| 聚乙二醇对萝卜种子活力与幼苗抗冷性的影响 |
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| 引用本文： | 李晓梅.聚乙二醇对萝卜种子活力与幼苗抗冷性的影响[J].中国农学通报,2010,26(13):183-186. |
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| 作者姓名： | 李晓梅 |
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| 作者单位： | 枣庄学院生命科学系,山东枣庄,277160 |
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| 摘 要： | 采用聚乙二醇（PEG-6000）浸种,研究其对萝卜种子活力和抗冷效应的影响。结果发现20%PEG明显促进萝卜种子发芽势、活力指数、发芽指数的提高。低温下，20%PEG处理明显提高幼苗叶片超氧化物歧化酶(SOD) 、过氧化物酶(POD)活性， 明显提高幼苗脯氨酸含量，明显降低丙二醛含量和相对电导率。20%PEG明显提高萝卜幼苗的抗冷能力。
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| 关 键 词： | 烟草 烟草 杂种优势 雄性不育 |
| 收稿时间： | 2010-02-04 |
| 修稿时间： | 2010-03-15 |
Effect of Polyethylene glycol on Seed Vigor and chilling Resistance of radish Seedlings |
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| Li Xiaomei.Effect of Polyethylene glycol on Seed Vigor and chilling Resistance of radish Seedlings[J].Chinese Agricultural Science Bulletin,2010,26(13):183-186. |
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| Authors: | Li Xiaomei |
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| Institution: | Li Xiaomei (Department of Biology Science, Zaozhuang University, Zaozhuang Shandong 277160) |
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| Abstract: | Polyethylene glycol （PEG-6000）was used to study the effect on seed vigor and chilling resistance of radish seedlings. The results showed that 20% PEG significantly enhanced germination potentiality, germination index, vigor index. Under Low temperature, 20% PEG treatment significantly increased the activity of superoxide dismutase （SOD）, the activity of peroxidase （POD）, improved proline content significantly , reduced malondialdehyde （MDA） content and relative electrical conductivity in leaves of radish seedlings. 20% PEG improved chilling resistance of radish seedlings. |
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| Keywords: | polyethylene glycolzz radishzz chilling resistancezz seedlingzz physiological characteristicszz |
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