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

Autor: Meixia Ye, Matthieu Bogard, Katia Beauchene, Libo Jiang, Jing Wang, Antoine Fournier, Rongling Wu, Yaqun Wang, Lidan Sun, David Gouache, Xavier Lacaze
Rok vydání: 2019
Předmět:
Zdroj: The Plant Journal. 97:1105-1119
ISSN: 1365-313X
0960-7412
Popis: 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.
Databáze: OpenAIRE
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