HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (9) Citing Articles via Google Scholar Google Scholar Articles by Riihimäki, M. Articles by Savolainen, O. Search for Related Content PubMed Articles by Riihimäki, M. Articles by Savolainen, O. Agricola Articles by Riihimäki, M. Articles by Savolainen, O.

Environmental and genetic effects on flowering differences between northern and southern populations of Arabidopsis lyrata (Brassicaceae)¹

Department of Biology, PO Box 3000, FIN-90014 University of Oulu, Finland

Arabidopsis lyrata (Brassicaceae) is a close outcrossing relative of A. thaliana. We examine flowering time variation of northern and southern A. lyrata populations in controlled environmental conditions, in a common garden experiment with A. thaliana, and in the field. Southern populations of A. lyrata flowered earlier than northern ones in all environmental conditions. Individuals from southern populations were more likely to flower in short days (14 h light) than northern ones, and all populations had a higher probability of flowering and flowered more rapidly in long days (20 h). The interaction of population and day length significantly affected flowering probability, and flowering time in one of two comparisons. The common garden experiment demonstrated differences between populations in the response to seed cold treatment, but growth chamber experiments showed no vernalization effect after 4 wk of rosette cold treatment. In a field population in Norway, a high proportion of the plants flowered in each year of the study. The plants progressed to flowering more rapidly in the field and common garden than in the growth chamber. The genetic basis of these flowering time differences here can be further studied using A. thaliana genetic tools.

Key Words: adaptation • Arabidopsis lyrata • Brassicaceae • day length • flowering time • vernalization

This article has been cited by other articles:

				H. Kuittinen, A. Niittyvuopio, P. Rinne, and O. Savolainen Natural Variation in Arabidopsis lyrata Vernalization Requirement Conferred by a FRIGIDA Indel Polymorphism Mol. Biol. Evol., February 1, 2008; 25(2): 319 - 329. [Abstract] [Full Text] [PDF]

				A. J. Miller-Rushing, T. Katsuki, R. B. Primack, Y. Ishii, S. D. Lee, and H. Higuchi Impact of global warming on a group of related species and their hybrids: cherry tree (Rosaceae) flowering at Mt. Takao, Japan Am. J. Botany, September 1, 2007; 94(9): 1470 - 1478. [Abstract] [Full Text] [PDF]

				M. Gaudeul, H. K. Stenoien, and J. Agren Landscape structure, clonal propagation, and genetic diversity in Scandinavian populations of Arabidopsis lyrata (Brassicaceae) Am. J. Botany, July 1, 2007; 94(7): 1146 - 1155. [Abstract] [Full Text] [PDF]