Source-sink relationships during grain filling in wheat in response to various temperature, water deficit, and nitrogen deficit regimes.

ABSTRACT: Grain filling is a critical process for improving crop production under adverse conditions caused by climate change. Here, using a quantitative method, we quantified post-anthesis source-sink relationships of a large dataset to assess the contribution of remobilized pre-anthesis assimilates to grain growth for both biomass and nitrogen. The dataset came from 13 years of semi-controlled field experimentation, in which six bread wheat genotypes were grown at plot scale under contrasting temperature, water, and nitrogen regimes. On average, grain biomass was ~10% higher than post-anthesis above-ground biomass accumulation across regimes and genotypes. Overall, the estimated relative contribution (%) of remobilized assimilates to grain biomass became increasingly significant with increasing st

SUBMITTER: Fang L 

PROVIDER: S-EPMC11522979 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature