Testing for phylogenetic conflict among molecular data sets in the tribe Triticeae (Gramineae)
Testing for phylogenetic conflict among molecular data sets in the tribe Triticeae (Gramineae)
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DOI：
10.2307/2413529
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发表时间：
1996-12-01
影响因子：
6.5
通讯作者：
Kellogg, EA
中科院分区：
文献类型：
--
作者：
MasonGamer, RJ;Kellogg, EA
小麦族二倍体间不育属有4个分子数据集，4个已发表的树之间存在许多差异。使用树比较、不一致长度差检验、Wilcoxon符号秩检验和排列检验来检查所有六个数据集的两两组合。我们描述了不同的比较方法的优点、缺点和性质。除了单个分类单元的位置外，测试结果没有提供证据表明三个核数据集之间的系统发育信号有显著差异。然而，叶绿体DNA限制性位点数据支持一个明显不同的树，这些差异可能反映了叶绿体基因组的一个单独的进化史。
Four molecular data sets are available for the diploid intersterile genera of the cereal grain tribe Triticeae, and there are numerous differences among the four published trees. All six pairwise combinations of data sets were examined using tree comparisons, the incongruence length difference test, the Wilcoxon signed ranks test, and a permutation test. We describe some advantages, disadvantages, and properties of the different comparison methods. Test results provide no evidence for significant differences in the phylogenetic signal among the three nuclear data sets, with the exception of the placement of a single taxon. The chloroplast DNA restriction site data, however, support a significantly different tree, and the differences probably reflect a separate evolutionary history of the chloroplast genome.