Study of a germplasm collection of loquat (Eriobotrya japonica Lindl.) by multivariate analysis
Study of a germplasm collection of loquat (Eriobotrya japonica Lindl.) by multivariate analysis
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DOI：
10.1007/s10722-007-9276-8
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发表时间：
2008-08-01
影响因子：
2
通讯作者：
Badenes, Maria L.
中科院分区：
文献类型：
--
作者：
Martinez-Calvo, Jose;Gisbert, Ana Delia;Badenes, Maria L.
枇杷（Eriobotrya japonica Lindl.）原产于中国，后传入日本。然而，欧洲的引进要晚得多，在18世纪，它被作为一种观赏树木引入。从那时起，该物种就很好地适应了地中海气候，主要分布在西班牙东南部，那里占欧洲作物总产量的50%以上。一个题为“保护、评价和收集未充分利用的水果物种”的欧洲项目支持在地中海盆地国家调查和收集这些物种的植物材料。其中一项调查结果是在西班牙瓦伦西亚IVIA建立枇杷种质收集。这个收藏正在扩展与世界各地收集的新作品，目前收藏有123个作品正在研究中。种质资源管理首先需要对引进的植物材料进行鉴定，其次需要对种质资源进行多样性研究，指出变异模式，建立具有相似性状和最显著变量的种质资源群体。这些结果允许组织收集到的信息以供进一步使用。本文以62份IVIA种质资源为研究对象。收集43个变量的结果，并对数据进行多变量分析。分析允许用包含大部分信息的新变量总结数据表。这些结果以及未来几年获得的结果将允许定义核收集（包含收集中所有变异性的最小加入数量）。
Loquat species (Eriobotrya japonica Lindl.) originated in China, later was introduced in Japan. However, introduction in Europe occurred much later, in 18th century, it was introduced as an ornamental tree. Since then, the species was very well adapted to the Mediterranean climate, mainly in South East of Spain, where is located more than 50% of total European crop production. A European Project titled 'Conservation, evaluation and collection of underutilized fruit species' supported surveys and collection of plant material from these species in the Mediterranean basin countries. One of these surveys resulted in a germplasm collection of loquat established at IVIA, Valencia, Spain. This collection is being extended with new accessions collected across the world, currently the collection have 123 accessions under study. Germplasm management needs first a characterization of the plant material introduced and second diversity studies into the collection that could point out the variability pattern, to establish groups of accessions with similar traits and the most significant variables. These results allow organizing the information gathered for further uses. In this paper, 62 accessions from the IVIA germplasm collection were studied. Results from 43 variables were gathered and data studied by multivariate analysis. The analysis allowed summarizing the data tables with new variables containing most of the information. These results along with those obtained in the coming years will allow define a nuclear collection (minimum number of accessions that contained all the variability present in the collection).