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  1. 6 Zeszyty Problemowe Postępów Nauk Rolniczych

  2. 3 Acta Physiologiae Plantarum

  3. 2 Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

  4. 1 Acta Agrobotanica

  5. 1 Acta Agrophysica

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  1. 3 Orzepowski W.

  2. 2 Kowalczyk T.

  3. 2 Miler A. T.

  4. 1 Al-Humaid A. R. I.

  5. 1 Arfan M.

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  1. 2 2013

  2. 1 2011

  3. 8 2010

  4. 2 2009

  5. 1 2008

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1

The history of changes in water relations in the catchment basin of River Piwonia

100%
Grzywna A.
Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego
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2013
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tom 10
2

Water relations in beech [Fagus sylvatica L.] seeds and its effect on viability and storability

100%
Pukacka S., Hoffmann S. K., Goslar J., Pukacki P. M., Ratajczak E.
Polish Journal of Natural Sciences. Supplement
|
2003
|
tom 01
3

Effect of pre-treatment and post-treatment of growth hormones [kinetine and abscisic acid] on germination and growth of fodderbeet and seabeet under saline soil conditions

100%
Niazi B. H., Rozema J., Athar M.
Bulletin of the Polish Academy of Sciences. Biological Sciences
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2002
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tom 50
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nr 4
4

Regulation of water relations as a factor in the sustained development of peat ecosystems under land reclamation

84%
Szajda J., Olszta W., Kowalski D.
Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego
|
2004
|
tom 01
5

Water relations and chlorophyll fluorescence responses of two leguminous trees from the Caatinga to different watering regimes

84%
Souza B. D., Meiado M. V., Rodriguez B. M., Santos M. G.
Acta Physiologiae Plantarum
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2010
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tom 32
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nr 2
Leguminous species, Piptadenia moniliformes (Benth.) and Trischidium molle (Benth.) H. E. Ireland, both prevalent in the Caatinga vegetation, were submitted to varying watering regimes under greenhouse conditions. In experiment I, 60-day-old P. moniliformes plants were maintained under suspended irrigation for 12 days. Assessment on day 12 of drought revealed that leaf relative water content decreased to 40% and stomatal conductance and transpiration were also strongly diminished. Apparent electron transport rate (ETR) and photochemical quenching (qP) values were reduced by water deficit treatment compared to controls, while non-photochemical quenching (NPQ) increased; however, the basal values were recovered in moisturized plants when analyzed after 48 h of rewatering. In experiment II, T. molle plants were watered once (1 ×), 3 (3 ×) or 5 times (5 ×) per week, up to day 65 after emergence. Chlorophyll a, chlorophyll b and carotenoid contents were reduced in the 3 × and 5 × watering treatments. Photosystem II maximum efficiency (Fv'/Fm'), ETR and qP values strongly decreased when drainage frequency and NPQ values were increased. Observation verified that chlorophyll fluorescence is a suitable tool for evaluating the developmental characteristics of the arboreal leguminous species studied. Analysis of the data obtained suggest that plant tolerance to the dry climate conditions of the Caatinga ecosystem is directly associated with fast physiological adaptation to water deficit, by accumulating biomass in the root system in detriment to the shoots. The data presented contribute to further understanding the developmental and physiological mechanisms that enable plant adaptation to dry climates and, particularly, to the unique dry environmental conditions of the Caatinga region.
6
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Recent rapid climate changes in Antarctic and their influence on low diversity ecosystems

84%
Chwedorzewska K. J.
Papers on Global Change
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2010
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nr 17
The geographic position, astronomic factors (e.g. the Earth’s maximum distance from the Sun during winter), ice cover and altitude are the main factors affecting the climate of the Antarctic, which is the coldest place on Earth. Parts of Antarctica are facing the most rapid rates of anthropogenic climate change currently seen on the planet. Climate changes are occurring throughout Antarctica, affecting three major groups of environmental variables of considerable biological signifi cance: temperature, water, UV-B radiation. Low diversity ecosystems are expected to be more vulnerable to global changes than high diversity ecosystems.
7
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The vascular flora of a section of the transformed Piwonia River channel – the surrounding ditch on Lake Bikcze (Leczna-Wlodawa Lakeland) – in relation to habitat conditions

84%
Pogorzelec M., Serafin A.
Acta Agrobotanica
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2010
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tom 63
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nr 1
In the period 2007-2009, floristic, habitat and physico- chemical analysis was made of the hydraulically improved surrounding ditch of Lake Bikcze in the Łęczna-Włodawa Lakeland. Hemicryptophytes, with a large proportion of geophytes as well as hydrophytes and helophytes, were the main component of the flora of the studied section of the transformed Piwonia River channel. In terms of historical-geographical classification, spontaneophytes were predominant, and apophytes among them, whereas anthropophytes were poorly represented, which was confirmed by the correspondingly high values of the synanthropization and apophytization indices (> 50%) as well as the low value of the anthropophytization index (approx. 2%). In the aspect of the range of occurrence, Euro-Siberian and cosmopolitan species were predominant, which are classified in terms of the indicator values as hygrophilous plants, neutral to continentality, living in moderately cool or moderately warm climatic conditions, characterized by a wide range of tolerance to the trophic state index and to soil acidity. An analysis of the values of the basic physico-chemical factors of the stagnant water in the surrounding ditch showed variations in the value of pH, electrolytic conductivity and the value of the concentration of organic and ammonium nitrogen as well as of organic phosphorus and phosphates. In spite of the anthropogenic nature of the studied watercourse, the qualitative and quantitative proportions of the flora species indicated the natural state of the flora based on the native vegetation, characteristic of the study area.
8
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Drought stress effects on photosynthesis, chlorophyll fluorescence and water relations in tolerant and susceptible chickpea (Cicer arietinum L.) genotypes

