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Tytuł:
Zn-induced ROS and RNS metabolism alterations in plants with modulated senescence via cytokinin level
Autorzy:
Prochazkova, D.
Haisel, D.
Pavlikova, D.
Schnablova, R.
Szakova, J.
Vytasek, R.
Wilhelmova, N.
Powiązania:
https://bibliotekanauki.pl/articles/81119.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
premature senescence
plant life
abiotic stress
reactive oxygen species
senescence
cytokinin
transgenic plant
transgenic tobacco
Nicotiana tabacum
chlorophyll content
nitrotyrosine
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Próba oceny wpływu szerokości szlaków turystycznych na otaczające je środowisko lasu
An attempt to assess the effect of tourist trail width on adjacent forest environment
Autorzy:
Skłodowski, J.
Bartosz, S.
Dul, L.
Grzybek, D.
Jankowski, S.
Kajetanem, M.
Kalisz, P.
Korenkiewicz, U.
Mazur, G.
Myszek, J.
Ostasiewicz, M.
Primka, B.
Puczyłowska, I.
Radzikowski, M.
Roeding, P.
Serek, B.
Powiązania:
https://bibliotekanauki.pl/articles/1009663.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
turystyka
zwiezlosc gleb
wskazniki ekologiczne
oddzialywanie na srodowisko
wysokosc
runo lesne
lasy
erozja gleb
lesnictwo
szlaki turystyczne
tourist trails
environmental changes
soil compaction
erosion
height of herbaceous vegetation
plant life forms
indicator figures
Opis:
The impact of narrow (up to 2 m), medium (up to 3.5 m) and wide (>3.5 m) tourist trails on the surrounding environment was investigated. On wide trails, the value of soil erosion and compaction indices was found to be the highest, while the herb height index was the lowest indicating the greatest impact of wide trails on the environment. The phytosociological relevés were used to determine ecological indicator figures. Wide trails were characterized by higher thermal and continentalism indices and lower pH and trophic indices. The proportion of therophytes and geophytes was higher, while of hemicryptophytes, phanerophytes and chamaephytes on wide trails were lower than on medium and narrow trails. All the analysed indices pointed to a stronger impact of wide trails on the environment in comparison with medium and narrow trails.
Źródło:
Sylwan; 2009, 153, 10; 699-709
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological Significance of Life Forms of Plant Species of Floristic Complexes of the Ketpen Range
Autorzy:
Sadyrova, Gulbanu
Sadyrov, Gani
Bazarbaeva, Tursunkul
Tanybaeva, Ainur
Mukanova, Gulzhanat
Jamilova, Saule
Powiązania:
https://bibliotekanauki.pl/articles/27323826.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
plant
life forms
floristic complex
Opis:
The article provides an analysis of life forms of 9 floristic complexes of the Ketpen ridge on the basis of many years of research materials, where life forms were studied in each floristic complex according to the systems of K. Raunkiaer and I.G. Serebryakov. An analysis of life forms according to the system of K. Raunkiaer established the dominance of hemicryptophytes in cryophilic-meadow (74.8%), petrophilic (72.5%) and deciduous-forest (80.3%) floristic complexes of the Ketpen ridge, which accounted for the total number of species of complexes. The second large group in terms of the number of species corresponded to cryptophytes, which predominate in the cryophilic-meadow (65.3%) and psammophilic (45.9%) floristic complexes. Distribution of species according to life forms according to I.G. Serebryakov demonstrated a clear predominance of polycarpic in the meadow complex amounting to 82.5%, deciduous-forest – 81.7%, psammophilous – 75.9% and steppe – 79.4% floristic complexes of the total number of species of complexes. An analysis of the meadow floristic complex of the Ketpen ridge according to Serebryakov showed that taproot plants account for 128 species or 20.5%, short-rhizome – 18.4%, long-rhizome – 11.3%, turf-rhizomatous – 4.8%. An analysis of the life forms of the psammophilic floristic complex revealed the prevalence of therophytes (40.7%). It was found that the spectrum of life forms according to Raunkiaer and Serebryakov emphasizes the peculiarities of the floristic complexes of the Ketpen ridge.
