| 增强UV-B辐射和干旱对春小麦光合作用及其生长的影响 |
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| 引用本文： | 张莉娜,安黎哲,冯虎元.增强UV-B辐射和干旱对春小麦光合作用及其生长的影响[J].西北植物学报,2010,30(5). |
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| 作者姓名： | 张莉娜 安黎哲 冯虎元 |
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| 作者单位： | 1. 海南大学,材料与化工学院,海口,570228
2. 兰州大学,生命科学学院,兰州,730000 |
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| 基金项目： | 国家自然科学基金，教育部新世纪人才计划项目，高等学校博士点基金项目 |
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| 摘 要： | 在室外盆栽条件下研究了UV-B辐射和土壤干旱对春小麦 '和尚头'生长和光合作用的影响.结果显示:(1)干旱、UV-B辐射、干旱+UV-B(复合)处理均可使叶片类黄酮含量增加,且干旱+UV-B处理增加显著高于其他处理(P<0.05).UV-B辐射和干旱单独处理均能显著降低叶片光合色素含量,但UV-B辐射的副作用大于干旱,复合处理对光合色素的影响介于UV-B和干旱之间.(2)各处理间的光合速率日均值大小次序为:对照>UV-B+干旱>UV-B>干旱;增强UV-B对净光合速率的抑制作用大于干旱,而UV-B+干旱处理的抑制作用较二者单独处理有所减轻.(3)UV-B辐射和干旱单独处理后总生物量比对照减少15%,且抑制作用为:干旱>UV-B>复合处理; UV-B辐射和干旱胁迫不但影响春小麦的生物量,而且影响小穗特征和产量.研究表明,UV-B辐射和干旱之间存在交互作用,说明一种胁迫可以减缓(轻)另外一种胁迫对春小麦的抑制作用.
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| 关 键 词： | UV-B辐射 干旱 春小麦 光合作用 色素 产量 生物量 |
Effects of Enhanced UV-B Radiation and Soil Drought on Photosynthesis and Growth of Spring Wheat |
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| ZHANG Li-na,AN Li-zhe,FENG Hu-yuan.Effects of Enhanced UV-B Radiation and Soil Drought on Photosynthesis and Growth of Spring Wheat[J].Acta Botanica Boreali-Occidentalia Sinica,2010,30(5). |
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| Authors: | ZHANG Li-na AN Li-zhe FENG Hu-yuan |
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| Institution: | ZHANG Li-na1,AN Li-zhe2,FENG Hu-yuan2(1 School of Material and Chemical Engineering,Hainan University,Haikou 570228,China,2 School of Life Sciences,Lanzhou University,Lanzhou 730000,China) |
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| Abstract: | The effects of enhanced UV-B radiation and soil drought on pigments contents,photosynthesis,biomass and yield of spring wheat were investigated under the field condition of pot cultivation.The radiation or drought,simply or combination,led to the decrease in foliar flavonoid content,but only there is statistically significant under the condition of the combination.Both stresses caused the reduction of chlorophyll a,chlorophyll b and carotenoids.Compared with water stress,the UV-B radiation had stronger role... |
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| Keywords: | ultraviolet-B radiation drought spring wheat photosynthesis pigments yield biomass |
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