Origin and Relationships of the Sino ・ HimalayanImpatiens ( Balsaminaceae ) Based on Molecular Phylogenetic Analysis , Chromosome Numbers and Gross Morphology
Origin and Relationships of the Sino ・ HimalayanImpatiens ( Balsaminaceae ) Based on Molecular Phylogenetic Analysis , Chromosome Numbers and Gross Morphology
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发表时间：
2014
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通讯作者：
Hirotomo Fujihashi;A. Shinobu;Hideaki OHBAa
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作者：
Hirotomo Fujihashi;A. Shinobu;Hideaki OHBAa
We used the combined sequence of rbcL and the spacer between trnL and trnF to generate the first molecular phylogeny of Impatiens (Balsaminaceae) based on twenty five species of Impatiens and using Tropaeolum major L. (Tropaeolaceae) as the outgroup. The phylogenetic tre drawn by this analysis revealed the presence of two large monophyletic clades: one consisting only of Himalayan species and the other of species distributed in various areas of the world. The phylogenetic tree is strongly correlated with chromosome numbers reported for the species examined: the Himalayan clade has x = 7 or 9; the other clade has x = 8 or 10. With reg紅 dto character evolution, the tree supported evolutionary trends in basic chromosome numbers and inflorescence morphology. Morphological diversification of the lower sepal, which is a significant characters used in the classification at the species level, does not clearly correlate with the tre.