Abstract

We used a plastid ndhC-trnV intergenic spacer to reconstruct the genealogy of haplotypes and phylogenetic relationships of major taxonomic groups of the genus Rosa. We analyzed the data using the statistical parsimony, maximum likelihood, and NeighborNet approaches. According to our results, the majority of species may be subdivided into three groups roughly corresponding to the taxonomic sections Pimpinellifoliae, Rosa (former Cinnamomeae) and Synstylae + Chinenses + Gallicanae + Caninae. We assess their relationships as broadly paraphyletic, since the first group appears to be ancestral to the second and the third. The fourth group distanced from these three by many mutational steps consists of R. persica (subgenus Hulthemia) sequences. We argue that R. persica together with the North American R. minutifolia and R. stellata (section Minutifoliae) probably represent the only remnants of an ancient group of roses widely distributed in the Northern Hemisphere in the Oligocene. Two major lineages of the section Caninae arose independently from different ancestors belonging to Synstylae.

中文翻译：

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重建蔷薇科 (Rosa L.) 系统发育的单倍型网络方法

摘要

我们使用质体ndh C- trn V 基因间间隔区来重建蔷薇属主要分类群的单倍型谱系和系统发育关系。我们使用统计简约法、最大似然法和 NeighborNet 方法分析数据。根据我们的结果，大多数物种可分为三组，大致对应于分类学部分：Pimpinellifoliae、Rosa（以前的 Cinnamomeae）和 Synstylae + Chinenses + Gallicanae + Caninae。我们评估它们的关系为广泛的并系关系，因为第一组似乎是第二组和第三组的祖先。第四组通过许多突变步骤与这三组相距甚远，由R. persica（Hulthemia 亚属）序列组成。我们认为，R. persica与北美的R. minutifolia和R. stellata（Minutifoliae 部分）一起可能代表了渐新世北半球广泛分布的古老玫瑰群的唯一残余。犬亚科的两个主要谱系独立地起源于属于合柱亚科的不同祖先。