Źródło:
Journal of Ecological Engineering; 2023, 24, 7; 263--273
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plant–insect interactions: the role of ecological stoichiometry
Interakcje roślin z owadami mogą być kształtowane przez stechiometrię ekologiczną
Autorzy:
Filipiak, Michał
Weiner, January
Powiązania:
https://bibliotekanauki.pl/articles/1631061.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
ecological stoichiometry
plant
insect
plant–herbivore
fitness
life history
bee
pollen
Opis:
The energy budget of organisms is a primary factor used to generate hypotheses in ecosystem ecology and evolutionary theory. Therefore, previous studies have focused on the energy costs and benefits of adaptations, the efficiency of energy acquisition and investment, and energy budget limitations. The maintenance of stoichiometric balance is equally important because inconsistency between the chemical composition of the consumer’s tissues and that of its food sources strongly affects the major life-history traits of the consumer and may influence the consumer’s fitness and shape plant–herbivore interactions. In this short review, the framework of ecological stoichiometry is introduced, focusing on plant–insect interactions in terrestrial ecosystems. The use of the trophic stoichiometric ratio (TSR) index is presented as a useful tool for indicating the chemical elements that are scarce in food and have the potential to limit the growth and development of herbivores, thereby influencing plan – herbivorous insect interactions. As an example, the elemental composition and stoichiometry of a pollen consumer (mason bee Osmia bicornis) and its preferred pollen are compared. The growth and development of O. bicornis may be colimited by the scarcity of K, Na, and N in pollen, whereas the development of the cocoon might be colimited by the scarcity of P, Mg, K, Na, Zn, Ca, and N. A literature review of the elemental composition of pollen shows high taxonomical variability in the concentrations of bee-limiting elements. The optimized collection of pollen species based on the elemental composition may represent a strategy used by bees to overcome stoichiometric mismatches, influencing their interactions with plants. It is concluded that the dependence of life-history traits on food stoichiometry should be considered when discussing life history evolution and plant–herbivore interactions. The TSR index may serve as a convenient and powerful tool in studies investigating plant-insect interactions.
Głównym czynnikiem, którego wpływ na organizmy uwzględnia się w ekologii ekosystemów i ekologii ewolucyjnej jest bilans energetyczny. Wskutek tego badacze skupiają się na energetycznych korzyściach i kosztach adaptacji, wydajności przyswajania i inwestycji energii oraz ograniczeniach budżetu energetycznego. Jednak równie ważny jest problem bilansu stechiometrycznego i rozbieżności pomiędzy składem budulca tworzącego tkanki konsumenta oraz jego pokarmu. Ta rozbieżność kształtuje cechy historii życiowych organizmów (np. tempo wzrostu, wielkość ciała czy strategię reprodukcji) oraz wpływa na interakcje roślin z roślinożercami. W związku z tym stechiometria (proporcje pierwiastków) tkanek konsumenta i jego pokarmu może służyć jako narzędzie badawcze podczas studiowania mechanizmów kształtujących interakcje roślin z owadami roślinożernymi. W części przeglądowej niniejszej pracy przedstawione są ramy programu badawczego stechiometrii ekologicznej, w kontekście oddziaływań roślina–owad w ekosystemach lądowych. Zaproponowany jest wskaźnik trophic stoichiometric ratio (TSR) – narzędzie użyteczne do wykrywania pierwiastków stężonych w pożywieniu w zbyt małych ilościach względem potrzeb konsumenta, potencjalnie limitujących wzrost i rozwój roślinożercy, tym samym kształtując zależności między roślinami, a roślinożercami. Rozwijając idee przedstawione w części przeglądowej, zaprezentowano, na przykładzie murarki ogrodowej (Osmia bicornis – pszczoła samotna, pyłkożerca), jak zastosowanie programu stechiometrii ekologicznej do badania interakcji roślina–owad, może owocować interesującymi hipotezami i ważkimi wyjaśnieniami. Wzrost i rozwój murarki może być kolimitowany przez niedobór K, Na oraz N w pożywieniu (pyłku roślinnym), natomiast produkcja kokonu może być kolimitowana przez niedobór P, Mg, K, Na, Zn, Ca oraz N. Skład pierwiastkowy pyłku odznacza się wysoką zmiennością taksonomiczną. Konieczność stechiometrycznego zbilansowania diety może kształtować strategie zdobywania pokarmu i reprodukcji oraz wpływać na śmiertelność i dostosowanie pyłkożercy, kształtując interakcje owada z roślinami. Zależność cech historii życiowych od stechiometrii pożywienia powinna być brana pod uwagę podczas badania ewolucji historii życiowych oraz interakcji roślin z owadami. Wskaźnik TSR może służyć jako poręczne, a zarazem skuteczne narzędzie podczas takich badań.
