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Wyszukujesz frazę "vitality" wg kryterium: Temat


Tytuł:
“Dieser Zwang, vom Alter zu sprechen.” zu biologischen, psychologischen und sozialen Aspekten des männlichen Alters in Martin Walsers Werken aus dem XX. Jahrhundert
Autorzy:
Jurzysta, Aneta
Powiązania:
https://bibliotekanauki.pl/articles/1826609.pdf
Data publikacji:
2020-02-06
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
aging
loneliness
vitality
literature
Martin Walser
Opis:
Old age, an inevitable outcome of the process of aging, in which biological, mental and social changes lead to biological and mental imbalance, has been present as a subject in literature since the very beginning, and we can find both male and female elderly protagonists, with the changes observable in their final stages of lives. The article analyses selected protagonists of literary works of Martin Walser created in the 20th century, their spiritual, emotional and physical aging, problems of sexual nature, the deepening gap between elderly women or man and the young generation, or loneliness and lack of understanding connected with aging. The subject of transience, aging, declining vital force, existential dilemmas which accompany the last years of life, has been present in Walser’s works for decades, not only in those created recently the motif of the fear of life, the truth, ageing, loss and inevitable death, determining the attitudes and actions of the protagonists has been particularly foregrounded. The early works “A Runaway Horse” and “Breakers” provide material for analysis herein.
Źródło:
Conversatoria Litteraria; 2017, 11; 433-454
1897-1423
Pojawia się w:
Conversatoria Litteraria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accelerated and natural ageing processes change the properties of plasma membrane in Norway spruce (Picea abies (L.) Karst.) seeds during storage
Autorzy:
Nowakowska, J
Rakowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/41613.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
plasma membrane
Norway spruce
natural aging process
Picea abies
vitality
vigor
storage
seed
Opis:
The present study examines the mechanism of natural and accelerated ageing processes in Norway spruce (Picea abies [L.] Karst.) seeds stored at low temperature for one (control) and eight years. The analyses of vitality, electrolyte leakage, protein composition and activity of the proton-pump ATPase (P-ATPase, EC.3.6.1.35) in plasma membrane of Norway spruce seeds have been investigated. Seeds collected in 1999 from northeastern Poland have been treated with accelerated ageing method and compared to the seeds of the same provenance, collected in 1992 (control). The vigor and the vitality of the Norway spruce seeds depend on the age of seeds. After 6 days of experiment both samples of seeds (artificially aged seeds and control) expressed the same percentage of germination and similar electrolyte leakage. Analysis of protein composition in the extracts showed an increased amount of some low molecular-weight proteins in artificially and naturally aged seeds compared to the control. Our results indicate similar level of P-ATPase activity in natural, artificially aged and control seeds. This suggests that natural ageing process can involve changes in plasma membrane protein composition but does not affect the P-ATPase activity.
Źródło:
Dendrobiology; 2002, 47 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza porównawcza stopnia uszkodzenia jesionu wyniosłego (Fraxinus excelsior L.) i olszy czarnej (Alnus glutinosa (L.) Gaertn.), rosnących w zmieszaniu lub bliskim sąsiedztwie
Autorzy:
Dmyterko, E.
Tomusiak, R.
Wojtan, R.
Bruchwald, A.
Powiązania:
https://bibliotekanauki.pl/articles/1022270.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
witalnosc
defoliacja
uszkodzenia drzew
sasiedztwo roslin
jesion wyniosly
Fraxinus excelsior
lesnictwo
olsza czarna
stopien zmieszania drzew
zamieranie drzew
Alnus glutinosa
drzewa lesne
tree dieback
defoliation
vitality
synthetic damage indicator
fraxinus excelsior
alnus glutinosa
Opis:
The paper presents a comparative analysis of the degree of damage to common ash and black alder trees growing in mixture or a close neighbourhood. Three variants of the damage assessment method were applied in the analysis: defoliation−based variant I, vitality variant II and synthetic damage indicator−based variant III. It was demonstrated that on average ash stands were more damaged than alder stands. This allowed to put forward a hypothesis that there is an alternative to replace ash with black alder on some, especially wet habitats where the dieback process is largely advanced.
