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题名: Morphological and molecular evidence of natural hybridization between two distantly related Rhododendron species from the Sino-Himalaya
作者: Zha, Hong-Guang1; Milne, Richard Ian2; Sun Hang(孙航)1
刊名: BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
关键词: AFLP ; chloroplast DNA sequences ; internal transcribed spacer (ITS) ; Rhododendron decorum ; Rhododendron delavayi
英文摘要: Rhododendron (Ericaceae) is a large woody genus in which hybridization may play an important role in evolution and speciation, particularly in the Sino-Himalayan region, where many interfertile species often occur sympatrically. Natural hybridization between Rhododendron delavayi Franch. (= R. arboreum ssp. delavayi) and Rhododendron decorum Franch., which belong to different subsections of subgenus Hymenanthes, was investigated. Material of R. delavayi and R. decorum and their putative hybrids was collected from the wild. On the basis of morphology, chloroplast DNA, nuclear ribosomal DNA, and AFLP profiles, hybrids and parental species were identified. Hybridization occurred in both directions, but was asymmetrical, with R. delavayi as the major maternal parent in the hybrid zone. Most of the hybrids possessed intermediate phenotypes, and amongst the 15 hybrids detected were six F1s, two F2s, one first-generation backcross to R. delavayi, and two first-generation backcrosses to R. decorum. This indicates that, if Rhododendron underwent rapid radiation in this region, it did so in spite of permeable species barriers. (c) 2008 The Linnean Society of London.
出版日期: 2008
卷号: 156, 期号:1, 页码:119-129
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 0024-4074
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/2771
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650204, Yunnan, Peoples R China
2.Univ Edinburgh, Inst Mol Plant Sci, Edinburgh EH9 3JH, Midlothian, Scotland

Recommended Citation:
Zha, HG; Milne, RI; Sun, H.Morphological and molecular evidence of natural hybridization between two distantly related Rhododendron species from the Sino-Himalaya,BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2008,156(1):119-129
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