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Tytuł:
Analysis of results from a 59-years-old provenance experiment with Scots pine (Pinus sylvestris L.) in Lubień, Poland
Analiza wyników 59-letniego doświadczenia proweniencyjnego z sosną zwyczajną (Pinus sylvestris L.) w Lubieniu w Polsce
Autorzy:
Chmura, D.J.
Powiązania:
https://bibliotekanauki.pl/articles/41499.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Scotch pine
Polska
Pinus sylvestris
tree
straightness
Lubien
survival
productivity
Opis:
In 1992 and 1997 there measurements were made on an experimental area which is a part of an international provenance experiment with Scots pine (Pinus sylvestris L.), established by IUFRO in 1938. This paper presents results obtained in these measurements. It is shown that best provenances are from Baltic countries and Central Europe. The most productive provenances had the most crooked stems. Scandinavian provenances had straight trees but low survival and productivity.
W 1992 i 1997 przeprowadzono kolejne pomiary na jednej z powierzchni badawczych doświadczenia proweniencyjnego z sosną zwyczajną, założonej z inicjatywy Międzynarodowej Unii Leśnych Placówek Badawczych (IUFRO) w 1938 roku w Polsce. Dane przedstawione w tej pracy wskazują, że sosny środkowoeuropejskie i z krajów bałtyckich dają duży przyrost masy w połączeniu z dobrą jakością. Najbardziej produktywne są proweniencje z Niemiec i południowo- zachodniej Polski, ale jakość drzew jest niska. Proweniencje skandynawskie mają natomiast proste drzewa, lecz niską przeżywalność i produktywność. Obie grupy pochodzeń nie powinny być rozprzestrzeniane w Polsce.
Źródło:
Dendrobiology; 2000, 45
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identyfing alien genotypes and their consequences for genetic variationin clonal seed orchards of Pinus sylvestris L.
Autorzy:
Przybylski, P.
Kowalczyk, J.
Odrzykoski, I.
Matras, J.
Powiązania:
https://bibliotekanauki.pl/articles/2077755.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
genetic analysis
Pinus sylvestris
tree breeding
isoenzyme marker
grafting error
Opis:
This study investigates the rates of grafting and planting errors that occur in seed orchards, and evaluates their effects on the genetic diversity and relatedness of genotypes. The study used three clonal Scots pine seed orchards of differing ages and clonal composition located in the forest districts of Susz, Pniewy and Zdrojowa Góra, Poland. Maximum breeding ability within a seed orchard requires isolated from external sources of pollen, and have no alien genotypes inside the orchard. We used 13 isoenzyme markers to determine the genotypic identity of ramets and compared the number of genotypes of the actual current ramet population (W1) with genotypes comprising the originally intended plus trees (designated as W0) to estimate the genotypic assignment error rate per orchard. For both W0 and W1, we calculated the effective number of clones and the relative effective number of clones. Ramet assignment errors were detected in all three seed orchards. Gnotypic errors ranged from 5.8% to 37.7% across orchards. A total of 46 alleles were found, with the mean number of alleles per locus ranging from 2.77 to 3.23. At individual loci, the level of observed heterozygosity was variable. Alien genotypes had negligible effects on seed orchard heterozygosity. The Fst values between seed orchards amounted to 0.6% between Susz and Pniewy and 1.1% between Susz and Zdrojowa Góra. The effect on genetic variation of ramet assignment errors was small and influenced genetic diversity only in the case of the Susz seed orchard. However, our results suggest that negative effects of alien genotypes can occur on breeding value of seeds from analysed seeds orchards.
Źródło:
Dendrobiology; 2019, 81; 40-46
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stand dynamics in natural Scots pine forests as a model for adaptation management?
Autorzy:
Vacek, S.
Vacek, Z.
Bilek, L.
Remeš, J.
Hůnová, I.
Bulušek, D.
Král, J.
Brichta, J.
