Main Article Content

Abstract

The flowering season and the pollen season of Corylus and Castanea were analyzed and compared in Trieste over a period of 14 years (1991–2004). Agreat variability in the flowering phenophase progression was found both among plants and from year to year. The pollen seasons of Corylus and Castanea were longer than the respective flowering seasons. A lack of correlation between the maximum flowering and the maximum pollen concentration was observed, the highest airborne pollen counts occurring two or more weeks after the maximum flowering. Given the geographical complexity of the area around Trieste, the onset of the flowering of Corylus and Castanea does not occur at the same time everywhere, and grains coming from different local and extra-local sources, characterized by a late blooming, were also found. Medium-long range transport from Slovenia should also be considered. 

Keywords

Aerobiology Corylus Castanea flowering phenology Italy Trieste

Article Details

Author Biographies

Loredana Rizzi Longo, University of Trieste

Department of Life Sciences, University of Trieste, Faculty of Science,Via L. Giorgieri 10, 34127 Trieste, Italy

Marialuisa Pizzulin Sauli, University of Trieste

Department of Life Sciences, University of Trieste, Faculty of Science,Via L. Giorgieri 10, 34127 Trieste, Italy
How to Cite
Rizzi Longo, L., & Pizzulin Sauli, M. (2010). Flowering phenology and airborne pollen occurrence of Corylus and Castanea in Trieste (Italy), 1991-2004. Acta Botanica Croatica, 69(2). Retrieved from https://www.abc.botanic.hr/index.php/abc/article/view/301