Functional mapping of N deficiency-induced response in wheat yield-component traits by implementing high-throughput phenotyping

Libo Jiang, Lidan Sun, Meixia Ye, Jing Wang, Yaqun Wang, Matthieu Bogard, Xavier Lacaze, Antoine Fournier, Katia Beauchêne, David Gouache, Rongling Wu

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

As overfertilization leads to environmental concerns and the cost of N fertilizer increases, the issue of how to select crop cultivars that can produce high yields on N-deficient soils has become crucially important. However, little information is known about the genetic mechanisms by which crops respond to environmental changes induced by N signaling. Here, we dissected the genetic architecture of N-induced phenotypic plasticity in bread wheat (Triticum aestivum L.) by integrating functional mapping and semiautomatic high-throughput phenotyping data of yield-related canopy architecture. We identified a set of quantitative trait loci (QTLs) that determined the pattern and magnitude of how wheat cultivars responded to low N stress from normal N supply throughout the wheat life cycle. This analysis highlighted the phenological landscape of genetic effects exerted by individual QTLs, as well as their interactions with N-induced signals and with canopy measurement angles. This information may shed light on our mechanistic understanding of plant adaptation and provide valuable information for the breeding of N-deficiency tolerant wheat varieties.

Original languageEnglish (US)
Pages (from-to)1105-1119
Number of pages15
JournalPlant Journal
Volume97
Issue number6
DOIs
StatePublished - Mar 2019

All Science Journal Classification (ASJC) codes

  • Genetics
  • Plant Science
  • Cell Biology

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