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Wyświetlanie 1-15 z 2434
Tytuł:
Mauritius: The Drivers of Growth – Can the Past Be Extended?
Autorzy:
Svirydzenka, Katsiaryna
Petri, Martin
Powiązania:
https://bibliotekanauki.pl/articles/565684.pdf
Data publikacji:
2017-10-10
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
Growth
Mauritius
Growth accounting
Opis:
Mauritius’s economic performance since its independence has been called “the Mauritian miracle” and the “success of Africa” (Romer, 1992; Frankel, 2010; Stiglitz, 2011). However, the future growth potential is more uncertain. In this paper, we use growth accounting to analyze the sources of past growth and project potential ranges of future growth through 2033 under various policies. Growth averaged 4½ percent over the past 20 years. Our baseline suggests future growth rates around 3¼ percent, but growth could reach 4–5 percent with strong pro-active policies including (i) improving investment and savings rates; (ii) improving the efficiency of social spending and public enterprise reforms; (iii) investment in education and education reforms; (iii) labor market reforms; and (iv) further measures to reduce bottlenecks and increase productivity. With policies capable of generating 5 percent growth, Mauritius could reach high-income status in 2021, 4 years earlier than under the baseline.
Źródło:
Journal of Banking and Financial Economics; 2017, 2(8); 54-83
2353-6845
Pojawia się w:
Journal of Banking and Financial Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of growth retardants on growth and flower bud formation in rhododendron and azalea
Autorzy:
Marosz, A
Matysiak, B.
Powiązania:
https://bibliotekanauki.pl/articles/41091.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
azalea
rhododendron
flower bud formation
plant growth
growth retardant
growth inhibition
growth regulator
plant cultivar
Opis:
Plants of ‘Catawbiense Boursault’ and ‘Eskimo’ rhododendrons or ‘Cannon’s Double’ and ‘Kilian’ azalea grown in 4 l containers were treated twice with chlormequat (2000, 4000 and 8000 mg · dm-3), trinexapac-ethyl (50, 100, 200, 400 mg · dm-3), daminozide (2500, 5000, 7500 mg · dm-3), proxeadione calcium (75, 150, 300 mg · dm-1) and once with paclobutrazol (50, 100, 200, 400 mg · dm-3). Shoot length of the subsequent growth flush following the treatments decreased with increasing rates of the growth retardants. The number of flower buds per plant increased with increasing rates of pacloburazol, chlormequat and daminozide. Prohexadione calcium was less effective in flower bud initiation and the worst results were obtained with trinexapac-ethyl.
Źródło:
Dendrobiology; 2005, 54; 35-40
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Growth of Companies and Growth Potential on the Example of Business Services for Firms Sector on NewConnect Market
Autorzy:
Bolek, Monika
Czulak, Bartosz
Powiązania:
https://bibliotekanauki.pl/articles/1022835.pdf
Data publikacji:
2020-09-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
growth
growth potential
business services sector
Opis:
The article is related to the growth of young companies operating in the business services for firms sector, that are listed on the Warsaw Stock Exchange alternative market – NewConnect. The growth opportunity models are introduced to explain the growth process of these companies together with other controlling factors such as profitability, size of the company and its earnings. As the result of the research it is found that growth potential is negatively correlated with assets and equity growth in short term, but it affects positively earnings per share growth in a longer, three-year period. It can therefore be concluded that in the sector taken into consideration, investors’ decisions reflected in the growth potential measures may be translated into company’s value growth only in a longer term.
Źródło:
Finanse i Prawo Finansowe; 2020, 3, 27; 7-24
2391-6478
2353-5601
Pojawia się w:
Finanse i Prawo Finansowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermodynamics of irreversible plant cell growth
Autorzy:
Pietruszka, M
Lewicka, S.
Pazurkiewicz-Kocot, K.
