Investigation of hybridization between Asclepias speciosa and A. syriaca using alkanes,fatty acids and triterpenoids |
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| Institution: | 1. Biology Department, Box 423, Baylor University, Waco, TX 76798, U.S.A.;2. Division of Biology, Kansas State University, Manhattan, KS 66506, U.S.A.;3. The Standard Oil Company, 4440 Warrensville Center Rd, Cleveland, OH 44128, U.S.A.;1. Department of Biology, Faculty of Science, University of Guilan, P.O. Box, 41335-1914 Rasht, Iran;2. Department of Plant Sciences, Norwegian University of Life Sciences, P.O. Box: 5003, 1432 Ås, Norway;1. Gazi University, TUSAS Kazan Vocational High School, Department of Automotive Technology, 06760 Ankara, Turkey;2. Gazi University, Faculty of Technology, Department of Automotive Engineering, 06500 Ankara, Turkey;3. Hakkari University, Faculty of Engineering, Department of Mechanical Engineering, 30000 Hakkari, Turkey;1. Department of Environment Science and Engineering, Shanghai University, Shanghai 200444, China;2. School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200062, China;3. Shanghai Academy of Environmental Science, Shanghai 200234, China;1. Key Laboratory of Environment Correlative Dietology, Ministry of Education, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China;2. Georgetown University Medical Center, Washington, DC, USA;3. Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization, Hunan Collaborative Innovation for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, 410128, China;1. Department of Food Technology, School of Interdisciplinary Science and Technology, Jamia Hamdard, New Delhi, 110062, India;2. Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India;3. Department of Pharmacognosy and Phytochemistry, School of Pharmaceutical Education & Research, Jamia Hamdard, New Delhi, 110062, India;1. Department of Medical Sciences, University of Ferrara, Italy;2. Gastroenterology Unit, Department of Medicine, A.O.U.I. Policlinico G. B. Rossi and University of Verona, Italy;3. Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Italy;4. Department of Medical and Surgical Scieces, University of Bologna, Italy |
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| Abstract: | Individuals of Asclepias speciosa and A. syriaca from Kansas and Nebraska were sampled and their alkanes, fatty acids and triterpenoids analyzed. Analysis of variance for 30 compounds yielded four significant and seven highly significantly quantitative differences between the taxa. No qualitative differences were found. Analyses of the components using Well's hybrid distance diagram and principal coordinate analysis confirmed that hybridization as well as introgression is occurring between these taxa in this region. Data from isozymes revealed that the two taxa are almost identical. These data, taken together, are indicative of a closer (perhaps conspecific) relationship between these taxa than previously suggested. |
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