Comparison of genetic parameters between optimal and marginal populations of oriental sweet gum on adaptive traits
Küçük Resim Yok
Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Sisef-Soc Italiana Selvicoltura Ecol Forestale
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Genetic parameters of 9 oriental sweetgum (Liquidambar orientalis Mill.) populations were estimated at a common garden test. Open-pollinated seeds were collected from 16-27 families for each population. The common garden test was established in 2009 using a randomized complete block design in 25 blocks with single tree plot, with each block included 223 families. Breast height diameter, height and crown diameter were measured at the age of five. The purpose of study was to compare the genetic parameters of optimal and marginal populations and to assess the findings for genetic conservation. The study revealed significant variability in all traits evaluated. In variance components, variation among populations was three times higher than that of families. Individual heritability estimates for breast height diameter, height and crown diameter pooled across the whole dataset (marginal and optimal populations) were 0.21 +/- 0.04, 0.27 +/- 0.04 and 0.11 +/- 0.03 and additive genetic coefficients of variation were 13.4%, 9.1% and 7.1%, respectively. Individual heritability estimates for breast height diameter, height and crown diameter in marginal and optimal populations were 0.27 +/- 0.10, 0.19 +/- 0.08 and 019 +/- 0.08 and 0.19 +/- 0.04, 0.29 +/- 0.05 and 0.09 +/- 0.03, respectively. Additive genetic coefficients of variation for breast height diameter, height and crown diameter were 16.7%, 8.3% and 10.8% in marginal and 12.8%, 9.1% and 6.2% in optimal populations, respectively. While breast height diameter and crown diameter were more heritable for marginal populations, height was more heritable for optimal populations. These findings are discussed in terms of genetic conservation of oriental sweet gum.
Açıklama
Anahtar Kelimeler
Liquidambar orientalis, Genetic Variation, Individual Heritability, Gene Conservation, Climate Change
Kaynak
Iforest-Biogeosciences and Forestry
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
11
