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首页> 外文期刊>Genetic Resources and Crop Evolution >Cytological and RAPD data revealed genetic relationships among nine selected populations of the wild bramble species, Rubus parvifolius and R. coreanus (Rosaceae)
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Cytological and RAPD data revealed genetic relationships among nine selected populations of the wild bramble species, Rubus parvifolius and R. coreanus (Rosaceae)

机译：细胞学和RAPD数据揭示了九种野生荆棘物种，悬钩子悬钩子和蔷薇科（蔷薇科）的种群之间的遗传关系。

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摘要

Rubus parvifolius L. and R. coreanus Miq. are the two morphologically distinct, endemic wild brambles in East Asia that may be useful in raspberry breeding and cultivar development. In this study, genetic relationships among a total of nine populations of these two species, collected from Sichuan Province in southwestern China, were investigated by cytological and RAPD analyzing. With the exception of ploidy levels, R. parvifolius and R. coreanus had similar cytological features. Six R. parvifolius populations included diploids, triploid, tetraploid, and mixed diploid-tetraploid cytotype plants; among them, the population that produced the fewest seeds was the triploid, while the three R. coreanus populations were all diploid. But obvious genetic differentiation between R. parvifolius and R. coreanus was revealed by RAPD markers, the Euclidean's GS coefficient generated by UPGMA cluster analysis between R. parvifolius and R. coreanus was only 0.442, about half of that observed within species. Both genetic relationships among these populations and the origin of polyploidy in R. parvifolius populations are also discussed.
机译：Rubus parvifolius L.和R. coreanus Miq。是东亚的两种形态独特的地方性野生荆棘，可用于覆盆子育种和品种开发。在这项研究中，通过细胞学和RAPD分析，调查了从中国西南部四川省采集的这两个物种的总共九个种群之间的遗传关系。除倍性水平外，小叶红景天和Coreanus的细胞学特征相似。六个小叶红螺菌种群包括二倍体，三倍体，四倍体和混合的二倍体-四倍体细胞型植物。其中，种子最少的种群是三倍体，而三个R. coreanus种群都是二倍体。但是，RAPD标记揭示了细小红景天和纤毛红景天之间明显的遗传分化，通过UPGMA聚类分析得出的欧几里德的GS系数仅为小42红和小果红景天的0.442，大约是物种内部观察到的一半。还讨论了这些种群之间的遗传关系以及小叶红螺种群的多倍体起源。

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