Źródło:
Acta Agrobotanica; 2017, 70, 1
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Periods of occurrence and fecundity of Arion lusitanicus Mab. [Gastropoda: Pulmonata] in crop plant habitats in Poland
Autorzy:
Kozlowski, J
Kozlowski, R.J.
Powiązania:
https://bibliotekanauki.pl/articles/65635.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
crop plant habitat
Gastropoda
Polska
Arion lusitanicus
occurrence period
plant protection
fecundity
life cycle
slug
Pulmonata
Opis:
In the years 1997-1999, studies on the periods of A. lusitanicus development and on the occurrence of its developmental stages were carried out. Dates of overwintering, mating, egg-laying, hatching and population peaks of the slug were observed on six sites located in horticultural habitats, as well as in the isolation cage, where slugs were reared. It was ascertained that A. lusitanicus has a year-long life cycle. The slug overwinters in the form of eggs or juvenile stages and rarely as adult individuals. Young slugs leave their winter shelters by the end of February. The mating period starts in the second half of July and lasts from 6 to 10 weeks. Eggs are laid from mid-August till late autumn. Slug hatching occurs in spring and autumn at the time of plant sprouting.
W latach 1997-1999 w rejonie Łańcuta prowadzono badania nad cyklem życiowym ślinika luzytańskiego - Arion lusitanicus Mah. W siedliskach upraw ogrodniczych oraz w izolatorze z hodowlą ślimaka obserwowano terminy: zimowania, kopulacji, składania jaj, wylęgania ślimaków i szczytów liczebności. Ustalono, że A. lusitanicus ma roczny cykl życiowy, ale w populacji ślimaka mogą także występować pojedyncze osobniki o dwuletnim cyklu życiowym. Zimują jaja lub stadia młodociane, rzadziej osobniki dorosłe. Młode ślimaki opuszczają kryjówki zimowe pod koniec lutego. Wyląg ślimaków z jaj zimujących trwa od połowy marca do końca kwietnia. W połowie maja stadia młodociane osiągają szczyt liczebności. Okres kopulacji rozpoczyna się w drugiej połowie lipca i trwa od 1,5 do 2,5 miesiąca. Jaja składane są od połowy sierpnia do późnej jesieni. Ze złożonych jaj wyląg ślimaków rozpoczyna na początku drugiej dekady września i trwa od 50 do 80 dni. Przed zimą wylęga się do 30% jaj. Reszta jaj zimuje i wylęga się wiosną następnego roku. Liczne pojawy A. lusitanicus przypadają wiosną i wczesną jesienią, w okresach wzrostu i wschodów roślin uprawnych najbardziej wrażliwych na żerowanie ślimaka.
Źródło:
Journal of Plant Protection Research; 2000, 40, 3-4
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of postharvest quality of chrysanthemum cut flowers under pretreatment with nitrogenous compounds
Autorzy:
Souri, M.K.
Goodarzizadeh, S.
Ahmadi, M.
Hatamian, M.
