Kuraklık Stresine Maruz Bırakılan Bazı Doğu Kayını (Fagus orientalis L.) Orijinlerinde Toplam Klorofil İçeriği Değişimleri

Yıl 2024, Cilt: 24 Sayı: 2, 209 - 219, 03.10.2024

Sümeyra Işık Çakmakçı , Sinan Güner

https://doi.org/10.17475/kastorman.1557438

Öz

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<0.05) farklılıklar olduğu, farklılıkların hangi gruplarda olduğunu belirlemek için yapılan Duncan testinde ise orijinlerin tamamının 12 ayrı gruplarda yer aldığı tespit edilmiştir. Orijinlerin klorofil içeriklerinin 2 günde 1 sulama ve hiç sulama yapılmayan rejimlerinde, günde 1 sulama (kontrol) yapılan rejimine kıyasla daha az olduğu anlaşılmıştır.
Araştırma vurguları: Toplam klorofil içerikleri kuraklık stresine maruz bırakılan rejimlerde, kontrol rejimine kıyasla, her orijinde azaldığı fakat İstanbul (180 m) orijininde diğer orijinlere göre bu değişimin daha az olduğu belirlenmiştir.

Anahtar Kelimeler

Doğu Kayını, SPAD-502 Plus, Kuraklık Stresi, Toplam Klorofil İçeriği, Sulama

Total Chlorophyll Content Variations in Some Oriental Beech (Fagus orientalis L.) Origins Exposed to Drought Stress

Öz

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<0.05) differences were detected between the origins, and in the Duncan Test used to determine which groups the differences originated from, it was found that all the origins were in 12 separate groups. It was also understood that the chlorophyll content of the origins was less in the regimes of irrigation once every 2 days and no irrigation at all, compared to the regime of irrigation once a day (control).
Research highlights: It was determined that total chlorophyll contents decreased in all origins in regimes exposed to drought stress compared to the control regime, but this change was less in the Istanbul (180 m) origin than in the other origins.

Anahtar Kelimeler

Oriental Beech, SPAD-502 Plus, Drought Stress, Total Chlorophyll Content, Irrigation

Kaynakça

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