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Effect of
stratification treatments on germination of Sorbus
torminalis L. Crantz (wild service tree) seeds with
different origins
Mustafa Var, Banu Bekci* and Deryanur
Dinçer
Department of Landscape Architecture, Faculty of Forestry,
Karadeniz Technical University, 61080, Trabzon, Turkey.
*Corresponding author.
E-mail:
bekcibanu@hotmail.com.
Tel: 00904623772872.
Accepted 19 February, 2010 |
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Seed characteristics of wild service tree’s (Sorbus
torminalis L. Crantz) fruits collected from 4 different
regions of the Black Sea region in Turkey and their
germination ratio in different environments were considered.
The fruits used in the study were collected from trees that
are very close to each other. Collected seeds were subjected
to cold stratification of +2°C in an environment of 50% peat
+ 50% perlite in 4 different periods. Measurements done on
the seeds used in the planting process show differences with
respect to origins. The average size of seeds of Artvin
origin was 6.68 mm, average dimater was 3.16 mm and 1000
grains weight was 2.81 g; average size of seeds of Trabzon
origin was 6.04 mm, average diameter was 3.67 mm and 1000
grains weight was 3.70 g; average size of seeds of Bartın
origin was 5.23 mm, average diameter was 2.88 mm and 1000
grains weight was 1.98 g, while the average size of seeds of
Samsun origin was 5.59 mm, average diameter was 3.36 mm,
1000 grains seed weight was 3.07 g. The seeds used in this
study were sown in 3 different mediums at the beginning of
April. When ratios of seed germination were analyzed,
maximum germination occured in the 4 months stratification.
Although S. torminalis L. Crantz seeds have
germination ratio of 5 – 6%, in this study the maximum
germination was seen in seeds from Trabzon origin which were
planted in an environment of 80% peat + 20% stream sand,
with a ratio of 96.6%, while the minimum germination was
seen in Bartın origin seeds that were planted in an
environment of 80% peat + 20% stream sand, with a ratio of
13.3%.
Key words:
Sorbus torminalis L. Crantz, wild service tree,
germination, stratification, seed. |
