Genetic variations among and within the populations of Calabrian pine (Pinus brutia Ten.) in Turkey

Yıl 2017, , 691 - 702, 20.12.2017

Osman Topacoglu Hakan Şevik Ahmet Sıvacıoglu Ferhat Kara

https://doi.org/10.17475/kastorman.333492

Öz

Aim of study: Generic variety is an important criterion for the
sustainability of economically important tree species. The aim of this study
was to determine the differences among registered seed stands of Calabrian pine
(Pinus brutia Ten.) based on some
morphological traits in Turkey

Material and
Methods: For this purpose, seed samples from 14 registered
seed stands dominated by the species were obtained from the Forest Tree Seed
and Tree Breeding Research Directorate of Turkey. Thirteen morphological traits
of the seedlings including the germination percentage, survival rate, survival
rate/germination percentage ratio, root-collar diameter (when seedlings were
40-45 days old), hypocotyl length, cotyledon number, cotyledon length,
cotyledon width, root-collar diameter (when seedlings were 1-year old),
epicotyl length, needle length, needle width, and branch number were monitored.

Main results: The obtained data was analyzed using the Cluster and
Penrose analysis. The Cluster and Penrose analysis showed that there were
significant differences among and within the Pinus brutia seed stands in terms
of the morphologic characteristics. Genetic variances among the populations
were much lower than those within the populations.

Research highlights: The
study suggested that high genetic variation within the population may be an
occasion for the genetic improvement in breeding programs

Anahtar Kelimeler

Calabrian pine, Genetic variation, Heritability, Morphological traits

Türkiye’deki Kızılçam (Pinus brutia Ten.) Populasyonları arasında ve içindeki genetik varyasyon

Öz

Çalışmanın amacı: Genetik varyasyon, ekonomik açıdan önemli ağaç türlerinin
sürdürülebilirliği için önemli bir kriterdir. Bu çalışmada, Türkiye’deki
Kızılçam (Pinus brutia Ten.) tohum
meşcerelerinde bazı morfolojik özelliklere bağlı olarak genetik farklılıkların
belirlenmesi amaçlanmıştır.

Materyal ve Yöntem: Bunun için; tohum örnekleri Orman Ağaçları ve Tohumları Islah Araştırma
Entitüsü Müdürlüğünde kayıtlı 14 adet kızılçam tohum meşcerelerinden elde
edilen tohumlar ile gerçekleştirilmiştir. Fideciklerden elde edilen13
morfolojik özellikte ( çimlenme yüzdesi,yaşama yüzdesi, yaşama yüzdesi/
çimlenme oranı, kökboğazı çapı (40-45 günlük fideciklerde), hipokotil uzunluğu,
kotiledon sayısı ,kotilodon uzunluğu, kotilodon 
cotyledon genişliği,  kök boğazı
çapı (1- yaşlı fideciklerde), epikotil uzunluğu, ibre uzunluğu, ibre genişliği
ve dal sayısı) ölçüm yapılmıştır.

Sonuçlar: Elde edilen veriler Cluster ve Penrose istatistiki analizlerle test
edilmiştir. Analizlerde Kızılçam tohum meşcerelerinde ve meşcere arasında
morfolojik özellikler bakımından önemli farklılıkların bulunduğu görülmektedir.
Genetik farklılıkların popülasyonlar arasında, popülasyonlar içindeki
farklılıklardan daha az olduğu tespit edilmiştir.

Araştırma vurguları: Bu
çalışma popülasyonlar içindeki yüksek genetik varyasyonun ıslah programlarında
genetik kazanç için bir fırsat olabileceğini göstermektedir

Anahtar Kelimeler

Kızılçam, Genetik varyasyon, Heridabilite, Morfolojik karakterler

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