山东长岛梨属植物资源分布及演化分析

为了探索我国梨属植物资源种类、分布及传播途径,本研究选择与陆地隔离的山东省长岛县为调查地域,对该地域梨属植物资源进行了实地调查和遗传分析。结果表明,长岛县梨属植物资源较为丰富,主要有杜梨、豆梨、沙梨等种类,变异类型较多,并发现一种特异类型;野生资源主要分布在山脊和半山腰,较为集中,且在小范围内能够发现多种资源类型。遗传分析结果显示,长岛梨属植物资源与邻近陆地资源关系较近。通过田间果实调查证实,鸟类吃食梨属植物,推定鸟类在梨属植物资源传播中可能充当一定的角色,这为进一步了解我国梨属植物的资源分布及演化提供了新的研究思路。

The Analysis of Distribution and Evolution of Genus Pyrus in Changdao, Shandong

In order to explore the genetic diversity, distribution and evolution of wild pear populations in China, Choice Changdao county in Shandong province as the investigation area, for isolated island, The plant resources of genus Pyrus to carry out the field survey and genetic analysis. The results showed that genus Pyrus resources were abundant in Changdao county, Mainly include Pyrus betulaefolia, Pyrus calleryana, Pyrus pyrifolia, etc , Among them, the mutation type is more, and found a specific type; Resources are mainly distributed in the ridge and halfway up the hill, and is relatively concentrated, on a small area could found many kinds of resource type; Genetic analysis showed that resources of genus Pyrus in island was close relationship with adjacent land resources. In addition, the plants of the genus Pyrus by the field investigation confirmed that the birds feeding pear fruit. Presumption based on the above, the birds in the dispersal of genus Pyrus resource may act as a role, in order to further understand the Chinese pear distribution and evolution provides a new research idea.