Essential to plant conservation practice of the 植物保护中心 is taking action that will benefit species’ survival and reduce the extinction risk of globally and/or regionally rare plant species. CPC participating institutions make conservation 集合s for this purpose. 使其价值最大化, 文物收藏馆有准确的出处记录, 差异化的产妇行, 以及物种的多样遗传表征. But how do you know the best way to capture a diverse genetic representation when collecting? 你如何保持高的遗传多样性 非原位 集合? 创造新种群的最佳基因组成是什么? Below we provide guidelines based upon best available scientific evidence.
Genetic diversity is the basis for any species’ ability to cope with changes in its environment, 包括疾病, 压力, 或极端事件. 一种聚会的心态, 维护, and using the maximum diversity possible drives the following recommendations. Many recommendations ensure that in the absence of genetic data practitioners can collect and maintain the maximum level of genetic diversity. 获得更多爱赢平台app目标物种生物学的信息, 生态, 和遗传学, 基因取样和管理将更加准确. It is our hope that these guidelines will help practitioners make good decisions. 对于特别小的人群, 现有的遗传多样性可能是有限的, therefore maximizing the diversity of the conservation 集合 and of the reintroduction or conservation translocation is very important.
许多因素影响一个保护收藏的遗传完整性. Collectors who attempt to capture the breadth of genetic diversity represented within a population and the genetic diversity across populations will improve the likelihood of success for all conservation steps that follow. 不过, collectors should be aware of the possibility that genetic erosion may occur over time in their 集合s and take steps to minimize it. While in storage, some maternal lines may survive better than others, 因此，多样性可能会减少. 类似的, 当种子或组织从贮藏中再生时, 发芽和/或存活可能存在差异, 因此，多样性可能会减少. 一路走来，每一步都有磨耗, the number of individuals available for a reintroduction will likely be less than the original wild 集合. Planning for these losses is an essential component for genetic management of your conservation 集合.
These updated guidelines incorporate research and experience of CPC conservation officers, 以前的党的路线方针, 植物保护中心 Genetic Sampling Guidelines for Conservation Collections of Endangered Plants (植物保护中心1991)，和 Revised Sampling Guidelines for Conservation Collections of Rare and Endangered Plants (Guerrant et al. 2004b)，以及当前的文献. Key research on the threats of inbreeding versus outbreeding depression and concerns about genetic rescue informed these guidelines (Frankham et al. 2011; Frankham 2015), as well as serious thought about how changing climate will influence rare plant populations (Havens et al. 2015, Vitt等人. 2016). New genetic techniques are revolutionizing our abilities to examine genetic links to 生态 and evolution of species (Ellegren and Galtier 2016). These in turn may offer solutions to difficult problems rare plants face.