四种地被菊抗旱性研究
毕业论文关键词：地被菊；抗旱性；抗氧化酶
Drought resistance of four ground cover chrysanthemum
Abstract：This paper studies the drought resistance in the ground chrysanthemum,Four varieties ‘Yuhuajingui’, ‘Yuhuajinhua’, ‘Yuhuajinxing’, ‘Yuhualuoying’ were used in the studies.we determined the morphology of roots,the leaf superoxide dismutase (SOD),catalase (CAT) and ascorbate peroxidase (APX),and the content of membrane lipid malondialdehyde (MDA), chlorophyll content, soluble protein during the drought process, select the most suitable one(s) of ground cover chrysanthemum which can grown greatly in drought sutitation ShangHai area.The results showed that:Yuhuajingui and Yuhuajinhua both had a better perform. They have higher activities of SOD, CAT and APX, and the similar the content of chlorophyll and soluble protein and the total content are more than the others. Moreover, Yuhuajingui and Yuhuajinhua had a low content in membrane lipid malondialdehyde (MDA) than Yuhuajinxing.Yuhualuoying.
Key Words：Cover Chrysanthemum；drought resistance; antioxidant enzyme
目录
摘要 ii
Abstract ii
目录 iii
1 绪论 1
1.1 本论文的背景和意义 1
1.1.1 奉贤海湾地区气候和土壤条件 1
1.1.2 菊花背景简介 1
1.1.3 实验的菊品种 1
1.1.4 研究意义 1
1.2本研究的处理方法和实验进程 2
1.2.1 干旱处理方法 2
1.2.2 干旱处理的研究进展 2
1.3研究目的 2
2 材料和方法 2
2.1 实验材料 2
2.1.1 植物材料 2
2.1.2 实验药品 3
2.1.3 辅助材料 3
2.2 试验场地 3
2.3 实验设计和方法 3
2.3.1 实验准备 3
2.3.2 干旱及旱后管理 3
2.3.3 测量的指标 3
2.3.4 指标测定方法 4
2.3.5 实验数据收集 4
2.3.6 实验数据的统计分析和处理 5
3 结果与分析 5
3.1 抗旱性处理形态指标变化 5
3.1.1 干旱处理雨花金星形态变化 5
3.1.2 干旱处理雨花金华形态变化 5
3.1.3 干旱处理雨花金桂形态变化 6
3.1.4 干旱处理雨花落英形态变化 7
3.1.5 干旱处理地被菊叶片枯死情况 7
3.2 叶绿素含量变化 8
3.3 叶片保护酶活性的变化 8
3.3.1干旱胁迫对地被菊叶片SOD酶活性的影响 8
3.3.2干旱胁迫对地被菊叶片APX活性的影响 9