Mapping of QTL controlling tocopherol content in winter oilseed rape

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dc.contributor.authorMarwede, V
dc.contributor.authorGül, MK
dc.contributor.authorBecker, HC
dc.contributor.authorEcke, W
dc.date.accessioned2025-01-27T20:16:56Z
dc.date.available2025-01-27T20:16:56Z
dc.date.issued2005
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractTocopherols are natural antioxidants in vegetable oils and are important dietary nutrients. Enhanced tocopherol content has become an important objective in oilseed rape breeding. A segregating DH population was tested for 2 years at two locations in replicated field trials. Genotypic differences occurred for alpha-, gamma- and total tocopherol content as well as alpha/gamma-tocopherol ratio, but highly significant genotype x environment interactions resulted in low heritabilities. Using a mixed-model composite interval mapping approach between one and five QTL with additive and/or additive x environment interaction effects could be mapped for alpha-, gamma- and total tocopherol content and alpha/gamma-tocopherol ratio. In addition, one to six locus pairs with epistatic interaction effects were identified, indicating a strong contribution of epistasis to trait variation. In total, the additive and epistatic effects explained between 28% (alpha-tocopherol content) and 73% (total tocopherol content) of the genotypic variance in the population, with individual QTL and locus pairs contributing between 7.5 and 29.2% of variance. Considering the low heritabilities of the tocopherol traits, the results of this study indicate that marker-assisted selection may be an efficient strategy in a breeding program for enhanced tocopherol content in rapeseed.
dc.identifier.doi10.1111/j.1439-0523.2004.01050.x
dc.identifier.endpage26
dc.identifier.issn0179-9541
dc.identifier.issn1439-0523
dc.identifier.issue1
dc.identifier.scopus2-s2.0-14744277294
dc.identifier.scopusqualityQ2
dc.identifier.startpage20
dc.identifier.urihttps://doi.org/10.1111/j.1439-0523.2004.01050.x
dc.identifier.urihttps://hdl.handle.net/20.500.12428/21442
dc.identifier.volume124
dc.identifier.wosWOS:000226967100005
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofPlant Breeding
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectBrassica napus
dc.subjectmarker-assisted selection
dc.subjectQTL
dc.subjecttocopherol
dc.titleMapping of QTL controlling tocopherol content in winter oilseed rape
dc.typeArticle

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