Student:	Deniz ÇOLAK
Supervisor:	Prof. Dr. Zeki YAHYAOĞLU
Department:	Orman Mühendisliği
Institution:	Graduate School of Natural and Applied Sciences
University:	Karadeniz Technical University Turkey

Title of the Thesis:	A RESEARCH ON FROST STRESS RESISTANCE OF THE SCOTS PINE (Pinus sylvestris L.), ANATOLIAN BLACK PINE (Pinus nigra Arn. subsp. pallasiana (Lamb.) Holmboe) AND LEBANON CEDAR (Cedrus libani A. Rich.)
Level:	M.Sc.
Acceptance Date:	10/5/2012
Number of Pages:	41
Registration Number:	i2454

Summary:

Scots Pine (Pinus sylvestris L.), Anatolian Black Pine (Pinus nigra Arn. subsp.

pallasiana (Lamb.) Holmboe) and Lebanon Cedar (Cedrus libani A. Rich.) were subjected

to the artificial freezing tests. The plants were exposed to 3 different freezing temperatures

(-150C, -250C and -450C) for 16 hours.

The damages occur at -250C in Lebanon Cedar and at -450C in Anatolian Black

Pine when we were subjected artificial frost. But in these two temperatures there had been

no important damage determined in Scots Pine.

Electrolyte leakage analyses were used for assessment of damages on the needles of

seedlings. The results exhibited that, cold damage affected electrolyte leakage and

chlorophyll fluorescence (Fv/FM) of needles and they showed good correlation.

Key Words: Scots Pine (Pinus sylvestris L.), Anatolian Black Pine (Pinus nigra Arn. subsp.

pallasiana (Lamb.) Holmboe), Lebanon Cedar (Cedrus libani A. Rich.), Frost

stress resistance, Electrolyte leakage