Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1086/339237 |
Phenotypic differentiation between three ancient hybrid taxa and their parental species | |
Rosenthal, DM; Schwarzbach, AE; Donovan, LA; Raymond, O; Rieseberg, LH | |
通讯作者 | Rieseberg, LH |
来源期刊 | INTERNATIONAL JOURNAL OF PLANT SCIENCES
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ISSN | 1058-5893 |
出版年 | 2002 |
卷号 | 163期号:3页码:387-398 |
英文摘要 | The primary requirement for a new diploid species to arise via hybridization is ecological divergence from its parental species. Ecological divergence protects the nascent hybrid species from competition with its progenitor species and may contribute to reproductive isolation. However, the means by which hybridization might facilitate the necessary adaptive transitions are poorly understood. Here, we report the results of a glasshouse experiment in which 42 morphological and ecophysiological traits were measured in three hybrid sunflower species (Helianthus anomalus, Helianthus deserticola, and Helianthus paradoxus) and their parental species (Helianthus annuus and Helianthus petiolaris). A surprisingly high proportion of traits were extreme relative to the parental species (24%, 20%, and 39% of traits in H. anomalus, H. deserticola, and H. paradoxus, respectively). Most of the extreme traits have previously been reported in the literature as adaptations to dune (H. anomalus), high-desert (H. deserticola), or high-salt (H. paradoxus) habitats. We propose that hybridization has contributed to ecological divergence largely via the generation of extreme traits in segregating hybrids, a commonly observed phenomenon called "transgressive segregation." |
英文关键词 | adaptation ecological divergence Helianthus hybridization photosynthesis speciation sunflower transgressive segregation |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000174783500005 |
WOS关键词 | WATER-USE EFFICIENCY ; CARBON-ISOTOPE DISCRIMINATION ; NUCLEAR RIBOSOMAL DNA ; HELIANTHUS ASTERACEAE ; SALT TOLERANCE ; TRANSGRESSIVE SEGREGATION ; SARCOBATUS-VERMICULATUS ; RETICULATE EVOLUTION ; WILD SUNFLOWERS ; CHLOROPLAST DNA |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/142821 |
作者单位 | (1)Indiana Univ, Dept Biol, Bloomington, IN 47405 USA;(2)Kent State Univ, Dept Biol Sci, Kent, OH 44242 USA;(3)Univ Georgia, Dept Bot, Athens, GA 30602 USA |
推荐引用方式 GB/T 7714 | Rosenthal, DM,Schwarzbach, AE,Donovan, LA,et al. Phenotypic differentiation between three ancient hybrid taxa and their parental species[J],2002,163(3):387-398. |
APA | Rosenthal, DM,Schwarzbach, AE,Donovan, LA,Raymond, O,&Rieseberg, LH.(2002).Phenotypic differentiation between three ancient hybrid taxa and their parental species.INTERNATIONAL JOURNAL OF PLANT SCIENCES,163(3),387-398. |
MLA | Rosenthal, DM,et al."Phenotypic differentiation between three ancient hybrid taxa and their parental species".INTERNATIONAL JOURNAL OF PLANT SCIENCES 163.3(2002):387-398. |
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