DOI: 10.1111/gcb.12381
论文题名: Characterizing drought stress and trait influence on maize yield under current and future conditions
作者: Harrison M.T. ; Tardieu F. ; Dong Z. ; Messina C.D. ; Hammer G.L.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期: 3 起始页码: 867
结束页码: 878
语种: 英语
英文关键词: APSIM
; Breeding
; Drought
; Grain
; Model
; Trait
; Water stress
; Zea mays
Scopus关键词: breeding
; carbon dioxide
; climate change
; crop yield
; drought stress
; environmental stress
; global change
; maize
; plant breeding
; water stress
; Zea mays
; APSIM
; article
; breeding
; climate change
; drought
; Europe
; forecasting
; grain
; growth, development and aging
; maize
; model
; physiological stress
; season
; theoretical model
; trait
; water stress
; APSIM
; breeding
; drought
; grain
; model
; trait
; water stress
; Zea mays
; Climate Change
; Droughts
; Europe
; Forecasting
; Models, Theoretical
; Seasons
; Stress, Physiological
; Zea mays
英文摘要: Global climate change is predicted to increase temperatures, alter geographical patterns of rainfall and increase the frequency of extreme climatic events. Such changes are likely to alter the timing and magnitude of drought stresses experienced by crops. This study used new developments in the classification of crop water stress to first characterize the typology and frequency of drought-stress patterns experienced by European maize crops and their associated distributions of grain yield, and second determine the influence of the breeding traits anthesis-silking synchrony, maturity and kernel number on yield in different drought-stress scenarios, under current and future climates. Under historical conditions, a low-stress scenario occurred most frequently (ca. 40%), and three other stress types exposing crops to late-season stresses each occurred in ca. 20% of cases. A key revelation shown was that the four patterns will also be the most dominant stress patterns under 2050 conditions. Future frequencies of low drought stress were reduced by ca. 15%, and those of severe water deficit during grain filling increased from 18% to 25%. Despite this, effects of elevated CO2 on crop growth moderated detrimental effects of climate change on yield. Increasing anthesis-silking synchrony had the greatest effect on yield in low drought-stress seasonal patterns, whereas earlier maturity had the greatest effect in crops exposed to severe early-terminal drought stress. Segregating drought-stress patterns into key groups allowed greater insight into the effects of trait perturbation on crop yield under different weather conditions. We demonstrate that for crops exposed to the same drought-stress pattern, trait perturbation under current climates will have a similar impact on yield as that expected in future, even though the frequencies of severe drought stress will increase in future. These results have important ramifications for breeding of maize and have implications for studies examining genetic and physiological crop responses to environmental stresses. © 2013 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61980
Appears in Collections: 影响、适应和脆弱性
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作者单位: Laboratoire d'Ecophysiologie des Plantes sous Stress Environnementaux, INRA, UMR 759, 2 Place Viala, Montpellier 34060, France; Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, QLD 4072, Australia; Pioneer Hi-Bred International, A DuPont Business, 7250 NW 62nd Avenue, Johnston, IA 50131, United States; Tasmanian Institute of Agriculture, P.O. Box 3523, Burnie, TAS 7320, Australia
Recommended Citation:
Harrison M.T.,Tardieu F.,Dong Z.,et al. Characterizing drought stress and trait influence on maize yield under current and future conditions[J]. Global Change Biology,2014-01-01,20(3)