褪黑素对机插水卷苗植伤修复效应及其机理
毕业论文关键词：褪黑素；水卷苗；植伤修复；抗氧化系统
The repair effect and mechanism of melatonin on Long-Mat seedlings
Abstract：Long-Mat seedlings machine transplanting seedling as a new transplanting seedling technology, which has the advantages of light in weight, saving cost, high efficiency, seedling age elastic and root set high. However, because of the transplanting seedling and transplanting machine produced larger plant injury, causing long period of seedling establisment,be bad to taking root and finally affect rice prodution. Melatonin is widely existent Anti-Oxidants in higher plants. In this paper, the transplanting seedlings as the research object, based on full automatic light incubator. Transplanting seeedlings is replaced by artificial root cutting treatment, to study on different concentration of melatonin treatment under tranplanting seedlings. It shows that the medium concentration of melaonin can reduce the plant height, promote the root activity and vigor, increase the contents of chlorophy l. In addition, It can enhance the activity of both enzymatic and nonenzymatic antioxidant system such as CAT、SOD、POD、GR and APX, in order to speed up eliminating active oxygen and MAD, which repairs the injury of the Long-Mat seedlings and turn green quickly after transplanted. Key words: Melatonin；Long-Mat seedlings；Planting Injury Repair；Antioxidant System
目录
摘要 1
关键词 · 1
Abstract · 1
Key words 1
1 材料与方法 2
1．1 实验材料与试验地点 2
1．2 试验设计 · 2
1．3 项目测定和方法 2
1．3. 1 形态指标的测定 · 2
1．3. 2 叶绿素含量的测定 3
1．3. 3 可溶性蛋白的测定 3
1．3. 4 丙二醛（MDA）含量的测定 4
1．3. 5 抗氧化酶活力的测定 · 4
1．3 数据分析 · 5
2 结果与分析 5
2．1 褪黑素对机插水卷苗形态指标的影响 5
2．1．1 褪黑素对机插水卷苗株高的影响 5
2．1．2 褪黑素对机插水卷苗茎粗的影响 5
2．1．3 褪黑素对机插水卷苗根数的影响 6
2．1．4 褪黑素对机插水卷苗根系活力的影响 6
2．1．5 褪黑素对机插水卷苗叶绿素含量的影响 · 7
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