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Tytuł:
Galasy rodzimych gatunków dębu jako potencjalny surowiec garbnikowy
Gall-nuts of native oak species as a potential tannin raw material
Autorzy:
Bilek, M.
Kozlowska-Tylingo, K.
Gostkowski, M.
Staniszewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/980195.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
uboczne uzytkowanie lasu
dab
Quercus
galasy
garbniki
taniny
zawartosc garbnikow
forest utilisation
non−wood forest products
oak
oak gall−nuts
tannins
Opis:
Oak gall−nuts are pathological excrescences on the leaves of oaks (in Poland: Quercus robur L. and Q. petraea Liebl.) created by the Cynips quercusfolii L. The potential medical use of these non−wood forest products should be taken under consideration because of widespread use in folk medicine, but also because of the presence of gall−nuts of Middle Eastern oak species Quercus infectoria in the current Farmakopea… [2017]. The aim of this study was the preliminary analyzes of Quercus robur L. galls in the context of the diversity of the raw material and its possible consequences for the variability in tannin content, and therefore for the therapeutic value. The galls were collected in September 2018 from five living trees forming compact mid−field tree plantation in Podkarpackie Region (SE Poland). To determine the tannin content, hide powder method was used, while mass spectrometry was used for determining the identity of the raw material. The tannin content was found to be between 10.02 ±0.2% and 15.47 ±0.07%. There were no statistical differences between the tannin content of four weight groups of tested gall−nuts. The analysis of mass spectra showed the presence of gallic acid and tannin disintegration products. The results indicate that the tannin content in domestic oak galls is lower than in Quercus infectoria ones, for which less than 20% is required, however Polish galls are still the richest native tannin raw material. It was not proved that the content of tannins in oak galls was influenced by their size. A large variation in tannin content depending on the sample suggests that it might be possible to identify i.e. forest sites or climatic zones, where the obtained gall−nuts will be characterized by the high tannin content.
Źródło:
Sylwan; 2019, 163, 09; 746-753
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie technik biologii molekularnej do detekcji Erysiphe alphitoides (Griffon & Maubl.) U. Braun and S. Takam. w organach roślinnych
Applying the molecular biology techniques to the detection of Erysiphe alphitoides (Griffon & Maubl.) U. Braun and S. Takam. in plant parts
Autorzy:
Roszak, R.
Baranowska, M.
Belka, M.
Behnke-Borowczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/979672.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewa lesne
dab
Quercus
paki
liscie
pedy
maczniak prawdziwy debu
Erysiphe alphitoides
wykrywanie
techniki biologii molekularnej
oak powdery mildew
sessile oak
overwintering
fungal diseases
its
Opis:
Erysiphe alphitoides causes the most common disease of assimilation apparatus of oaks of different age. It is believed that the pathogen overwinters in buds of the host plant or in the cracks of the bark. The aim of the study was to search for the presence of E. alphitoides in buds, leaves, and wood of sessile oak shoots using molecular techniques. Two hypotheses have been tested: (i) oaks are infected by E. alphitoides, and (ii) the pathogen overwinters in the host plant buds. The samples used in the study were collected form sessile oak trees (Miradz Forest District; 52°41'23.197'N, 18°25'33.942'E) in 2017, and consisted of dormant buds (collected in May), young leaves (collected in June), leaves with visible symptoms of the disease (collected in August), shoot with sip and surface layers of wood (collected in December). Additional part of buds was collected in May 2018. The PCR reaction was carried out with primers specific for E. alphitoides and E. hypophylla. For species identification Sanger method was used. The resulting sequences were compared using BLAST algorithm with reference sequences deposited in the NCBI database. Sequences from isolates obtained from leaves showed 97−99% similarity to the reference sequence of E. alphitoides. Pathogen did not occur in the superficial layers of shoots and buds. As some studies show, at very low temperatures (below –20°C), the mycelium of the pathogen dies, therefore further study should be undertaken on wintering of the pathogen causing the powdery mildew disease on oaks. It also should be examined whether the pathogen overwinters in the form of bagnial spores produced in chasmothecia overwintering on leaves, in the leaf buds, or in bark cracks, and whether the wintering site of the pathogen is related to the age of trees and or to the stands where the trees grow.