Powiązania:
https://bibliotekanauki.pl/articles/58662.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
thermodynamics
irreversible process
plant cell
plant growth
cell wall
yielding
growth stimulator
growth inhibitor
modified growth equation
Opis:
The time-irreversible cell enlargement of plant cells at a constant temperature results from two independent physical processes, e.g. water absorption and cell wall yielding. In such a model cell growth starts with reduction in wall stress because of irreversible extension of the wall. The water absorption and physical expansion are spontaneous consequences of this initial modification of the cell wall (the juvenile cell vacuolate, takes up water and expands). In this model the irreversible aspect of growth arises from the extension of the cell wall. Such theory expressed quantitatively by time-dependent growth equation was elaborated by Lockhart in the 60's.The growth equation omit however a very important factor, namely the environmental temperature at which the plant cells grow. In this paper we put forward a simple phenomenological model which introduces into the growth equation the notion of temperature. Moreover, we introduce into the modified growth equation the possible influence of external growth stimulator or inhibitor (phytohormones or abiotic factors). In the presence of such external perturbations two possible theoretical solutions have been found: the linear reaction to the application of growth hormones/abiotic factors and the non-linear one. Both solutions reflect and predict two different experimental conditions, respectively (growth at constant or increasing concentration of stimulator/inhibitor). The non-linear solution reflects a common situation interesting from an environmental pollution point of view e.g. the influence of increasing (with time) concentration of toxins on plant growth. Having obtained temperature modified growth equations we can draw further qualitative and, especially, quantitative conclusions about the mechanical properties of the cell wall itself. This also concerns a new and interesting result obtained in our model: We have calculated the magnitude of the cell wall yielding coefficient (T) [m3 J-1•s-1] in function of temperature which has acquired reasonable numerical value throughout.
Źródło:
Acta Societatis Botanicorum Poloniae; 2006, 75, 3; 183-190
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Teoria biegunów wzrostu François Perroux i implementacja jej założeń w Hiszpanii w latach 1964-1975
The growth poles theory by François Perroux and the implementation of its assumptions in Spain in the years of 1964-1975
Autorzy:
Piętak, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/570122.pdf
Data publikacji:
2014
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
economic growth
growth poles theory
regional policy
Opis:
This paper is devoted to the analysis of the concept of growth poles theory elaborated by an outstanding French professor François Perroux. In the first part the author presents philosophical and methodological analysis of Perroux’s concepts. The second part is devoted to the analysis of the implementation of the growth poles theory in Spain in the years 1964−1975. The originality of Perroux’s concept lies in the introduction of economic space in a consideration and the omission of the role played by physical space. On the other hand, Perroux’s concept is the generalization of the method applied much earlier by other economists. Perroux’s growth poles theory is the part of theory of harmonized growth, but harmonized growth is not the concept of harmonious growth understood as the natural harmony existing in the economic life. Perroux indicates the need for permanent harmonizing of economic forces for social welfare. Perroux is convinced the economic growth is unsustainable, not only spatially but also by sector. That opinion was not something new. He simply belongs to a group of researchers of economics convinced of unsustainable growth. However, there is one difference. Perroux, not like the others, limits only to establish the fact. He tries to explain why that is. Therefore, he created the theory which explained the phenomenon of unsustainable economic growth. He believes the economic growth appears at the points with different frequencies and at different time. Perroux also points to the industrial complexes and entire industries that can be a source of economic growth which he calls “growth poles”. Growth poles policy was very popular in the 60s and 70s. Many countries like France, Spain, Greece or Italian had poles in their economic plans. This tendency was halted as a result of the oil crisis in 1973. Then the active policy of the state in economic planning began to give the way to economic liberalism. In case of Spain, the growth poles policy consisted in the stimulation of industry formation in regions which give hope for accelerated industrial development. During three consecutive periods of planning in Spain a number of poles situated in different regions were created. At that time in Spain there was a problem of migration towards rich regions like Catalonia, Madrid or Basque Country. Therefore, the aim of the implementation of the poles was not only to develop the industry, but also to stop the migration process. One way to evaluate the functioning of the poles in the Spanish economy is examining the amount of established companies, the level of production and the rate of economic growth obtained in regions with poles, the balance of trade between a region with the pole and surrounding regions. The method used by the author consists in comparing two periods: the first period without the pole and the second period with the pole. The analysis also compares the results obtained with the national average.
Źródło:
Ekonomia XXI Wieku; 2014, 1(1); 185-205
2353-8929
Pojawia się w:
Ekonomia XXI Wieku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic growth and its determinant: a crosscountry evidence
Autorzy:
Adepoju, Adedayo A.
Ogundunmade, Tayo P.
