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Assessing the effects of ambient ozone in China on snap bean genotypes by using ethylenediurea (EDU)

Yuan, Xiangyang; Calatayud, Vicent; Jiang, Lijun; Manning, William J.; Hayes, Felicity; Tian, Yuan; Feng, Zhaozhong. 2015 Assessing the effects of ambient ozone in China on snap bean genotypes by using ethylenediurea (EDU). Environmental Pollution, 205. 199-208. https://doi.org/10.1016/j.envpol.2015.05.043

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Abstract/Summary

Four genotypes of snap bean (Phaseolus vulgaris L.) were selected to study the effects of ambient ozone concentration at a cropland area around Beijing by using 450 ppm of ethylenediurea (EDU) as a chemical protectant. During the growing season, the 8 h (9:00–17:00) average ozone concentration was very high, approximately 71.3 ppb, and AOT40 was 29.0 ppm.h. All genotypes showed foliar injury, but ozone-sensitive genotypes exhibited much more injury than ozone-tolerant ones. Compared with control, EDU significantly alleviated foliar injury, increased photosynthesis rate and chlorophyll a fluorescence, Vcmax and Jmax, and seed and pod weights in ozone-sensitive genotypes but not in ozone-tolerant genotypes. EDU did not significantly affect antioxidant contents in any of the genotypes. Therefore, EDU effectively protected sensitive genotypes from ambient ozone damage, while protection on ozone-tolerant genotypes was limited. EDU can be regarded as a useful tool in risk assessment of ambient ozone on food security.

Item Type: Publication - Article
Digital Object Identifier (DOI): https://doi.org/10.1016/j.envpol.2015.05.043
CEH Sections/Science Areas: Emmett
ISSN: 0269-7491
Additional Keywords: ozone impacts, agriculture, crop loss, integrated assessment, ambient ozone, ethylenediurea, photosynthesis, snap bean, yield
NORA Subject Terms: Ecology and Environment
Agriculture and Soil Science
Atmospheric Sciences
Botany
Date made live: 25 Jun 2015 13:22 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/511144

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