Źródło:
Sylwan; 2019, 163, 09; 740-745
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena korytarzowej metody uprawy dębu (Quercus sp.) na przykładzie obiektów badawczych w nadleśnictwach Mircze i Kościan
Evaluation of the corridor method for oak (Quercus sp.) cultivation using research objects in the Mircze and Koscian Forest Districts as an example
Autorzy:
Paluch, R.
Gil, W.
Powiązania:
https://bibliotekanauki.pl/articles/1292277.pdf
Data publikacji:
2018
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
drzewa lesne
dab
Quercus
uprawa korytarzowa
ocena hodowlana
hodowla lasu
odnowienia lasu
Nadlesnictwo Mircze
Nadlesnictwo Koscian
oak
corridor method
oak cultivation
forest regeneration
stand tending
Opis:
The corridor method of oak (Quercus sp) cultivation is an old, forgotten silvicultural method. It was developed around the turn of the 19th and 20th century on the south-eastern borders of Poland (Podole, Wołyń) and Russia and made use of other species such as hornbeam, linden and birch as a cover for oak, which is a tree species sensitive to frosts. The nowadays recurring phenomenon of oak disease initiated a search for silvicultural alternatives and thus the usefulness of reviving the corridor method for oak regeneration was investigated by examining existing tree stands established in this way. Our research plots were located in five young stands and two in mature as well as old stands. In the stands of the 2nd and 3rd age classes, the density of oaks was observed to be 1500 - 3500 /ha, which accounted for 30-50%. The density of oak in old stands (7th age class) was similar to model-predicted values. Furthermore, the corridor method gave very good production results as exemplified by the oak stands growing on the fresh broadleaved site, which had a very high stand quality index. In addition, the species composition was observed to diversify throughout these oak stands’ development, thus supporting arguments for the conservation and preservation of oak-hornbeam forests. To summarise, the prerequisites for the success of the corridor method are systematic cuts of young stands (forest cultures and thickets) to inhibit the growth of accompanying undesired species and limiting the number of grazing animals.
Źródło:
Leśne Prace Badawcze; 2018, 79, 1
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wstępne badania nad zmiennością izoenzymową dębów w doświadczeniu proweniencyjnym w Nadleśnictwie Milicz
Preliminary research on izoenzyme variability of oaks in the provenance experiment in the Milicz Forest District
Autorzy:
Zwaduch, P.
Lewandowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/1012982.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
zroznicowanie genetyczne
dab bezszypulkowy
zmiennosc genetyczna
proweniencje
izoenzymy
Quercus petraea
Nadlesnictwo Milicz
Quercus robur
lesnictwo
dab szypulkowy
drzewa lesne
pedunculate oak
sessile oak
provenance
genetic variation
izoenzyme
poland
Opis:
The studies were based on the material collected in the provenance experiment established in the territory of the Milicz Forest District where 78 pedunculate (Quercus robur L.) and sessile oak (Quercus petraea [Matt.] Liebl.) provenances from all over the country were planted in 5 replications. The izoenzyme analyses took in dormant buds from 300 trees of randomly selected 5 pedunculate oak and 5 sessile oak provenances. Variation of 6 enzymatic systems was the subject of the analysis. The studied oak populations exhibited a relatively high level of genetic variation, however, it was lower in comparison with the populations from other regions of Europe. Generally, the variation of the sessile oak was grater than of the pedunculate oak. The calculated genetic distance between the two oak species was 0.0284 and it exceeded genetic distances among the populations within the species.
Źródło:
Sylwan; 2008, 152, 10; 27-35
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inwentaryzacja zasobów drzewnych w urządzaniu lasu w Polsce
Inventory of timber resources in forest management in Poland
Autorzy:
Jaszczak, R.
Powiązania:
https://bibliotekanauki.pl/articles/1015664.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
inwentaryzacja
Polska
zasoby drzewne
lesnictwo
urzadzanie lasu
quercus robur
pedunculate oak
variability
heritability
Opis:
The paper presents the comparison of heritability of height and diameter at breast height (dbh) in 7−11− year−old pedunculate oak trees from 5 provenances and 55 families. The provenance heritability for five successive years was high: 0.19−0.80 for height and 0.59−0.87 for dbh. Family heritability was moderate ranging 0.39−0.52 for height and 0.34−0.49 for dbh, while individual−tree heritability values was the lowest equalling 0.08−0.15 for height and 0.06−0.14 for dbh.
