DOI: 10.1111/gcb.13318
论文题名: Has the sensitivity of soybean cultivars to ozone pollution increased with time? An analysis of published dose–response data
作者: Osborne S.A. ; Mills G. ; Hayes F. ; Ainsworth E.A. ; Büker P. ; Emberson L.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期: 9 起始页码: 3097
结束页码: 3111
语种: 英语
英文关键词: China
; crops
; cultivar
; food security
; Glycine max
; India
; response functions
; yield
Scopus关键词: atmospheric pollution
; concentration (composition)
; crop yield
; cultivar
; environmental factor
; food security
; ozone
; soybean
; China
; India
; United States
; Glycine max
英文摘要: The rising trend in concentrations of ground-level ozone (O3) – a common air pollutant and phytotoxin – currently being experienced in some world regions represents a threat to agricultural yield. Soybean (Glycine max (L.) Merr.) is an O3-sensitive crop species and is experiencing increasing global demand as a dietary protein source and constituent of livestock feed. In this study, we collate O3 exposure-yield data for 49 soybean cultivars, from 28 experimental studies published between 1982 and 2014, to produce an updated dose–response function for soybean. Different cultivars were seen to vary considerably in their sensitivity to O3, with estimated yield loss due to O3 ranging from 13.3% for the least sensitive cultivar to 37.9% for the most sensitive, at a 7-h mean O3 concentration (M7) of 55 ppb – a level frequently observed in regions of the USA, India and China in recent years. The year of cultivar release, country of data collection and type of O3 exposure used were all important explanatory variables in a multivariate regression model describing soybean yield response to O3. The data show that the O3 sensitivity of soybean cultivars increased by an average of 32.5% between 1960 and 2000, suggesting that selective breeding strategies targeting high yield and high stomatal conductance may have inadvertently selected for greater O3 sensitivity over time. Higher sensitivity was observed in data from India and China compared to the USA, although it is difficult to determine whether this effect is the result of differential cultivar physiology, or related to local environmental factors such as co-occurring pollutants. Gaining further understanding of the underlying mechanisms that govern the sensitivity of soybean cultivars to O3 will be important in shaping future strategies for breeding O3-tolerant cultivars. © 2016 The Authors. Global Change Biology Published by John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61301
Appears in Collections: 影响、适应和脆弱性
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作者单位: Centre for Ecology and Hydrology, Environment Centre Wales, Bangor, United Kingdom; Stockholm Environment Institute, University of York, York, United Kingdom; USDA ARS Global Change and Photosynthesis Research Unit, Urbana, IL, United States
Recommended Citation:
Osborne S.A.,Mills G.,Hayes F.,et al. Has the sensitivity of soybean cultivars to ozone pollution increased with time? An analysis of published dose–response data[J]. Global Change Biology,2016-01-01,22(9)