Genetic variation in height, diameter and second flushing in four-year old maritime pine progeny tests in Türkiye
Yükleniyor...
Dosyalar
Tarih
2022
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
A maritime pine (Pinus pinaster Ait.) breeding program was ini-tiated in Türkiye by selecting plus trees from plantations across the country. Quantifying genetic variation in growth traits is essential for this program. Four-year old trees from 140 open-pollinated maritime pine families were assessed for height (HT), root collar diameter (D) and number of shoots in the fourth growing season (S) in three progeny test plantations (Kefken, Gebze and Çatalca) in northwest Türkiye. Growth was greater in Kefken, followed by Gebze and Çatalca. Both indivi-dual tree (???????2 ) and family mean (???????2 ) heritability estimates were greatest for HT (???????2 =0.22 and ???????2 =0.77) followed by D (0.16 and 0.59) and S (0.08 and 0.45). While genetic correlation between HT and D was strong (???????????? =0.72), S was correlated moderately with HT (0.56) and weakly with D (0.11). Genotype × environment interaction was significant only for D. While modest genetic gains (up to 15.20 % over the average of family means) from selections at age four seem possible for growth, changes in patterns of genetic variation and interrelationships among the traits as the trees age remains to be explored in the future.
Açıklama
Anahtar Kelimeler
Pinus pinaster, Genetic gain, Heritability, Genetic corre-lations, Tree breeding
Kaynak
Silvae Genetica
WoS Q Değeri
Q3
Scopus Q Değeri
Cilt
71
Sayı
1
Künye
Atmaca,C.,Temel,F.,Taştan,Y. & Eken,B.(2022).Genetic Variation In Height, Diameter and Second flushing In Four-year Old Maritime Pine Progeny Tests In Türkiye. Silvae Genetica, 71(1). 99-106.
