Dormancy is a strategy of woody perennials to survive to cold winter temperatures, but is also a requisite for proper flowering, with chilling requirements specific for each cultivar. However, the biology behind these requirements remains obscure. Anther and pollen development is synchronized with the seasons. The fact that clear developmental steps are conserved in this process suggests that this may be useful to frame these steps in a dormancy context. In this work, anther development and pollen formation are cytochemically characterized in relation to dormancy.

Financial support for this research was provided by Ministerio de Economía y Competitividad (MINECO) - European Regional Development Fund, European Union (AGL2012-40239 and BES- 2010-037992 to E. F.); Instituto Nacional de Investigación Agraria (INIA) (RFP2012-00017-C03, RTA2014-00085-00); Gobierno de Aragón - European Social Fund, European Union (Grupo Consolidado A-43).

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Peer reviewed