Źródło:
Sylwan; 2005, 149, 02; 3-11
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessing the organizational commitment, subjective vitality and burnout effects on turnover intention in private universities
Autorzy:
Parmar, Vishnu
Channar, Zahid Ali
Ahmed, Rizwan Raheem
Streimikiene, Dalia
Pahi, Munwar Hussain
Streimikis, Justas
Powiązania:
https://bibliotekanauki.pl/articles/19322490.pdf
Data publikacji:
2022
Wydawca:
Instytut Badań Gospodarczych
Tematy:
turnover intention
job burnout
emotional exhaustion
organizational cynicism
professional efficacy
subjective vitality
affective commitment
normative commitment
continuance commitment
Opis:
Research background: Faculties of private universities are under immense working pressure, which causes stress and burnout. The job burnout triggers the psychological pressure, which increases the turnover intention.  Purpose of the article: The undertaken study aims to evaluate the scale of burnout with its three-element model, which affects faculty members of private universities of Pakistan. This research also aims to examine the mediating effect of organizational commitment (e.g., affective, normative & continuance commitments), and moderating influence of subjective vitality in a relationship of job burnout and its constituents, for example exhaustion, efficacy & cynicism, and the turnover intention. Methods: The 712 responses were collected through a structured questionnaire from the junior and senior faculty members of private universities of Pakistan. The data was examined by using second order partial least square - structural equation approach - PLS-SEM. Findings & value added: The research findings exhibited that emotional exhaustion, cynicism, and professional efficacy have a direct significant influence on job burnout. The findings further demonstrated that the job burnout has a cogent and negative impact on faculty turnover intention. The findings demonstrated that elements of organizational commitment (e.g., normative, affective & continuance commitments) have a forceful serial mediating influence between burnout & its constituents for example exhaustion, efficacy & cynicism, and turnover intention. Finally, the findings have revealed that subjective vitality has a significant and positive impact as a moderating variable in a relationship between job burnout and turnover intention. This research has a long-term theoretical contribution, as it provides a novel conceptual framework, which can be replicated in different industries. Thus, this unique model provides the solution to reduce employees' turnover for other industries as well. 
Źródło:
Oeconomia Copernicana; 2022, 13, 1; 251-286
2083-1277
Pojawia się w:
Oeconomia Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Authentic Leadership, Leader-Member Exchange, Job Thriving and Creativity Nexus from Public Organisation Context
Автентичне лідерство, обмін між лідерами та членами організації, процвітання роботи та творчий звязок у контексті громадської організації
Autorzy:
Ononye, Uzoma H.
