Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Taxus" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-14 z 14
    Tytuł:
    Influence of herbivory pressure on the growth rate and needle morphology of Taxus baccata L. juveniles
    Autorzy:
    Kýpeťová, Marina
    Walas, Łukasz
    Jaloviar, Peter
    Iszkuło, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/956958.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    taxus baccata l.
    herbivory grazing
    regeneration
    sapling growth
    Opis:
    Damage by herbivore grazing negatively influences the development of subsequent forest generations. Little is known about the long-term impacts of grazing and interactions between grazing and light conditions on sapling growth after the cessation of herbivory impact. In this study, Taxus baccata saplings were grown over a period of four years in artificial shading at 2, 8, 30 and 100% of full sunlight (described as initial light). These saplings were planted in fenced and unfenced plots in a mixed forest in Poland. After six years with no protection from grazing, deer pressure was eliminated by fencing. In this study, we analysed sapling growth and needle morphology five years after deer suppression. Overall, grazing had a negative significant impact on the growth rate and needle morphology of T. baccata saplings. Saplings damaged by herbivores had a height increment approximately one-third that of non-grazed saplings. The grazed yew saplings had a lower needle area and length and a higher specific leaf area (SLA) than non-grazed saplings. Initial and current light conditions did not influence tree growth rates and needle morphology. However, we found positive correlations between sapling height and both leaf area and leaf length and a negative correlation between sapling height and SLA. Browsed yews also had a greater tendency to form polycormic (multi-stemmed) individuals. Lower growth rates, smaller needles and polycormic stems indicate a strategy of “escaping” herbivory pressure even five years after elimination of deer pressure.
    Źródło:
    Dendrobiology; 2018, 79; 10-19
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Postglacial migration dynamics helps to explain current scattered distribution of Taxus baccata
    Autorzy:
    Iszkulo, G.
    Pers-Kamczyc, E.
    Nalepka, D.
    Rabska, M.
    Walas, L.
    Dering, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/41150.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    yew
    Taxus baccata
    migration dynamics
    endangered species
    Quaternary
    human impact
    competition
    Opis:
    Taxus baccata L. has a scattered distribution and the decline of yew woodlands is observed across the entire species range. Passively protected populations in the central and northern part of their distribution are declining without human intervention. However, the establishment of new yew populations is observed in habitats that have been significantly transformed by humans. The following question need to be answered: why do yews find better in environmental conditions that have been strongly modified by humans compared to natural systems? The Quaternary history might be the key to understand the current yew situation. As suggested by palaeobotanical studies, pollen of T. baccata was observed at optima of the interglacials, but in subsequent periods, it has been displaced by that of other shade-tolerant species. Pollen diagrams indicate that after the last glaciation, the yew did not appear earlier than other shade-tolerant species and did not have the opportunity to become common in occurrence, as in previous interglacial periods. As a result, yews occur only as relict populations within environmental islands where the competition with other shade-tolerant species is low. The negative human impact on yew is well-documented, but limitations resulting from the biology of this species are also very important. T. baccata is a species whose current scattered distribution may explain the Quaternary history. Yew situation is better in artificial conditions because people reduce competition from other trees species and deer pressure. Possible positive impact of human on yew distribution in the past is also discussed. The current biological condition of this species suggests the need for active protection.
    Źródło:
    Dendrobiology; 2016, 76
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seasonal fluctuations of photosynthetic pigments content in Taxus baccata needles
    Autorzy:
    Zarek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/41084.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    seasonal fluctuation
    photosynthetic pigment content
    Taxus baccata
    needle
    pigment
    sex
    age
    chlorophyll
    Opis:
    Yew is a coniferous, evergreen, dioecious species. The objective of the study was to present a comprehensive characteristic of changes occurring throughout the year in terms of the content of photosynthetic pigments and related compounds in the needles of yew, depending on the sex of individuals and age of needles. Eight compounds, particularly chlorophyll a (Chl a), chlorophyll b (Chl b), carotenoids (Car), protoporphyrin IX (PPIX), magnesium protoporphyrin IX (MgPPIX), protochlorophyllide (Pchlide), chlorophyllide a (Chlide a), and chlorophyllide b (Chlide b), were subjected to quantitative analysis. Based on the several parameters under study, significant differences between male and female individuals were observed, while most commonly, the largest differences were reported in the autumn and winter period. They were related to the content of Chl a, Chl b and Chl/Car ratio. The remaining compounds showed no significant differences according to the sex and were slightly different only in single periods. For all the studied parameters except for Chl/Car ratio, interaction between sampling dates and sex was not statistically significant. Significant differences between the needles of different age were observed only in terms of the content of Chl b, MgPPIX, Pchlide, Chlide b, and Chl a/b ratio, and these differences were always caused by the current-year needles.
