Intraspecific variability in cold hardiness of Taurus cedar (Cedruslibani A. Rich.) in Türkiye

被引:0
作者
Bora İmal
Akkın Semerci
Carlos A. Gonzalez-Benecke
机构
[1] Çankırı Karatekin University,Department of Forest Engineering, Faculty of Forestry
[2] Tokat Gaziosmanpaşa University,Department of Forestry and Forest Products, Niksar Vocational School
[3] Oregon State University,Department of Forest Engineering, Resources and Management, College of Forestry
来源
European Journal of Forest Research | 2024年 / 143卷
关键词
Cold hardiness; Lebanon cedar; Visual scoring; Chlorophyll fluorescence; Provenance trial;
D O I
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中图分类号
学科分类号
摘要
To better guide Cedruslibani provenances movement to northerly and higher-altitude sites for afforestation, the limits of hardiness to cold should be better known. In this study, we quantified the cold hardiness of seven C.libani provenances sampled from a provenance trial in Ankara, Türkiye, a site located outside the natural range of distribution of the species. Visual damage observation and chlorophyll fluorometry screening methods were used to assess variation in cold hardiness (LT50, the temperature estimated at which 50% of the needle tissue is damaged) among populations. Overall, C.libani can tolerate winter temperatures down to  − 21.5 °C. Even though there were significant differences in cold hardiness among populations, the maximum difference was only 1.9 °C between the most and the least cold-resistant provenances. Cold tolerance was generally greater for provenances that experienced colder temperatures in March and lower levels of total precipitation in their native ranges. We also conclude that the fluorometry method provides a more efficient and stable comparison of cold hardiness than visual observation for C.libani. The results of this study may be useful for assisted migration and breeding programs, as well as for developing guidelines for genetic materials transfer, to increase productivity or adaptability of C.libani.
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页码:727 / 737
页数:10
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