Genomic regions associated with the nitrogen limitation response revealed in a global wheat core collection
type: Dataset
description: 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.
issued: 2026-05-05T21:38:53.564354
language: en
modified: 2026-05-05T21:38:53.564359
contact point: Organization
  fn: CCSD
keyword: agronomic-traits
keyword: bread-wheat
keyword: grain-protein-content
keyword: hexaplowheat
keyword: infoeu-reposemanticsarticle
keyword: journal-articles
keyword: population-structure
keyword: quantitative-genetics
keyword: rye-translocation
keyword: sdvsalife-sciences-q-bioagricultural-sciences
keyword: triticum-aestivum-l
keyword: use-efficiency
keyword: winter-wheat
landing page: 0040-5752

Genomic regions associated with the nitrogen limitation response revealed in a global wheat core collection
type: Distribution
format: HTML
issued: 2026-05-05T21:38:53.566947
modified: 2026-05-05T21:38:53.539849
access URL: https://hal.science/hal-00964316

test_moissonnage_selune
type: Agent