白灵山红山茶叶绿体基因组特征分析

为解析白灵山红山茶(Camellia bailinshanica)叶绿体基因组的结构组成,判定其在山茶属中的进化位置及与其他山茶属叶绿体基因组的区别,为山茶属物种鉴定、遗传多样性分析和资源保护提供相关依据。使用新一代测序平台对白灵山红山茶叶绿体基因组进行测序,通过生物信息学分析方法进行序列组装、注释和特征分析,并利用相关软件对基因组结构和数目、密码子偏好性、序列重复、简单重复序列位点、边界和系统发育进行分析。白灵山红山茶叶绿体基因组大小为156943 bp,呈现四分体结构;共有134个基因,包含88个编码基因、37个t RNA基因、8个r RNA基因和1个假基因;密码子偏好性分析表明白灵山红山茶偏爱使用A/U结尾的密码子;通过长重复片段及SSR分析,检测到40个重复序列及243个SSR位点;白灵山红山茶与滇山茶边界分析中ycf1基因长度存在差异;系统发育分析发现,白灵山红山茶与峨眉红山茶和石果毛蕊山茶聚为一支,关系较密切。研究得到了白灵山红山茶的叶绿体基因组基本情况与系统发育位置,可为红山茶组分子标记开发、种间鉴定以及该物种的演化过程及分类学地位确定提供科学依据。

口传历史与图腾崇拜——攀枝花市白灵山地区傈僳族龙崇拜个案调查研究

文化自信的建立,其前提是必须要有文化,没有民族文化,就谈不上文化自信,所以要调查、研究,通过细致的工作,理清民族文化的根源和现实的存况。傈僳族是氐羌的一支在民族迁徙过程中形成的,由于没有文字,傈僳族的历史文化依靠口口相传得以延续。在傈僳族的口传的故事或祭祀经中,可以很清晰地解读出傈僳族有着祖先崇拜、葫芦崇拜等信息,而傈僳族祖先崇拜和葫芦崇拜,其本质就是龙图腾崇拜。白灵山地区及其周边地域傈僳族的葫芦笙文化、祭龙习俗、以及无处不在的"龙迹"等是傈僳族龙图腾崇拜的精神创造及民族特质的重要组成部分。

Population Distribution and Dynamics of Quercus liaotungensis, Fraxinus rhynchophylla and Acer mono in Dongling Mountain, Beijing

The spatial distribution and population dynamics of Quercus liaotungensis Koidz., Fraxinus rhynchophylla Hance and Acer mono Maxim. were studied in three warm temperate deciduous forests in Dongling Mountain, Beijing. Clumped distributions appeared in most seedlings (≤0.4 m), short saplings (0.4-1 m) and tall saplings (1-2 m). Random distributions appeared in adults of Q. liaotungensis in Plot 1, F. rhynchophylla in Plot 3. The LSD method was used to discern the differences of different aged population. The class distribution of Q. liaotungensis was nearly a reverse-J shape for Plot 1 and Plot 3, suggesting that the population regenerates continuously. The age-structures of F. rhynchophylla and A. mono in Plot 1 and the test results indicated that they would increase continuously. In Plot 2, the class distribution and the test results showed that all populations would not regenerate continuously.