Powiązania:
https://bibliotekanauki.pl/articles/21302340.pdf
Data publikacji:
2023
Wydawca:
Dnieprowski Uniwersytet Narodowy im. Ołesia Honczara
Tematy:
Authenticity
Creativity
Leadership
Leader-Member Exchange
Learning
Thriving
Vitality
автентичність
творчість
лідерство
обмін між лідерами та членами
навчання
процвітання
життєздатність
Opis:
Purpose: The study is aimed at examining authentic leadership influences on creativity in a public organisation given job thriving and leader-member exchange as a mediator and a moderator respectively. Design/Method/Approach: The cross-sectional research design was adopted with data collected via a structured questionnaire from 269 mid-level employees who were healthcare professionals working in hospitals and primary healthcare centres under the purview of the Delta State Ministry of Health in Nigeria. The partial least square (PLS) method was adopted as the analytical tool for hypothesis testing. This structural equation modelling (SEM) method was performed with SMARTPLS 3.3.3 software. Findings: The results demonstrate that authentic leadership has a non-significant relationship with creativity except through job thriving. Further, the moderated mediation result shows that leader-member exchange strengthens the relationship between job thriving and creativity and enhances positive influences of authentic leadership in a creativity context. Theoretical Implications: The study provides plausible evidence on the pathways through which authentic leadership, as a positive form of leadership, explicates influence on creativity, wherein job thriving and leader-member exchange interact as contextual variables. Practical Implications: Public organisations should introduce regular leadership training to enable managers to learn behaviours that would enhance their authenticity at work. An assessment can be integrated into leadership training programmes to ensure its efficacy. Originality/Value: Not all employees are motivated to engage in creative work in bureaucratized settings due to the leadership behaviour in practice. This study demonstrates how authentic leadership engenders creativity through the enhancement of certain contextual variables: job thriving and leader-member exchange. Research Limitations/Future Research: This research was limited to a specific public organisation and Nigerian State. Although the empirical information provided herein may be insightful and have applicable value for other public organisations as well as Nigerian States, it is important to replicate this research with a broader sample and geographic spread to improve its generality. The study relies on cross-sectional data which may offer little explanations of causality effects among the latent variables, future research works should consider a longitudinal research approach for clearer and concrete inferences.
Мета роботи: Дослідження спрямоване на вивчення впливу автентичного лідерства на креативність у громадській організації з огляду на процвітання робочих місць та обмін між лідером і членами організації в ролі посередника та модератора відповідно. Дизайн / Метод / Підхід дослідження: Було застосовано крос-секційний дизайн дослідження, дані були зібрані за допомогою структурованої анкети від 269 працівників середньої ланки, які є медичними працівниками, що працюють у лікарнях та центрах первинної медико-санітарної допомоги, підпорядкованих Міністерству охорони здоров'я штату Дельта в Нігерії. В якості аналітичного інструменту для перевірки гіпотез був прийнятий метод найменших квадратів (МНК). Цей метод моделювання структурних рівнянь (SEM) був виконаний за допомогою програмного забезпечення SMARTPLS 3.3.3. Результати дослідження: Результати демонструють, що автентичне лідерство має незначний зв'язок із креативністю, окрім як через процвітання на роботі. Крім того, модерований результат посередництва показує, що обмін між лідером і членами групи зміцнює взаємозв'язок між успішністю роботи і креативністю та посилює позитивний вплив автентичного лідерства в контексті креативності. Теоретична цінність дослідження: Дослідження надає правдоподібні докази того, як автентичне лідерство, як позитивна форма лідерства, експлікує вплив на креативність, де успішність роботи та обмін між лідером і членами групи взаємодіють як контекстуальні змінні. Практична цінність дослідження: Громадські організації повинні запровадити регулярні тренінги з лідерства, щоб дати можливість керівникам навчитися поведінці, яка б сприяла підвищенню їхньої автентичності на роботі. Оцінювання може бути інтегроване в програми навчання лідерства для забезпечення їхньої ефективності. Оригінальність / Цінність дослідження: Не всі працівники вмотивовані займатися творчою роботою в бюрократизованому середовищі через лідерську поведінку на практиці. Це дослідження демонструє, як автентичне лідерство породжує креативність через покращення певних контекстуальних змінних: процвітання роботи та обмін між лідером і членами команди. Обмеження дослідження / Майбутні дослідження: Це дослідження було обмежене конкретною громадською організацією та державою Нігерія. Хоча емпірична інформація, надана в цьому дослідженні, може бути корисною і мати цінність для інших громадських організацій, а також для штатів Нігерії, важливо повторити це дослідження з ширшою вибіркою і географічним охопленням, щоб підвищити його загальність. Дослідження спирається на дані поперечних зрізів, які можуть недостатньо пояснити причинно-наслідкові зв'язки між латентними змінними, тому в майбутніх дослідженнях слід розглянути можливість застосування лонгітюдного підходу для отримання більш чітких і конкретних висновків.