Źródło:
Sylwan; 2008, 152, 05; 14-25
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biomasa i roczna produkcja drzewostanów dębowych Puszczy Niepołomickiej
Biomass and annual production of oak stands in the Niepolomicka Forest
Autorzy:
Orzeł, S.
Ochał, W.
Forgiel, M.
Socha, J.
Powiązania:
https://bibliotekanauki.pl/articles/1018550.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany debowe
Puszcza Niepolomicka
lesnictwo
biomasa
produkcja biomasy
oak stand
biomass
annual biomass production
Opis:
The paper presents the results of the study on biomass volume and annual production of oak stands in the Niepołomicka Forest. The analysis was based on the material collected from 59 circular sample plots where oak accounted for more than 50% of the volume of the tree layer. In the total biomass of the tree layer amounting to about 225.3 t·ha–1, the biomass of the shrub layer (underbrush) is about 2.3 t·ha–1. In the tree layer biomass (about 223 t·ha–1), wood makes up on average 86.4%, bark – 12% and assimilatory apparatus – 1.6%. The share of wood in the biomass increases with the increase of stand age, while that of bark and assimilatory apparatus declines. The proportion of these elements in the dry mass production (on average 9.8 t·ha–1·year–1) is somewhat different. Almost 35% of its volume is assimilatory apparatus whose share increases with stand age. The increment of bark is about 9%, while of wood it is 56% of the annual biomass production of the stands under analysis and slightly decreases with stand age.
Źródło:
Sylwan; 2006, 150, 05; 30-43
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena stopnia uszkodzenia liści drzewostanów dębowych Nadleśnictwa Wołów dotkniętych klęską powodzi
Assessment of leaf damage in oak stands in the flood-affected Wolow Forest Division
Autorzy:
Kuzmiński, R.
Szewczyk, W.
Korczyński, I.
Łakomy, P.
Powiązania:
https://bibliotekanauki.pl/articles/1311485.pdf
Data publikacji:
2015
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
tereny pokleskowe
tereny popowodziowe
drzewostany debowe
drzewa lesne
dab
Quercus
defoliacja
liscie
uszkodzenia lisci
szkodniki roslin
owady
Nadlesnictwo Wolow
flood
defoliation
Wołów Forest Division
oak die-back
pest insects
oak stands
Opis:
This study examines the effect of flood on oak stands in the Wołów Forest Division by assessing the loss of leaf area due to insect feeding as determined in laboratory analyses of samples collected from standing trees. We compared stands, in which water stagnated for at least one month and stands with no water stagnation. It was found that the mean damage to the carbon assimilating organs of stands with stagnating water was lowered by approximately 6% compared to stands that were not affected by flood. Thus, no definite effect of flood contributing to losses of carbon assimilating organs in oak trees could be shown.
Źródło:
Leśne Prace Badawcze; 2015, 76, 3; 297-303
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamika wiosennych zjawisk fenologicznych w drzewostanie dębu bezszypułkowego (Quercus petraea [Matt.] Liebl.)
Dynamics of the spring phenological phenomena in the sessile oak (Quercus petraea [Matt.] Liebl.) stand
Autorzy:
Będkowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/985858.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
fenologia
drzewostany debowe
dab bezszypulkowy
Quercus petraea
wiosna
rozwoj fenologiczny
sessile oak
spring phenology
Opis:
Numerous studies show that in the pedunculate and sessile oaks there are two forms that differ in terms of the spring development of leaves – one can distinguish early and late variants. Acceleration of leaves development gives the particular tree a chance to gain advantage over others, as well as enables to avoid herbivory caused by insects. However, it is fraught with the risk of damage caused by the late frosts. In turn, trees that develop leaves later can avoid losses, but they have to face the shortened growing season. The article presents the results of repeated observations of the spring development of sessile oak trees in about 90−year old stand in central Poland (19.920365° E, 51.837381° N). The trees were observed every week and classified into one of six classes of leaves development – from the absence of bud burst symptoms to the fully−developed leaf. It was found that over time, the share of trees was gradually increasing at higher and higher stages of development, while at the end of the observation period the rate of development of trees was very high. Importantly, at each stage of development, the trees emerged, which proceeded to much faster development than previously, and their share was increasing over time, as shown in the elaborated model of stand development.
