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Identification of flowering genes in strawberry, a perennial SD plant
Authors:Katriina Mouhu  Timo Hytönen  Kevin Folta  Marja Rantanen  Lars Paulin  Petri Auvinen  Paula Elomaa
Institution:(1) Department of Applied Biology, University of Helsinki, PO Box 27, FIN-00014 Helsinki, Finland;(2) Finnish Graduate School in Plant Biology, University of Helsinki, PO Box 56, FIN-00014 Helsinki, Finland;(3) Viikki Graduate School in Biosciences, University of Helsinki, PO Box 56, FIN-00014 Helsinki, Finland;(4) Horticultural Sciences Departmen, University of Florida, Gainesville, FL, USA;(5) Institute of Biotechnology, University of Helsinki, PO Box 56, FIN-00014 Helsinki, Finland
Abstract:

Background  

We are studying the regulation of flowering in perennial plants by using diploid wild strawberry (Fragaria vesca L.) as a model. Wild strawberry is a facultative short-day plant with an obligatory short-day requirement at temperatures above 15°C. At lower temperatures, however, flowering induction occurs irrespective of photoperiod. In addition to short-day genotypes, everbearing forms of wild strawberry are known. In 'Baron Solemacher' recessive alleles of an unknown repressor, SEASONAL FLOWERING LOCUS (SFL), are responsible for continuous flowering habit. Although flower induction has a central effect on the cropping potential, the molecular control of flowering in strawberries has not been studied and the genetic flowering pathways are still poorly understood. The comparison of everbearing and short-day genotypes of wild strawberry could facilitate our understanding of fundamental molecular mechanisms regulating perennial growth cycle in plants.
Keywords:
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