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首页> 外文期刊>Theoretical and Applied Genetics: International Journal of Breeding Research and Cell Genetics >Molecular phylogeny of the genus Asparagus (Asparagaceae) explains interspecific crossability between the garden asparagus (A. officinalis) and other Asparagus species.
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Molecular phylogeny of the genus Asparagus (Asparagaceae) explains interspecific crossability between the garden asparagus (A. officinalis) and other Asparagus species.

机译：芦笋属（芦笋科）的分子系统发育解释了花园芦笋（ officinalis ）和其他芦笋种之间的种间可交叉性。

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摘要

The genus Asparagus comprises approximately 200 species, some of which are commercially cultivated, such as the garden asparagus (A. officinalis). Many Asparagus species, including A. officinalis, are dioecious and have been grouped into a subgenus distinct from that of hermaphroditic species. Although many interspecific crossings have been attempted to introduce useful traits into A. officinalis, only some of the dioecious species were found to be cross-compatible with A. officinalis. Here, molecular phylogenetic analyses were conducted to determine whether interspecific crossability is proportional to the genetic distance between the crossing pairs and to further clarify the evolutionary history of the Asparagus genus. A clade with all cross-compatible species and no cross-incompatible species was recovered in the phylogenetic tree based on analyses of non-coding cpDNA regions. In addition, a sex-linked marker developed for A. officinalis amplified a male-specific region in all cross-compatible species. The phylogenetic analyses also provided some insights about the evolutionary history of Asparagus; for example, by indicating that the genus had its origin in southern Africa, subsequently spreading throughout the old world through intensive speciation and dispersal. The results also suggest that dioecious species were derived from a single evolutionary transition from hermaphroditism in Asparagus. These findings not only contribute towards the understanding of the evolutionary history of the genus but may also facilitate future interspecific hybridization programs involving Asparagus species.Digital Object Identifier http://dx.doi.org/10.1007/s00122-011-1709-2
机译：芦笋属包括大约200种，其中一些是商业种植的，例如花园芦笋（A. officinalis ）。许多芦笋种类，包括 A。药用植物，雌雄异体，被分为与雌雄同体物种不同的亚属。尽管已经尝试了许多种间杂交以将有用的性状引入A。药用，仅发现某些雌雄异体的物种与 A具有交叉相容性。药用。在这里，进行了分子系统发育分析，以确定种间可杂交性是否与杂交对之间的遗传距离成正比，并进一步阐明芦笋属的进化历史。根据非编码cpDNA区域的分析，在系统发育树中回收了具有所有交叉兼容物种而没有交叉不兼容物种的进化枝。另外，针对iA开发了性相关标记。厚朴在所有交叉兼容物种中扩增了一个雄性特异性区域。系统发育分析还为芦笋的进化史提供了一些见识。例如，通过指出该属起源于南部非洲，随后通过密集的物种形成和传播而传播到整个旧世界。研究结果还表明，雌雄异体物种来自芦笋中雌雄同体的单个进化过渡。这些发现不仅有助于了解该属的进化史，而且还可以促进将来涉及芦笋种的种间杂交程序。数字对象标识符http://dx.doi.org/10.1007/s00122 -011-1709-2

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