    Źródło:
    Dendrobiology; 2016, 76
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of initial light intensity and deer browsing on Taxus baccata saplings: a six years field study
    Autorzy:
    Iszkulo, G.
    Nowak-Dyjeta, K.
    Sekiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/957073.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    light intensity
    deer
    browsing
    Taxus baccata
    sapling
    yew
    European yew
    rare species
    endangered plant
    Opis:
    European yew (Taxus baccata L.) is a rare species, but is the focus of great interest because of the species recovery attempts and its use in medicine. The aim of this study was to determine the optimum conditions for the development of the young generation of this species. Four-year old yew seedlings were grown under artificial light reduction: 2, 8, and 30%, as well as in full light. The seedlings were then planted in natural conditions in fenced and unfenced areas. The results of six years field studies indicated that the greatest impact on survival was shown by the light conditions from the period before planting under the canopy of trees. Seedlings from the 2 and 8% of light showed the greatest mortality. The reason was the sudden change in light conditions, because at the time of planting (early spring), there was no reduction of light under deciduous trees. Almost all of the unfenced yew seedlings were grazed by deer, but yew survival in the unfenced group was surprisingly high despite the permanent grazing. This was explained by the high resistance of yew to cutting and the protection of seedlings by a dense layer of Rubus. The results indicated that yew trees require protection against animals for normal development, even if animals have not previously had contact with Taxus and that yew seedlings are very sensitive to sudden changes in light. Both conclusions can be applied in the development of natural and artificial regeneration of European yew and other endangered plants.
    Źródło:
    Dendrobiology; 2014, 71; 93-99
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Factors determining natural regeneration of yew (Taxus baccata L.) in the Kórnik Arboretum
    Autorzy:
    Giertych, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/41677.pdf
    Data publikacji:
    2000
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    seed dispersal
    Turdidae
    environmental factor
    natural regeneration
    yew
    Taxus baccata
    Sitta europea
    regeneration
    Kornik Arboretum
    Opis:
    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” (0.2%), most of it 82.5% is “under canopy” and only 17.3% “near the trunk”. It is assumed that thrushes (Turdidae) are primarily responsible for regeneration in the under canopy category (endozoochoria) and nuthatches (Sitta europea L.) in the near trunk category (synzoochoria). Under canopy regeneration exists in all size classes while near the trunk there is a distinct decline in the number of yew plants with increase in size (age) suggesting that conditions for further development there are less favourable. Nutchatches disperse yew seeds in the vicinity of mother plants, for cleaning them preferring trees to shrubs and particularly trees with smooth bark trunks (Fagus, Carpinus), however yew survival near the trunk is better under conifers. Thrushes disperse yew seed over wider areas. Survival of yews is best under loose canopies, in moderate shade, on drier well draining, low pH, soils.
    Na planach sekcji Arboretum Kórnickiego zaznaczono wszystkie cisy, wyróżniając kategorię lokalizacji („przy pniu”, „pod koroną”, „naotwa rtej przestrzeni”), rozmiar cisa (związany z wiekiem), rodzaj drzewa dlaka tegorii „przy pniu” i czynniki środowiskowe różnicujące sekcje Arboretum. Praktycznie nie ma odnowienia„ naotwa rtej przestrzeni” (0,2%), większość cisów rośnie „pod koronami” (82,5%), a tylko 17,3% „przy pniu”. Zakłada się, że głównie drozdowate (Turdidae) są odpowiedzialne za odnowienie „pod koronami” (endozoochoria), a kowaliki (Sitta europea L.) „przy pniu” (synzoochoria). „Pod koronami” jest odnowienie we wszystkich klasach wielkości (wieku), a „przy pniu” obserwuje się wyraźny spadek liczebności wraz ze wzrostem siewek, co sugeruje, że warunki rozwoju są tam gorsze. Kowaliki roznoszą nasiona cisa w pobliżu drzew matecznych, ado ich czyszczeniapreferują pnie drzew bardziej niż krzewów i to drzew o gładkiej korze (Fagus, Carpinus), cisy natomiast przeżywają lepiej „przy pniu” drzew iglastych. Drozdowate rozprowadzają nasiona na większym obszarze. Utrzymanie się odnowieniajest najskuteczniejsze pod luźnym zadrzewieniem, w niewielkim ocienieniu, na suchszych, przepuszczalnych glebach, o niskim pH.
    Źródło:
    Dendrobiology; 2000, 45
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The yew (Taxus baccata L.) of the Cisowy Jar reserve near Olecko
    Autorzy:
    Iszkulo, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/41049.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    sex ratio
    shade
    yew
    Polska
    Taxus baccata
    Olecko
    Cisowy Jar Reserve
    growth
    nature reserve protection
    Opis:
    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 sunny positions. There is no continuity of population. No specimens in the height range between 51-100 cm were found. Sparse seedlings die in first years after appearing. Active human help is necessary to protect and to reconstruct the yew population in the reserve.
    Źródło:
    Dendrobiology; 2001, 46
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variation in sex expression in Polish and Ukrainian populations of Taxus baccata L.
    Autorzy:
    Iszkulo, G
    Jasinska, A.K.
    Powiązania:
    https://bibliotekanauki.pl/articles/41564.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    tree
    yew
    Taxus baccata
    Polish population
    Ukrainian population
    sex expression
    monoecious species
    dioecious species
    sex evolution
    gymnosperm
    Opis:
    The aim of the present study was to analyse the occurrence of monoecious individuals in selected populations of Taxus baccata in Poland and Ukraine. The investigation showed the monoecy in Taxus baccata to be extremely rare phenomenon. Only four cosexual individuals were found in three by seven populations examines and the frequency of monoecy was 0.13% on average among 2986 trees verified. Isolated seeds were found on individuals with large number of male flowers. Only one tree was found with numerous macro- and microstrobiles.
    Źródło:
    Dendrobiology; 2004, 52; 29-32
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The yew (Taxus baccata L.) population in Knyazhdvir Nature Reserve in the Carpathians (Ukraine)
    Autorzy:
    Boratynski, A.
    Didukh, Y.
    Lucak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/41551.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Ukraine
    occurrence condition
    Knyazhdvir Nature Reserve
    yew
    plant protection
    Carpathians Mountains
    Taxus baccata
    standing structure
    population
    Opis:
    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 of the population indicate that the population is in progress. The largest specimens in 1976 were of 12 m high and of 30 cm dbh. The natural regeneration is satisfactory. The increment of height of the yew was greater in the conditions of less density of the canopy of beech-fir stand under which the species grows.
    Źródło:
    Dendrobiology; 2001, 46
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ecology and conservation status of Taxus baccata population in NE Chalkidiki, northern Greece
    Autorzy:
    Katsavou, I.
