all studied traits. AU the crosses were earlier at Assiut than at Shandwell. For grain yield at Shandwell, eight crosses had higher grain yield than the check (Shandweet-6) one of them (ICSA-89003 x Ad.1 ) (120.69 g/plant) was significantly higher than the check (95.13 g/plant) white, non of the crosses yielded more than the check at Assiut, that may be due to Assiut farm is coarse sandy soil and that is clear in the heterosis which was high at Assiut compare with the heterosiS at Shandwell and that due to the lines were unable to yield under the harsh environments at Assiut as crosses did. For general combining ability (GCA) of grain yield, the restorer line Ad.1 had positive and highly significant GCA effect at Shandwell (loamy-soil), while, Ad.2 had the same trend at Assiut that means the genotype Ad.2 more adapted for the coarse sandy soil. For specific combining ability (SCA) of grain yield at Shandwell, ten crosses had positive and significantly SCA affect while, at Assiut, seven crosses had positive and significantly SCA effect. The cross (ICSA-89003 x Ad.1) at Shandwell, which was yielded significantly more than the check, can be tested in a large SCAle before using it as a commercial hybrid in clay and loamy soil. | ||
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