北欧国家第一次小规模种植马铃薯始于大约300年前,后来成为该地区重要的主食。有组织的保护工作始于1980年代,而今天,马铃薯地方品种,改良品种,和育种系保存在北欧遗传资源中心(NordGen)的基因库中,瑞典,挪威遗传资源中心(NGS)挪威,以及北欧国家的马铃薯育种公司。所有这些收藏品都包含各种各样的基因型,具有整个地区的本地名称和本地生长历史。然而,重复的存在,不一致的命名导致了混乱。
■在这项研究中,已用62个微卫星(SSR)标记对198种栽培马铃薯(SolanumtuberosumL.)进行了基因分型。分析的种质来自三个集合:来自Vandel丹麦马铃薯育种基金会(LKF-Vandel)的43个种质,90来自NordGen和65来自NGS。
遗传分析揭示了140个独特的马铃薯基因型和31个重复组/簇,其中大多数包含重复的对和其他三到十个种质。几个具有不同名称的种质在基因上相同或非常相似,暗示历史分享,和种薯的区域分布,导致不同地方名称的出现。此外,发现许多早期马铃薯育种的改良品种具有被认为是北欧地方品种的重复品种。此外,名称相同但源自不同收藏的马铃薯种质被确认为重复。这些发现已经影响了管理决策,并将进一步改善北欧马铃薯收藏的管理实践。此外,这些新知识将有利于北欧马铃薯育种工作,并允许向其他马铃薯多样性用户传播更准确的信息。
UNASSIGNED: The first small scale cultivation of potatoes in the Nordic countries began roughly 300 years ago, and later became an important staple food in the region. Organized conservation efforts began in the 1980s, and today, potato landraces, improved varieties, and breeding lines are conserved in genebanks at the Nordic Genetic Resource Center (NordGen), Sweden, and the Norwegian Genetic Resource Centre (NGS), Norway, as well as at potato breeding companies across Nordic countries. All these collections house a diverse array of genotypes with local names and local growing histories from the whole region. However, the presence of duplicates, and inconsistent naming has led to confusion.
UNASSIGNED: In this study, 198 accessions of cultivated potato (Solanum tuberosum L.) have been genotyped with 62 microsatellite (SSR) markers. The analyzed accessions came from three collections: 43 accessions from the Danish Potato Breeding Foundation in Vandel (LKF-Vandel), 90 from NordGen and 65 from NGS.
UNASSIGNED: The genetic analysis revealed 140 unique potato genotypes and 31 groups/clusters of duplicates, most of which contained duplicate pairs and the others three to ten accessions. Several accessions with distinct names were genetically identical or very similar, suggesting historical sharing, and regional distribution of seed potatoes, leading to the emergence of diverse local names. Moreover, many improved varieties from early potato breeding were revealed to have duplicates that have been considered Nordic landraces. Furthermore, potato accessions with identical names but originating from different collections were confirmed to be duplicates. These findings have already influenced management decisions and will further improve management practices for Nordic potato collections. Additionally, this new knowledge will benefit Nordic potato breeding efforts and allow for the dissemination of more accurate information to other users of potato diversity.