Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11011795 | Food Chemistry | 2019 | 22 Pages |
Abstract
Annual ryegrass is one of the most serious, costly weeds of winter cropping systems in Australia. To determine whether its competition-mediated plant defence mechanisms effect on wheat grain quality, wheat (cv. Yitpi) and annual ryegrass were grown under two levels of CO2 (400â¯ppm; (a[CO2]) vs 700â¯ppm; (e[CO2]), two levels of water (well-watered vs drought) and two types of competition (wheat only; (W), and wheatâ¯Ãâ¯annual ryegrass; (Wâ¯Ãâ¯R) with four replicates. The competitionâ¯Ãâ¯[CO2] interaction had a significant effect on wheat grain protein content, where it was increased in Wâ¯Ãâ¯R under both e[CO2] (+17%) and a[CO2] (+21%). Grain yield, total grain reducing power and phenolic content were significantly affected by [CO2]â¯Ãâ¯droughtâ¯Ãâ¯competition. In a summary, annual ryegrass competition significantly altered the wheat grain quality under both [CO2] levels (depending on the soil water level), while also decreasing the grain yield.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Nimesha Fernando, Singarayer K. Florentine, Mani Naiker, Joe Panozzo, Bhagirath S. Chauhan,