Pak. J. Bot., 38(3): 735-743, 2006. | Back to Contents | ||||
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Updated: 09-07-09 | ||||
EFFECTS OF DIFFERENT PRETREATMENTS ON THE GERMINATION OF DIFFERENT WILD CHERRY (PRUNUS AVIUM L.) SEED SOURCES DERYA EŞEN, OKTAY YILDIZ, EMRAH ÇIÇEK, SEMSETTIN KULAÇ AND ÇIGDEM KUTSAL
Abstract:
Wild cherry (Prunus avium L.) is an important native hardwood
species of Turkey with its high-valued wood. It is also listed as a
'noble hardwood' in Europe with strongly emphasized conservation, sustainable
use and genetic potential. Wild cherry seeds are deeply dormant, and
level of dormancy may vary significantly within the species. This causes
substantial difficulties during seedling production. The effects of
different artificial and natural pretreatments in seed germination of
three Turkish wild cherry seed sources was examined. The effects of
different 0.1 % citric acid soaking treatments prior to cold stratification
on the seed germination of a separate seed source was also examined.
Pretreatments made significant effects on speed of and cumulative seed
germination with substantially different seed source responses. Successive
periods of complex, warm and cold artificial stratification regimes
rather than cold period alone as well as natural stratification substantially
improved the dormancy breaking and germination of wild cherry seeds.
Seeds from K. Eregli were superior over those of the other seed sources
in both speed and cumulative rate of germination. Seeds soaked in 0.1%
citric acid for 48 hours followed by a 90-day cold stratification period
enhanced germination significantly, yet longer acid exposures decreased
seed germination substantially.
Abant Izzet Baysal Üniversitesi Düzce Orman Fakültesi
Faculty of Forestry, Konuralp Yerleskesi, Konuralp, 81620, Düzce, Turkey. |
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