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Seed Survival in Genebanks - Genetic and Biochemical Aspects of Seed Deterioration in Barley
Taschenbuch von Manuela Nagel
Sprache: Englisch

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Beschreibung
Against the background of 7.4 million accessions stored in genebanks, long-term survival of stored seeds is an important trait. This study intended to elucidate genetic and biochemical mechanisms underlying barley (Hordeum vulgare L.) seed deterioration with respect to genetic diversity at different storage treatments ranging from cold storage with low seed moisture content (smc) to experimental seed ageing with high smc.
On the basis of an assumed genetic impact on seed deterioration quantitative genetic analyses using four mapping populations were applied. Seeds of three bi-parental barley mapping populations were experimentally aged. Subsequent quantitative trait locus (QTL) analyses revealed 4 major loci on chromosomes 2H, 5H and 7H explaining a phenotypic variation up to 54%. Detected loci were confirmed by the fourth population that compromises a collection of independent barley accessions. These genotypes, multiplied in two field plots and experimentally aged were analysed by a genome-wide association approach which resulted in 105 marker-trait associations (MTAs) at 32 loci. Putative functions of MTAs and closely linked QTLs revealed predominantly biotic and abiotic stress affect seed longevity.
Against the background of 7.4 million accessions stored in genebanks, long-term survival of stored seeds is an important trait. This study intended to elucidate genetic and biochemical mechanisms underlying barley (Hordeum vulgare L.) seed deterioration with respect to genetic diversity at different storage treatments ranging from cold storage with low seed moisture content (smc) to experimental seed ageing with high smc.
On the basis of an assumed genetic impact on seed deterioration quantitative genetic analyses using four mapping populations were applied. Seeds of three bi-parental barley mapping populations were experimentally aged. Subsequent quantitative trait locus (QTL) analyses revealed 4 major loci on chromosomes 2H, 5H and 7H explaining a phenotypic variation up to 54%. Detected loci were confirmed by the fourth population that compromises a collection of independent barley accessions. These genotypes, multiplied in two field plots and experimentally aged were analysed by a genome-wide association approach which resulted in 105 marker-trait associations (MTAs) at 32 loci. Putative functions of MTAs and closely linked QTLs revealed predominantly biotic and abiotic stress affect seed longevity.
Details
Erscheinungsjahr: 2011
Fachbereich: Landwirtschaft & Gartenbau
Genre: Umwelt
Produktart: Nachschlagewerke
Rubrik: Ökologie
Medium: Taschenbuch
Seiten: 134
ISBN-13: 9783869558714
ISBN-10: 3869558717
Sprache: Englisch
Ausstattung / Beilage: Paperback
Einband: Kartoniert / Broschiert
Autor: Nagel, Manuela
Hersteller: Cuvillier
Cuvillier Verlag
Maße: 210 x 148 x 8 mm
Von/Mit: Manuela Nagel
Erscheinungsdatum: 20.09.2011
Gewicht: 0,184 kg
preigu-id: 120646050
Details
Erscheinungsjahr: 2011
Fachbereich: Landwirtschaft & Gartenbau
Genre: Umwelt
Produktart: Nachschlagewerke
Rubrik: Ökologie
Medium: Taschenbuch
Seiten: 134
ISBN-13: 9783869558714
ISBN-10: 3869558717
Sprache: Englisch
Ausstattung / Beilage: Paperback
Einband: Kartoniert / Broschiert
Autor: Nagel, Manuela
Hersteller: Cuvillier
Cuvillier Verlag
Maße: 210 x 148 x 8 mm
Von/Mit: Manuela Nagel
Erscheinungsdatum: 20.09.2011
Gewicht: 0,184 kg
preigu-id: 120646050
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