| 不同玉米品种对增强UV-B辐射与干旱复合胁迫的生理响应 |
| |
| 引用本文： | 王芳,姬茜茹,邱宗波,岳明.不同玉米品种对增强UV-B辐射与干旱复合胁迫的生理响应[J].农业环境科学学报,2009,28(3). |
| |
| 作者姓名： | 王芳 姬茜茹 邱宗波 岳明 |
| |
| 作者单位： | 1. 西部资源生物与现代生物技术省部共建教育部重点实验室,西北大学,陕西西安,710069
2. 西部资源生物与现代生物技术省部共建教育部重点实验室,西北大学,陕西西安,710069;河南师范大学生命科学学院,河南,新乡,453007 |
| |
| 摘 要： | 模拟了平流层臭氧减少20%时辐射到地表的紫外线B(UV-B,280～315 nm)和水分胁迫(20%聚乙二醇PEG-6000处理),考察了温室培养的玉米幼苗叶片对于增强的UV-B辐射联合干旱条件的生理响应.结果表明,两胁迫因子UV-B辐射和干旱单独作用24h会导致玉米幼苗叶片渗透调节物脯氨酸和抗膜质过氧化系统(MDA,抗氧化酶SOD,CAT和APX)的变化.这种变化随玉米品种的抗旱性不同差异显著.在复合作用下,抗旱品种脯氨酸量显著增加,CAT和APX活性降低,受影响的程度并非单因子胁迫的加和,而是中和;单独胁迫对非抗旱品种造成的伤害在复合胁迫中加重,表现为叠加效应.结果证实抗旱品种确实也能抵御UV-B辐射的胁迫,并且调节渗透调节物和抗氧化酶削弱干旱造成的伤害,是抗旱品种更好适应环境的表现.
|
| 关 键 词： | UV-B辐射 干旱胁迫 复合胁迫 玉米品种 抗氧化系统 |
The Interactive Effects of Enhanced UV-B Irradiation and Water Deficit on Physiological Responses in Different Maize(Zea mays)Cultivars |
| |
| WANG Fang,JI Qian-ru,QIU Zong-bo,YUE Ming.The Interactive Effects of Enhanced UV-B Irradiation and Water Deficit on Physiological Responses in Different Maize(Zea mays)Cultivars[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2009,28(3). |
| |
| Authors: | WANG Fang JI Qian-ru QIU Zong-bo YUE Ming |
| |
| Abstract: | In the present paper, the physiological responses of maizes(Zea mays)seedling leaves to enhanced ultraviolet-B irradiation simulated a 20% stratospheric ozone depletion and drought stress produced by adding 25% polyethylene glycol(PEG-6000)alone or combined under greenhouse conditions were studied.The results showed that two different stress conditions led to changes of proline which was osmotic regulator and antioxidant system(MDA, antioxidant enzymes including SOD, CAT and APX).Feedbacks of two cultivars,... |
| |
| Keywords: | UV-B radiation water deficit combined stresses maize cultivar oxidant system |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《农业环境科学学报》浏览原始摘要信息 |
|
点击此处可从《农业环境科学学报》下载全文 |
|
