Responses of winter wheat growth and production under subambient UV-B irradiance

Chuanhai Wang; Youfei Zheng; Wei Gao; James R. Slusser; Douliang He

doi:10.1117/12.466172

1 July 2003 Responses of winter wheat growth and production under subambient UV-B irradiance

Chuanhai Wang, Youfei Zheng, Wei Gao, James R. Slusser, Douliang He

Proceedings Volume 4896, Ultraviolet Ground- and Space-based Measurements, Models, and Effects II; (2003) https://doi.org/10.1117/12.466172
Event: Third International Asia-Pacific Environmental Remote Sensing Remote Sensing of the Atmosphere, Ocean, Environment, and Space, 2002, Hangzhou, China

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.

Citation Download Citation

Chuanhai Wang, Youfei Zheng, Wei Gao, James R. Slusser, and Douliang He "Responses of winter wheat growth and production under subambient UV-B irradiance", Proc. SPIE 4896, Ultraviolet Ground- and Space-based Measurements, Models, and Effects II, (1 July 2003); https://doi.org/10.1117/12.466172

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