Kastamonu University Journal of Forestry Faculty 1303-2399 1309-4181 Kastamonu Üniversitesi 10.17475/kastorman.1557438 Forestry Sciences (Other) Ormancılık (Diğer) Total Chlorophyll Content Variations in Some Oriental Beech (Fagus orientalis L.) Origins Exposed to Drought Stress Kuraklık Stresine Maruz Bırakılan Bazı Doğu Kayını (Fagus orientalis L.) Orijinlerinde Toplam Klorofil İçeriği Değişimleri Işık Çakmakçı Sümeyra ARTVİN ÇORUH ÜNİVERSİTESİ, ORMAN FAKÜLTESİ, ORMAN MÜHENDİSLİĞİ BÖLÜMÜ Güner Sinan ARTVIN CORUH UNIVERSITY, FACULTY OF FOREST, DEPARTMENT OF FORESTRY ENGINEERING 10 03 2024 24 2 209 219 04 14 2024 06 11 2024 Copyright © 2001, Kastamonu Üniversitesi Orman Fakültesi Dergisi 2001 Kastamonu Üniversitesi Orman Fakültesi Dergisi

Aim of study: Oriental beech (Fagus orientalis Lipsky.) seedlings of 4 different origins were divided into different irrigation regimes as "irrigation once a day (control)", “irrigation once every 2 days" and "no irrigation at all" in the 2nd growth period. The main aim of this study was to determine which origin was more tolerant to drought. Area of study: Beech seedlings were produced from seeds originating from Bolu, Istanbul, Zonguldak and Giresun in the Greenhouse of Artvin Coruh University, Faculty of Forestry.Material and methods: The beech seeds used in the study were collected by the Regional Directorates in 2021. The seeds were planted in polyethylene tubes Greenhouse. As of July 2023, Oriental beech seedlings in their second growth period were subjected to three different irrigation, total chlorophyll contents were measured by using the hand-held SPAD-502 Plus device and the data were analyzed statistically.Main results: In the variance analysis made according to different irrigation regimes in terms of total chlorophyll contents, statistically significant (p

Çalışmanın amacı: 4 farklı orijinli Doğu kayını (Fagus orientalis Lipsky.) fidanları 2. büyüme döneminde "günde 1 sulama (kontrol)”, "2 günde 1 sulama” ve "hiç sulamama” olarak farklı sulama rejimlerine ayrılmıştır. Hangi orijinin kuraklığa daha toleranslı olduğunun belirlenmesi bu çalışmanın ana amacıdır. Çalışma alanı: Bolu, İstanbul, Zonguldak ve Giresun orijinli tohumlardan Artvin Çoruh Üniversitesi, Orman Fakültesi Serasında kayın fidanları yetiştirilmiştir.Materyal ve yöntem: Araştırmada kullanılan kayın tohumları 2021 yılında ilgili Bölge Müdürlükleri tarafından toplanmıştır. Toplanan tohumlar Serada polietilen tüplere ekilmiştir. Temmuz 2023 itibariyle 2. büyüme dönemindeki Doğu kayını fidanları üç farklı sulama rejimine tabi tutulmuştur. Toplam klorofil içerikleri SPAD-502 Plus el tipi cihazı kullanılarak ölçülmüştür ve veriler istatistiksel olarak analiz edilmiştir.Temel sonuçlar: Toplam klorofil içerikleri bakımından farklı sulama rejimlerine göre yapılan varyans analizlerinde orijinler arasında istatistiksel olarak anlamlı (p

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