The effect of nitrogen fertilization on tocopherols in rapeseed genotypes

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dc.authoridKahrıman, Fatih/0000-0001-6944-0512
dc.contributor.authorEgesel, Cem Omer
dc.contributor.authorGul, M. Kemal
dc.contributor.authorKahrıman, Fatih
dc.contributor.authorOzer, Irfan
dc.contributor.authorTurk, Figen
dc.date.accessioned2025-01-27T20:29:45Z
dc.date.available2025-01-27T20:29:45Z
dc.date.issued2008
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractTocopherols (alpha-, beta-, gamma- and delta-tocopherol) are naturally occuring antioxidants in vegetable oils. In rapeseed oil, alpha- and gamma-tocopherols are the predominant isomers, while delta-tocopherol contributes much lower amounts to the total tocopherol content. Enhanced tocopherol content in seeds appears favourable, and breeding for tocopherol content has become an increasingly important objective in winter oilseed rape. The main objectives of this research were to quantify the amount of tocopherols in a number of rapeseed varieties and to investigate the effect of nitrogen fertilization on tocopherol concentration in the seed. The field trials were carried out in 2004-2005 and 2005-2006 at Dardanos, Canakkale on the Turkish West Coast (10 km south of the city centre) with 13 varieties, three replications and three nitrogen levels (N-0: 0 kg/ha, N-1: 130 kg/ha and N-2: 260 kg/ha). The trial used a randomized complete block design with 6 m(2) plots. Tocopherol analysis was done using an HPLC system. Significant differences were found among the varieties and between the nitrogen levels. The average total tocopherol concentration was 118.7 mg kg(-1) for N-1, 134.1 mg kg(-1) for N-2 and 133.6 mg kg(-1) for N-3 fertilization level. MDS analysis indicated a rough grouping of line versus hybrid varieties and suggested that hybrids require more breeding effort to reach the level of tocopherols existed in line varieties.
dc.identifier.doi10.1007/s00217-007-0798-2
dc.identifier.endpage880
dc.identifier.issn1438-2377
dc.identifier.issn1438-2385
dc.identifier.issue3
dc.identifier.scopus2-s2.0-46549088299
dc.identifier.scopusqualityQ1
dc.identifier.startpage871
dc.identifier.urihttps://doi.org/10.1007/s00217-007-0798-2
dc.identifier.urihttps://hdl.handle.net/20.500.12428/23029
dc.identifier.volume227
dc.identifier.wosWOS:000256529400026
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofEuropean Food Research and Technology
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectBrassica napus
dc.subjectoil quality
dc.subjectgenotype
dc.subjectenvironment
dc.titleThe effect of nitrogen fertilization on tocopherols in rapeseed genotypes
dc.typeArticle

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