Powiązania:
https://bibliotekanauki.pl/articles/11865013.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
chrysanthemum
ornamental plant
flowering plant
cut flower
shelf life
postharvest quality
pretreatment
nitrogenous nutrient
ammonium
carotenoid
Opis:
This study was done using three nitrogenous compounds to evaluate their effects on postharvest characteristics of chrysanthemum (Chrysanthemum indicum) cut flowers. The study consisted of three separate and parallel experiments, in which ammonium sulfate, calcium nitrate and potassium nitrate were used in different concentrations of zero, 50, 100, 200 and 500 mg dm ‒3 N for pretreatment of stems for 6 hour before transferring to holding d-water solution. The results showed that petal ion leakage and leaf SPAD values were increased by increasing ammonium sulfate, but not calcium or potassium nitrate. Petal carotenoids were increased by pretreatment of ammonium sulfate and potassium nitrate. There was constant increase in water uptake by increasing the levels of calcium nitrate and potassium nitrate, while ammonium sulfate at high concentrations (200 and 500 mg dm ‒3 N) resulted in significant less water uptake compared to control. Ammonium sulfate in 50 and 100 mg dm ‒3 increased shelf life of pretreated stems, but higher concentrations significantly reduced cut flowers shelf life. Increasing concentrations of calcium nitrate and particularly potassium nitrate have led to prolongation of flower shelf life to 12 days compared to 6 days of control. The results indicate that pretreatment of chrysanthemum cut flowers with ammonium sulfate in rather low concentrations or with moderate to high concentrations of calcium nitrate or potassium nitrate can significantly improve shelf life and postharvest flower qualities.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 3; 83-90
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Postharvest quality of cut aspidistra leaves as affected by colloidal silver
Autorzy:
Byczyńska, Andżelika
Powiązania:
https://bibliotekanauki.pl/articles/1182729.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Aspidistra elatior
SPAD
cast-iron-plant
ornamental foliage
vase life
Opis:
The aim of the study was to evaluate the effect of colloidal silver on postharvest longevity and quality of Aspidistra elatior leaves. Colloidal silver was applied at three concentrations: 0.01%, 0.02% and 0.04%. Control leaves were placed in water. Treating aspidistra leaves with colloidal silver solutions increased greenness index of the laminas, thereby improving their aesthetic value. Aspidistra leaves exposed to colloidal silver at 0.01% and 0.02% increased their fresh weight.
Źródło:
World Scientific News; 2017, 69; 244-247
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The dynamics of the population of a steppe perennial Senecio macrophyllus M.BIEB. during xerothermic grassland overgrowing
Autorzy:
Czarnecka, B
Powiązania:
https://bibliotekanauki.pl/articles/56894.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
population dynamics
steppe plant
Senecio macrophyllus
xerothermic grassland
life-stage structure
Opis:
The study aimed to determine the long-term changes of the Senecio macrophyllus M.BIEB. population traits: the abundance, reproduction mode, individual fecundity, seed rain and recruitment of new genets in the course of xerothermic grassland overgrowing. The study had also the applied goal: to estimate the chances of "special care" species to survive in the changing environment without management regime for the maintenance of grassland. The model object was the island population of large-leaved ragwort on Biała Góra (the White Mountain) near Tomaszów Lubelski, South-East Poland. To achieve these aims I used the following sets of data: phytosociological relev,s made in plant communities in an interval of 16-18 years; repeated elaboration of the numbers and life-stage structure of the population, both by non-surface and surface method; observation of plants, life cycle in 50 labelled genets; population reproduction and seed rain amounts. The area of an open xerothermic grassland decreased due to the process of overgrowing by bushes which was accompanied by the increasing coverage of forest and meadow herbs as well as monocotyledons, mainly Brachypodium pinnatum and Calamagrostis epigejos. The abundance of the S. macrophyllus population noticable diminished. The flowering mode has been changing during years from an oscillation to a chaotic type which caused the significant decreasing of the individual fecundity, population reproduction and seed rain. In last years it was reflected in the interruption of juveniles’ recruitment.
