| UV-B辐射增强对不同品种花生结荚期生理特性日变化的影响 |
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| 引用本文： | 韩艳,鲁建立,韩晨光,胡程达,崔荣华.UV-B辐射增强对不同品种花生结荚期生理特性日变化的影响[J].南京气象学院学报,2018,10(2):218-224. |
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| 作者姓名： | 韩艳 鲁建立 韩晨光 胡程达 崔荣华 |
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| 作者单位： | 河南大学 环境与规划学院, 开封, 475004;南京信息工程大学 应用气象学院, 南京, 210044,中国气象局/河南省农业气象保障与应用技术重点开放实验室, 郑州, 450003,河南大学 环境与规划学院, 开封, 475004,中国气象局/河南省农业气象保障与应用技术重点开放实验室, 郑州, 450003,河南大学 环境与规划学院, 开封, 475004 |
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| 基金项目： | 河南省教育厅科学技术研究重点项目（14A170001）；中国气象局／河南省农业气象保障与应用技术重点开放实验室科学研究基金（AMF201602）；河南省高校科技创新团队支持计划（16IRTSTHN012） |
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| 摘 要： | 以3个花生品种（开农49号、64号和69号）为材料，通过大田模拟试验，研究UV-B辐射增强对花生结荚期叶片的净光合速率（Pn）、气孔导度（Gs）、胞间CO2浓度（Ci）、蒸腾速率（Tr）和水分利用效率（Ewu）日变化的影响，为筛选高产、抗旱、抗UV-B辐射花生品种提供依据.UV-B辐射设2个水平即自然光（CK，1.5 kJ·m-2）和UV-B增强20%（T，1.8 kJ·m-2）.结果表明，UV-B辐射增强明显抑制花生的光合作用和蒸腾作用，与对照相比，UV-B增强条件下，开农49号、64号和69号Pn日均值分别降低19.4%、27.8%、24.7%；Gs日均值降低26.7%、42.9%、28.6%；Ci日均值降低27.2%、20.4%、23.1%；Tr日均值降低17.8%、23.3%、25.1%；Ewu日均值降低16.6%、23.2%、23.9%.UV-B辐射增强对3个品种生长都具有抑制效应，但品种间存在一定的敏感性差异，其中开农49号最不敏感，因此，开农49号在抗UV-B辐射方面比其他2个品种具有更大的优势.
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| 关 键 词： | UV-B辐射 花生 品种 生理特性 日变化 |
| 收稿时间： | 2016/10/21 0:00:00 |
Effects of enhanced UV-B radiation on diurnal variations of physiological characteristics of different cultivars of peanut at fruiting stage |
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| HAN Yan,LU Jianli,HAN Chenguang,HU Chengda and CUI Ronghua.Effects of enhanced UV-B radiation on diurnal variations of physiological characteristics of different cultivars of peanut at fruiting stage[J].Journal of Nanjing Institute of Meteorology,2018,10(2):218-224. |
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| Authors: | HAN Yan LU Jianli HAN Chenguang HU Chengda and CUI Ronghua |
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| Institution: | College of Environment and Planning, Henan University, Kaifeng 475004;School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044,Key Laboratory of Agrometeorological Safeguard and Applied Technique, China Meteorological Administration, Zhengzhou 450003,College of Environment and Planning, Henan University, Kaifeng 475004,Key Laboratory of Agrometeorological Safeguard and Applied Technique, China Meteorological Administration, Zhengzhou 450003 and College of Environment and Planning, Henan University, Kaifeng 475004 |
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| Abstract: | A field experiment was conducted to investigate the effects of enhanced UV-B radiation on diurnal variations of net photosynthetic rate (Pn), stomata conductance (Gs), intercellular CO2 concentration(Ci), transpiration rate (Tr), and water use efficiency (Ewu) of peanut leaves at fruiting stage of different peanuts cultivars, so as to provide a basis for screening out high-yield, drought-resistant and UV-B-radiation-resistant peanut varieties.The experiment was designed with two levels of UV-B radiation, natural light (CK) and enhanced UV-B radiation by 20% (E).The results showed that enhanced UV-B radiation inhibit photosynthesis and transpiration of peanuts significantly.The daily average Pn of KaiNong No.49, 64, and 69 declined by 19.4%, 27.8%, and 24.7%, respectively;the daily average Gs decreased by 26.7%, 42.9%, and 28.6%, respectively.Besides, the daily average Ci of KaiNong No.49, 64, and 69 declined by 27.2%, 20.4%, and 23.1%, respectively, and the Tr decreased by 17.8%, 23.3%, and 25.1% respectively.Furthermore, the Ewu reduced by 16.6%, 23.2%, and 23.9% for KaiNong No 49, 64, and 69, respectively.These results indicate that enhanced ultraviolet-B radiation have a restraint effect on these three cultivars, but sensibility differences exist among these peanuts cultivars.Therein, KaiNong No.49 is the least sensitive peanuts cultivar.Therefore, compared with the other two cultivars, KaiNong No.49 shows great advantages in regard to UV-B radio-resistance. |
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| Keywords: | UV-B radiation peanut cultivar physiological characteristics diurnal variations |
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