互花米草和芦苇黄酮类物质含量比较研究
毕业论文关键词： 互花米草；芦苇；黄酮；生物入侵。
Comparison onflavonoids contents of Spartina alterniflora and Phragmites australis
Abstract：Since Spartina alterniflora introduced Chongming Dongtan Wetland. because of its adaptability, diffusion capacity and competitiveness,it has been distributed throughout a large area of tidal wetlands, indigenous plant salt marsh reeds and other growth and environment caused a tremendous impact. From the content of flavonoids in terms of Spartina alterniflora and native plants Phragmites australis Studies comparing various organs, to investigate the intrusion mechanism is important. First,leaves of Spartina alterniflora and Phragmites australis will be a sample. Find the optimum extraction conditions of flavonoids in Spartina alterniflora and Phragmites australis by reaction with NaNO2 and Al(NO3)3.Then Using rutin as standard，research the differences of the flavonoid content in the rhizome, stems, leaves of Spartina alterniflora and Phragmites australis in the January, March, July and October.The results showed that the optimum extraction conditions of flavonoids in Spartina alterniflora is alcohol concentration 70%,bath temperature 80℃ and bath time 1.5h. The optimum extraction conditions of flavonoids in Phragmites australis is alcohol concentration 80%,bath temperature 80℃ and bath time 1.5h. Flavonoids content in Spartina alterniflora is obviously higher than Phragmites australis’s. And the The annual average flavonoids content in Spartina alterniflora’s leaves is about 37.99%. In addition, Flavonoids may be one of the key factors in Spartina alterniflora’s invasion and inhibiting the growth of native plants. And it’s a direction of exploring the invasion mechanisms of Spartina alterniflora.
KeyWords：Spartina alterniflora；Phragmites australis；flavonoids；biological invasion
目 录
摘要 I
Abstract I
目录 III
1 引言 1
1.1 互花米草简介 1
1.1.1 互花米草的价值 1
1.1.2 互花米草的危害 2
1.1.3 互花米草在我国的分布 3
1.2 芦苇简介 3
1.3 黄酮类物质的作用 4
1.4 植物的根、茎、叶 4
1.5 互花米草国内外研究现状 5
1.6 选题依据 5
2 材料与方法 6
2.1 研究材料6
2.2 实验方法 6
2.2.1 测定两种植物总黄酮的最佳提取条件6
2.2.2 两种植物各个时期各器官的总黄酮测定 7
3 结果与分析 7
3.1 芦苇黄酮类物质的最佳提取条件7
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