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题名: Natural Hybridization between Rhododendron delavayi and R-cyanocarpum (Ericaceae), from Morphological, Molecular and Reproductive Evidence
作者: Ma, Yong-Peng1, 2, 3; Zhang, Chang-Qin1, 2; Zhang, Jing-Li4; Yang, Jun-Bo5
刊名: JOURNAL OF INTEGRATIVE PLANT BIOLOGY
英文摘要: The natural hybridization that occurs between two sympatric species of Rhododendron subgenus Hymenanthes in Yunnan, China, was investigated. In field observations, it was noted that the putative hybrids between R. delavayi Franch. and R. cyanocarpum (Franch.) Franch. ex W.W. Sm. had intermediate morphologies. On the basis of morphology, chloroplast DNA (trnL-rpl32) and nuclear DNA (waxy), hybrids and parental species were identified. Hybridization occurred in both directions, but was asymmetrical, with R. delavayi as the major maternal parent. Reciprocal hand pollination treatments showed that either species, as pollen donor or pollen receiver, could produce fruits. It was noted that fruit set varied among treatments. The same pollinators (bumblebees) were shared in both parental species. From these results, we conclude that individuals with intermediate morphologies are indeed of hybrid origin from natural hybridization between R. cyanocarpum and R. delavayi. Furthermore, we presume the hybridization at the study site could have been initiated by habitat disturbance in the 1950s, and we may hence witness the early stages of hybrid swarm formation.
出版日期: 2010-09-01
卷号: 52, 期号:9, 页码:844-851
DOI标识: 10.1111/j.1744-7909.2010.00970.x
语种: 英语
收录类别: SCI
学科分类: Biochemistry & Molecular Biology; Plant Sciences
ISSN号: 1672-9072
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/2992
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 Bot Garden, Kunming Inst Bot, Kunming 650204, Peoples R China
2.Chinese Acad Sci, Key Lab Resource Plants & Biotechnol, Kunming Inst Bot, Kunming 650204, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
4.Yunnan Agr Univ, Kunming 650201, Peoples R China
5.Chinese Acad Sci, Key Lab Biodivers & Biogeog, Kunming Inst Bot, Kunming 650204, Peoples R China

Recommended Citation:
Ma, YP; Zhang, CQ; Zhang, JL; Yang, JB.Natural Hybridization between Rhododendron delavayi and R-cyanocarpum (Ericaceae), from Morphological, Molecular and Reproductive Evidence,JOURNAL OF INTEGRATIVE PLANT BIOLOGY,2010,52(9):844-851
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