Źródło:
Acta Societatis Botanicorum Poloniae; 2009, 78, 3; 247-256
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Life cycle assessment of fertilizers: a review
Autorzy:
Skowronska, M.
Filipek, T.
Powiązania:
https://bibliotekanauki.pl/articles/24121.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
life cycle
assessment
fertilizer
environment
plant material
raw material
agricultural production
Opis:
Life cycle assessment has become an increasingly common approach for identifying, quantifying, and evaluating the total potential environmental impact of production processes or products, from the procurement of raw materials (the ‘cradle’), to production and utilization (the ‘gates’) and their final storage (the ‘grave’), as well as for determining ways to repair damage to the environment. The paper describes life cycle assessment of mineral fertilizers. On the basis of results provided by life cycle assessment, it can be concluded that an effective strategy for protecting the environment against the harmful effects of fertilizers is to attempt to ‘seal’ the nutrient cycle on a global, regional, and local scale. Pro-environ- mental measures aim on the one hand to reduce resource utilization, and on the other hand to limit losses of nutrients, during both production and use of fertilizers. An undoubted challenge for life cycle assessment when used in agricultural production is the need for relevance at each scale.
Źródło:
International Agrophysics; 2014, 28, 1
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of temperature on the development of Thrips nigropilosus Uzel (Thysanoptera: Thripidae) on Mentha x piperita L. and the impact of pest on the host plant
Autorzy:
Kucharczyk, H.
Kucharczyk, M.
Winiarczyk, K.
Lubiarz, M.
Tchórzewska, D.
Powiązania:
https://bibliotekanauki.pl/articles/12682489.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
greenhouse cultivation
mint
Mentha piperita
herbal plant
host plant
plant morphology
plant anatomy
morphological change
anatomical change
pest
plant pest
Thysanoptera
Thripidae
Thrips nigropilosus
foraging
life cycle
temperature effect
Opis:
Thrips nigropilosus Uzel is a polyphagous species occurring mainly in temperate climates. Its life cycle depends on photoperiodic and temperature conditions. T. nigropilosus feeds on different plant species, but it is considered one of the most serious pests of pyrethrum plants causing serious economic problems. However, several additional agricultural host plants have been affected by T. nigropilosus, including spearmint, cucumber, and lettuce, indicating that this insect can significantly widen its habitats and occurs especially frequently in greenhouses. We report that T. nigropilosus massively attacked Mentha × piperita L. cultivated in greenhouses in central Poland and destroyed the entire mint crops within a short time. The study provided insight into the harmful effect of the thrips and showed that the length of the thrips developmental cycle was reduced with temperature increases from 18 to 26.6°C. The lower threshold temperatures were 13.7, 10.2, 5.0, and 10.1 for eggs, larvae, pupae, and total development, respectively, and the thermal constant for the same developmental stages was 65.9, 90, 132.5, and 284.9-degree days. Both parameters were estimated by linear regression analysis. During our experiment, T. nigropilosus developed by thelytokous parthenogenesis. The morphological and anatomical changes in damaged plants were associated with the fact that the insect began feeding on the lower lamina surface close to the leaf midribs, but no damage to vascular bundles and glandular cells was observed.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 3; 219-233
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphological description of plant root status in the different-structured soils
Autorzy:
Slowinska-Jurkiewicz, A.
Domzal, H.
Pranagal, J.
