TAILIEUCHUNG - Quantitative trait loci (QTL) analysis for antioxidant and agronomically important traits in tomato (Lycopersicon esculentum)
Tomato is one of the most widely produced and consumed vegetable crops worldwide. Plant breeders have usually focused on improvement of horticulturally important traits such as yield, fruit size, shape and colour. | B. ÖKMEN, H. Ö. ŞIĞVA, N. GÜRBÜZ, M. ÜLGER, A. FRARY, S. DOĞANLAR Research Article Turk J Agric For 35 (2011) 501-514 © TÜBİTAK doi: Quantitative trait loci (QTL) analysis for antioxidant and agronomically important traits in tomato (Lycopersicon esculentum) Bilal ÖKMEN1, Hasan Özgür ŞIĞVA1, Nergiz GÜRBÜZ2, Mehmet ÜLGER3, Anne FRARY2, Sami DOĞANLAR2,* 1 Biotechnology Program, İzmir Institute of Technology, Urla, İzmir - TURKEY 2 Department of Molecular Biology & Genetics, İzmir Institute of Technology, Urla, İzmir - TURKEY 3 MULTI Tarım Seed Company, Antalya - TURKEY Received: Abstract: Tomato is one of the most widely produced and consumed vegetable crops worldwide. Plant breeders have usually focused on improvement of horticulturally important traits such as yield, fruit size, shape and colour. With increased attention on human health, however, plant breeders also consider the improvement of health-related traits of fruits and vegetables such as antioxidant characters. In the present study, genes controlling both health-related and horticulturally important traits were mapped in the tomato genome using 152 Lycopersicon hirsutum BC2F2 individuals. For this aim, all plants were phenotypically and genotypically characterised and a total of 75 QTLs were identified for all traits. Of the 75 QTLs, 28 were identified for 5 antioxidant traits including total water soluble antioxidant capacity, vitamin C, total phenolics, total flavonoids, and lycopene contents, and 47 QTLs were identified for 8 agronomic traits including fruit weight, external and internal fruit colour, fruit firmness, fruit shape, stem scar size, locule number, and wall thickness. Markers linked with these QTLs can be used in marker assisted selection (MAS) for improvement of elite tomato lines. Key words: Tomato, quantitative trait loci, linkage map, antioxidant, agronomic traits, marker assisted selection Domates (Lycopersicon esculentum)’te antioksidant ve .
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