Powiązania:
https://bibliotekanauki.pl/articles/2077666.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Pinus sylvestris
forest dynamics
stands structure
air pollution
climatic factors
Central Europe
Opis:
The paper deals with the dynamics of structure, diversity and growth of natural pine stands without direct human impact during the ten-year period in Nature Reserve (NR) Kostelecké bory, Czech Republic. The objective was to determine the main characteristics of the spontaneous development of Scots pine (Pinus sylvestris L.) forest stands in relation to their naturalness, ecological stability and adaptation to climate change and air pollution stress. Horizontal and vertical structure and species diversity of the tree layer, dead wood and natural regeneration of each permanent research plot (PRP) were evaluated (n = 6, 50 × 50 m /0.25 ha/, Northern Bohemia, 410–425 m above sea level). The average ring series of PRPs were correlated with the climatic data (precip- itation, temperature) according to individual years from the Doksy climatic station, and the air pollution data (SO2 in 1988–2015, NOX and AOT40F – ozone exposure in 1992–2015) from Radimovice station. In 2016, the stand volume increased by 26.0% to 136 m3 ha−1 (108 m3 ha−1 in 2006) and the volume of dead wood increase by 127.2% to 27 m3 ha−1 (12 m3 ha−1 in 2006). The horizontal structure of tree layer and natural regeneration was predominantly aggregated to random. More distinct changes in biodiversity and structural characteristics occurred in the natural regeneration (21.5%) compared to tree layer (2.8%). The precipitation had a significantly higher effect on radial growth compared to temperature. The lack of pre- cipitation in growing season and high temperature in previous autumn and winter were limiting factors for growth. Climatic factors had significant effect on diameter increment in July of the current year (P < 0.01) and June of the current and previous year (P < 0.05). Radial growth was negatively correlated with SO2 con- centrations (P < 0.01) and ozone exposure (P < 0.05). NOX concentrations had low effect on radial growth. The natural stand dynamics had positive effect on biodiversity and functional integrity of natural pine eco- systems.
Źródło:
Dendrobiology; 2019, 82; 24-42
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Early height growth of Scots pine (Pinus sylvestris L.) progenies from Polish clonal seed orchards
Autorzy:
Chmura, D J
Giertych, M.
Rozkowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/41068.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Scotch pine
seed stand
Polska
Pinus sylvestris
seed orchard
growth
progeny testing
Opis:
Seed orchards are expected to produce geneticaly improved seeds while maintaining a sufficiently large genetic diversity. Field trials comparing open-pollinated Scots pine progeny from seed orchards and commercial seed stands were established at five climaticaly different sites in Poland. The paper presents first height measurements obtained on trees at age 4. Seedlots differed significantly, but there was no strong evidence of better performance of clonal seed orchards progeny over the progeny of production seed stands. There was no distinct geographical trend in the origin of the best growing seedlots, but populations from the northern part of country tend to perform better than south-eastern ones. Progeny of the local production seed stands at their native environment were not the best, except in one case. A strong site effect reflecting a fertility gradient of the planting sites was found.
Źródło:
Dendrobiology; 2003, 49
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possibility of identification of negative extreme climatic events using Pinus sylvestris tree-rings in Transdanubia, Hungary
Autorzy:
Misi, D.
Nafradi, K.
Powiązania:
https://bibliotekanauki.pl/articles/41465.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
identification
climatic event
Pinus sylvestris
Scotch pine
drought
tree ring
Transdanubia region
Hungary
Opis:
Negative climatic extremes occur more frequently in the last decades. Since the Carpathian Basin is highly concerned in their impacts it is important to investigate prior events and estimate the response of the environment to them to get useful information for the future. In our work we selected a stand which is seriously affected by unfavorable summer conditions to examine what kind of fingerprint the negative extreme events have left. We investigated narrow rings and intra-annual density fluctuation to describe years with extreme events. Their stabilized frequency was tested against climatic and groundwater data, as well as against aridity index to determine climate-growth relationships using Pearson and Spearman’s correlations. Our results show positive significant correspondence between summer precipitation and treering growth together with negative connection with summer temperature. The Spearman’s correlation between stabilized frequency of intra-annual density fluctuations, narrow rings and climate data ended with significant relationship in summer. According to the comparison of intra-annual density fluctuation and narrow ring data with drought periods it can be said that narrow rings are better tool for the examination of negative extreme events in summer.
Źródło:
Dendrobiology; 2016, 75
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic variability of Pinus sylvestris populations from IUFRO 1982 provenance trial
Autorzy:
Androsiuk, P.
Urbaniak, L.