Źródło:
Sylwan; 2018, 162, 12; 998-1006
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
O Baublisie raz jeszcze...
About Baublis once again...
Autorzy:
Tomusiak, R.
Zarzyński, P.
Powiązania:
https://bibliotekanauki.pl/articles/1009653.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
pomniki przyrody
dab Baublis
historia
Litwa
lesnictwo
drzewa lesne
'baublis'
common oak
monumental tree
lithuania
Opis:
This paper is a kind of addition to four other articles about famous Lithuanian oak−tree called 'Baublis' published in Sylwan, especially those from 1827 and 2002. The first one, written by Dionizy Paszkiewicz was a description of its cut down in 1812. The latter was a scientific estimation of 'Baublis'es' main parameters (trunk circumference, height, volume, age, etc.) basing on facts from the previous article. However, some new data about this tree were found basing on the parameters of unique building made from its trunk that had survived on Lithuania since the beginning of 1880s. The new estimations of this famous oak−tree size are presented.
Źródło:
Sylwan; 2009, 153, 12; 847-851
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Retrospektywna analiza wybranych właściwych liczb kształtu strzał dębu
A retrospective analysis of the selected true form factors for oak
Autorzy:
Turski, M.
Powiązania:
https://bibliotekanauki.pl/articles/972838.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
dendrometria
lesnictwo
dab
wlasciwa liczba ksztaltu strzaly
drzewa lesne
Quercus
true form factor
oak stem
Opis:
The paper presents a retrospective analysis of the selected form factors for oak stems. The analysis of twelve true form factors (f L/15, f L/10, f L/9, f L/8, f L/7, f L/6, f L/5, f L/4, f 3/10L, f L/3, f 4/10L, f L/2) was done to find the lowest value of the variation coefficient in the successive five−year intervals of tree lives. The relationship between the form factors and dbh over bark, height and slenderness of trees was also analysed.
Źródło:
Sylwan; 2003, 147, 07; 31-39
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kształtowanie się smukłości pni dębu szypułkowego (Quercus robur L.) w zależności od wieku drzew
Forming slendernes of pedunculate oak stems [Quercus robur L.] in dependence of age of trees
Autorzy:
Kaźmierczak, K.
Pazdrowski, W.
Mańka, K.
Szymański, M.
Nawrot, M.
Powiązania:
https://bibliotekanauki.pl/articles/1012526.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
dendrometria
smuklosc drzew
wiek drzew
Quercus robur
lesnictwo
dab szypulkowy
drzewa lesne
slenderness
pedunculate oak
stand stability
age
Opis:
Paper identifies value and variability of slenderness of pedunculate oak stems in age range from 10 to 140 years describing slenderness of tree stems simultaneously using linear and multiplies regression. Strength of the connections between slenderness and selected dendrometrical traits was also defined. Dependence of the slenderness was investigated with respect to height, breast height diameter, and 10−years increment of breast height diameter, volume and 10−years volume increment in specific years of tree life. The slenderness of trees decreases with the growth of breast height diameter, breast height diameter increment, volume and volume increment. In case of height opposite tendency was observed. Dependence of slenderness on breast height diameter, height and age was analysed for all trees altogether as well. Slenderness was described additionally with linear and multivariate empirical equations.
Źródło:
Sylwan; 2008, 152, 07; 39-45
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Konsekwencje hodowlane obumierania dębów
Sylvicultural consequences of oak decline
Autorzy:
Bernadzki, E.
Grynkiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/1018431.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany debowe
hodowla lasu
zamieranie lasow
Quercus
lesnictwo
dab
zamieranie drzew
drzewa lesne
oak decline
stand conversion
transitional communities
Opis:
The rate of oak decline has greatly accelerated in recent years. It has been reported that in October 2005, the amount of standing dead trees in oak stands of 14 Forest District Administrations situated within the Regional Directorate of State Forests in Warsaw exceeded 70,000 m3 and an area of 103 hectares was selected where sanitary fellings need to be applied. The restocking of cut areas in the thinned stands with substitutional species was proposed. Besides, the paper presents a conception of oak regeneration by planting trees in wider spacing, under the shelter of pioneer species (mainly birch), using the tending species (i. a. hornbeam).
