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<p>An artificial population of <i>Abies alba</i> Mill., was studied in the Polish part of the Białowieża Forest. It consists of 12 half-sib lines originating from the Tisovik Reserve in the Belarusian part—the most north-eastern natural site of silver fir in Europe. The main objective of the study was to evaluate the adaptability, productivity, and physiological condition of these trees and to test whether they maintain high growth performance outside the natural range. Additionally, the study aimed to determine the relationship between their growth parameters, fluorescence characteristics, and biotic stress by insect pests. In total, 20 phenotypically superior trees were selected from 1918 ones and analyzed. The length of the needles and their moisture content were also measured. The <i>Dreyfusia nordmannianae</i> Eckstein 1890 has a strongly negative impact on tree health, which was reflected in markedly reduced chlorophyll fluorescence parameters in infested individuals. Chlorophyll fluorescence parameters (PI<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(_{\text {abs}}\)</EquationSource> </InlineEquation>—Performance Index for Absorption, Fv/Fm—maximum quantum efficiency of PSII, and Area—area above the induction curve) were measured in late winter and spring. Despite harsher climatic conditions the studied trees showed good growth (diameter and height reaching up to 28.7 cm and 19.5 m) and photosynthetic performance (average value of Fv/Fm at the level of 0.8). The results support the use of this autochthonous genetic material in a grafted seed orchard of <i>A. alba</i> in north-eastern Poland, while highlighting the need to consider biotic stress and the exploratory character of the present dataset.</p>

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Adaptive performance of autochthonous silver fir (Abies alba Mill.) outside its natural range: growth and chlorophyll fluorescence in the Białowieża Forest

  • 期刊论文

  • 发表日期：

    2026年4月3日

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  • Aleh Marozau,
  • Ewelina Bagińska,
  • Hazem Mohamed Kalaji,
  • Konrad Wilamowski,
  • Tomasz Oszako,
  • Piotr Borowik

摘要

An artificial population of Abies alba Mill., was studied in the Polish part of the Białowieża Forest. It consists of 12 half-sib lines originating from the Tisovik Reserve in the Belarusian part—the most north-eastern natural site of silver fir in Europe. The main objective of the study was to evaluate the adaptability, productivity, and physiological condition of these trees and to test whether they maintain high growth performance outside the natural range. Additionally, the study aimed to determine the relationship between their growth parameters, fluorescence characteristics, and biotic stress by insect pests. In total, 20 phenotypically superior trees were selected from 1918 ones and analyzed. The length of the needles and their moisture content were also measured. The Dreyfusia nordmannianae Eckstein 1890 has a strongly negative impact on tree health, which was reflected in markedly reduced chlorophyll fluorescence parameters in infested individuals. Chlorophyll fluorescence parameters (PI \(_{\text {abs}}\) —Performance Index for Absorption, Fv/Fm—maximum quantum efficiency of PSII, and Area—area above the induction curve) were measured in late winter and spring. Despite harsher climatic conditions the studied trees showed good growth (diameter and height reaching up to 28.7 cm and 19.5 m) and photosynthetic performance (average value of Fv/Fm at the level of 0.8). The results support the use of this autochthonous genetic material in a grafted seed orchard of A. alba in north-eastern Poland, while highlighting the need to consider biotic stress and the exploratory character of the present dataset.