Powiązania:
https://bibliotekanauki.pl/articles/40971.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
genetic variability
Scotch pine
Pinus sylvestris
plant population
molecular marker
provenance trial
Opis:
Provenance trials were designed to analyse the quantitative responses of tree species to environmental variables found in different experiment location. However, we have still limited knowledge how natural and artificial selection affects genetic variation of the species populations gather in such experimental sites. We have used bulked DNA-based RAPD and ISJ analysis to investigate genetic diversity and differentiation of Scots pine populations from two Polish locations of IUFRO 1982 provenance trial placed in Kórnik and in Supraśl. Applied categories of DNA markers differed in terms of revealing genetic diversity of the species. Ten RAPD primers applied in the study yielded a total of 75 bands, of which 21 (28%) and 15 (20%) were polymorphic in Kórnik and in Supraśl, respectively. Six ISJ primers revealed 42 bands of which 4 (9.52%) and 14 (33.3%) were polymorphic in Kórnik and in Supraśl, respectively. The genetic diversity and differentiation was low, as expressed by He=0.071 and He=0.085, and by genetic distance values which ranged from 0.0 to 0.240 (on average 0.081) and from 0.017 to 0.188 (on average 0.094) for Kórnik and Supraśl, respectively. Location of provenance trial appeared to have a significant influence on revealed level of genetic polymorphism and pattern of interpopulation differentiation. However, genetic structure found for analysed Scots pine provenances from IUFRO 1982 in Kórnik was also confirmed for Supraśl experimental site. In the light of available data we also discussed the influence of historical migration routes and gene flow on observed genetic variation of the species.
Źródło:
Dendrobiology; 2014, 71
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mycorrhizal status of Pinus sylvestris L. nursery stock in Poland as influenced by nitrogen fertilization
Autorzy:
Rudawska, M.
Leski, T.
Gornowicz, R.
Powiązania:
https://bibliotekanauki.pl/articles/41277.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
forest ecosystem
Polska
nursery
Pinus sylvestris
nitrogen fertilization
ectomycorrhizal fungi
fungi
morphotype
Opis:
Indigenous mycorrhizal colonisation of one (1/0) and two (2/0) year old Scots pine (Pinus sylvestris L.) seedlings from forest nurseries situated in the north-west part of Poland was investigated. Seedlings were fertilized after a schedule designed to satisfy their requirements which resulted from soil analysis of each nursery. In autumn needle nitrogen concentration and mycorrhizal status were estimated. As a rule seedlings 1/0 obtained high doses of fertilizers, and their needle nitrogen concentration highly exceeded the recommended optimal level above which mycorrhiza formation is greatly restricted. Highly negative correlation was found between the nitrogen status of foliage and mycorrhizal quantitative and qualitative colonisation estimated in the abundance class of 0-5. When internal nitrogen level was low, several ectomycorrhizal morphotypes were found on roots of tested plants. Excessive nitrogen fertilization decreased root ramification pattern and along with increased pH promoted ectendomycorrhizal symbiosis. Two-year-old seedlings (2/0) were characterised by significantly lower nitrogen concentration in the needles which resulted in much higher ectomycorrhizal colonisation. Ectendomycorrhizal symbiosis in the case of 2/0 seedlings was scarce. The results indicate that natural colonisation in nurseries is dependent on the soil management practices, especially nitrogen fertilization. Optimalization of nitrogen fertilization may intensify ectomycorrhizal colonisation of the nursery stock from indigenous fungal species and improve the growth of Scots pine seedlings in bare-root nurseries and plantations.
Źródło:
Dendrobiology; 2001, 46
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Growth response of different tree species (oaks, beech and pine) from SE Europe to precipitation over time
Autorzy:
Stojanović, Dejan B.
Levanič, Tom
Matović, Bratislav
Stjepanović, Stefan
Orlović, Saša
Powiązania:
https://bibliotekanauki.pl/articles/956967.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
standardized precipitation index (spi)
climate change
tree mortality
quercus sp.
fagus sylvatica
pinus sylvestris
Opis:
Changing climatic conditions can have various consequences for forest ecosystems, from increasing frequencies of forest fires, ice and windstorm events to pathogen outbreaks and mass mortalities. The Standardized Precipitation Index (SPI) was chosen for the evaluation of drought impact on the radial growth of trees after extensive preliminary testing of various calculated monthly climate parameters from the CARPATCLIM database. SPI was calculated for periods between 3 and 36 months for different sites (lowland and mountainous parts of Serbia, Southeast Europe), from which Quercus robur, Q. cerris, Fagus sylvatica and Pinus sylvestris samples were acquired. Bootstrapped Pearson’s correlations between SPI monthly indices and radial growth of tree species were calculated. We found that 12-month SPI for summer months may be a good predictor of positive and negative growth of different species at different sites. The strongest positive correlations for five of six tree-ring width chronologies were between 12-month June and 14-month September SPI, which implies that high growth rates can be expected when the autumn of the previous year, and winter, spring and summer of the current year, are well supplied with precipitation, and vice versa (low precipitation in given period/low growth rates).
Źródło:
Dendrobiology; 2018, 79; 97-110
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Shikimate dehydrogenase (E.C. 1.1.1. 25 ShDH) alleles as potential markers for flowering phenology in Pinus sylvestris
Autorzy:
Prus-Glowacki, W.
Sukovata, L.
Lewandowska-Wosik, A.
Nowak-Bzowy, R.
Powiązania:
https://bibliotekanauki.pl/articles/41516.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Scotch pine
Pinus sylvestris
shikimate dehydrogenase
allele
isoenzyme
chloroplast DNA
nuclear DNA
flowering phenology
Opis:
The aims of this study were 1) to determine the variability in the flowering phenology of Scots pine (Pinus sylvestris L.) clones in a seed orchard and 2) to compare the genetic structure and genetic markers (13 isozyme loci and 5 chloroplast and 3 nuclear DNA microsatellite loci) among groups of clones that are differentiated by flowering phenology. Using the timing of male inflorescence development, 57 plus trees represented by their clones in a seed orchard were classified into three phenological groups: early-, intermediate-, and late-flowering. The microsatellites showed no significant differences in the genetic structure of the analyzed phenological groups. However, the frequency of allele 2 at the shikimate dehydrogenase A locus (ShDH A 2) differed significantly between the groups of early- and late-flowering trees and between the groups of intermediate- and late-flowering trees. In addition, a significant difference in the frequencies of the genotype ShDH A 11 was observed between the intermediate- and late-flowering groups. Nei’s genetic distance indicated that the late-flowering group was the most genetically distant among the phenological groups. These results suggest that the ShDH A locus might be considered as isoenzymatic marker that differentiates these flowering groups of Scots pine clones. At several isozyme and DNA loci, the presence of private alleles in each group of pines was observed. However, these alleles cannot serve as markers of Scots pine flowering time because of their low frequencies.
Źródło:
Dendrobiology; 2015, 73
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sexual asymmetry in Scots pine seed orchards
Autorzy:
Danusevicius, J
Powiązania:
https://bibliotekanauki.pl/articles/40980.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Scotch pine
pollen
reproductive process
flowering process
orchard
Pinus sylvestris
sexual asymmetry
seed
Opis:
In seed orchards of Scots pine Pinus sylvestris L., the reproductive process is affected by the variation among the clones in fertility and abundance of male and female flowering. There were significant differences between the clones in relative proportion of male and female strobili as well as in seed yield. Thus, clones in Scots pine seed orchards may differentiate into "seed" and "pollen" clones. The least fertile clone produce 4.6 times less pollen than the most fertile clone, while cone yield of the least yielding clones was 5.5 times smaller than that of the most yielding clones. Amount of the pollen dispersed at the upper part of the crowns was two times greater than at the base of the crowns. The minimum amount of pollen needed for successful fertilization of an ovule was 1500 grains per cm2. There was no significant relationship between sexual asymmetry of the parental clones and height growth of their progeny.
Źródło:
Dendrobiology; 2002, 47 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seedling recruitment in peat bogs in contrasting hydrologic conditions
Autorzy:
Ejankowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/41107.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Betula pubescens
ground water level
seedling
peat bog
hydrological condition
disturbance
Pinus sylvestris
Opis:
The study examined the effect of variation in hydrology on seedling recruitment of shrubs, trees and herbs in peat bogs. The establishment of plants and hydrologic conditions were followed in two peatlands in the Polesie Zachodnie region, Eastern Poland. Meteorological conditions in the study sites ranged from very dry (2006) to very wet (2007) and strongly affected ground water level in the bogs. The emergence of woody species typical for advanced vegetation succession was higher in forest-bog, while the recruitment of typical peat bog plants was higher in open bog. Disturbance in the vegetation positively influencedemergence of typical peat bog species and Betula pubescens, but the effect was only foundin the dry year. Only in Pinus sylvestris did recruitment increase in wet seasons. The results suggested that an increase in the number of woody species in peat bogs may be enhanced during relatively wet seasons and that disturbance in the vegetation cover are not required for seedling recruitment of these plants.
Źródło:
Dendrobiology; 2010, 64
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of polluted environment on the female and male strobili bearing of European Scots pine provenances
Autorzy:
Chalupka, W.
Rozkowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/41518.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Scotch pine
pollen
male flower
polluted environment
provenance
Pinus sylvestris
male
female cone
female
Opis:
Studies on female and male strobili production as well as on pollen production and viability were performed at a polluted (Luboń) and a control (Kórnik) sites. Female strobili bearing per tree and total length of male strobili produced per tree were significantly higher in Luboń than in Kórnik and the stand density and tree crown exposition to sunlight were likely responsible for that result. Percentage of pollen germination was not affected by any variables studied. Neither provenance nor provenance x site interactions were found.
Źródło:
Dendrobiology; 2000, 45
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of aluminium on Pinus sylvestris seedlings mycorrhizal with aluminium-tolerant and aluminium-sensitive strains of Suillus luteus
Wpływ glinu na siewki sosny zwyczajnej inokulowane dwoma szczepami grzyba Suillus luteus: tolerancyjnym i wrażliwym na glin
Autorzy:
Rudawska, M.
Kieliszewska-Rokicka, B.
Leski, T.
Powiązania:
https://bibliotekanauki.pl/articles/41269.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
extramatrical mycelium
ergosterol
Pinus sylvestris
Suillus luteus
seedling
forest soil
ectomycorrhizal fungi
fungi
pine seedling
aluminium
Opis:
Mycorrhizal syntheses of pine seedlings were conducted with Suillus luteus (L.) S.F. Gray, a strain No 14 characterised by high tolerance to Al3+ ions and a strain No 62, sensitive to aluminium. The experiment was performed as a semi-sterile culture in a peat-perlite medium with Al3+ ion concentration of 11 mM. Abundant coralloid and cluster mycorrhizas of S. luteus were formed on roots of the inoculated plants at the beginning of the experiment. Aluminium treatment limited mycorrhizal morphotypes to single and dichotomous and significantly reduced the total number of mycorrhizal tips but had no effect on extramatrical mycelium development in the potting substrate. Al treatment did not affect growth of the above-ground part of the tested plants but significantly reduced root growth of mycorrhizal seedlings. The effect of Al on the internal nutrient status was variable and not very much pronounced. A considerable amount of Al was absorbed by the roots and translocated to the shoots. Mycorrhiza formation with both strains of S. luteus did not prevent Al3+ translocation to the upper parts of the tested seedlings. The results suggest that low pH and high Al availability may harmfully influence mycorrhizal symbiosis of Scots pine (Pinus sylvestris L.) by anega tive effect on fine-root production and fewer short root tips available for colonisation rather than through a direct negative effect of Al3+ ion concentrations on extramatrical mycelium in the soil.
Syntezę mikoryzową siewek sosny (Pinus sylvestris) z odpornym naglin szczepem Suillus luteus nr 14 i wrażliwym na glin szczepem nr 62 przeprowadzono w warunkach półsterylnych w szklarni. Po nawiązaniu mikoryzy siewki przez 6 miesięcy traktowano roztworem glinu o stężeniu 11 mM przy pH = 3,8. W warunkach kontrolnych (bez glinu) oba szczepy S. luteus tworzyły obfite mikoryzy pojedyncze oraz dichotomicznie i koralowato rozgałęzione. Traktowanie glinem zredukowało morfotypy mikoryzowe do pojedynczych i dichotomicznych oraz znacząco zmniejszyło całkowitą liczbę wierzchołków mikoryzowych na korzeniach siewek, ale nie ograniczyło rozwoju grzybni ekstramatrykalnej. Wwarunkach kontrolnych (bez glinu) rozwój grzybni ekstramatrykalnej, mierzony zawartością ergosterolu w podłożu był podobny w przypadku obu testowanych szczepów. Traktowanie glinem spowodowało pewien wzrost rozwoju grzybni ekstramatrykalnej szczepu tolerancyjnego i nieznaczne zahamowanie wzrostu szczepu wrażliwego. Glin ograniczył znacząco wzrost korzeni, natomiast nie stwierdzono negatywnego wpływu glinu na wzrost części nadziemnych siewek. Siewki traktowane glinem absorbowały w korzeniach znaczne ilości tego metalu, który był także przemieszczany do pędów. Stwierdzono niewielki wpływ glinu na zawartość pierwiastków mineralnych w siewkach. Badania wykazały, że przy zastosowanym wysokim stężeniu glinu szczep Nr 14 wyselekcjonowany w warunkach in vitro jako odporny na glin, nie zahamował przemieszczania jonów Al3+ do części nadziemnych siewek sosny. Wyniki sugerują, że szkodliwe działanie jonów glinu na symbiozę mikoryzową w warunkach niskiego pH polegara czej naogra niczeniu liczby wierzchołków korzeni drobnych, które potencjalnie mogą tworzyć mikoryzy, niż nabezpośrednim wpływie na grzybnię mikoryzową.
