PJB-2009-21
MOLECULAR PHYLOGENY OF ERIOBOTRYA LINDL. (LOQUAT) INFERRED FROM INTERNAL TRANSCRIBED SPACER SEQUENCES OF NUCLEAR RIBOSOME
PING LI1,2, SHUNQUAN LIN1*, XIANGHUI YANG1, GUIBING HU1 AND YUEMING JIANG3
Abstract
Phylogenetic relationship of the genus Eriobotyra was investigated on the basis of the nuclear ribosomal DNA Internal Transcribed Spacer (ITS) sequence. A phylogenetic tree of 15 loquat accessions (species, varieties and types) was generated using Photinieae serrulata L., Osteomeles anthyllidifolia Lindl., Sorbus scopulina Hedl., Malus prunifolia (Willd.) Barkh, and Pyrus pyrifolia (Burm.) Nakai as outgroups, and Rhaphiolepis indica (L.) Lindl., as an ingroup. The study exhibited that loquat accessions formed a monophyletic group. In the consensus trees, loquat accessions were divided into six clusters, i.e., Cluster I: Eriobotyra seguinii Card. and E. henryi Nakai; Cluster II: E. cavaleriei Rehd and E. fragrans Champ; Cluster III: E. malipoensis Kuan, E. prinoides Rehd. & Wils.var. dadunensis H. Z. Zhang and E. japonica Lindl.; Cluster IV: E.elliptica Lindl., E.bengalensis Hook.f., E.bengalensis Hook. f. forma angustifolia Vidal; Cluster V: E. salwinensis Hand-Mazz and Cluster VI: E. deflexa Nakai E. deflexa Nakai var. buisanensis Nakai, E. serrate Vidal and E. kwangsiensis Chun. In addition, it was suggested that E. cavaleriei Rehd could be treated as a variety under E. fragrans Champ.
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