矮牵牛属（茄科）的分子系统发育分析。
Molecular phylogenetic analysis of Petunia Juss. (Solanaceae).
作者信息
Kulcheski Franceli R, Muschner Valéria C, Lorenz-Lemke Aline P, Stehmann João R, Bonatto Sandro L, Salzano Francisco M, Freitas Loreta B
机构信息
Departamento de Genética, Universidade Federal do Rio Grande do Sul, Caixa Postal 15053, 91501-970, Porto Alegre, RS, Brazil.
出版信息
Genetica. 2006 Jan;126(1-2):3-14. doi: 10.1007/s10709-005-1427-2.
Representatives from 11 Petunia Jussieu species in south and southeast Brazil were compared with two Calibrachoa La Llave & Lex., one Bouchetia Dunal, and two Nierembergia Ruiz & Pav. taxa in relation to DNA molecular variability. A total of 4532 base pairs related to one nuclear, five plastidial and one mitochondrial systems was investigated. Petunia and Calibrachoa, although separated among themselves, clearly differentiate from the two other genera. Despite the fact that the Petunia species do not show marked molecular differences, they can be separated in two complexes, in good agreement with altitude data. Petunia + Calibrachoa should have diverged from other clades at about 25 million years before present.
对巴西南部和东南部11种碧冬茄属植物的代表与2种小花矮牵牛属植物、1种布氏花属植物以及2种紫萼距花属分类群进行了DNA分子变异性比较。共研究了与一个核系统、五个质体系统和一个线粒体系统相关的4532个碱基对。碧冬茄属和小花矮牵牛属虽然彼此分开，但与其他两个属明显区分开来。尽管碧冬茄属物种没有明显的分子差异，但根据海拔数据，它们可以分为两个复合体。碧冬茄属 + 小花矮牵牛属应该在距今约2500万年前与其他进化枝分化。
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