Powiązania:
https://bibliotekanauki.pl/articles/25972.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
biopore
soil structure
soil compaction
morphological analysis
life condition
root
plant
Źródło:
International Agrophysics; 1998, 12, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphology and symbolism of trees. General habit
Autorzy:
Galera, Halina
Powiązania:
https://bibliotekanauki.pl/articles/703226.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
plant structure
world record holders among plants
symbolic plant motifs
arbor mundi
axis mundi
the Tree of Life
Opis:
Morphology is the study of the form, shape and structure of an organism. The connection between the morphology and symbolism of trees is associated with the spirituals bonds existing between humans and trees. The common terms, such as „tree”, „trunk”, „branch”, „root”, „fruit”, „flower”, „leaf” have a specific meaning in botany. In addition these terms carry various symbolic meanings. This article attempts to analyse symbolic plant motifs which were based on the morphological structure of trees. The symbolic significance of trees is associated with their specific structure: the crown represents the mystical heaven, the trunk symbolizes the earthly world, the roots extend deep into the underworld. Possibly the best known cosmic tree (arbor mundi) is the Scandinavian Ash or Yggdrasil. It also represents the axis mundi – the centre of the world. Tree-like diagrams which graphically illustrate genealogies refer to the structure of trees as well (e.g. the tree of Jesse). Trees are the largest and longest living organisms on our planet. Among the tallest trees in the world are: Sequoia sempervirens „Hyperion” from California (measuring 115,5 m), and Eucalyptus regnans „Icarus Dream” from Tasmania (97 m high). The largest tree in terms of total volume is Sequoiadendron giganteum „General Sherman” in California (1500 cubic meters). The myth of the Ultimate Lotus Tree Sidrat al-Muntaha – that marks the end of the seventh heaven is a reference to a very large tree (probably Zizyphus lotus, however its specimen are not so large). The oldest known living specimen is the „Methuselah”, a bristle cone pine Pinus longaeva in California, which is estimated to be about 5000 years old. Taxus baccata from Henryków Lubański is the oldest tree (1250 years-old) on record in Poland. Due to their long life span, trees can be seen as “monuments”, which remind the world of important events in history, eg. the sycamore tree destroyed during the terrorist attack on the World Trade Centre on September 11, 2001, whose roots were used in preparation for the sculpture honoring St. Paul’s Church. Tree symbolism also relates to changes in the appearance of trees that result from their life cycle and phenology. Trees, which lose their leaves in winter and produce new ones in spring, symbolize rebirth after death. Therefore, the cosmic tree is also called the Tree of Life. In Japanese culture the seasonal changes in the appearance of trees indicated the passage of time. In many cultures around the world trees were held sacred because they were believed to be the homes of certain gods (e.g. Ficus sycomorus in ancient Egipt, oak trees in Slavic and German legends). It should be noted, however, that the trees themselves were not the objects of worship but the gods who were thought to dwell in these trees. Nowadays the respect people have for trees stems from other reasons.
Źródło:
Nauka; 2007, 2
1231-8515
Pojawia się w:
Nauka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of silicon on morphological traits and mechanical properties of Polygonatum multiflorum (L.) All. ‘Variegatum’ cut shoots
Autorzy:
Pogroszewska, E.
Szot, P.
Rubinowska, K.
Konopińska-Memej, A.
Świstowska, A.
Zdybel, A.
Parzymies, M.
Durlak, W.
Powiązania:
https://bibliotekanauki.pl/articles/11859059.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
ornamental plant
perennial plant
Polygonatum multiflorum
Variegatum cultivar
plant cultivar
morphological trait
mechanical property
post-harvest longevity
vase life
stem strength
silicon
Actisil Hydro Plus preparation
plant research
Opis:
Garden perennials are a source of floristry material produced in field or under covers. A perennial producing long, leafy shoots, which in flower arrangements might successfully substitute fern or palm leaves, is Polygonatum multiflorum. The variety characterizing with decorative white margined leaves is ‘Variegatum’. To improve their quality, the growth stimulator Actisil Hydro Plus, which contains 0.6% of active silicon in a form of orthosilicic acid was applied. The aim of the conducted experiment was to estimate the influence of silicon and a place of cultivation (tunnel and open field) on post-harvest quality determined with morphological features, vase life longevity and mechanical properties of Polygonatum multiflorum (L.) All. ‘Variegatum’ stems. The plants were sprayed with water