摘要
【目的】探讨仁用杏种质资源的起源和分类问题。【方法】通过调查22份仁用杏、6份山杏(Armeniaca sibirica Lam.)和5份普通杏(A.vulgaris Lam.)叶片和果实的38个形态指标,评价3种不同类型间杏种质资源的定性和定量性状差异,并对这些种质材料进行了基于形态性状的聚类分析。【结果】在定性分级性状上,仁用杏品种变异类型较多,且多介于山杏与普通杏中间。但是,大部分仁用杏的核尖性状等特征明显不同于其他类型。在数量性状上,仁用杏的果核体积明显大于鲜食普通杏和山杏。聚类分析表明,遗传距离在7.2时,可以将这些杏材料划分为6个类群,大部分仁用杏被聚在第II类群。当遗传距离在6.6和5.4时,他们又进一步划分成不同的组群。【结论】通过仁用杏的形态变异分析,认为仁用杏种质资源的变异类型丰富,且存在着3种不同类型的起源。按照它们的起源类型,可将仁用杏划归到普通杏、山杏或华仁杏(A.cathayana)等不同的分类群中。
【Objective】To evaluate the genetic diversity of kernel-using apricot and to reveal the ancestryand classification based on morphological variation.【Methods】A collection of 22 kernel-using cultivars,6 Armeniaca sibirica Lam.,and 5 Armeniaca vulgaris Lam. were investigated and the several morphologi-cal characteristics of leaf and fruit were measured in this study. The cluster dendrogram was obtained bysimilarity coefficient using UPGMA and Euclidean distance based on qualitative character and quantitycharacter.【Results】On qualitative character,the variation types were rich in the kernel-using cultivars,and were mostly between A. sibirica and A. vulgaris. The stone tip of the most kernel-using cultivars wassignificantly different from that of other types,and the stone size of the kernel-using was bigger than thatof common apricot and Siberian apricot. The cluster analysis showed that the measured cultivars wereclusted into 6 groups at 7.2 genetic distance level,and the cluster II were further divided into differentgroups.【Conclusion】From the analysis of the morphological variation,the results suggested that varia-tion types were abundant in kernel-using apricot which had three different ancestries. According to thedifferent types of ancestry,the kernel-using cultivations or strains were assigned to A. sibirica group,A.vulgaris group or A. cathayana group.
出处
《果树学报》
CAS
CSCD
北大核心
2015年第3期385-392,共8页
Journal of Fruit Science
基金
国家自然科学基金项目(31401826)
辽宁省农业领域青年科技创新人才培养计划(2014029)
关键词
仁用杏
普通杏
山杏
形态变异
分类
Kernel-using apricot
Armeniaca vulgaris Lam.
Armeniaca sibirica Lam.
Morphological variation
Classification
