内蒙古扎兰屯地区西伯利亚杏种质资源的数量分类

Quantitative classification of germplasm resources of Armeniaca sibirica at Zhalantun region of Inner Mongolia

为给内蒙古扎兰屯地区的西伯利亚杏种质资源库构建和优良品种选育等工作提供科学依据,全面调查了该地区西伯利亚杏种质资源状况,采用主成分分析和Q型聚类分析的方法对其种质资源进行了数量分类。对西伯利亚杏数量性状和质量性状方面的38个指标进行主成分分析,共提取了累计贡献率达到77.30%的11个主成分,并利用主成分得分值对86株样木进行Q型聚类分析,将其划分为9类群。根据其聚类特征可将这9大类概括为:小果圆鼓核类、晚花类、大果扁圆核类、重瓣类、大叶类、小叶小果类、扁圆果扁圆核类、长叶长果类、扁宽果类,每一类群代表了西伯利亚杏的某些突出特征或综合特征。

In order to provide a scientific basis for germplasm bank building and fine variety breeding of Armeniaca sibirica at Zhalantun region of Inner Mongolia, germplasm resources status of A. sibirica was comprehensive investigated and analyzed in this region, by using principal component analysis and Q type cluster analysis. The results showed that, through principal component analysis of the 38 indicators of quantitative and qualitative traits of A. sibirica, 11 principal components were extracted whose cumulative contribution rate was 77.30%. Based on the scores of the principal components, the 86 sample trees were divided into 9 groups through Q type cluster analysis. Based on the cluster features, the 9 groups were small fruit and plump nutlet group, later flower group, big fruit and oblate nutlet group, multiplicate flower group, big leaf group, small leaf and small fruit group, oblate fruit and oblate nutlet group, long leaf and long fruit group, and broad flat fruit group. Each group represented some salient or comprehensive features of A. sibirica.