84%
Rahbarian R., Khavari-Nejad R., Ganjeali A., Bagheri A., Najafi F.
Acta Biologica Cracoviensia. Series Botanica
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2011
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tom 53
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nr 1
In order to evaluate morphological and physiological traits related to drought tolerance and to determine the best criteria for screening and identification of drought-tolerant genotypes, we grew two tolerant genotypes (MCC392, MCC877) and two sensitive genotypes (MCC68, MCC448) of chickpea under drought stress (25% field capacity) and control (100% field capacity) conditions and assessed the effect of drought stress on growth, water relations, photosynthesis, chlorophyll fluorescence and chlorophyll content in the seedling, early flowering and podding stages. Drought stress significantly decreased shoot dry weight, CO2 assimilation rate (A), transpiration rate (E), and PSII photochemical efficiency (Fv/Fm) in all genotypes. In the seedling and podding stages, PSII photochemical efficiency was higher in tolerant genotypes than in sensitive genotypes under drought stress. Water use efficiency (WUE) and CO2 assimilation rate were also higher in tolerant than in sensitive genotypes in all investigated stages under drought stress. Our results indicated that water use efficiency, A and Fv/Fm can be useful markers in studies of tolerance to drought stress and in screening adapted cultivars of chickpea under drought stress.
9

Water relations, gas exchange characteristics, and the level of some metabolites in two cultivars of spring wheat under different N regimes

84%
Ashraf M., Arfan M., Ashraf M. Y.
Acta Physiologiae Plantarum
|
2002
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tom 24
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nr 4
10

Water relations and content of pollutants in the waters outflows of two lowland river microcatchments with a different afforestation

84%
Miler A. T., Liberacki D., Plewinski D.
Forestry
|
2001
|
tom 04
11
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Estimation of antioxidant activity of the soils from an orchid reserve

84%
Martyn W., Skwarylo B., Onuch-Amborska J.
Acta Agrophysica
|
2001
|
tom 52
Taking into account high organic matter content in the orchid reserve soils of the Roztoczański National Park, the present authors tried to adapt the method worked out by Rice-Evans and Miller to estimate a soil extract antioxidant activity. This method is used to compare antioxidant activity of complex substances with various organic compounds. The method corroborated the occurrence of antioxydation substances in the tested soil samples.
12

The influence of anthropopressure on water relations in the Wielkopolska Lowland

84%
Kaniecki A.
Geographia Polonica
|
1997
|
tom 68
13

Effects of antitranspirants on water relations and photosynthetic rate of cultivated tropical plant [Polianthes tuberosa L.]

84%
Moftah A. E., Al-Humaid A. R. I.
Polish Journal of Ecology
|
2005
|
tom 53
|
nr 2
The effects of pinolene-base Vapor Gard (VG) emulsion type film and Kaolin, Surround (WP) particle type film antitranspirants on stomatal behavior, water status, carbon assimilation and transpiration rate of tuberose (Polianthes tuberosa L.) were studied. The plants grown under the irrigation regimes of 100, 80 and 60% of total evapotranspiration (ET) values were investigated to select the most suitable antitranspirant for conserving irrigation water, used in cultivation of tuberose plants in arid regions. Severe water stress, decreased the stomatal frequency and conductance (gs), the leaf water potential (Ψw), the osmotic potential (Ψπ ) and the turgor potential (Ψp), the relative water content (RWC), the chlorophyll content (chl), the carbon assimilation rate (A) and the transpiration rate (E). Both types of antitranspirants effectively enhanced the performance and physiological activities of water-stressed plants particularly at the 80% ET, but they did not compensate for the negative effects caused by the 60% ET treatment. However, the particle type, Kaolin, was more effective than the emulsion type, VG, due to its ability to reduce leaf temperature. The increased gs caused by VG and Kaolin sprays were accompanied by increased A suggesting that gs might have a limiting effect on A in water-stressed plants. Water use efficiency (WUE) of Kaolin-sprayed leaves was significantly higher than that of VG sprayed leaves. However, no significant differences between both antitranspirants on E were recorded. Increased WUE, therefore, could be attributed to a higher A by using Kaolin as compared with VG sprays. Thus, particle type antitranspirants are more effective in regulating water status, WUE and the photosynthetic activity of tuberose plants in arid regions.
14

Zrównoważona gospodarka wodna na terenach zurbanizowanych z zastosowaniem systemów zielonych dachów