Źródło:
European Journal of Management Issues; 2023, 31, 2; 93-101
2519-8564
Pojawia się w:
European Journal of Management Issues
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cechy jakościowe podrostów dębowych rosnących pod osłoną drzewostanów sosnowych
Quality traits of undergrowth oaks beneath the canopy of Scots pine stands
Autorzy:
Aleksandrowicz-Trzcińska, M.
Pewniak, B.
Żybura, H.
Powiązania:
https://bibliotekanauki.pl/articles/985772.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
hodowla lasu
drzewostany sosnowe
siedlisko boru mieszanego
siedlisko lasu mieszanego swiezego
podrost
dab
Quercus
cechy jakosciowe
odnowienia podokapowe
trunk quality
crown quality
vitality
development trend
trees with future potential
Opis:
Scots pine stands in central Poland are now seen to be experiencing dynamic development of lower layers formed by oaks. The under−canopy natural renewal taking place in this way is sometimes characterised by good silvicultural quality, and could therefore be taken advantage of in the process of stand conversion. The study assess the quality of existing undergrowth layers of oak present in older stands of Scots pine, most especially from the point of view of their suitability for subjection to further silvicultural measures. The research material was collected in 10 objects where site type was classified as mesic mixed coniferous site type (BMśw) as well as in 11 ones with mesic mixed broadleaved forest (LMśw) site type. In each site type, 2 or 3 stands were selected to typify undergrowth layers aged 15, 20, 25 or 30 years. Assessment of oak undergrowth trees was made on the basis of 4−point scale in case of trunk or crown quality and vitality, and on a 3−point scale when vitality and the development trend were concerned. Next we selected the trees with future potential characterised by the highest quality from the point of view of all studied traits. A further determination concerned the influence on the traits in these best trees of the oak understorey that was exerted by biometric features of both the sheltering Scots pine stand and the under−growth itself. The studied undergrowth oaks are of either very good or good quality. Around 90% of these young trees could be assigned to 1st or 2nd quality class with the respect of all of analysed traits. Furthermore, fertility of the site type was found not to have any influence on the quality of the young oaks. However, where the number of trees identified as having future potential is concerned, influence was demonstrated for density of trees in both stand and the undergrowth layer, as well as their height, breast−height diameter and basal area. Oaks forming the lower layer beneath Scots pine stands are thus characterised by good quality and growth trends, to the extent that this suggests allowing further growth to take place, with inclusion within the main stand or next generation.
Źródło:
Sylwan; 2018, 162, 04; 267-276
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ego Depletion Sensitivity as the Mediator Between Avoidance Temperaments and Subjective Vitality
Autorzy:
Adil, Adnan
Kanwal, Asmara
Yasin, Ghulam
Ameer, Sadaf
Powiązania:
https://bibliotekanauki.pl/articles/2129975.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Ego depletion sensitivity
temperament
subjective vitality
Opis:
The present study examined the mediating role of ego depletion sensitivity between temperaments and subjective vitality. The sample of the present research consisted of 210 undergraduate students of the University of Sargodha. Temperament, ego depletion sensitivity, and subjective vitality were operationalized through Approach-Avoidance Temperament Questionnaire (Elliot & Thrash, 2010), Depletion Sensitivity Scale (Salmon et al., 2014), and Subjective Vitality Scale (Ryan & Frederick, 1997), respectively. Correlation analysis depicted that ego depletion sensitivity was positively correlated with avoidance temperament and negatively correlated with subjective vitality. Furthermore, ego depletion sensitivity mediated between avoidance temperament and subjective vitality. Implications of the study along with its limitations and suggestions were discussed.
