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EVALUATING OF MAIZE SYNTHETIC VARIETIES BY COMBINING OF EMPIRICAL DOUBLE CROSSES | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 19, Issue 7, 2014, Pages 0-0 | ||
| Author | ||
| D. P. Yousif | ||
| Abstract | ||
| Cross breeding program of 13 double crosses with limited combinations according to previous results of breeding and evaluation of Australian and Spanish single crosses, at Al Tajii Experimental Station, Al-Rabee Center for Agricultural and Food Research was carried out. The objective of this study was to asses the ability of deducing an elite synthetic variety with high grain yield and other agronomic traits. Yield trials of 17 experimental genotypes (synthetic varieties), in addition to Rabee local synthetic variety as a control, were conducted on fall of 1997 and 1998. Results revealed that Rabee local variety exceeding all overall genotypes under investigation in grain yield (6548 kg/ha), rows/ear (16.8), kernels/row (43.41), and weight of 500 kernels (149g). The exceeding of local variety reflecting the ability to utilize of several genotypes as breeding populations due to its genetic diversity, for recurrent selection program and/ or line breeding. Kernel rows and kernels weight showed the higher effect on grain yield in comparison with the other agronomic traits under investigation. Which reflects their importance in further breeding program. | ||
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