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期 刊 ：植物遗传资源学报 2012年 13卷 1期

关键词：燕麦；种质收集；重复；多样性；冗余性；

Keywords:Avena, Germplasm resources, Duplicates, Diversity, Redundancy,

摘 要 ：有效鉴别种质收集材料中的重复对提高种质保存效率具有重要意义。本研究试图从青海省四个县收集的60份燕麦样本中鉴别可能的重复材料，为编目和入库保存提供依据。通过名称与来源分析、形态变异性与相似性评价、以及分子标记遗传多样性与冗余性鉴定，初步认为这些材料的来源不同，特性明显，遗传多样性丰富，具有一定的保存和利用潜力。但从中也发现同名材料较多，个别材料间遗传相似性较高，存在一定遗传冗余性，并鉴别出可能的重复材料，如白燕麦（1083）与白燕麦（1093）、燕麦（1225）与大燕麦（1226）等。本研究对资源工作者有效鉴别种质收集品中的重复材料、提高保种效率具有参考价值。

Abstract:Effective identification of duplicates in germplasm collections will be important for improving the efficiency of the conservation. This study was to identify possible duplicates from 60 samples of oat germplasm newly collected in four counties of Qinghai province in order to determining the accessions for cataloguing and conservation. By analyzing the names and the sources of the collections, evaluating the variation and similarity of morphological traits, and assessing genetic diversity and redundancy with molecular markers, it showed that these oat collections had different sources, unique characteristics and high genetic diversity, with high potential for conservation and use. However, it was found that many samples have the same names and some samples have high genetic similarity. Therefore, there might be genetic redundancy in the collections and a few possible duplicates were identified, i.e. “White Oat (1083)” vs. “White Oat (1093)”, “Oat (1225)” vs. “Large Oat (1226)”. This study will be a useful reference for germplasm curators to effectively identify duplicates and improve the conservation efficiency.

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