Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1093/botlinnean/boy066 |
A Hollywood palm icon unmasked: clinal variation in Washingtonia (Arecaceae) of Peninsular California | |
Villanueva-Almanza, Lorena1; Garcillan, Pedro P.2; Avila-Lovera, Eleinis1; Perez, Vanessa1; Silva Bejarano, Christian2; Focht, Eric1; Ezcurra, Exequiel1 | |
通讯作者 | Villanueva-Almanza, Lorena |
来源期刊 | BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
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ISSN | 0024-4074 |
EISSN | 1095-8339 |
出版年 | 2018 |
卷号 | 188期号:4页码:406-425 |
英文摘要 | Washingtonia is an American genus of palms currently composed of two species, W. filifera and W. robusta. Poor understanding of their morphology and distribution led initially to the description of numerous new species and, later, to a simplification resulting in the current understanding of the genus. In the wild, both distinct forms occur in the extremes of a 1300-km gradient, linked by morphological intermediates, suggesting that there is continuous morphological variation of the two forms instead of the long-held idea of two species. We addressed this hypothesis by taking measurements of morphological traits of stems and functional traits of leaves at 18 sites spanning the distribution range of the genus in Mexico and the USA. We examined the relationship between the traits of the plants, individually and all traits combined, and latitude using a principal component analysis. We compared a linear model against a non-linear model to test whether traits in Washingtonia change gradually along the latitudinal gradient or if there are clear geographical breaks between populations. We found strong statistical support for the hypothesis that there is a gradual change in vegetative morphological traits in Washingtonia along the latitudinal gradient of Peninsular California, instead of two clear morphologically distinguishable species with a hybrid zone. Our findings suggest that Washingtonia is composed of one highly variable species and that local differentiation of populations is related to environmental gradients. |
英文关键词 | freezing hybridization Kofa latitudinal cline morphology plasticity principal component analysis stem diameter |
类型 | Article |
语种 | 英语 |
国家 | USA ; Mexico |
收录类别 | SCI-E |
WOS记录号 | WOS:000454040900005 |
WOS关键词 | MORPHOLOGICAL VARIATION ; METROXYLON-SAGU ; OASES |
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/2XILL650/208234 |
作者单位 | 1.Univ Calif Riverside, Dept Bot & Plant Sci, Riverside, CA 92521 USA; 2.Ctr Invest Biol Noroeste, La Paz 23096, Baja California, Mexico |
推荐引用方式 GB/T 7714 | Villanueva-Almanza, Lorena,Garcillan, Pedro P.,Avila-Lovera, Eleinis,et al. A Hollywood palm icon unmasked: clinal variation in Washingtonia (Arecaceae) of Peninsular California[J],2018,188(4):406-425. |
APA | Villanueva-Almanza, Lorena.,Garcillan, Pedro P..,Avila-Lovera, Eleinis.,Perez, Vanessa.,Silva Bejarano, Christian.,...&Ezcurra, Exequiel.(2018).A Hollywood palm icon unmasked: clinal variation in Washingtonia (Arecaceae) of Peninsular California.BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,188(4),406-425. |
MLA | Villanueva-Almanza, Lorena,et al."A Hollywood palm icon unmasked: clinal variation in Washingtonia (Arecaceae) of Peninsular California".BOTANICAL JOURNAL OF THE LINNEAN SOCIETY 188.4(2018):406-425. |
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