Дослідження впливу фосфітів як стимуляторів відпірності дерев дуба звичайного (Quercus robur L.) до збудників з роду Phytophthora на території Кротошинське плато (Польща)
| Autor: | Miłosz Tkaczyk, H. H. Hrynyk, Tomasz Oszako |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Abiotic component
0303 health sciences geography Plateau geography.geographical_feature_category biology Resistance (ecology) 030306 microbiology education 030305 genetics & heredity Crown (botany) Biodiversity Root system biology.organism_classification Quercus robur 03 medical and health sciences Horticulture General Earth and Planetary Sciences ознаки коріння морфолого-таксаційні показники дерев патогени дефоліація lcsh:SD1-669.5 Phytophthora lcsh:Forestry General Environmental Science |
| Zdroj: | Науковий вісник НЛТУ України, Vol 29, Iss 8, Pp 9-24 (2019) |
| ISSN: | 2519-2477 1994-7836 |
| Popis: | The territory of the Krotoszyn Plateau is one of the largest compact oak complexes in Poland. The area is characterized by significant biodiversity, and negative phenomena that have been occurring over a long period of time and are associated with the weakening of oak stands can lead to their death in the area. One of these factors is increasingly called the activity of pathogens of the genus Phytophthora. The object of our study is phosphite-treated and control oak trees growing in oak forest stands in the Krotoszyn Plateau (Poland). The purpose of the study is to evaluate the activity of phosphites as stimulants of the resistance of common oak (Quercus robur) to the pathogen of the genus Phytophthora and the possibility of increasing their viability and general sanitary status in the territory of the Krotoszyn Plateau. The aim of the study is to establish a link between root system damage, crown health (defoliation and vitality of sprout), the presence of pathogens in soil, and analysis of the relationship between morphological and assessments features of common oak trees, signs of fine and mother root of trees. For this purpose, trial areas were installed on the territory of the Krotoszyn Forestry Area of the Regional Directorate of State Forests in Poznan (Poland), where oak stands were treated with Kalex and Actifos preparations. Thirty treated trees and 30 control trees were selected for comparative analysis. A statistically substantiated difference in the mean values of the studied root traits for the treated phosphites and control trees was established. The combined influence of biotic and abiotic factors on the growth of trees and the formation of their root systems in the investigated stands is found to be similar. Due to the presence of pathogens of the genus Phytophthora in the soil, trees treated with phosphites have the best values of the state of the crown, which was used as an indicator of the general health status of the trees under study. The analysis of changes in mean values of root traits showed a difference in the formation of these traits in healthy, damaged and fading phosphites-treated and control trees. Due to certain features, the dependence of the degree of defoliation and the synthetic index Syn on the corresponding morphological and assessments features of the trees and root features is formalized. The obtained regression equations allow explaining the trends and making an approximate forecast of modeled dependencies for the phosphites-treated and control trees. |
| Databáze: | OpenAIRE |
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