caa a22 4500 475806360 CHVBK 20180406123748.0 cr unu---uuuuu 170329e20000901xx s 000 0 eng 10.1007/BF00985277 doi (NATIONALLICENCE)springer-10.1007/BF00985277 Local evolution of obligate autogamy in Epipactis helleborine subsp. neerlandica (Orchidaceae) [Elektronische Daten] [H. Pedersen, B. Ehlers] Isozyme analysis was used to assess the origin of the DanishEpipactis renzii, a local endemic of open coastal dunes. It seems to have evolved recently in several local populations of the more or less allogamousE. helleborine subsp.neerlandica. The obligately autogamousE. renzii is restricted to the easternmost part of the Danish range ofE. helleborine subsp.neerlandica, indicating that transition to obligate autogamy has been a selective advantage in that area. This may be explained by water stress, caused by a higher evapotranspiration (cf. the mean temperature of July which increases towards the east) — obligate autogamy shortens the time span from anthesis to fruit set due to a rapid pollination process. We propose thatE. renzii should only be recognized as a variety ofE. helleborine subsp.neerlandica. Springer-Verlag, 2000 Orchidaceae nationallicence Epipactis helleborine subsp. neerlandica nationallicence speciation nationallicence breeding system nationallicence pollination nationallicence isozymes nationallicence Pedersen H. The Botanical Museum, University of Copenhagen, Gothersgade 130, DK-1123, Copenhagen K, Denmark aut Ehlers B. Department of Genetics and Ecology, Institute of Biological Sciences, University of Aarhus, Ny Munkegade, Building 540, DK-8000, Aarhus C, Denmark aut Plant Systematics and Evolution Springer-Verlag 223/3-4(2000-09-01), 173-183 0378-2697 223:3-4<173 2000 223 606 https://doi.org/10.1007/BF00985277 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00985277 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pedersen H. The Botanical Museum, University of Copenhagen, Gothersgade 130, DK-1123, Copenhagen K, Denmark aut NATIONALLICENCE 700 1- Ehlers B. Department of Genetics and Ecology, Institute of Biological Sciences, University of Aarhus, Ny Munkegade, Building 540, DK-8000, Aarhus C, Denmark aut NATIONALLICENCE 773 0- Plant Systematics and Evolution Springer-Verlag 223/3-4(2000-09-01), 173-183 0378-2697 223:3-4<173 2000 223 606 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer