Conference Proceedings

CO2-induced microclimate changes help wheat to adapt to future climates

M Loew, S Uddin, G Fitzgerald, M Tausz, GJ O'Leary (ed.), RD Armstrong (ed.), L Hafner (ed.)

Australian Society of Agronomy | Published : 2017

Abstract

Optimising water use is a central element of maintaining crop growth and yield in less favourable, drier climates. Rising CO 2 levels alter responses of plants. Some of these responses can be used to help mitigate the effect of rising temperature, less frequent precipitation and prolonged drought. We speculate that closure of stomata under elevated CO 2 (eCO 2 ) allows the plant not only to take advantage of higher water use, but also changes the microclimate within the canopy, around the plant. Increased water use efficiency under eCO 2 is well known, but does this allow wheat in a dryland agriculture system to lower its in-canopy air- temperature and vapour pressure deficit (VPD) which wil..

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University of Melbourne Researchers