Powiązania:
https://bibliotekanauki.pl/articles/1194461.pdf
Data publikacji:
2019-07-02
Wydawca:
Główny Urząd Statystyczny
Tematy:
economic growth
panel data analysis
growth determinants
Opis:
Empirical evidence from a panel of 126 countries, over the time period of 2010 to 2014, indicates that economic growth is dependent on various factors. This paper finds that government expenditure control, reduced inflation and increased trade openness are the factors that boost the economic growth of a country. Significant evidence is seen for government consumption, fiscal policy and trade openness. No significant relationship has been observed between exchange rate and economic growth, whereas unemployment influences output for African countries. The cross regional analysis of Asian, European, African, Caribbean, and American countries gives specific determinants for these regions. Economic growth is also analysed in developing, developed, least developed, Muslim and petroleum exporting and emerging countries. The results of this study validate the dependence of economic growth on various factors. Fiscal balance has shown a consistent positive relationship with economic growth throughout the analyses. Fiscal balance and unemployment rate played their role in the growth of African countries. Inflation rates and increased openness were significant for some regions. Exchange rate did not return significant coefficients for any of the sub-regions. Government consumption, trade openness, policy interest rate and industrial production rate showed significant effect for different regions of the world.
Źródło:
Statistics in Transition new series; 2019, 20, 2; 69-84
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Finance and Growth Nexus Re-Examined: Do All Countries Benefit Equally?
Autorzy:
Barajas, Adolfo
Chami, Ralph
Seyed Reza, Yousefi
Powiązania:
https://bibliotekanauki.pl/articles/565730.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
Growth
Financial Development
Inclusive Growth
Financial Access
Opis:
A large theoretical and empirical literature has focused on the impact of financial deepening on economic growth throughout the world. This paper contributes to the literature by investigating whether this impact differs across regions, income levels, and types of economy. Using a rich data set for 150 countries for the period 1975–2005, dynamic panel estimation results suggest that the bene ficial effect of financial deepening on economic growth in fact displays measurable heterogeneity; it is generally smaller in oil exporting countries; in certain regions, such as the Middle East and North Africa (MENA); and in lower-income countries. Further analysis suggests that these differences might be driven by the degree of competition, and related to differences in the ability to provide widespread access to financial services.
Źródło:
Journal of Banking and Financial Economics; 2016, 1(5); 5-38
2353-6845
Pojawia się w:
Journal of Banking and Financial Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of a Logistic Function to Describe the Growth of Fodder Galega
Autorzy:
Rymuza, K.
Bombik, A.
Powiązania:
https://bibliotekanauki.pl/articles/123385.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
oriental goat’s rue
logistic function
growth equation
growth rate equation
growth rate
Opis:
It was attempted in the paper to describe the growth of oriental goat’s rue (Galega orientalis Lam.) growth by means of a logistic function. The studies demonstrated that the function describes empirical data well as the coefficients of determination obtained ranged between 97 to 98%, depending on the growing season. The estimated function parameters indicate that both the plant height and growth rate were conditioned by thermal conditions and moisture during the growing season. Plants had the longest stems in the year 2010 (127.9 cm), and the shortest in 2008 (105.9 cm). The maximum growth rate ranged from 2.12 to 3.97 cm per day in, respectively, 2009 and 2008. Also the inflection point, the point at which plants grew the fastest, depended on the conditions of the growing season.
Źródło:
Journal of Ecological Engineering; 2017, 18, 1; 125-131
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of dynamic growth of food production in Bulgaria
Ocena dynamiki wzrostu produkcji żywności w Bułgarii
Autorzy:
Kopeva, D.
Sterev, N.
Blagoev, D.
Zhelev, P.
Powiązania:
https://bibliotekanauki.pl/articles/37286.pdf
Data publikacji:
2015
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
growth assessment
dynamic growth
food production
reindustrialization
Bulgaria
Opis:
Perspectives for competitive growth are put in the core of the re-industrialization policy of the European Union for the next program period, and respectively are key issue for the Bulgarian industrial policy. Re-industrialization of the Bulgarian economy is possible in terms of support for competitive industries at present, but also to support industries that are at the bottom of competitiveness. The methodology for selection of appropriate “priority” sub-sectors and production specializations, is based on the following two principles: 1. A combination of economic criteria (at national and company level) and social criteria; 2. Measures targeted both: certain sub-sectors and production specializations that either have a competitive advantage, or are at the bottom of the rankings for competitive advantage. On the basis of analysis six production specializations in food industry were identifi ed for which specifi c policy measures have to be developed along the chain raw materials/inputs – production-marketing/export.
