Preliminary Study of <i>Compositae</i> Family Plants Classification Based on Petal Pigments

Abstract

Abatract: Choose 32 Compositae family plants which come from 14 different species (mainly based on yellow petals) were chosed, extract their pigments with anhydrous ethanol and N-butyl alcohol: Formic acid: water=4:1:2(in volume) as solution for chromatographywere extracted, and observe each petal band under 254nm ultraviolet light and write down Rf value of each band was observed. In the end, using NTSYS-pc 2.10e software to construct petal pigments phylogenetic tree with UPGMA method. The cluster analysis suggested that petal pigments of 32 Compositae family plants had certain polymorphism, and they could be classified into 4 groups at 0.70. In the 4 groups, most of the material (81.25%) belonged to group I, and the rest were classified into group II、III、IV respectively. Most of them which had a close relationship could be in one group, and those had remote relationship could be distinguished from each other.Classification of Compositae species based on petal pigments is feasible, which has an advantage of rapid, stable, low-carbon, environmental friendly when compared with mmolecular marker technology.