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| Crop growth, yield and quality as affected by ultraviolet-B (UV-B)radiation elevating |
| Received:January 09, 2020 |
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| KeyWord:elevated UV-B radiation;crop;growth;yield;quality |
| Author Name | Affiliation | | LOU Yun-sheng | Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 210044, China
Jiangsu Key Laboratory of Agricultural Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China | | ZHANG Zhen | Jiangsu Key Laboratory of Agricultural Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China | | WU Jun | Maoming Meteorological Bureau, Maoming 525000, China |
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| Abstract: |
| Elevated UV-B radiation on the ground surface due to ozone depletion in the stratosphere has become one of the important issues in global change. Elevated UV-B radiation depressed plant growth, with reduced tiller numbers and plant height, decreased leaf area and chlorophyll content, depressed PS Ⅱ and photosynthetic efficiency. Elevated UV-B radiation resulted in the imbalance of reactive oxygen metabolism, damage to the stomatal apparatus of the blade, the chloroplast structural deformation, and the disorder of the arrangement of GRANA lamellae. Elevated UV-B radiation reduced the number of effective panicles, grain number per ear, thousand-seed weight, and yield. The effect of elevated UV-B radiation on protein content in seed varied with crop types and cultivars. Further researches are needed to investigate the molecular mechanism of endogenous hormone metabolism in crops as affected by elevated UV-B radiation, crop model simulation at regional and global scales, interaction of elevated UV-B radiation with other environmental factors as well as its counter measures. |
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