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当前位置: 首页 > 文章 > UV-B辐射增强及CO_2浓度升高对水稻产量及品质的影响 作物杂志 2015 (1) 138-142
Position: Home > Articles > Effects of Enhancing UV-B Radiation and Elevating Carbon Dioxide on Yield and Quality of Rice( Oryza sativa L. ) Crops 2015 (1) 138-142

UV-B辐射增强及CO_2浓度升高对水稻产量及品质的影响

作  者：
苗秀莲;刘传栋;郭彦;吕艳伟;吕志伟;张文会
单  位：
山东省生态学与生物多样性重点实验室;聊城大学生命科学学院
关键词：
UV-B辐射增强;CO2浓度升高;水稻;产量及品质
摘  要：
于2008年以日本粳稻品种Sasanishiki为研究材料,利用开放式气候室,以正常CO2浓度350±50mg/L和自然光照处理为对照,设置UV-B 14.7k J/(m2·d)、CO2700±50mg/L及CO2+UV-B复合3个处理,研究了CO2浓度升高及UV-B辐射增强对该品种水稻糙米产量及品质的影响。结果表明:(1)水稻单株产量CO2浓度升高处理增加21.78%,而千粒重、单株穗数、穗粒数及结实率无显著变化。结实率与单株产量UV-B辐射增强及复合处理分别降低6.44%、6.13%、14.89%、14.79%。千粒重复合处理降低5.28%。(2)CO2浓度升高及复合处理导致糙米的完整粒比率下降(29.54%~42.18%),断裂粒(29.73%~103.25%)和未成熟粒(30.71%~176.36%)的比率增加。UV-B胁迫下,未成熟粒比率增加幅度均小于CO2单独处理及复合处理。(3)UV-B辐射增强、CO2浓度升高及复合处理均显著增加脂肪酸含量(32.6%~76.29%)和蛋白质含量(5.3%~28.0%),而对水分和支链淀粉含量没有影响。综上所述,UV-B辐射增强显著抑制了水稻产量;CO2浓度升高显著增加水稻产量,但在本试验设计范围内,CO2浓度升高并未缓解UV-B辐射增强的抑制效应;UV-B辐射增强、CO2浓度升高及二者复合处理均显著改变了该品种稻米的营养品质。
译  名：
Effects of Enhancing UV-B Radiation and Elevating Carbon Dioxide on Yield and Quality of Rice( Oryza sativa L. )
作  者：
Miao Xiulian;Liu Chuandong;Guo Yan;Lü Yanwei;Lü Zhiwei;Zhang Wenhui;School of Life Sciences,Liaocheng University;Key Laboratory of Ecology and Biodiversity in Shandong Province;
关键词：
Enhanced UV-B radiation;;Elevated carbon dioxide;;Rice(Oryza sativa L.);;Yield and quality
摘  要：
The effects of elevated CO2 concentration 700 ± 50 mg / L,enhanced UV-B radiation 14. 7k J /( m2·d)and the combined treatments [700 ± 50 mg / L,14. 7k J /( m2·d) ]on yield and quality of Japanese japonica varieties Sasanishiki were observed in our study with an open climate chamber. The results showed that:( 1) Elevated CO2 concentration significantly increased the yield per plant( 21. 78%),but had no significant influence on thousand grain weight,panicles per plant,grains per plant and seed setting rate. The yield and seed setting rate were decreased by 6. 44% 、6. 13% 、14. 89% 、14. 79% under enhanced UV-B radiation and the combined treatments.Meanwhile,the combined treatments significantly reduced thousand seed weight;( 2) Elevated CO2 concentration and the combined treatments led to the decreases in the ratio of perfect kernel( 29. 54%- 42. 18%),and increases in ratio of broken kernel( 29. 73%- 103. 25%) and immature kernel( 30. 71%- 176. 36%). The broken kernel ratio and immature kernel ratio under enhanced UV-B stress were less than CO2 alone treatment and the combined treatments.( 3) Enhanced UV-B radiation,elevated CO2 concentration and the combined treatments significantly increased fatty acid content( 32. 6%- 76. 29%) and protein content( 5. 3%- 28. 0%),while had no effect on water and amylopectin content. In conclusion,enhanced UV-B radiation significantly inhibit the yield,and elevated CO2 concentration significantly increased the yield,but in this experiment,elevated CO2 concentration did not alleviate the inhibition effect of enhanced UV-B radiation; On the other hand,enhanced UV-B radiation,elevated CO2 concentration and the combined treatments all significantly changed the nutritional quality of this rice varieties.

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