Agroecological Advantages of Early-Sown Winter Wheat in Semi-Arid Environments: A Comparative Case Study From Southern Australia and Pacific Northwest United States

Frontiers in Plant Science
David J CannFelicity A J Harris

Abstract

Wheat (Triticum aestivum L.) is the most widely-grown crop in the Mediterranean semi-arid (150-400 mm) cropping zones of both southern Australia and the inland Pacific Northwest (PNW) of the United States of America (United States). Low precipitation, low winter temperatures and heat and drought conditions during late spring and summer limit wheat yields in both regions. Due to rising temperatures, reduced autumn rainfall and increased frost risk in southern Australia since 1990, cropping conditions in these two environments have grown increasingly similar. This presents the opportunity for southern Australian growers to learn from the experiences of their PNW counterparts. Wheat cultivars with an obligate vernalization requirement (winter wheat), are an integral part of semi-arid PNW cropping systems, but in Australia are most frequently grown in cool or cold temperate cropping zones that receive high rainfall (>500 mm p.a.). It has recently been shown that early-sown winter wheat cultivars can increase water-limited potential yield in semi-arid southern Australia, in the face of decreasing autumn rainfall. Despite this research, there has to date been little breeding effort invested in winter wheat for growers in semi-arid so...Continue Reading

References

Aug 17, 2010·Journal of Experimental Botany·J A Kirkegaard, J R Hunt
May 24, 2014·Methods in Molecular Biology·Daniel Z Skinner, Kimberly Garland-Campbell
Jan 25, 2017·Global Change Biology·Zvi HochmanHeidi Horan
Aug 5, 2017·Frontiers in Plant Science·Renu SaradadeviKadambot H M Siddique
Jul 31, 2019·BMC Plant Biology·William D BovillWolfgang Spielmeyer
Jun 6, 2020·Frontiers in Plant Science·Bonnie M FlohrMelanie Bullock
Aug 6, 2020·Frontiers in Plant Science·Kenton PorkerJames Robert Hunt

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