    Ganatsas, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/41599.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    ecology
    conservation status
    Taxus baccata
    European yew
    plant population
    stand structure
    forest regeneration
    radial growth
    Chalkidiki Peninsula
    Greece
    Opis:
    Taxus baccata L. is a rare species threatenedwith extinction in Greece, as in other parts of Europe. This paper deals with the ecological status of the species in the area of NE Chalkidiki northern Greece, where the species appears in one of the greatest populations of the country. Site, standand yew population characteristics were studied in the area that species occupies. Eleven sample plots were marked, and on each plot, the height and diameter at breast height (DBH) were measured for all yew trees, as well as for all the individuals of the rest tree species, with diameter at breast height greater than 4 cm. Tree vitality of all trees was also estimated according to IUFRO classification. Yew radial growth was studied using tree-ring analysis. Tree natural regeneration was investigated within subplots of different dimensions and according to two height classes. Results showed that yew population occurs in stands dominated by beech, presenting a mean density of 301 trees per hectare, with a total population of 430 trees with DBH above 4 cm. It forms the secondary stand, and dominates in the stand understorey, accompanied with Fagus sylvatica and Ilex aquifolium, while it appears rarely in the overstorey. Yew tree vitality was foundto be quite high, and significantly higher than that of beech. Radial growth of the sampled trees follows a slow and constant annual increment gradually decreasing by tree age. Yew natural regeneration was foundto be relatively low, 1341.8 individuals (seedlings and saplings up to 1 m) per hectare. Management and in situ conservation of the species in the area should focus on species protection measures, andon specific silvicultural treatments for creating favourable conditions for species growth.
    Źródło:
    Dendrobiology; 2012, 68
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dendroecological differences between Taxus baccata males and females in comparison with monoecious Abies alba
    Autorzy:
    Iszkulo, G.
    Jasinska, A.K.
    Sobierajska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/41698.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    dendrology
    ecological differentiation
    Taxus baccata
    male
    female
    Abies alba
    reproductive effort
    dendrochronology
    European yew
    yew
    silver fir
    fir
    Opis:
    Taxus baccata L. is a rare and endangered dioecious species in Europe. Species of this mating system are considered to be the most vulnerable to extinction. It is believed that one reason for this state may be the uneven reproductive effort and different habitat requirements of the two sexes. Silver fir and European yew have very similar ecological requirements, but fir is a monoecious species. The aim of this study was to compare the growth rate andthe effect of precipitation andtemperature on the annual tree-ring width of silver fir and both sexes of European yew. The study site was the Knyazhdvir reserve in western Ukraine, located near the limit of the geographical range of both species. Knyazhdvir reserve is the site of one of the last yew populations in Europe with a large number of individuals (about 15,000 individuals above 1.3 m height) growing alongside fir.Woodsamples were taken from 15 male and15 female specimens of T. baccata andfrom 15 specimens of A. alba and were subjected to a standard dendrochronological procedure. The results showed high positive correlation between the temperatures in February andMarch andthe tree-ring width in the studied species and genders. The response of annual tree-ring width to the examined climatic factors was relatively similar in yew andfir. However slight differences were foundbetween males andfemales of T. baccata. The growth rate decreased more rapidly in females compared to males, probably following sexual maturation. Precipitation in April hada positive effect on firs andfemale yews, but not on male yews. This confirms earlier reports of the requirement of female specimens of dioecious species for a higher humidity than male individuals.
    Źródło:
    Dendrobiology; 2011, 65
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Natural regeneration and gender-specific spatial pattern of Taxus baccata in an old-growth population in Foresta Umbra (Italy)
    Autorzy:
    Vessella, F.
    Salis, A.
    Scire, M.
    Piovesan, G.
    Schirone, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/41142.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Mediterranean environment
    natural regeneration
    regeneration dynamics
    Taxus baccata
    English yew
    rare species
    dioecious species
    endangered species
    Italy
    Opis:
    English yew is rare and endangered dioecious species. Research on regeneration processes of endangered taxa is important to understand the mechanisms allowing a species to survive under several ecological scenarios, to predict future distribution shifts, to achieve best management practices and conservation policies. Our investigation was focusing on one of the oldest yew population in Europe, in Foresta Umbra in Italy. The main aim of this study was to understand spatial regeneration processes and dynamics related with parent trees’ sex distribution. Geostatistical analysis showed that seedlings occur in patches avoiding direct competition with adult yews. Negative relationship between regeneration and yew density and basal area was found. A general model for the reproductive ecology is proposed: females are less competitive and more environmentally demanding than males, because of their reproductive effort. Indeed, male and female fitness responds differently across environmental gradients, thus favouring spatial segregation of seedlings. Understanding the yew’s adaptive effectiveness is essential to ensure the conservation of existing populations, and encourage the species’ resilience into areas where yew is endangered.
