caa a22 4500 469096659 CHVBK 20180323133032.0 cr unu---uuuuu 170328e19920101xx s 000 0 eng 10.1007/BF00319013 doi (NATIONALLICENCE)springer-10.1007/BF00319013 Differentiation of spring emerging and autumn emerging ecotypes in Galium spurium L. var. echinospermon [Elektronische Daten] [Michiko Masuda, Izumi Washitani] Summary: Ecotypes of Galium spurium L. var. echinospermon with distinct germination phenologies were found to occur in two adjacent plots of a grassland nature reserve with different management histories: a spring-germinating population is present in a winter-burnt plot, and an autumn-germinating type in an unburnt plot. These ecotypes share common flowering and fruiting phenologies, and disperse their seeds in early summer. Markedly contrasting thermal dormancy/germination characteristics were demonstrated for their seeds in systematic laboratory tests performed after several types of seed storage including storage in the field. The primary dormancy of seeds of the spring germinator was removed by moist-chilling or field winter-chilling, while that of the autumn germinator was removed by moist storage at 25°C or field summer temperatures. Biseasonal seedling emergence of the species appears to be due to a local differentiation of distinct ecotypes. Springer-Verlag, 1992 Seed germination differentiation nationallicence Dormancy nationallicence Spring germinator nationallicence Autumn germinator nationallicence Phenology nationallicence Masuda Michiko Department of Biology, College of Arts and Sciences, University of Tokyo, Komaba 3-8-1, Meguro-ku, 153, Tokyo, Japan aut Washitani Izumi Institute of Biological Sciences, University of Tsukuba, 305, Tsukuba, Ibaraki, Japan aut Oecologia Springer-Verlag 89/1(1992-01-01), 42-46 0029-8549 89:1<42 1992 89 442 https://doi.org/10.1007/BF00319013 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00319013 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Masuda Michiko Department of Biology, College of Arts and Sciences, University of Tokyo, Komaba 3-8-1, Meguro-ku, 153, Tokyo, Japan aut NATIONALLICENCE 700 1- Washitani Izumi Institute of Biological Sciences, University of Tsukuba, 305, Tsukuba, Ibaraki, Japan aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 89/1(1992-01-01), 42-46 0029-8549 89:1<42 1992 89 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer