EVALUATION OF DIFFERENT BREAD WHEAT LINES IN THE F6 AND F7 GENERATION FOR GRAIN YIELD AND ITS ATTRIBUTES | ||||
| Journal of Plant Production | ||||
| Article 8, Volume 25, Issue 10, October 2000, Page 6051-6063 PDF (843.16 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2000.259746 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Afaf M. Tolba, | ||||
| Agron. Dept., Fac. Agric., Ain Shams Univ., Cairo, Egypt. | ||||
| Abstract | ||||
| This investigation was carried out to evaluate 66 wheat lines derived from five crosses of bread wheat along with their seven parents and ten check cultivars giving a total of 83 genotypes. The 66 lines were evaluated in the F6 and F7 generations in 1995/96 and 1996/97 seasons, respectively. Statistical analysis showed highly significant differences for all studied traits in the two seasons except kernels weight/spike in the second season. Six lines were earlier in heading date as compared to their parents and the check cultivars in both seasons. With regard to grain yield performance, the lines numbered 49 and 53 gave higher yields in both seasons, while line 46 outyielded all genotypes in the first season but failed to be stable in the second. The highest values of phenotypic and genotypic coefficients of variation were recorded in the two seasons for grain yield /plant followed by kernels weight/spike. Estimates of heritability in the broad sense were high for all studied traits in the two seasons except spikes/plant and spikelets/spike which were moderate in the second season. Phenotypic correlation cofficients showed positive and significant relationship between grain yield/plant and each of heading date, plant height, spikes/plant and 1000-kernel weight. | ||||
| Keywords | ||||
| Bread wheat; genotypes; phenotypic; genotypic; heritability; correlation; agronomic traits | ||||
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