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Intra- and intraspecific variation of Juniperus virginiana and J. scopulorum seedling based on volatile oil composition |
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| Authors: | CW Comer Robert P Adams David F van Haverbeke |
| Institution: | 7521 S. W. 56th Avenue, Gainesville, FL 32601, USA Science Research Center, Hardin-Simmons University, Plant Resources Institute, 360 Wakara Way, Salt Lake City, UT 84108, USA USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, University of Nebraska, Lincoln, Lincoln, NE 68583, USA |
| Abstract: | Comparisons of volatile oil constituents were made among samples of juvenile foliage collected from 78 Juniperus virginiana and 28 J. scopulorum seedling sources growing in a “common garden” environment. A canonical variate analysis, a principal coordinates analysis and hybrid distance diagrams of 30 chemical characters indicate both taxa are good species and that they exhibit clinical patterns in the Great Plains. In addition, a possible evoluitonary link between present-day J. virginiana populations in southern Texas and ancient J. scopulorum populations is indicated. |
| Keywords: | Juniperus virginiana J scopulorum Cupressaceae Coniferae hybridization seedlings intraspecific variation interspecific variation Great Plains |
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