title: Analysis of genetic relationships in germplasms of Mugua in China revealed by internal transcribed spacer and its taxonomic significance.
abstract: Genetic relationships were studied among eight species of three taxa in the genus Chaenomeles by nuclear ribosomal internal transcribed spacer (ITS) analysis. A genetic distance matrix based on ITS sequences was estimated according to the formula of Kimura-2 parameter and a neighbour-joining phenogram, which were obtained with Clustalx4.1 software. The results showed that the germplasms of Mugua originate from Ch. speciosa (Sweet) Nakai, not including Ch. sinensis (Thouin) Kochne and Ch. cathayensis (Hemsl.) Schneid. The results also showed that 'Yao Mugua' and 'Ornamental Mugua' are the most distantly related species in germplasms.
authors.affiliation: Research Center of Plant Cell Engineering of Anhui Province, Lu'an 237012, China. hanbx1978@sina.com
authors.forename: Bangxing
authors.initials: B
authors.lastname: Han
authors.forename: Huasheng
authors.initials: H
authors.lastname: Peng
authors.forename: Qin
authors.initials: Q
authors.lastname: Yao
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhou
authors.forename: Ming'en
authors.initials: M
authors.lastname: Cheng
authors.forename: Dequn
authors.initials: D
authors.lastname: Wang
mesh_terms: D001483:Base Sequence; D002681:China; D018744:DNA, Plant / Q000235:genetics* / Q000302:isolation & purification; D029001:Herbal Medicine; D008516:Medicine, Chinese Traditional; D008969:Molecular Sequence Data; D028321:Plant Preparations / Q000737:chemistry; D010946:Plants, Medicinal / Q000235:genetics*; D016133:Polymerase Chain Reaction
chemical_list: D018744:DNA, Plant; D028321:Plant Preparations