Catkin frost damage in Mediterranean cork-oak (Quercus suber L.).

TitleCatkin frost damage in Mediterranean cork-oak (Quercus suber L.).
Publication TypeJournal Article
Year of Publication2001
AuthorsGarcía-mozo, H., Hidalgo P. J., Galán C., Gómez-Casero M. Teresa, & Domínguez E.
JournalIsrael Journal of Plant Sciences
Volume49
Issue1
Pagination41 - 47
Date Published2001///
KeywordsCATKIN-bearing plants, Cork oak, flowers, Fruit, Phenology, PLANT spores, POLLEN (citation)
Abstract

During a period of study of floral phenology and pollen production in the cork-oak, Quercus suber L. (1997–99), an interruption of catkin development was detected in spring 1998. The cause might have been a sharp drop in minimum temperatures during that period, which coincided with the initial stages of microsporogenesis. Results show that environmental temperatures close to 0 ºC halted microsporogenesis and catkinelongation, resulting in their complete death. No fruits were observed in the affected zone, as a possible consequence of the lack of pollen. Phenological, histological, andaerobiological data are analyzed as a whole in order to gain a better understanding of the phenomenon. Cold spells during flowering may be one of the factors influencing the high interannual variability of acorn production in Quercus species. [ABSTRACT FROM AUTHOR]

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