Estimation of genetic parameters of cone and seed characteristics in clonal seed orchard of spheroid Scots pine

Abstract

Spheroid scots pine (Pinus sylvestris L.var. compacta (Tosun) Ü.Akkemik) clonal seed orchard was established with 26 clones in Karabük-Eflani originating Bolu-Çakmaklar in 2004. Three grafts were randomly selected for each clone. 3-24 cones were collected from each graft per clone. Ten characteristics of cones and seeds of the cones have been measured and evaluated. As averages for two years, it was revealed that the yield of seed from the cone was 2 %, the weight of 1000 seeds was 6 g, the number of seeds in a cone was 12.11 and the seed germination percentage was 45.75 %. In the analysis of variance, it was determined that there were high variations in both clones and years, and there was no variation in the clone year interaction. For ten characteristics, the first-time estimations of broad sense heritability, genetic and phenotypic correlation was varied between 0.25-0.61, 0.23-1.05 and 0.00-0.99, respectively. Findings of the study were intended for management conserving ex situ and adapting to the landscape of spheroid clonal Scots pine seed orchards in Karabük-Eflani and Bolu-Mengen.

Keywords

• Heritability,Genetic correlation,Weight of 1000 seeds,Seed yield

Ebe sarıçamı klonal tohum bahçesi kozalak ve tohum özelliklerinde genetik parametrelerin tahmini

Abstract

Karabük-Eflani’de 2004 yılında kurulmuş, Bolu-Çakmaklar orijinli Ebe sarıçamı (Pinus sylvestris L.var. compacta (Tosun) Ü.Akkemik) klonal tohum bahçesinde 2016 ve 2017 yıllarında 26 klondan rastgele seçilen üçer rametten 3-24 adet kozalak toplanmıştır. Toplanan kozalaklar ve kozalaklardan elde edilen tohumlar ile ilgili on özellik ölçülmüş ve değerlendirilmiştir. İki yılın ortalaması olarak, kozalaktan tohum veriminin % 2, 1000 tane ağırlığının 6 g, kozalaktaki tohum sayısının 12.11 adet ve çimlenme yüzdesinin % 45.75 olduğu ortaya konulmuştur. Yapılan varyans analizinde klonlar ve yıllar arası yüksek varyasyonlar olduğu, klon yıl etkileşiminde ise varyasyon olmadığı belirlenmiştir. On özellik için ilk kez tahmin edilen geniş anlamlı kalıtım derecelerinin 0.25-0.61, genetik korelasyonların 0.23-1.05 ve fenotipik korelasyonların 0.00-0.99 arasında değiştiği görülmüştür. Çalışma ile ortaya konulan bulguların, Karabük-Eflani ve Bolu-Mengen’de bulunan ebe sarıçam tohum bahçelerinin ex situ koruma ve peyzaj amacıyla yönetilmesi için kullanılması hedeflenmiştir.

Keywords

• Kalıtım derecesi,1000 tane ağırlığı,Genetik korelasyon,Tohum verimi

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