Genetic Basis for Variation in Wheat Grain Yield in Response to Varying Nitrogen Application.

ABSTRACT: Nitrogen (N) is a major nutrient needed to attain optimal grain yield (GY) in all environments. Nitrogen fertilisers represent a significant production cost, in both monetary and environmental terms. Developing genotypes capable of taking up N early during development while limiting biomass production after establishment and showing high N-use efficiency (NUE) would be economically beneficial. Genetic variation in NUE has been shown previously. Here we describe the genetic characterisation of NUE and identify genetic loci underlying N response under different N fertiliser regimes in a bread wheat population of doubled-haploid lines derived from a cross between two Australian genotypes (RAC875 × Kukri) bred for a similar production environment. NUE field trials were carried out at four site

SUBMITTER: Mahjourimajd S 

PROVIDER: S-EPMC4961366 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature