Time filter

Source Type

Magnuszewski M.,Samodzielna Pracownia Dendrometrii I Nauki O Produkcyjnosci Lasu | Nowakowska J.A.,Zaklad Hodowli Lasu I Genetyki Drzew Lesnych | Zasada M.,Samodzielna Pracownia Dendrometrii I Nauki O Produkcyjnosci Lasu | Orozumbekov A.,Kirgiski Narodowy University Rolniczy
Sylwan | Year: 2014

The study showed the genetic structure of nine Schrenk spruce stands, which represented altitude and geographical variants in the Tien-Shan mountains in Kyrgyzstan. Comparison between genetic structure of stands was based on frequencies of nuclear microsatellite (SSR) alleles occurring in three DNA loci. The total genetic differentiation of Schrenk spruce populations was low (FST=0.0651). Eight main groups of populations were distinguished in the dendrogram defined by Nei's genetic distances based on micro-satellite markers. © 2014, Polish Forest Society. All rights reserved.


Tkaczyk M.,Zaklad Ochrony Lasu | Nowakowska J.A.,Zaklad Hodowli Lasu i Genetyki Drzew Lesnych | Oszako T.,Zaklad Ochrony Lasu
Sylwan | Year: 2014

In the situation of limited number of pesticides being approved for use in forest nurseries it is necessary to examine new products available on European market that stimulate growth and improve resilience and vitality of seedlings as a part of intgrated plant protection program. Paper presents test of fertilizer Actifos used in seven Polish nurseries in order to stimulate the growth of seedlings. In 64% of cases, Actifos stimulated increament of shoots (significantly for oaks, beeches, pines, spruces and alders) as well as for roots (significantly only for alders and oaks).


Niemczyk M.,Zaklad Hodowli Lasu i Genetyki Drzew Lesnych | Wojda T.,Zaklad Hodowli Lasu i Genetyki Drzew Lesnych | Kantorowicz W.,Zaklad Hodowli Lasu i Genetyki Drzew Lesnych
Sylwan | Year: 2016

The use of biomass for energy purposes is an important European Union policy. In light of the restrictions concerning the use of the full-value wood from forests for energy purposes, short rotation forestry can become an alternative source of woody biomass. In this context, the most promising species is poplar (Populus spp.), productivity of which depends on various aspects such as plant spacing, cutting cycles, fertilization and cultivar characteristics. The aim of this study was to assess the possibility of cultivation of ten selected poplar clones from the section Aigeiros and Tacamahaca in short-rotation coppice in the climatic conditions of Poland. An experiment was set up in the north-eastern part of Poland in the Wichrowo Forest District. Survival, tree stocking, and biomass yield were compared. Productivity of clones was examined in five-year cutting cycle. The highest dry biomass yield (7.8 t/ha/yr) was achieved by the clone 'Hybrida 275'. In contrary, the biomass yield of the worst clone ('AF-8') amounted to 2 t/ha/yr. Some other Italian clones, such as 'AF-6' and 'MON' were not able to adapt to the local conditions at all and were excluded from the experiment. Because of the need to implement the full economic analysis of short rotation poplar plantations, it would be important to study propagation ability of certain currently studied varieties of poplar in subsequent rotations and with different production cycle period length up to the end of biomass production on a given plantation. Resistance to diseases of energy poplar plantations should also be researched.


The paper concerns the occurrence of small-leaved lime in the Polish forests on the basis of stand description contained in the main database of the State Forests. The analysis includes the geographical occurrence of lime in all forest layers and according to age class of stands with lime as well as their habitat and soil preferences. Special attention was paid to the stands with lime as the dominant species. © 2014, Polish Forest Society. All rights reserved.


Szyp-Borowska I.,Zaklad Hodowli Lasu i Genetyki Drzew Lesnych | Zawadzka A.,Zaklad Hodowli Lasu i Genetyki Drzew Lesnych | Zajaczkowski K.,Zaklad Hodowli Lasu i Genetyki Drzew Lesnych
Sylwan | Year: 2012

The purpose of our study was to estimate genetic diversity of Prunus avium in natural populations. Genetic studies were carried out in 27 wild cherry populations sampled from several Polish tree stands. Chloroplast DNA variation was assessed and two haplotypes were identified. Theirs distribution divided populations into two groups. Haplotype H1 was present in 11 of 27 populations and H2 in 16 populations. The PCR-SSR technique was used to detect nuclear DNA diversity. Three highly polymorphic SSR (microsatellite) primer pairs were used to describe the genetic variation. Heterozygosity values ranged from 0.500 to 0.633, while gene diversity (PIC) from 0.75 to 0.79. This study demonstrated that SSR fingerprinting with cpDNA diversity, can be used for preliminary characterization of Prunus avium populations.

Loading Zaklad Hodowli Lasu i Genetyki Drzew Lesnych collaborators
Loading Zaklad Hodowli Lasu i Genetyki Drzew Lesnych collaborators