Źródło:
Dendrobiology; 2000, 45
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enzymatic activity of actinomycetes from the genus Streptomyces isolated from the bulk soil and rhizosphere of the Pinus sylvestris
Autorzy:
Golinska, P.
Dahm, H.
Powiązania:
https://bibliotekanauki.pl/articles/41609.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
enzyme activity
Actinomycetes
Streptomyces
isolation
bulk soil
forest soil
rhizosphere
Pinus sylvestris
chitinase
protease
pectinase
cellulase
Opis:
The enzymatic activity (chitinolytic, proteolytic, pectolytic andcellulolytic) of twenty strains of Streptomyces isolated from soil and rhizosphere of Scots pine was analyzed. Most strains produced chitinases, catalyzing the degradation of chitin, the main component of fungal cell walls including fungi pathogenic for plants. This activity was about 4 times higher in the presence of Fusariumoxysporum than Rhizoctonia solani mycelium or chitin flakes. The number of the proteolytic strains was also significant. In general, rhizosphere and soil organisms synthesizedcomparable amounts of these enzymes. Over half of the analyzed Streptomyces strains produced pectolytic enzymes (polygalacturonase, pectin lyase and pectate lyase). This property was more common among rhizosphere than among soil strains. The Streptomyces strains also showedcellulolytic activity (endocellulases, exocellulases) – enzymes decomposing basic components of cell walls of plant and lower fungi (cellulose). The cellulolytic activity was differentiated and depended on the Streptomyces strain. Conclusion of our studies is that Streptomyces are the microorganisms more chitinolytic andproteolytic than pectolytic and cellulolytic.
Źródło:
Dendrobiology; 2011, 65
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of different methods of site preparation on natural regeneration of Pinus sylvestris in Eastern Poland
Autorzy:
Aleksandrowicz-Trzcinska, M.
Drozdowski, S.
Brzeziecki, B.
Rutkowska, P.
Jablonska, B.
Powiązania:
https://bibliotekanauki.pl/articles/41158.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
natural regeneration
Pinus sylvestris
Scotch pine
seedling density
seedling growth
seedling quality
soil scarification
Polska
Opis:
Mechanical site preparation (MSP) is commonly used to enable forest regeneration of clear-cuts. Less intense methods may be more suitable from an environmental point of view, but such a method can result in the lack of natural regeneration. We compare the influence of three MSP methods on natural regeneration of Scots pine. The methods differ in their degree of soil disturbance. The effects of MSP by forest plough (FP), active plough (AP), and forest cutter (FC) on density, quality, and biometric parameters of one-year old seedlings were determined. The highest density of seedlings was obtained in the FP treatment (188,000 seedlings ha–1). The seedling density was significantly lower in the AP method (121,000 seedlings ha–1), and in the FC variant (36,000 seedlings ha–1). The best quality seedlings were found in the FC variant, and the worst – in the FP treatment. Most biometric parameters of seedlings did not differ by MSP method, except for the root length and root:shoot ratio. By the end of growing season, in the FP treatment, 1-year old seedlings formed a top bud more than twice as often as the seedlings from the AP and FC treatments. The FP method led to the best Scots pine natural regeneration. The results obtained in the FC variant were not as good as in the FP method, though they were still acceptable from the silvicultural point of view. The FC method was the least intensive method of site preparation, yet it is considered the most appropriate from the environmental (soil protection) point of view.
Źródło:
Dendrobiology; 2014, 71
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 39

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