Perspektywy konkurencyjnego wzrostu są w centrum uwagi polityki reindustrializacji w Unii Europejskiej w perspektywie finansowej 2014 roku i odpowiednio jest to kluczowe zagadnienie również w polityce przemysłowej Bułgarii. Reindustrializacja gospodarki Bułgarii jest możliwa w zakresie wsparcia już obecnie konkurencyjnych gałęzi, jak również tych, które będą kluczowe dla konkurencyjności gospodarki. Metodologia wyboru właściwych priorytetowych sektorów i produktów jest oparta na następujących zasadach: połączenia kryteriów ekonomicznych (na poziomie krajowym i na poziomie przedsiębiorstwa) i społecznych, ukierunkowania działań na wybrane podsektory i specjalizacje produkcyjne (produktowe), które cechują się przewagą konkurencyjną lub są podstawą przewag konkurencyjnych.
Źródło:
Acta Scientiarum Polonorum. Oeconomia; 2015, 14, 1
1644-0757
Pojawia się w:
Acta Scientiarum Polonorum. Oeconomia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Blue growth circular innovation
Autorzy:
Paulauskas, S.
Powiązania:
https://bibliotekanauki.pl/articles/116557.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Blue growth
innovation
Blue growth methodology
Blue growth strategy
CleanTech
maritime economy
SmartTech
EU Blue growth
Opis:
Maritime sector’s growth is defined and specified by Europe 2020 strategy for smart, sustainable and inclusive growth, Integrated maritime policy and Blue growth strategy. However, practical implementation of such positive regulations isn’t so resultative, because Blue growth, same as overall EU zone economic development meets significant troubles. Blue growth methodology needs to be more certain and sustained in overall system of EU development approaches. Here is highlighted, that further growth is possible in several areas: aquaculture, coastal tourism, marine biotechnology, ocean energy, seabed mining. Majority of core maritime activities as industry, logistic and infrastructure hasn’t provided as valuable in reason of methodological understanding of a growth in terms of physical and economic growth. Applied author Circular economy 3.0 methodology discovers sense of qualitative growth of holistic maritime economy system what enforces all maritime branches by advanced growth abilities of CleanTech, HealthTec and SmartTech approaches. This opens panel for discussion with business, politicians, communities on matter of improvement EU Blue growth strategy towards radicalisation of EU growth trends.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 4; 813-818
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Consumption-led expansions lead to lower future output growth
Autorzy:
Virén, Matti
Powiązania:
https://bibliotekanauki.pl/articles/2176613.pdf
Data publikacji:
2023-02-28
Wydawca:
Główny Urząd Statystyczny
Tematy:
economic growth
demand management
consumption-led growth
Opis:
When assessing future growth prospects, does the current structure of demand matter, i.e. does it affect the future growth? This question is analysed in our paper using global and EU panel data. The result is quite striking: consumption-led growth - either in terms of private or public or total consumption - is slower than investment-led or exports-led growth. The same qualitative result is obtained irrespectively of the length of the past growth period (lag window), yet the more often the past is characterised by consumption-led growth, the slower the growth rate is in the future. In this context, our research provides important insights for both structural and cyclical policies.
Źródło:
Przegląd Statystyczny; 2022, 69, 3; 44-59
0033-2372
Pojawia się w:
Przegląd Statystyczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prężność jako wyznacznik pozytywnych i negatywnych konsekwencji doświadczonej sytuacji traumatycznej
Resiliency as a determinant of positive and negative consequences experienced traumatic situation
Autorzy:
Ogińska-Bulik, Nina
Juczyński, Zygfryd
Powiązania:
https://bibliotekanauki.pl/articles/1178601.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Kazimierza Wielkiego w Bydgoszczy
Tematy:
posttraumatic growth
Opis:
Experience a traumatic situation usually entails negative consequences in the psychic dimension, including in the form of Posttraumatic Stress Disorder (PTSD). However, the traumatic experience may also lead to the emergence of positive changes, known as posttraumatic growth (PTG). Among the factors influencing growth after trauma stresses the importance of the individual properties of the man, including resiliency. The aim of the study was to determine the relationship occurring between the resiliency and negative and positive consequences resulting from experiencing a traumatic event. Study involved 80 patients after heart transplantation, implantation by-passes or artificial heart valve. The Assessment of Resiliency Scale (SPP-25) of the own design, and the Polish version of The Impact of Event Scale (IES-R) and The Posttraumatic Growth Inventory (PTGI) were used in the study. A key role in the prevention of symptoms of PTSD plays the properties of resiliency, such as optimistic attitude to life and the ability to mobilize themselves in difficult situations. In turn, the positive changes following trauma are related to openness to new experiences and a sense of humor and tolerance for failure and treatment of life as a challenge. Negative and positive effects experienced life events may co-occur with each other.