Źródło:
Sylwan; 2006, 150, 08; 61-69
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zasięg oddziaływania iniekcji hydrostatycznych w drewnie dębu szypułkowego (Quercus robur L.)
Autorzy:
Zarzyński, P.
Powiązania:
https://bibliotekanauki.pl/articles/1022214.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drewno debowe
iniekcja hydrostatyczna
Quercus robur
lesnictwo
dab szypulkowy
zasieg dzialania
drzewa lesne
hydrostatic injections
sessile oak wood
effect range
Opis:
Hydrostatic injections are the method of applying chemicals directly into the wood of living trees. Laboratory tests proved their usefulness. However, still an open question remained the range of penetration of the liquid fed into the tree this way. To answer this question, a series of experiments were performed, using water with an addition of methylene blue – a dye leaving durable effects in the wood – as the working liquid. This paper depicts the results of this experiment.
Źródło:
Sylwan; 2005, 149, 04; 15-20
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fusarium spp. na nadziemnych organach zamierających dębów - nowe zagrożenie?
Fusarium spp. on the above-ground organs of dying oaks – a new threat?
Autorzy:
Wit, M.
Sierota, Z.
Oszako, T.
Mirzwa-Mróz, E.
Wakuliński, W.
Powiązania:
https://bibliotekanauki.pl/articles/989848.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewa lesne
fitopatologia lesna
dab
Quercus
zamieranie drzew
paki
pedy
grzyby
Fusarium
wystepowanie
zagrozenia roslin
oak decline
fusarium spp.
Opis:
Oak decline is insufficiently described problem. Declining oaks are in various age and the most commonly observed symptoms of the disease include growth inhibition and buds mortality. The dieback occurs periodically, mainly because of the impact of abiotic factors (drought, frost and the lowering of the groundwater level). In this complex phenomenon the biological factors, including numerous species of Chromista (Chromalveolata) and fungi play important role as well. The list of pathogens responsible for the dieback includes numerous species of Pythium and Phytophthora, as well as Biscogniauxia, Discula, Pleurophoma, Botryosphaeria and Diplodia. Among other organisms responsible for the oak decline are fungi belonging to Fusarium species. The aim of this study was to investigate the species composition of pathogens colonizing the dying oak buds including undeveloped or dying shoots obtained from Łomża, Rudka and Czarna Białostocka forest districts (eastern Poland). Sampling of symptomatic shoots of Quercus robur L. was performed in 2013, respecting different parts of tree crowns (top, central and bottom). Mycological material for analysis included mycelium growing on dying shoots after incubation in a chamber and tissue collected from symptomatic shoots and placed on PDA medium. For selected isolates of fungi the identification was confirmed by the PCR analysis using ITS1 and ITS4 primers. Among analyzed fungi Fusarium spp., Alternaria alternata, Cladosporium cladosporioides, Botryosphaeria quercuum and /em>Coniothyrium spp. required special attention. The Fusarium spp. group of fungi dominated with an average frequency of 32%. The molecular analysis revealed the presence of several species including Fusarium avenaceum, Cladosporium cladosporioides, Lophiostoma corticola and Nectria mauritiicola.
Źródło:
Sylwan; 2015, 159, 05; 403-410
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tempo wzrostu wysokości dębu szypułkowego (Quercus robur L.) w dolnej warstwie drzewostanu sosnowego
Height growth rate of pedunculate oak (Quercus robur L.) in lower layer of Scots pine stand
Autorzy:
Paluch, R.
Powiązania:
https://bibliotekanauki.pl/articles/994087.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
hodowla lasu
odnowienia podokapowe
dab szypulkowy
Quercus robur
wzrost roslin
tempo wzrostu
modele wzrostu
pedunculate oak
height growth
undergrowth
Opis:
This study was carried out in north−eastern Poland in 20 Scots pine stands with well−developed lower layer of pedunculate oak. In each stand, 5 highest oak trees were selected. Basing on the stem analysis, a growth model for oak undergrowth in Scots pine stands was elaborated. It can be used for determination the height growth rate in relation to the age and height of oak. Obtained model was compared to the already existing one for oaks growing without canopy [Bruchwald at el. 1996]. Growth rate of undergrowth oaks was significantly delayed in the initial period by 20−30 years.
Źródło:
Sylwan; 2013, 157, 12; 909-916
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 54

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