Student:	Gülistan ERDEM
Supervisor:	Prof. Dr. Ali Ömer ÜÇLER
Department:	Forest Engineering
Institution:	Graduate School of Natural and Applied Sciences
University:	Karadeniz Technical University, Turkey

Title of the Thesis:	A RESEARCH ON SEED’S SOURCE OF COMMON ALDER (Alnus glutinosa subsp. barbata (C.A. Mey.) Yalt.) YALT.) SEEDS AND SOME PROCEDURES’ EFFECTS ON THE GERMİNATİON
Level:	M.Sc.
Acceptance Date:	25/1/2007
Number of Pages:	77
Registration Number:	i1774

Summary:

In this study, Common alder (Alnus glutinosa subsp. barbata (C.A. Mey.) Yalt.)

seeds were taken from five different areas including Espiye-1, Espiye-2, Akçaabat, Maçka

and Kanuni campus. In addition to these, some seeds were collected from Kanuni campus

on four different times as a material for this research.

Evaluations have been made on the germination percentages on the tree base of

Common alder (Alnus glutinosa subsp. barbata (C.A. Mey.) Yalt.) seeds used as a material

source, taking the tree as a base. Given the Alnus glutinosa subsp. barbata (C.A. Mey.)

Yalt. seeds, this research aims examine the origin, seed collection time, a 15 minute hot

germination process and the individual effects of a 2,5 month cold stratification in

experiments were conducted on germination by sea salt with four different concentrations

(%1, %2, %4, %6) including different seed collection times in Kanuni campus origin and

the best performed on germinated individuals in each sample origin.

When analysis of variance was done by the help of SPSS (values at the significant

levels of α= 0,05), it was determined that there are significant differences between origin,

hot water pretreatment, light and salt on the percentages of germination. Besides, it has

been indicated there factors, seed collection time, hot water pretreatment, ligt and cold

stratification and salt cause significant differences on the campus origin seeds collected in

different times .

Key Words: Common alder (Alnus glutinosa subsp. barbata (C.A. Mey.) Yalt.), Origin,

Germination percentage, Hot Water Pretreatment, Cold Stratification, Light

Treatment, Salt Treatment, Seed Collection Time