Natural hybridization origin of <Emphasis Type="Italic">Rhododendron agastum </Emphasis>(Ericaceae) in Yunnan,China: inferred from morphological and molecular evidence |
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| Authors: | Jing-Li Zhang Chang-Qin Zhang Lian-Ming Gao Jun-Bo Yang Hong-Tao Li |
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| Institution: | (1) Kunming Botanic Garden, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China;(2) The Graduate School of Chinese Academy of Sciences, Beijing, China;(3) Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China |
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| Abstract: | The natural hybridization that occurs between two sympatric species of Rhododendron subgenus Hymenanthes in Yunnan, China, was investigated. The assumed parents, Rhododendron delavayi Franch. and R. decorum Franch., are morphologically distinct, and the putative hybrid species, R. agastum Balf. f. et W. W. Smith, has an intermediate morphology. We used the main morphological characters, sequences of the nuclear
ribosomal DNA ITS region, and the chloroplast DNA trnL-F intronspacer to analyze the three species, and compared these morphological and molecular data with an artificial hybrid between
R. decorum (♀) × R. delavayi (♂). From the results, we conclude that R. agastum is a natural hybrid between a female R. delavayi and a male R. decorum. |
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| Keywords: | ITS Morphology Natural hybridization Rhododendron trnL-F |
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