Źródło:
Polish Psychological Bulletin; 2021, 52, 2; 188-196
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Elementy biografii językowych przedstawicieli polskiej mniejszości narodowej na pograniczu: Iwano-Frankiwsk (dawny Stanisławów)
Elements of language biographies of residents of the Polish national minority on the borderland: Ivano-Frankivsk (formerly Stanisławów)
Autorzy:
Pelekhata, Olena
Powiązania:
https://bibliotekanauki.pl/articles/2147583.pdf
Data publikacji:
2022-01
Wydawca:
Towarzystwo Kultury Języka
Tematy:
język mniejszości narodowej
metoda biografii językowej
pogranicze
żywotność języka polskiego
language of the national minority
method of language biography
borderland
vitality of Polish
Opis:
W artykule poddano analizie elementy biografii językowych przedstawicieli polskiej mniejszości narodowej w Iwano-Frankiwsku (dawnym Stanisławowie). Biografie językowe osób mieszkających na pograniczu kultur w kontekście procesów historycznych i społecznych podzielono na cztery grupy. Podstawę badań stanowiły wywiady językowe przeprowadzone w środowisku mieszkańców Iwano-Frankiwska w wieku powyżej 70 lat, posługujących się w życiu codziennym co najmniej dwoma językami. W tekście opisano żywotność oraz sfery funkcjonowania języka polskiego, z uwzględnieniem polskich organizacji.
The paper analyses elements of language biographies of residents of the Polish national minority in Ivano-Frankivsk (formerly Stanisławów). The language biographies of people living on the borderline of cultures in the context of historical and social processes have been divided into four groups. The research was based on linguistic interviews conducted among the inhabitants of Ivano-Frankivsk aged over 70, who used at least two languages in their everyday life. The text describes the vitality and functioning of the Polish language, including Polish organisations.
Źródło:
Poradnik Językowy; 2022, 790, 1; 89-108
0551-5343
Pojawia się w:
Poradnik Językowy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Environmental pollution changes in membrane lipids, antioxidants and vitality of Scots pine [Pinus sylvestris L.] pollen
Autorzy:
Pukacki, P M
Chalupka, W.
Powiązania:
https://bibliotekanauki.pl/articles/57005.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Scotch pine
pollen
pollen grain
Pinus sylvestris
environment pollution
membrane
vitality
fatty acid
antioxidant
freezing stress
membrane lipid
phospholipid
Opis:
Investigations were carried out on pollen grains of Scots pine (Pinus sylvestris L.) collected from trees at 1.5, 3, 4 km and control, 20 km from the Luboń factory producing mineral fertilisers. The percentage of germination of pollen formed close to the pollution source was ca 20% lower compared to the control pollen. Lowered vitality of the pollen was effected in changes of the structure of cytoplasmic membranes. Pollen from the polluted area contained ca 15% less total phospholipids, mainly phosphatidylcholine and phosphatytidylinositol and had a lower content of soluble proteins and less of low molecular antioxidants, such as thiols and ascorbic acid. Composition of total fatty acid in phospholipids fractions showed a significant reduction in the degree of unsaturation of fatty acids. Pollen originating from the polluted area and stored at -30°C showed considerably stronger degradation of cytoplasmic membranes than control.
Źródło:
Acta Societatis Botanicorum Poloniae; 2003, 72, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Graiurile poloneze din Poiana Micului şi Bulai (Bucovina de Sud) – o perspectivă sociolingvistică de tip comparativ pe baza ALAB
The Polish dialects from Poiana Micului and Bulai (South Bukowina) – a sociolinguistic comparative perspective based on ALAB
Autorzy:
Olariu, Florin-Teodor
Olariu, Veronica
Powiązania:
https://bibliotekanauki.pl/articles/1048063.pdf
Data publikacji:
2020-10-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Bukovina
Poles
language contact
ethnolinguistic vitality
language attitudes
Opis:
The Polish communities from Bukovina have been studied in the last period through several research projects, initiated by both Polish and Romanian researchers. One of them is the Audiovisual Linguistic Atlas of Bukovina (ALAB), which aims to realize a radiography in multimedia format of the ethnolinguistic diversity of Bukovina. Regarding the Polish ethnic minority, in 2016 two field studies have been carried out in two localities: Bulai and Poiana Micului. Following the analysis of the material thus obtained, we managed to capture some characteristics both at the linguistic and the sociolinguistic level that individualize the two communities. Thus, from a linguistic point of view, the two dialects are different both at phonetic and lexical level, the Bulai dialect being more similar to the Polish literary language. At the sociolinguistic level has been observed the presence of a strong epilinguistic component in the Polish people speech, based on the representations and the attitudes that the Polish ethnic groups have regarding the status and the vitality of their own dialects.
