Dendrobiology

Items from 1 to 20 out of 553 results

article

Factors determining natural regeneration of yew (Taxus baccata L.) in the Kórnik Arboretum

Giertych P.

Dendrobiology > 2000 > 45

All yew plants in the Kórnik Arboretum have been plotted onto maps of individual sectors and analysed with respect to location category (“near trunk”, “under canopy”, “in the open”), size (assumed to reflect age), genus of tree associated with in the “near trunk” category and environmental factors characterising the respective Arboretum sectors. There is practically no regeneration “in the open” (0...

article

Dendrobiology - background and the future

Przybylski T.

Dendrobiology > 2000 > 45

article

Response of Scots pine (Pinus sylvestris), Norway spruce (Picea abies) and Douglas fir (Pseudotsuga menziesii) needles to environment pollution with flourine compounds

Karolewski P., Siepak J., Gramowska H.

Dendrobiology > 2000 > 45

The objective of the study was to determine differences in the response of trees of three species: Pinus sylvestris, Picea abies and Pseudotsuga taxifolia to environment pollution with fluorine compounds. The amounts of free and complexed fluorine (FA) and total fluorine (FB) were determined in the needles of trees of the three species growing in a polluted area and in an area considered free from...

article

Effect of polluted environment on the female and male strobili bearing of European Scots pine provenances

Chalupka W., Rozkowski R.

Dendrobiology > 2000 > 45

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...

article

Effects of sulphur, fluoride and heavy metal pollution on the chlorophyll fluorescence of Scots pine (Pinus sylvestris L.) needles

Pukacki P.M.

Dendrobiology > 2000 > 45

The photochemical activity of photosystem II (PSII) was measured by chlorophyll a fluorescence intensity of Scots pine needles, from trees growing in various forest experimental areas exposed to air and soil pollution. Fluorescence techniques was used as a no-invasive method of detection injuries of the photosynthetic apparatus. Chlorophyll fluorescence parameters such as PSII photochemical efficiency...

article

The effect of SO2 on sucrose efflux from source leaves of poplar

Lorenc-Plucinska G.

Dendrobiology > 2000 > 45

article

Antagonism of higher fungi to Heterobasidion annosum (Fr.) Bref. in laboratory conditions

Napierala-Filipiak A., Werner A.

Dendrobiology > 2000 > 45

Interactions between 42 higher fungi and six strains of Heterobasidion annosum (Fr.) Bref., representing P and S intersterility groups were studied in vitro. Part of the higher fungi was represented by strains of ectomycorrhizal fungi indigenous to old disease centres caused by H. annosum in pine stands. Variation in antagonism to the pathogen was observed both within and between the species. The...

article

Effect of aluminium on Pinus sylvestris seedlings mycorrhizal with aluminium-tolerant and aluminium-sensitive strains of Suillus luteus

Rudawska M., Kieliszewska-Rokicka B., Leski T.

Dendrobiology > 2000 > 45

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...

article

Variability of Pinus uncinata Ramond ex DC as expressed in needle traits

Boratynska K., Bobowicz M.A.

Dendrobiology > 2000 > 45

Two-year needles were collected from 42 trees from 5 localities in Spanish Pyrenees. The needles were analysed in respect to 15 morphological and anatomical traits. Data obtained were subject of multivariate statistical analyses. The most stable traits appear to be width of epidermis cells, width and thickness of the needles and ratio of the last two characters. Number of the resin canals and the...

article

Physiological activity of ectomycorrhizas in a moderately polluted forest (Ratanica catchment, Southern Poland)

Kieliszewska-Rokicka B., Kurczynska E.U., Leski T.

Dendrobiology > 2000 > 45

Ectomycorrhizas of Scots pine (Pinus sylvestris L.) and beech (Fagus sylvatica L.) were sampled in a mature forest ecosystem exposed for more than 40 years to moderate levels of gaseous and dust pollutants. Soil of the forest site was characterised by low pH and accumulation of heavy metals (Pb, Mn, Zn, Cu, Cd, Fe). Mycorrhizal vitality and enzyme activity of the root-surface and soil acid phosphatase...

article

Analysis of results from a 59-years-old provenance experiment with Scots pine (Pinus sylvestris L.) in Lubień, Poland

Chmura D.J.

Dendrobiology > 2000 > 45

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...

article

Sorbaria species cultivated in Poland

Tomaszewski D.

Dendrobiology > 2001 > 46

Specimens of the genus Sorbaria cultivated in Polish dendrological collections have been examined. It appears that in Poland only 3 species are cultivated: S. sorbifolia, S. kirilowii and S. tomentosa. Some supposed hybrids of S. sorbifolia and S. kirilowii or S. tomentosa have been found in the Arboretum in Kórnik and Botanical Gardens in Poznań and Warsaw. A new, supplemented distribution map, a...

article

The yew (Taxus baccata L.) population in Knyazhdvir Nature Reserve in the Carpathians (Ukraine)

Boratynski A., Didukh Y., Lucak M.

