Karyotype and Flow Cytometry Analysis of the Natural Populations of Rosa beggeriana and Rosa laxa in Xinjiang, China

文献类型： 外文期刊

第一作者： Yang, S.

作者： Yang, S.;Han, Y. J.;Yang, S. H.;Ge, H.

作者机构：

关键词： karyotype;population;Rosa beggeriana;Rosa laxa;Xinjiang

期刊名称：VI INTERNATIONAL SYMPOSIUM ON THE TAXONOMY OF CULTIVATED PLANTS

ISSN： 0567-7572

年卷期： 2014 年 1035 卷

页码：

收录情况： SCI

摘要： As the typical local rose species in Xinjiang, R. beggeriana and R. laxa are highly similar in the morphology except that the sepals are deciduous in R. beggeriana while they are persistent in R. laxa after hips ripening. Both species had been applied to interspecific hybridization with modern rose cultivars for the introgressions of stress-resistances. In this study, R. beggeriana from three populations and R. laxa from four populations varied with different altitudes had been selected for ploidy and karyotype analysis. The results showed that the populations of R. beggeriana and R. laxa are diploid and tetraploid respectively. The karyotypes of seven populations of two species are all identified as the small chromosomes types, which belong to original, symmetric and '2A' types. Moreover, different karyotype diversity was found in the populations between R. beggeriana and R. laxa.

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