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Proceedings Paper

Responses of winter wheat growth and production under subambient UV-B irradiance
Author(s): Chuanhai Wang; Youfei Zheng; Wei Gao; James R. Slusser; Douliang He
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Paper Abstract

The greater UV-B radiation has heightened concern that it has adverse impact on agricultural production and natural plant ecosystems. The effect of UV-B enhancements on plants includes reduction in grain yield, alteration in species competition, decrease in photosynthetic activity, susceptibility to disease, and changes in plant structure and pigmentation. Plant responses to UV-B enhancements also include increased accumulation of flavoids, increased leaf thickness, increased reflectance of leaves, reductions in growth, and direct damage to photosynthetic mechanisms. One-third to one-half of all plant species tested are deleteriously affected by UV-B irradiance levels “above ambient.” This experiment was conducted to study responses of winter wheat growth and production under both ambient and sub-ambient UV-B irradiance (15.3% UV-B irradiance decrease from ambient level). Sub-ambient UV-B irradiance increased winter wheat growth and production, which indicates that current levels of ambient UV-B irradiance might have an adverse effect in tested areas.

Paper Details

Date Published: 1 July 2003
PDF: 4 pages
Proc. SPIE 4896, Ultraviolet Ground- and Space-based Measurements, Models, and Effects II, (1 July 2003); doi: 10.1117/12.466172
Show Author Affiliations
Chuanhai Wang, Nanjing Institute of Meteorology (China)
Youfei Zheng, Nanjing Institute of Meteorology (China)
Wei Gao, Colorado State Univ. (United States)
James R. Slusser, Colorado State Univ. (United States)
Douliang He, Nanjing Institute of Meteorology (China)

Published in SPIE Proceedings Vol. 4896:
Ultraviolet Ground- and Space-based Measurements, Models, and Effects II
Wei Gao; Jay R. Herman; Guangyu Shi; Kazuo Shibasaki; James R. Slusser, Editor(s)

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