Źródło:
Polskie Forum Psychologiczne; 2012, XVII, 2; 395-410
1642-1043
Pojawia się w:
Polskie Forum Psychologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uterine artery Doppler velocimetry in hypertensive disorder of pregnancy in Nigeria
Badanie dopplerowskie przepływu przez tętnice maciczne w nadciśnieniu tętniczym u ciężarnych w Nigerii
Autorzy:
Abidoye, Ibukun A.
Ayoola, Oluwagbemiga O.
Idowu, Bukunmi M.
Aderibigbe, Adeniyi S.
Loto, Olabisi M.
Powiązania:
https://bibliotekanauki.pl/articles/1033311.pdf
Data publikacji:
2017
Wydawca:
Medical Communications
Tematy:
intrauterine growth restriction
Opis:
Aim of the study: To evaluate the value of uterine artery Doppler indices and waveform pattern in predicting fetuses at risk for intrauterine growth restriction in hypertensive disorders of pregnancy. Materials and methods: This was a prospective cross-sectional study including 80 pregnant subjects with hypertensive disorders of pregnancy and two control groups. Uterine artery Doppler sonography was performed in all study participants. Uterine artery Doppler indices across the groups were compared using the analysis of variance (ANOVA) while the presence of prediastolic notch was analyzed with the Chi Square test. Results: For the hypertensive disorders of pregnancy group, resistivity index > 0.66 had a sensitivity of 50.0%, specificity of 69.1% and a positive predictive value of 22.2% for predicting intrauterine growth restriction. The odds ratio was 2.2 with a 95% confidence interval of 0.6–7.8. The presence of prediastolic notching had a sensitivity of 100.0%, specificity of 96.0% and a positive predictive value of 80.0% for predicting intrauterine growth restriction. The odds ratio was 22.7 with a 95% confidence interval of 7.5–68.5. Conclusion: Uterine artery Doppler sonography is useful for predicting fetuses at risk for intrauterine growth restriction in hypertensive disorder of pregnancy. Prediastolic notching is more sensitive and more specific than uterine artery resistivity index in predicting fetuses at risk of intrauterine growth restriction in established hypertensive disorder of pregnancy.
Cel badania: Ocena wartości wskaźników dopplerowskich w tętnicach macicznych oraz kształtu fali przepływu w przewidywaniu wystąpienia wewnątrzmacicznego zahamowania wzrostu płodu w przebiegu nadciśnienia tętniczego u kobiet w ciąży. Materiał i metody: Było to prospektywne badanie przekrojowe obejmujące 80 ciężarnych pacjentek z nadciśnieniem tętniczym oraz 2 grupy kontrolne. U wszystkich uczestniczek wykonano badanie przepływu przez tętnice maciczne z użyciem opcji dopplerowskich. W celu porównania wskaźników dopplerowskich tętnic macicznych we wszystkich grupach zastosowano analizę wariancji (ANOVA), natomiast obecność wcięcia wczesnorozkurczowego analizowano z wykorzystaniem testu chi-kwadrat. Wyniki: W grupie ciężarnych z nadciśnieniem tętniczym wrażliwość wskaźnika oporu naczyniowego >0,66 wynosiła 50%, specyficzność – 69,1%, natomiast dodatnia wartość predykcyjna dla wewnątrzmacicznego zahamowania wzrostu płodu – 22,2%. Iloraz szans wynosił 2,2 przy 95-procentowym przedziale ufności wynoszącym 0,6–7,8. Obecność wcięcia wczesnorozkurczowego wykazywała wrażliwość na poziomie 100%, specyficzność – 96% i dodatnią wartość predykcyjną dla wewnątrzmacicznego zahamowania wzrostu płodu wynoszącą 80%. Iloraz szans wynosił 22,7 przy 95-procentowym przedziale ufności wynoszącym 7,5–68,5. Wnioski: Badanie przepływów w tętnicach macicznych z zastosowaniem opcji dopplerowskich jest użytecznym narzędziem do przewidywania ryzyka wystąpienia wewnątrzmacicznego zahamowania wzrostu płodu w przebiegu nadciśnienia tętniczego w ciąży. Obecność wcięcia wczesnorozkurczowego charakteryzuje się większą wrażliwością i specyficznością w przewidywaniu ryzyka wystąpienia wewnątrzmacicznego zahamowania wzrostu płodu w przebiegu rozpoznanego nadciśnienia tętniczego w ciąży niż wskaźnik oporu naczyniowego w tętnicach macicznych. Artykuł w wersji polskojęzycznej jest dostępny na stronie http://jultrason.pl/index.php/wydawnictwa/volume-17-no-71
Źródło:
Journal of Ultrasonography; 2017, 17, 71; 253-258
2451-070X
Pojawia się w:
Journal of Ultrasonography
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Observation on the growth of Notothenia coriiceps neglecta Nybelin and Notothenia rossi marmorata Fischer in Admiralty Bay (King George Island, South Shetland Islands)
Autorzy:
Linkowski, Tomasz B.