Dendrobiology > 2001 > 46

The natural population of yew in the Knyazhdvir Nature Reserve was described and its status has been analyzed. It was stated that more than 22 000 specimens of yew grow there and it is the most numerous population of the species in Ukraine. The most important factor for Taxus baccata occurrence there are the presence of calcium carbonate and humidity of the soils. The height and diameter structures...

article

Content of carotenoids in needles of Pinus sylvestris L. growing in a polluted area

Matysiak R.

Dendrobiology > 2001 > 46

Carotenoids (neoxanthin, violaxanthin, lutein and β-carotene) present in plant cell play a role in photoprotection. Industrial pollution causes oxidative stress in plants, while carotenoids react with free radicals and dissipate the excess of excitation energy. In this way carotenoids prevent the negative influence of free radicals on metabolism and can even restore some of the damages. This is confirmed...

article

Mycorrhizal status of Pinus sylvestris L. nursery stock in Poland as influenced by nitrogen fertilization

Rudawska M., Leski T., Gornowicz R.

Dendrobiology > 2001 > 46

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...

article

The yew (Taxus baccata L.) of the Cisowy Jar reserve near Olecko

Iszkulo G.

Dendrobiology > 2001 > 46

The present paper describes the current situation of yews in the Cisowy Jar Reserve: number, their state of health, height and diameter structure, and the sex ratio. In the result only 25 yews were found. Their state of health was relatively good, but many yews that grew on very heavily shaded stands were characterized by little height accretion and greater leaf reduction than those growing on more...

article

The influence of shade on phenolic compounds in Scots pine

Giertych M.J.

Dendrobiology > 2001 > 46

The influence of light reduction on the growth and phenolic compounds contents in Scots pine trees and seedlings was studied. Results of the first experiment in field conditions show that shade causes an increase of phenolic compounds and in the second experiment with seedlings under controlled shading conditions the results were opposite. It is suggested that the factor insolation should be paid...

article

Anatomy of abscission zone of Betula pendula (Roth.) leaves from trees growing under different levels of pollution

Dobrowolska I., Kurczynska E.U., Dmuchowski W.

Dendrobiology > 2001 > 46

A study was carried out on the leaf abscission zone from birch trees growing on polluted sites (two) and a non-polluted site (one). Samples for anatomical investigation were collected from six trees on each site, during three succeeding vegetation seasons. It was observed that in trees growing at the polluted sites: 1) maturation of the abscission zone was faster, 2) the protective layer was thinner...

article

Changes in starch distribution within an embryonic shoot of Norway spruce (Picea abies (L.) Karst.) before resumption of mitotic activity

Guzicka M.

Dendrobiology > 2001 > 46

The above results supplemented earlier research on the structure and development of Norway spruce embryonic shoots and focuses on changes in starch distribution in winter and early spring. Starch accumulation and mobilization is characteristic of cells that play an important role in morphogenesis. The observed starch distribution within an embryonic shoot suggests that starch indicates the places...

article

Woody flora of Hydra (Argosaronic Islands, Greece)

Browicz K.

Dendrobiology > 2001 > 46

From 5 to 27 May, floristic dendrological field studies were conducted on Hydra. the wild flora of trees and shrubs comprises 37 species belonging to 34 genera and to 21 families. An alphabetical list of cultivated woody species is added, including fruit trees.

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INFONA - science communication portal

Dendrobiology

Factors determining natural regeneration of yew (Taxus baccata L.) in the Kórnik Arboretum

Dendrobiology - background and the future

Response of Scots pine (Pinus sylvestris), Norway spruce (Picea abies) and Douglas fir (Pseudotsuga menziesii) needles to environment pollution with flourine compounds

Effect of polluted environment on the female and male strobili bearing of European Scots pine provenances

Effects of sulphur, fluoride and heavy metal pollution on the chlorophyll fluorescence of Scots pine (Pinus sylvestris L.) needles

The effect of SO2 on sucrose efflux from source leaves of poplar

Antagonism of higher fungi to Heterobasidion annosum (Fr.) Bref. in laboratory conditions

Effect of aluminium on Pinus sylvestris seedlings mycorrhizal with aluminium-tolerant and aluminium-sensitive strains of Suillus luteus

Variability of Pinus uncinata Ramond ex DC as expressed in needle traits

Physiological activity of ectomycorrhizas in a moderately polluted forest (Ratanica catchment, Southern Poland)

Analysis of results from a 59-years-old provenance experiment with Scots pine (Pinus sylvestris L.) in Lubień, Poland

Sorbaria species cultivated in Poland

The yew (Taxus baccata L.) population in Knyazhdvir Nature Reserve in the Carpathians (Ukraine)

Content of carotenoids in needles of Pinus sylvestris L. growing in a polluted area

Mycorrhizal status of Pinus sylvestris L. nursery stock in Poland as influenced by nitrogen fertilization

The yew (Taxus baccata L.) of the Cisowy Jar reserve near Olecko

The influence of shade on phenolic compounds in Scots pine

Anatomy of abscission zone of Betula pendula (Roth.) leaves from trees growing under different levels of pollution

Changes in starch distribution within an embryonic shoot of Norway spruce (Picea abies (L.) Karst.) before resumption of mitotic activity

Woody flora of Hydra (Argosaronic Islands, Greece)

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