| 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,(1):140~142 |
| 渗透胁迫对玉米幼苗叶片叶绿素含量及POD 活性的影响 |
| Effects of chlorophyll content and POD activity on osmosis stress at seedling stage of maize hybrids |
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| DOI：10.7606/j.issn.1000-7601.2007.01.29 |
| 中文关键词: 叶绿素含量 POD活性 萌芽 渗透胁迫 玉米 |
| 英文关键词:chlorophyll POD activity gemination osmosis stress maize |
| 基金项目:西北农林科技大学2003年青年科技专项基金(080807) |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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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