Correlation between the phenology of leafing and growth characteristics of Douglas-fir provenances in Serbia

Yıl 2018, Cilt: 68 Sayı: 1, 16 - 21, 01.01.2018

Vera S. Lavadinovic , Vukan M. Lavadinović Ljubinko Rakonjac Zoran Poduška İlija Djordjević

Öz

The
study of periodic plant life cycle events, or phenology, is of great importance
both in the process of species introduction and in the period of its adaptation
to new environmental conditions. We assumed that the leaf-out process
correlates with the elements of plant growth.  The research we focused on these dependencies
in order to select the provenances which would be the most suitable for
introduction. The research was aimed at investigating the dependencies of
leafing on the height, diameter, and height increment of Douglas-fir
provenances within the experiment in Serbia. The experiment was established
using native seed material originating from different provenances from a part
of the natural range of ​​Douglas-fir distribution in North America. Therefore,
it has a significant effect on the elements of plant growth. The obtained data
were analyzed using descriptive statistics, analysis of variance, regression
and correlation. It was concluded that the correlation between the time of
leaf-out (bud break) and morphological characters of Douglas-fir trees of
different provenances was statistically weak. The correlation was the strongest
between the time of leaf-out and the height of plants.

Anahtar Kelimeler

Douglas-fir, provenance, leaf-out, height, height increment

Sırbistan’da Douglas göknarının gelişim özellikleri ile yapraklanma fenolojisi arasındaki korelasyon

Öz

Periyodik
bitki hayat döngüsü olaylarını inceleyen fenoloji, türlerin başlangıç süreci ve
de yeni çevre koşullarına adaptasyon sürecinde önemlidir. Yapraklanma sürecinin
bitkinin büyüme unsurlarıyla ilişkili olduğunu düşündük. Bu çalışmada, Sırbistan’da Douglas göknar ağacının yetiştirilmesi için en
uygun olan kaynakları seçmek amacıyla bu faktörlere odaklandık. Yapraklanmanın
yükseklik, çap ve yükseklik artışına olan bağımlılığının incelenmesi amaçlandı.
Deney Kuzey Amerika’da doğal Douglas göknarı dağılımı gösteren bölgeden
farklı kaynaklardan alınan doğal tohum materyali kullanılarak yapıldı. Bu
nedenle, bitkinin gelişimi unsurları üzerinde anlamlı etkiler gözlendi. Elde
edilen veriler tanımlayıcı istatikler, varyans analizi, regresyon ve korelasyon
kullanılarak değerlendirildi. Yapraklanma (tomurcukların patlaması) zamanı ile
farklı kaynaklardan alınan Douglas göknarının morfolojik özellikleri arasındaki
korelasyon istatiksel olarak zayıftı. Diğer yandan, yapraklanma zamanı ile
bitkilerin yükseklikleri arasında daha güçlü bir ilişki izlendi.

Anahtar Kelimeler

Pseudotsuga menziesii, başlangıç, yapraklanma, yükseklik, yükseklik artışı

Kaynakça

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