文献类型： 外文期刊
作者： Dong, Y. H. 1 ; Liu, M. J. 1 ; Li, D. K. 3 ; Zhao, Y. B. 3 ; Peng, J. Y. 1 ; Liu, P. 1 ;
作者机构： 1.Agr Univ Hebei, Res Ctr Chinese Jujube, Baoding, Peoples R China
2.Sci & Technol Dept Hebei Prov, Shijiazhuang, Hebei, Peoples R China
3.Shanxi Acad Agr Sci, Pomol Inst, Taigu, Peoples R China
关键词： Ziziphus jujuba Mill.;botanical characters;agronomic characters;clustering analysis;core collection construction
期刊名称：I INTERNATIONAL JUJUBE SYMPOSIUM
ISSN： 0567-7572
年卷期： 2009 年 840 卷
页码：
收录情况： SCI
摘要： The data on the botanical and agronomic characters of 170 representative cultivars collected from all over China and conserved in National Repository of Chinese Jujube, Pomology Institute of Shanxi Academy of Agricultural Sciences were systematically analyzed. Based on 15 quantitative and 11 qualitative characters, the 170 cultivars were clustered by using Ward's method and Flexible UPGMA method. Eight primary core collections were established with sampling proportion of 10, 20, 30 and 40% using sampling method of combination of grouping and preference of particularity. Conformities of means, standard deviations, ranges of quantitative characters and the ratios of reserving phenotypes of qualitative characters between core collections and original germplasms were studied. The results showed that the core collection established combining clustering method of Ward's and sampling proportion of 20%, preserved 90.8% genetic background and 91.7% phenotype of qualitative characters. Some other 6 special cultivars such as the unique triploid 'Zanhuangdazao', 'Chahuzao' with teapot-shape fruits were added into the primary core collection. Finally, a core collection including 39 cultivars was established, which preserved more than 91% genetic background and all the phenotype of qualitative characters of original germplasms.
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