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Crossability analysis in subgenus Tulipa of the genus Tulipa L.
Authors:LEONARD W D VAN RAAMSDONK  JOOP P VAN EIJK  WIM EIKELBOOM
Institution:1. Department of Environment Studies, Panjab University, Chandigarh, 160 014, India;2. Department of Botany, Panjab University, Chandigarh, 160 014, India;3. Central University of Punjab, Mansa Road, Bathinda, 151 001, India;1. College of Life Sciences, Capital Normal University, 105 Xisanhuanbeilu, Haidian District, Beijing 100048, China;2. Institute of Paleontology, Hebei GEO University, 136 Huaiandonglu, Shijiazhuang 050031, China;3. Division of Entomology, Department of Ecology & Evolutionary Biology, Natural History Museum, University of Kansas, 1501 Crestline Drive, Suite 140, Lawrence, KS 66045-4415, USA;4. Division of Invertebrate Zoology, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024-5192, USA;5. Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013-7012, USA;1. Department of Physics, College of Science, King Faisal University, P.O. Box 400, Hofuf, Al-Ahsa 31982, Saudi Arabia;2. Department of Chemistry, College of Science, King Faisal University, P.O. Box 380, Hofuf, Al-Ahsa 31982, Saudi Arabia;3. Center of Nanotechnology, King Abdulaziz University, Jeddah 21589, Saudi Arabia;1. Department of Human Evolutionary Biology, Harvard University, Cambridge MA 02138, USA;2. Anthropological Institute and Museum, University of Zurich, CH-8057 Zurich, Switzerland;3. Georgian National Museum, 0105 Tbilisi, Georgia
Abstract:A range of almost 1400 cross combinations has been carried out between 31 species of Tulipa subgenus Tulipa. Most of the sections are well separated reproductively from each other. The designated species aggregates in section Clusianae appeared to be intersterile. Also in section Kolpakowskianae the species, as far as used, cannot be combined. Some crosses between species of section Tulipanum succeeded. The species of sections Eichleres and Tulipa (including the cultivated tulip T gesneriana) could be combined in various ways, although the highest level of seed set was achieved within either section. The crossability data support the current taxonomic division. The level of reproductive isolation between sympatric species is discussed, and the importance of crossability studies for plant breeding in Tulipa pointed out briefly.
Keywords:Angiosperms  biological species  breeding  gene pools -hybridization  Liliaceae  taxonomy
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