Źródło:
Studia Romanica Posnaniensia; 2020, 47, 3; 55-78
0137-2475
2084-4158
Pojawia się w:
Studia Romanica Posnaniensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Humanistyczne aspekty fasad medialnych : wybrane zagadnienia
Humanistic aspects of media facades : selected issues
Autorzy:
Celewicz, P.
Powiązania:
https://bibliotekanauki.pl/articles/345455.pdf
Data publikacji:
2013
Wydawca:
Politechnika Krakowska im. Tadeusza Kościuszki. Wydział Architektury. Katedra Kształtowania Środowiska Mieszkaniowego
Tematy:
fasada medialna
identyfikacja
tożsamość
symbol miejsca
żywotność
media facade
identification
identity
symbol of the place
vitality
Opis:
Niniejszy artykuł podejmuje tematykę humanistycznych aspektów realizacji obiektu architektonicznego Indenmann, który jest jednocześnie trójwymiarową fasadą medialną. Wieża widokowa, jak również całe założenie, jest architekturą symboliczną o wielorakim znaczeniu. Architektura pełni rolę edukacyjną jako pomnik – przestroga oraz kształtuje identyfikacje miejsca i regionu, markę gminy. Strażnik miejsca to także atrakcja turystyczna oraz znak w krajobrazie pomagający w orientacji.
This article concerns the theme of the humanistic aspects of implementing the architectural object Indenmann which is a three-dimensional media façade, too. The view tower as well as the entire layout is symbolical architecture with a multisided meaning. It acts as an educational monument – a warning – and shapes the identification of the place and the region, the quality of the commune with respect to its future and growth. “The guard of the place” is also a tourist attraction and a sign in the landscape which helps to get one’s bearings. Moreover, it is an interesting example of the self-governmental authorities’ long-term policy concerning the future of the region with its inhabitants.
Źródło:
Środowisko Mieszkaniowe; 2013, 11; 63-67
1731-2442
2543-8700
Pojawia się w:
Środowisko Mieszkaniowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kluczowe koncepcje kształtujące współczesne miasto
Key Concepts Shaping the Contemporary City
Autorzy:
Janiszek, Monika
Powiązania:
https://bibliotekanauki.pl/articles/2021439.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Smart city
sustainable development
urban resilience
vitality city
Źródło:
Studia komitetu przestrzennego zagospodarowania kraju PAN; 2018, 184; 118-130
0079-3507
Pojawia się w:
Studia komitetu przestrzennego zagospodarowania kraju PAN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Konduktometryczna metoda oceny żywotności nasion sosny zwyczajnej (Pinus sylvestris L.) i daglezji zielonej (Pseudotsuga menziesii (Mirb.) Franco)
Conductivity test for Scots pine (Pinus sylvestris L.) and Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) seeds vitality assessment
Autorzy:
Jastrzębowski, S.
Kantorowicz, W.
Aniśko, E.
Ukalska, J.