solutions of Actisil in concentrations: 0.2%, 0.3%, and 0.4%, six times during the growing season in weekly intervals, starting from the first decade of May, always in the morning. It was stated that cultivation of Polygonatum in the unheated foil tunnel increases quality of shoots for cut greenery, determined with morphological features and post-harvest longevity. Cultivation of Polygonatum in a foil tunnel and spraying plants with Actisil in concentrations of 0.3 or 0.4% is advantageous due to possibility to increase a number of shoots from 20% to over 31%, their length from 9% to 11% and fresh weight from 52% to 71%, in comparison to control plants. It is advised to treat plants cultivated in a tunnel, with Actisil in concentration of 0.4% as it improved shoots quality evaluated with their diameter and lower leaves blade area. Spraying plants with Actisil in concentrations of 0.2–0.4% in the tunnel and 0.2% in field prolongs post-harvest shoots longevity by 3–4 days. Plants cultivated in the tunnel characterize with higher strength of shoots determined with higher maximum force causing permanent damage and lower stem deflection than plants cultivated in field. Plants grown in a tunnel and sprayed with Actisil in concentrations of 0.4% characterized with the strongest shoots after 14 days of storage, however a similar effect was observed with the concentration of 0.3% and in case of plants cultivated in field and sprayed with 0.4% of Actisil.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 4; 157-166
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of pre-harvest treatment with gamma-aminobutyric acid (GABA) and salicylic acid on vase life and post-harvest traits of tuberose cut flowers
Autorzy:
Babarabie, M.
Zarei, H.
Eskandari, A.
Powiązania:
https://bibliotekanauki.pl/articles/12679490.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
tuberose
Polianthes tuberosa
ornamental plant
bulbous plant
flowering plant
cut flower
preharvest treatment
postharvest trait
gamma-aminobutyric acid
salicylic acid
enzymatic activity
vase life
Opis:
Tuberose (Polianthes tuberosa L.) is an ornamental bulbous plant and a famous cut flower in tropical and subtropical regions. Post-harvest senescence of the cut flowers is the main factor limiting the marketability of most of these species including tuberose. From the perspective of metabolic changes, senescence happens as the result of oxidative processes induced by active oxygen species production. Gamma-aminobutyric acid (GABA) and salicylic acid (SA) are compounds with some functions in the post-harvest physiology of some plants. The present study focused on the effect of GABA and SA on vase life and some post-harvest traits of cut tuberose flowers. The plants were sprayed with GABA (5, 10, or 15 mg L–1) and SA (50, 100, or 150 mg L–1) at three stages during growth and before harvest in a greenhouse (30, 45, and 60 days after the planting of the bulbs) and were observed after harvest until senescence. Results showed that GABA and SA positively affected the vase life, water uptake, fresh weight, ion leakage, total dissolved solids, chlorophyll, protein, and catalase, peroxidase, and ascorbate peroxidase enzymatic activity. They postponed senescence. The highest and lowest vase lives were observed in plants treated with 10 mg L–1 GABA (11 days) and control (distilled water) (7 days), respectively. It was found that the treatment of tuberose with GABA and SA during growth can improve its post-harvest quality. However, it is recommended to conduct further studies on them.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 4; 83-92
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applying the life cycle assessment method to an analysis of the environmental impact of heat generation
Autorzy:
Dzikuć, M.
Powiązania:
https://bibliotekanauki.pl/articles/955269.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
energia
ekologia
ciepło
elektrownia
life cycle assessment (LCA)
energy
ecology
heat
power plant
Opis:
The paper presents a method of Life Cycle Assessment (LCA) to determine the impact of the heat produced on the environment. In addition, the usefulness of this method to assess the energy sector has been shown. This paper presents the impact of heat generation on the environment in coal power plants. A detailed analysis by the method of LCA is made to compare the environmental impact of heat generation in the Legnica Power Plant and Polkowice Power Plant. It is pointed to the difference in the results obtained. Moreover, the causes of the reported environmental impacts are discussed. Measures are identified which will help to reduce in the future the impact of the electricity produced on the environment during the production of heat.
Źródło:
International Journal of Applied Mechanics and Engineering; 2013, 18, 4; 1275-1281
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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