Analysis of Mitochondrial nad1b-c Intron Sequences in Orchidaceae: Utility and Coding of Length-change Characters

摘要: Abstract DNA sequences for 100 species representing all subfamilies of Orchidaceae and Hypoxis as outgroup were produced the intron between b c exons subunit 1 mitochondrial NADH dehydrogenase (nad1). Although proportion variable sites is relatively low (slightly greater than rbcL in same taxa), length variation common, such that ranges from 905 bp to approximately 2100 among species. The variability means are fairly easily aligned, provides an opportunity consider use indels where they a significant data set. Critical examination indel-coding schemes indicates unordered multistate coding most useful when nested present. Cladistic analysis base changes alone, well combined set, reveals importance characters, since provide additional resolution branch support beyond alone have higher ...