    Źródło:
    Dendrobiology; 2015, 73
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stand structure and natural regeneration of Taxus baccata at "Stiwollgraben" in Austria
    Autorzy:
    Dhar, A
    Ruprecht, H.
    Klumpp, R.
    Vacik, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/41025.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    English yew
    Taxus baccata
    yew
    tree species
    Austria
    gene conservation
    natural regeneration forest
    stand structure
    population structure
    vitality
    yew decline
    Opis:
    English yew (Taxus baccata L.) is a rare tree species in Austria and gene conservation forests reserves are used to maintain English yew populations by silvicultural treatments. This paper describes the current situation of an English yew population at “Stiwollgraben”in Austria with regard to stand structure, vitality and natural regeneration. The area is one of the most important sites in Austria as it consists of 2236 yews.The vitality condition of the yew is very good, and more than 79% of the yews have been assessed as very vital to vital. The potentiality for natural regeneration (13019 one-year seedlings ha–1) is very high, but not all height classes are represented. This indicates a high survival ability of English yew at this site. Three different treatment strategies are described to maintain the yew population. The future effects of these treatments are discussed in the light of the environmental requirements of English yew.
    Źródło:
    Dendrobiology; 2006, 56; 19-26
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Oxidative stress generation in Taxus baccata leaves affected by Pestalotiopsis funerea under sunny and shaded conditions
    Autorzy:
    Rybus-Zajac, M
    Powiązania:
    https://bibliotekanauki.pl/articles/41011.pdf
    Data publikacji:
    2005
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    oxidative stress
    Taxus baccata
    leaf
    superoxide anion
    hydrogen peroxide
    superoxide dismutase
    yew tree
    park
    disease symptom
    fungal pathogen
    Pestalotiopsis funerea
    plant defense mechanism
    Opis:
    In the last few years on old yew trees growing in the parks and gardens extensive disease symptoms were observed on leaves, indicating affection with pathogenic microorganisms. The causal factor was the presence of a fungal pathogen, Pestalotiopsis funerea. Physiological responses involving the oxidative stress, i. e. superoxide anion and hydrogen peroxide levels, and the superoxide dismutase were analyzed as an element of a plant defense mechanism. Diseased leaves from plants growing under sunny and shaded conditions, from May to July, were investigated. The increased generation of superoxide anion-radicals and hydrogen peroxide were observed in the leaves with disease symptoms simultaneously with the activation of superoxide dismutase, which may indicate the induction of host defense response to the P. funerea.
    Źródło:
    Dendrobiology; 2005, 54; 51-56
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of sunlight on phenolic compounds accumulation in coniferous plants
    Autorzy:
    Brzezinska, E
    Kozlowska, M
    Powiązania:
    https://bibliotekanauki.pl/articles/41493.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    light condition
    one-year-old shoot
    two-year-old shoot
    needle
    common yew
    Taxus baccata
    American arborvitae
    Thuja occidentalis
    common juniper zob.juniper
    juniper
    Juniperus communis
    urban garden
    phenol
    total phenol content
    accumulation
    coniferous plant
    sunlight
    flavone
    Opis:
    The effect of light conditions on the accumulation of phenolic compounds was investigated in the needles of one-year and two-year old shoots, collected from perennial specimens of common yew (Taxus baccata L.), American arborvitae (Thuja occidentalis L.) and common juniper (Juniperus communis L.), growing in an urban garden. The content of total phenols and flavones was partially related to the light requirement or light tolerance of conifer tree. In Taxus needles, a shade-loving species, higher accumulation of phenolic metabolites was observed under shaded condition (in two-year old shoots) and was linked with the growth intensity in spring. In Thuja and particularly in Juniperus, the level of phenolics was related to the insolation intensity, probably so as a part of the adaptation mechanism.
    Źródło:
    Dendrobiology; 2008, 59; 3-7
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-14 z 14

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies