Effects of Different Pretreatments on Germination of Prunus serotina Seed Sources

Esen, D., Yildiz, 0., Sarginci, M., and Isik, K. Journal of Environmental Biology 28(1):99-104. 2007.

Establishing intensive plantations of fast growing hardwood tree species that have high market values in the forest industry can narrow the gap between Turkey's demand and the supply of quality hardwood products. Black cherry {P. serotina Ehrh.) is a fast growing hardwood species with a high market value Introducing and intensively growing black cherry (BC) in Turkey may significantly reduce the country's quality wood shortage. Adequate seed germination constitutes the first essential step for successful establishments. In this paper, effects of different pretreatments, including artificial and natural stratification, on the seeds of different BC seed sources (SSs) were studied. Pretreatments had substantial effects on the dormancy break1ng and germination behaviours of the SSs. Consecutive periods of complex warm and cold artificial stratification regimes longer than 90 days or natural stratification {where seeds were assumed to be naturally exposed to this complexity) resulted in best dormancy breaking and, in turn, ge1mination among all pretreatments. Deeper dormancy and reduced germination rates of some BC seeds as the altitude of the source increases might suggest an ecological adaptive strategy of the species BC may have deeper morphophysiological dormancy than is commonly believed. Seed size may have a positive effect on seed germination.

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Author(s): Derya Esen, Oktay Yildiz, M. Sarginci, Kani Isik

Section: Seeds

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