Żukowski, Czesław
Powiązania:
https://bibliotekanauki.pl/articles/2058257.pdf
Data publikacji:
1980
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctic
Notothenia
growth
Źródło:
Polish Polar Research; 1980, 1, 2-3; 155-162
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of plant growth regulators and explant types on induction and growth of callus of Primula veris L.
Wpływ regulatorów wzrostu i rodzaju eksplantatów na indukcję kalusa i wzrost pierwiosnka lekarskiego (Primula veris L.)
Autorzy:
Morozowska, M.
Wesolowska, M.
Glowicka-Woloszyn, R.
Kosinska, A.
Powiązania:
https://bibliotekanauki.pl/articles/72672.pdf
Data publikacji:
2013
Wydawca:
Instytut Włókien Naturalnych i Roślin Zielarskich
Tematy:
plant growth
growth regulator
explant type
callus induction
growth
callus
Primula veris
proliferation
Opis:
Primula veris L. (Primulaceae) is a well-known medicinal herb. The callus induction response of three explant types: roots, cotyledons, and hypocotyls of four-week-old cowslip seedlings were evaluated. The highest statistically different callus induction rate was 93.6% and was obtained from root explants on MS medium supplemented with 0.1 mg/l BA and 5.0 mg/l PIC. Calli also appeared on 83.3% of cotyledon explants on MS medium supplemented with 1.0 mg/l BA and 3.5 mg/l 2,4-D and on 81.0% of root explants on MS medium supplemented with 0.1 mg/l KIN and 2.0 mg/l 2,4-D. These values were not statistically different. The average time required for callus initiation was 4 to 6 weeks, however, it depended on the explants type. The most suitable condition for callus proliferation and growth was MS medium with 0.5 mg/l TDZ and 0.1 mg/l NAA, and with 1.0 mg/l BA and 2.0 mg/l or 3.5 mg/l 2,4-D. No light conditions proved to be more favourable for cowslip calli induction and growth.
Primula veris L. (Primulaceae) to znana roślina lecznicza. Opracowano metodę otrzymywania in vitro tkanki kalusowej z trzech rodzajów eksplantatów: korzeni, liścieni i hypokotyli z czterotygodniowych siewek pierwiosnka lekarskiego. Najwyższy, istotny statystycznie i wynoszący 93,6% indukcji tkanki kalusowej uzyskano z eksplantatów korzeniowych na podłożu Murashige i Skooga (MS) zawierającego 0,1 mg/l BA i 5,0 mg/l PIC. Indukcję kalusa obserwowano także na 83,3% eksplantatów liścieniowych na pożywce MS uzupełnionej 1,0 mg/l BA i 3,5 mg/l 2,4-D oraz na 81,0% eksplantatów korzeniowych na pożywce MS zawierającej 0,1 mg/l KIN i 2,0 mg/l 2,4-D. Średni czas potrzebny do inicjacji kalusa wyniósł 4 do 6 tygodni i zależał od rodzaju eksplantatu. Podłoża MS uzupełnione 0,5 mg/l TDZ i 0,1 mg/l NAA oraz 1,0 mg/l BA i 2,0 mg/l lub 3,5 mg/l 2,4-D okazały się najodpowiedniejszymi dla dalszego rozwoju i wzrostu zregenerowanej tkanki kalusowej. Warunki bez dostępu światła były korzystniejsze dla indukcji i wzrostu tkanki kalusowej pierwiosnka lekarskiego.
Źródło:
Herba Polonica; 2013, 59, 3
0018-0599
Pojawia się w:
Herba Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 2434

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