Genomic regions associated with the nitrogen limitation response revealed in a global wheat core collection

Autor: A. L. Pissavy, Emmanuel Heumez, Jacques Bordes, J. P. Jaubertie, François Balfourier, B. Duperrier, J. Le Gouis, O. Gardet, Catherine Ravel, Gilles Charmet
Přispěvatelé: Génétique Diversité et Ecophysiologie des Céréales (GDEC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de la Recherche Agronomique (INRA), Génétique Quantitative et Evolution - Le Moulon (Génétique Végétale) (GQE-Le Moulon), Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Paris-Sud - Paris 11 (UP11)-Institut National de la Recherche Agronomique (INRA), Stress Abiotiques et Différenciation des Végétaux Cultivés (SADV), Institut National de la Recherche Agronomique (INRA)-Université de Lille, Sciences et Technologies, Enterprise Competitiveness Fund Project 'Semences de Demain', Institut National de la Recherche Agronomique (INRA)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP), Institut National de la Recherche Agronomique (INRA)-Université Paris-Sud - Paris 11 (UP11)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS), Université de Lille, Sciences et Technologies-Institut National de la Recherche Agronomique (INRA)
Jazyk: angličtina
Rok vydání: 2013
Předmět:
0106 biological sciences
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences
Breeding
01 natural sciences
TRITICUM-AESTIVUM L
Cultivar
AGRONOMIC TRAITS
Leaching (agriculture)
Association mapping
Triticum
GRAIN PROTEIN-CONTENT
2. Zero hunger
0303 health sciences
Chromosome Mapping
food and beverages
General Medicine
Genomics
WINTER-WHEAT
Nitrogen
Europe
Phenotype
RYE TRANSLOCATION
Fertilizer
Seasons
Biotechnology
Genetic Markers
Genotype
BREAD-WHEAT
chemistry.chemical_element
engineering.material
Biology
Environment
Genes
Plant
Chromosomes
Plant
03 medical and health sciences
USE EFFICIENCY
Genetics
Plant breeding
POPULATION-STRUCTURE
Fertilizers
030304 developmental biology
Crop yield
Genetic Variation
Quantitative genetics
15. Life on land
chemistry
Agronomy
Genetic Loci
engineering
Agronomy and Crop Science
HEXAPLOWHEAT
QUANTITATIVE GENETICS
010606 plant biology & botany
Zdroj: Theoretical and Applied Genetics
Theoretical and Applied Genetics, SpringerLink, 2013, 126 (3), pp.805-822. ⟨10.1007/s00122-012-2019-z⟩
TAG Theoretical and Applied Genetics
TAG Theoretical and Applied Genetics, 2013, 126 (3), pp.805-822. ⟨10.1007/s00122-012-2019-z⟩
ISSN: 0040-5752
1432-2242
DOI: 10.1007/s00122-012-2019-z⟩
Popis: Modern wheat (Triticum aestivum L.) varieties in Western Europe have mainly been bred, and selected in conditions where high levels of nitrogen-rich fertilizer are applied. However, high input crop management has greatly increased the risk of nitrates leaching into groundwater with negative impacts on the environment. To investigate wheat nitrogen tolerance characteristics that could be adapted to low input crop management, we supplied 196 accessions of a wheat core collection of old and modern cultivars with high or moderate amounts of nitrogen fertilizer in an experimental network consisting of three sites and 2 years. The main breeding traits were assessed including grain yield and grain protein content. The response to nitrogen level was estimated for grain yield and grain number per m(2) using both the difference and the ratio between performance at the two input levels and the slope of joint regression. A large variability was observed for all the traits studied and the response to nitrogen level. Whole genome association mapping was carried out using 899 molecular markers taking into account the five ancestral group structure of the collection. We identified 54 main regions involving almost all chromosomes that influence yield and its components, plant height, heading date and grain protein concentration. Twenty-three regions, including several genes, spread over 16 chromosomes were involved in the response to nitrogen level. These chromosomal regions may be good candidates to be used in breeding programs to improve the performance of wheat varieties at moderate nitrogen input levels.
Databáze: OpenAIRE
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