Powiązania:
https://bibliotekanauki.pl/articles/988974.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
hodowla lasu
nasiennictwo
sosna zwyczajna
Pinus sylvestris
daglezja zielona
Pseudotsuga menziesii
nasiona
zywotnosc nasion
metody oceny
konduktometria
vitality class
electrolyte leakage
conductometry
seed
Opis:
The level of damage to the cell membranes is a sign of aging of the seeds and a decrease in their viability. Conductometric seed testing method indirectly utilizes uncontrolled leakage of ions from seeds with damaged cell membranes to assess their viability. This involves the use of an electrical conductivity of the aqueous solution, in which seeds are soaked. The research was conducted in the years 2011−2014 and aimed at developing the methodology of evaluation of Scots pine and Douglas fir seeds by conductivity test. The aim of the study was to determine the relationship between electrolyte leakage and germination capacity of Scots pine and Douglas fir seeds. 402 samples of Scots pine seed and 90 specimens of Douglas fir seed from all over Poland were tested. The research material was both freshly harvested and stored. Scots pine seeds were obtained in the years 2008−2014, while Douglas fir – 2003−2013 as well as ones stored in the refrigerator for 15 years. Conductivity test and standard seed germination procedure of the analyzed species were used. For both Scots pine and Douglas fir, we noted that, as the electrolyte leakage rate increased, the germination capacity of the seed decreased. So we decided to test whether the vitality of the seeds was determined by means of a conductivity test. The best−fit regression model was determined and the mean expected germination capacity in the viability classes was calculated. 95% confidence intervals for the regression function were also determined. Evaluation of the viability of the seeds by means of the conductometric method is especially useful for seeds requiring a long stratification period (e.g. Douglas fir to determine the potential loss of their vitality. Although the ISTA seed evaluation rules do not require conductivity test for evaluating the seeds of Scots pine and Douglas fir, it may be applicable in situations where it is necessary to perform a rapid assessment of viability before spring sowing.
Źródło:
Sylwan; 2017, 161, 11; 927-934
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kryteria określania uszkodzenia jodły (Abies alba Mill.)
Criteria of assessment the damage to silver fir
Autorzy:
Dmyterko, E.
Powiązania:
https://bibliotekanauki.pl/articles/1012879.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
jodla pospolita
uszkodzenia drzew
korony drzew
Abies alba
cechy morfologiczne
lesnictwo
kryteria oceny
drzewa lesne
criteria of assessment the damage to the trees
defoliation
vitality
tree−top condition
silver fir (abies alba)
Opis:
The paper presents criteria of assessment the damage to silver fir that were elaborated on the basis of the features describing the development of fir crown that is assimilation apparatus condition (feature A), tree− top condition (feature B) and tree vitality (feature C). Feature A is based on the defoliation, feature B assesses length of last height increments and branching, while feature C takes into account loss of branches in the middle part of the crown and percentage of the alive shoots on branches of higher order. Determined criteria may be applied in methods of the assessment the damage to stands and forests of units of higher position in different classifications.
Źródło:
Sylwan; 2008, 152, 04; 3-12
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kryteria określania uszkodzenia świerka
Criteria for assessment of the damage to Norway spruce
Autorzy:
Dmyterko, E.
Bruchwald, A.
Powiązania:
https://bibliotekanauki.pl/articles/1016245.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
defoliacja
uszkodzenia drzew
stan wierzcholka drzewa
zywotnosc
Picea abies
lesnictwo
kryteria oceny
swierk pospolity
drzewa lesne
criteria for assessment of the damage to trees
defoliation
vitality
top condition
norway spruce
Opis:
The paper presents the criteria for assessment of the damage to Norway spruce determined on the basis of its crown development. Three features were included: condition of the assimilation apparatus (feature A), condition of the tree−top (feature B) and tree vitality (feature C). Feature A is based on the defoliation. Feature B assesses the length of the last height increments and their branching models. Feature C includes the loss of branches in the middle part of the crown, the presence of branches of 2nd and higher orders as well as condition of proventive sprouts (developed from dormant buds). Determined criteria may be applied in the methods of assessment of the damage to stands and larger forest objects e.g. management region, forest region, nature−forest regions.
Źródło:
Sylwan; 2007, 151, 06; 12-23
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł

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