Combining Ability and Hybrid Breeding in Tunisian Melon (Cucumis melo L.) for Fruit Traits
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Date
2024
Authors
Chikh Rouhou, HelaKienbaum, Lydia
Gharib, Amani H. A. M.
Fayos Avellán, Oreto
Garcés Claver, Ana
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Abstract
A half-diallel cross study of seven melon inbred lines was carried out. The seven parents and their 21 F1 hybrids were evaluated for precocity of maturity, average weight per fruit, and fruit quality (fruit size, rind thickness, and soluble solids). The Diallel analysis was investigated for breeding values of these melon genotypes via general and specific combining ability, relationships between general and specific combining ability, and heterosis for the evaluated traits. The analysis of variance of the traits evaluated indicated highly significant differences among genotypes, suggesting the presence of adequate genetic variation for breeding. Additive genetic effects were most important with respect to fruit weight, while genetic dominance and epistasis effects mainly controlled fruit quality traits (fruit size, rind thickness, and TSS). Parent 1 (P1) and parent 3 (P3) had significant positive general combining ability effects for fruit weight. Also, P3 had positive general combining ability effects for fruit length and diameter, and cavity diameter. P3 was found to show maximum significant GCA in the desirable direction for all the traits except for TSS. Evaluation of heterosis (%) revealed that hybrid P1 × P3 can be considered as the best-performing hybrid for average fruit weight, TSS, and precocity, which also exhibited the highest positive and significant SCA effect for these traits. These results suggested that, among the melon genotypes studied, there is the potential to generate superior new varieties in hybrid production.
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Bibliographic citation
Chikh-Rouhou, H.; Kienbaum, L.; Gharib, A.H.A.M.;
Fayos, O.; Garcés-Claver, A. Combining Ability and Hybrid Breeding
in Tunisian Melon (Cucumis melo L.) for Fruit Traits. Horticulturae 2024, 10, 724. https://doi.org/10.3390/
horticulturae10070724
AGROVOC subjects
Cucumis meloDiversidad genética (como recurso)
Heredabilidad
Calidad de los alimentos
Vigor híbrido
Other field subjects
Calidad De Los AlimentosCucumis melo
Diversidad Genética (Como Recurso)
Heredabilidad
Vigor Híbrido
Sponsorship
: This research was supported in part by Research laboratory LR21AGR03-Production and Protection for a Sustainable Horticulture, funded by the Ministry of Higher Education and Scientific Research of Tunisia and partially financed by the A11-20R project funded by the Aragon Government and by the AGROALNEXT program supported by MCIN with funding from European Union NextGenerationEU (PRTR-C17.I1) and PID2020-116055RB-C22 I+D+I project funded by MCIN/AEI/10.13039/501100011003.