Luxury Vegetative Nitrogen Uptake in Maize Buffers Grain Yield Under Post-silking Water and Nitrogen Stress: A Mechanistic Understanding.

ABSTRACT: During vegetative growth maize can accumulate luxury nitrogen (N) in excess of what is required for biomass accumulation. When post-silking N uptake is restricted, this luxury N may mitigate N stress by acting as an N reserve that buffers grain yield and maintains plant function. The objective of this study was to determine if and how luxury accumulation of N prior to silking can buffer yield against post-silking N and/or water stress in maize. In a greenhouse experiment, maize was grown in high (N^veg) and low (n^veg) N conditions during vegetative growth. The n^veg treatment did not affect biomass accumulation or leaf area by silking but did accumulate less total N compared to the N^veg treatment. The N^veg treatment generated a reserve o

SUBMITTER: Nasielski J 

PROVIDER: S-EPMC6443847 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature