STUDY OF SOME TOMATO HYBRIDS UNDER DIFFERENT ENVIRONMENTS. | ||||
| Journal of Plant Production | ||||
| Article 15, Volume 31, Issue 8, August 2006, Page 5059-5068 PDF (137.92 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2006.236104 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| El-Sh. A. Amin. | ||||
| Veg. Res. Dept.. Hort. Res. institute. Agric. Res. Center, ARC Egypt. | ||||
| Abstract | ||||
| in this investigation. three parental (Lines) and three varieties (testers) Three lines are [ACVF imp. 55 (P1), Calace (P2) and Marglope (133)] and Testers are [Floradade (P4). Castle Rock (P5) and Edkawy (Pan of tomato belonging to lycopersicon esculentum Mill were used as parents. All parents were crossed among them to obtain nine F1 hybrids through line x testers mating design. All six parents and the nine F1 hybrids were evaluated at two locations. At Dakhlia and Esmailia governorates. The results indicated the presence of significant variability among all evaluated genotypes, parents and F1 hybrids. The results also revealed that the parent Edkawy (P5) was the best parent for most studied traits at two locations and over all two locations. While. the results also cleared that there were no specific F1 hybrids was the best for all studied traits at locations or from the combined. The results also reveald that all studied traits showed highly significance values of heterosis versus the mid-parents. On the other hand, all studied traits showed highly significant negative values (undesirable) of heterosis against the better parents. Concerning genetic parameters, the results illustrated that the additive genetic variances were larger than those the non-additive genetic variances including dominance for most studied traits. Similarly, highly estimates of heritability in broad sense were observed, although heritability in broad sense were larger than their corresponding heritability values in narrow sense. Thus, the genetic materials used in this investigation could be improve through selection progame. | ||||
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