摘要:采用SCoT分子标记技术,对来自于不同地域的18份苦蘵材料进行了种质资源遗传多样性分析,10个引物共扩增出了65条谱带,平均每个引物扩增出条带数为6.5条。其中多态性条带共有63条,平均每个引物的多态性条带就高达6.3条多态性条带,平均多态性条带百分比为97﹪,多态性丰富。不同的引物扩增出的DNA 的片段数也不尽相同,其中引物SCoT 5扩增出来的DNA片段数最多,达到了10条。而引物SCoT 13扩增出的DNA片段数最少,表明来自于不同地域生态环境的苦蘵材料存在一定的差异。另外,聚类分析结果发现来自于同一地域的苦蘵材料能聚为一类,实验表明,SCoT分子标记技术可以为苦蘵的种质资源遗传多样性分析和种质保护提供一定的理论依据。46711
毕业论文关键词 : 苦蘵; SCoT; 遗传多样性
Abstract: by using SCoT molecular marker technology, 18 samples of Physalis angulata materials from different areas was analyzed genetic persity of germplasm resources, A total of 10 primers amplified 65 bands on average, each primer could amplified 6.5 bands. Among the 18 tested materials for a total of 63 polymorphic bands, polymorphic bands accounted for 97%, highly polymorphic, the average polymorphic bands per primer is as high as 6.3. The number of fragments of different liquid primer amplified DNA not the same, the number of DNA fragments amplified by primer SCoT 5 most, reached 10. While the number of DNA fragments amplified by primer SCoT 13 at least, that there are some differences from different geographical environment of Physalis angulata, Physalis angulata materials from the same area could be clustered into one class, experimental results show that the SCoT molecular marker technology can provide certain theoretical basis for the genetic persity of germplasm resources of Physalis pubescens L analysis and Germplasm conservation.
Keywords: Physalis angulata; SCoT; genetic persity
目录
1 材料与方法 3
1.1 供试材料 3
1.2 方法 4
1.2.1 DNA提取方法 4
1.2.2 PCR扩增程序 4
1.2.3 琼脂糖电泳 5
1.2.4 引物 5
1.2.5 数据统计与分析 5
2 结果与分析 6
2.1 DNA检测电泳图(分光光度计检测数据) 6
2.2 SCoT标记多态性分析 6
2.3 遗传多样性分析 8
3 讨论 9
3.1 DNA提取 9
3.1.1 DNA的提取方法 9
3.1.2 造成DNA的样品不纯的主要原因 10
3.1.3 造成一定程度的DNA的降解的主要原因 10
3.1.4 DNA沉淀 10
3.1.5 若获得的沉淀无法完全溶解可能的原因 10
3.1.6 若获得的DNA浓度过低的主要原因