- Title
- Annual ryegrass (Lolium rigidum Gaud) competition altered wheat grain quality : A study under elevated atmospheric CO2 levels and drought conditions
- Creator
- Fernando, Nimesha; Florentine, Singarayer; Naiker, Mani; Panozzo, Joe; Chauhan, Bhagirath
- Date
- 2019
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/170404
- Identifier
- vital:14148
- Identifier
-
https://doi.org/10.1016/j.foodchem.2018.09.145
- Identifier
- ISBN:0308-8146
- 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 (400 ppm; (a[CO2]) vs 700 ppm; (e[CO2]), two levels of water (well-watered vs drought) and two types of competition (wheat only; (W), and wheatxannual ryegrass; (W x R) with four replicates. The competitionx[CO2] interaction had a significant effect on wheat grain protein content, where it was increased in W x R under both e[CO2] (+ 17%) and a[CO2] (+ 21%). Grain yield, total grain reducing power and phenolic content were significantly affected by [CO2] x drought x 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.
- Publisher
- Elsevier Ltd
- Relation
- Food Chemistry Vol. 276, no. (2019), p. 285-290
- Rights
- Copyright © 2018 Elsevier Ltd. All rights reserved.
- Rights
- Open Access
- Rights
- This metadata is freely available under a CCO license
- Subject
- MD Multidisciplinary; Wheat grain quality; Wheat; Annual ryegrass; Weed competition; Grain protein concentration; Grain total reducing power; Grain total phenolics
- Full Text
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