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Seed longevity in oilseed rape (Brassica napus L.) – genetic variation and QTL mapping

Published online by Cambridge University Press:  15 March 2011

Manuela Nagel
Affiliation:
Leibniz Institute for Plant Genetics and Crop Plant Research (IPK), Corrensstraße 3, Gatersleben, Germany
Maria Rosenhauer
Affiliation:
Leibniz Institute for Plant Genetics and Crop Plant Research (IPK), Corrensstraße 3, Gatersleben, Germany
Evelin Willner
Affiliation:
Leibniz Institute for Plant Genetics and Crop Plant Research, Satellite Collections North, Inselstraße 9, Malchow/Poel, Germany
Rod J. Snowdon
Affiliation:
Department of Plant Breeding, Justus Liebig University, Heinrich-Buff-Ring 26–32, Giessen, Germany
Wolfgang Friedt
Affiliation:
Department of Plant Breeding, Justus Liebig University, Heinrich-Buff-Ring 26–32, Giessen, Germany
Andreas Börner*
Affiliation:
Leibniz Institute for Plant Genetics and Crop Plant Research (IPK), Corrensstraße 3, Gatersleben, Germany
*
*Corresponding author. E-mail: boerner@ipk-gatersleben.de

Abstract

Although oilseed rape has become one of the most important oil crops in Europe, little is known regarding the viability of its seed under conditions of long-term storage. We report here an examination of oilseed rape seed longevity performed on a set of 42 accessions housed at the German ex situ genebank at IPK, Gatersleben. A comparison of germination between the accessions stored for 26 years showed that viability was in part genetically determined, since it ranged between 42 and 98%. An attempt was made to define the genetic basis of viability by subjecting a mapping population of doubled haploids to three artificial ageing treatments. Quantitative trait loci (QTL) were detected on six chromosomes: N6, N7, N8, N15, N16 and N18. The chromosomal locations of these QTL were compared with their syntenic regions in Arabidopsis thaliana in order to explore what genes might underlie genetic variation for longevity.

Type
Research Article
Copyright
Copyright © NIAB 2011

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