NAM gene allelic composition and its relation to grain-filling duration and nitrogen utilisation efficiency of Australian wheat.

ABSTRACT: Optimising nitrogen fertiliser management in combination with using high nitrogen efficient wheat cultivars is the most effective strategy to maximise productivity in a cost-efficient manner. The present study was designed to investigate the associations between nitrogen utilisation efficiency (NUtE) and the allelic composition of the NAM genes in Australian wheat cultivars. As results, the non-functional NAM-B1 allele was more responsive to the nitrogen levels and increased NUtE significantly, leading to a higher grain yield but reduced grain protein content. Nitrogen application at different developmental stages (mid-tillering, booting, and flowering) did not show significant differences in grain yield and protein content. The NAM-A1 allelic variation is significantly associated with the

SUBMITTER: Alhabbar Z 

PROVIDER: S-EPMC6188794 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature