| 渗透胁迫对玉米幼苗叶片叶绿素含量及POD活性的影响 |
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| 引用本文： | 李得孝,崔黎艳,陈耀锋.渗透胁迫对玉米幼苗叶片叶绿素含量及POD活性的影响[J].干旱地区农业研究,2007,25(1):140-142. |
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| 作者姓名： | 李得孝 崔黎艳 陈耀锋 |
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| 作者单位： | 西北农林科技大学农学院,陕西,杨凌,712100;西北农林科技大学农学院,陕西,杨凌,712100;西北农林科技大学农学院,陕西,杨凌,712100 |
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| 基金项目： | 西北农林科技大学校科研和教改项目 |
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| 摘 要： | 利用PEG高渗溶液模拟干旱,将8个商用玉米杂交种在渗透胁迫条件下萌发,研究渗透胁迫对萌芽率、叶绿素含量和POD活性的影响.结果显示,品种间由萌芽数计算的耐旱系数差异显著,硬粒型萌芽性能优于马齿型,萌芽期PEG处理的幼苗叶绿素含量较高;正常萌发的玉米幼苗品种间叶片POD活性不一,渗透胁迫后POD活性皆增加,但品种间增幅差异较大.
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| 关 键 词： | 叶绿素含量 POD活性 萌芽 渗透胁迫 玉米 |
| 文章编号： | 1000-7601（2007）01-0140-03 |
| 修稿时间： | 2006-03-13 |
Effects of chlorophyll content and POD activity on osmosis stress at seedling stage of maize hybrids |
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| LI De-xiao,CUI Li-yan,CHEN Yao-feng.Effects of chlorophyll content and POD activity on osmosis stress at seedling stage of maize hybrids[J].Agricultural Research in the Arid Areas,2007,25(1):140-142. |
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| Authors: | LI De-xiao CUI Li-yan CHEN Yao-feng |
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| Abstract: | Drought-tolerance at the seedling stage affects seriously germination of seeds and survival of young plants.Using 25% polyethyleneglycol(PEG) solution,germinated seed number,chlorophyll content and seedling-stage peroxide(POD) activity of 8 maize hybrids varieties were tested.The results showed that drought-tolerance coefficients,caculated from germinated seed number,were siginificantly different among hybrids,and germination ability of flinty kernels were better than that of dented ones;that chlorophyll content of seedling leaves increased differently after selection for seed gemination in the PEG solution;and that leaf POD activities were different in check treatments and increased after osmosis stress treatments,but degrees of increase were different among the hybrid varieties. |
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| Keywords: | chlorophyll POD activity gemination osmosis stress maize |
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