CSIRO Plant Industry, GPO Box 1600, Canberra, ACT 2601, Australia.
Am J Bot. 2009 Mar;96(3):668-85. doi: 10.3732/ajb.0800341. Epub 2009 Feb 12.
The breeding of new, high-quality citrus cultivars depends on dependable information about the relationships of taxa within the tribe Citreae; therefore, it is important to have a well-supported phylogeny of the relationships between species not only to advance breeding strategies, but also to advance conservation strategies for the wild taxa. The recent history of the systematics of Citrus (Rutaceae: Aurantioideae) and its allies, in the context of Rutaceae taxonomy as a whole, is reviewed. The most recent classification is tested using nine cpDNA sequence regions in representatives of all genera of the subfam. Aurantioideae (save Limnocitrus) and numerous species and hybrids referred to Citrus s.l. Aurantioideae are confirmed as monophyletic. Within Aurantioideae, tribe Clauseneae are not monophyletic unless Murraya s.s. and Merrillia are removed to Aurantieae. Within tribe Aurantieae, the three traditionally recognized subtribes are not monophyletic. Triphasiinae is not monophyletic unless Oxanthera is returned to Citrus (Citrinae). Balsamocitrinae is polyphyletic. Feroniella, traditionally considered allied closely to Limonia (=Feronia), is shown to be nested in Citrus. The proposed congenericity of Severinia and Atalantia is confirmed. The most recent circumscription of Citrus is strongly supported by this analysis, with hybrids appearing with their putative maternal parents. The genus was resolved into two clades, one comprising wild species from New Guinea, Australia, and New Caledonia (formerly Clymenia, Eremocitrus, Microcitrus, Oxanthera), but surprisingly also Citrus medica, traditionally believed to be native in India. The second clade is largely from the Asian mainland (including species formerly referred to Fortunella and Poncirus).
柑橘属新优质品种的培育依赖于有关该族内分类群关系的确切信息。因此，不仅要对物种之间的关系进行深入研究，以推进育种策略，还要对野生分类群进行保护策略，构建出可靠的系统发育关系。本文综述了柑橘属（芸香科：柑橘亚科）及其近缘属的系统发育历史，以及整个芸香科分类学背景下的柑橘属系统发育历史。利用所有柑橘亚科属的代表及众多柑橘属种和杂种的 9 个 cpDNA 序列区，对最新分类进行了检验，结果表明除了 Limnocitrus 外，所有的属都具有单系性。在柑橘亚科中，除非将 Murraya s.s. 和 Merrillia 归入 Aurantieae，否则 Clauseneae 族不具有单系性。在 Aurantieae 族中，传统上公认的三个亚族不具有单系性。Triphasiinae 除非将 Oxanthera 归入 Citrus（Citrinae），否则不具有单系性。Balsamocitrinae 是多系的。传统上被认为与 Limonia（=Feronia）密切相关的 Feroniella 被证明嵌套在 Citrus 中。Severinia 和 Atalantia 的近缘关系得到确认。本研究强烈支持最近提出的柑橘属分类概念，杂种与其推测的母本一同出现。该属分为两个分支，一个分支包括来自新几内亚、澳大利亚和新喀里多尼亚的野生种（以前归入 Clymenia、Eremocitrus、Microcitrus、Oxanthera），但令人惊讶的是还包括传统上认为原产于印度的 Citrus medica。第二个分支主要来自亚洲大陆（包括以前归入 Fortunella 和 Poncirus 的种）。