67%
Szajda-Birnfeld E., Plywaczyk A.
Zeszyty Problemowe Postępów Nauk Rolniczych
|
2010
|
tom 548
|
nr 2
W artykule przeanalizowano stosunki wodne w profilu zielonego dachu w okresie wegetacji roku hydrologicznego 2008. Dzięki możliwości systematycznych pomiarów wilgotności aktualnej w 15 cm warstwie powierzchniowej profilu oraz ich weryfikacji na tle danych meteorologicznych stworzono podstawy do oceny badanego profilu pod kątem możliwości gromadzenia wody opadowej. Wyniki badań dowodzą, iż w okresie wegetacji roku hydrologicznego 2008, przy normalnych warunkach meteorologicznych, zapasy wilgoci [Z] w okresie wczesnej wiosny oraz po nawalnych opadach dochodziły do poziomu pełnej pojemności wodnej (57,8 mm). Podczas okresu pomiarowego obserwowano kształtowanie się zapasów wody na poziomie niższym od pojemności okresu suszy (POS), ale nigdy nie odnotowano ich spadku poniżej punktu trwałego więdnięcia roślin (PTWR).
15
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Water relations during two hydrological years in swampy areas in the Siemianice Forest Experimental Station

67%
Krysztofiak A. T., Miler A. T.
Infrastruktura i Ekologia Terenów Wiejskich
|
2008
|
nr 06
In recent years researchers have focused increasingly on climatic changes taking place in nature (increasing air temperature, decreasing precipitation totals). These imply changes in components of water balances and in practice changes in water relations both on the global and local scale. At present site overdrying is considered to be the biggest threat [Pierzgalski 2007]. The aim of the study is to present water relations in the forest swampy areas in a forest district (the Marianka Forest District) of the Siemianice Forest Experimental Station in hydrological years of 2005 and 2006. The investigations showed that analysed catchments, despite being located in swampy areas, are characterized by periods of water depletion in ditches. In analysed watercourses runoff was recorded from mid-November 2004 to the beginning of June 2005, while in the next hydrological year it was recorded again from mid-November, but this time longer to mid-June 2006. In relation to ground water of the catchment area a predictable relationship was observed of the water table level at the locations of observation wells. The wells located in the top sections of the catchment had water table the deepest below the ground level, while wells in valleys had water tables at the most shallow levels. It may also be stated that wells situated in higher areas (watershed), are characterized by a slightly bigger variation in the ground water table during the year than it was the case with wells located at lower points (in valleys). Both analyzed hydrological years (2005 and 2006) showed a similar pattern of ground water table at individual sites. Moreover, a marked cyclicity was recorded in the elevation of the water table, i.e. water level rising in autumn and lowering in summer months (as a result of changes in plant transpiration). The relationship of ground water levels with different forest sites found in the analyzed catchments confirms the dependence on the site moisture level variant. Water was lying at the most shallow levels in the ash-alder swamp forest site – a marshy site, while it was markedly the deepest in fresh mixed coniferous forest sites – a fresh site type. When analyzing changes in the ground water levels in terms of stand age classes we may clearly observe the seasonal variation and similar patterns of changes. Water lay the most shallow in stands of age classes V and VI. The level was significantly deepest in age class IV. The above dependencies pertained both to the hydrological year 2005 and 2006.
16
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Influence of drought stress on water relations and photosynthetic apparatus in spring barley plants (Hordeum vulgare L.)

67%
Zmuda K.
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
|
2013
|
tom 94
|
nr 3
17

Ocena gospodarki wodnej w profilu glebowym na terenie Arboretum w Pawłowicach

67%
Kowalczyk T., Orzepowski W., Jawecki B., Peczkowski G.
Zeszyty Problemowe Postępów Nauk Rolniczych
|
2010
|
tom 548
|
nr 2
W artykule przedstawiono wyniki badań kształtowania się stosunków wodnych gleby w rejonie Arboretum Uniwersytetu Przyrodniczego w Pawłowicach, dokonując analizy wpływu pokrywy roślinnej na zapasy wilgoci glebowej. Stwierdzono, że profile glebowe zlokalizowane pod okapem drzew w okresie wegetacyjnym charakteryzowały się zapasami wilgoci mniejszymi średnio o 40 mm w porównaniu do profili pokrytych roślinnością niską.
18
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Sea water intrusions to the Lake Gardno

67%
Cieslinski R., Drwal J., Chlost I.
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
|
2009
|
tom 13 part I
Lake Gardno, as the central object in the hydrographic structure, is under the influence of land and sea waters. This results in the situation where the lake together with its direct catchment forms a unique geoecosystem which differs from other inland reservoirs performing the role of local or regional recipients in hydrographic systems, in terms of the quality of water as well as the rate and dynamics of transformations occurring in it. This is an effect of overlapping influences of waters inflowing from the catchment and intrusions of sea waters. During intrusions, waters of higher salinity occur and remain during the greater part of the year in the whole water body of the lake, which is conditioned by the shape of the basin facilitating the penetration of salty waters. It was established that the water coming from intrusions remains for at least several days. There is also evidence from reconnaissance measurements that the retention is longer. The easiness of penetration and long retention period result in the fact that only periodically the desaltation effect of potamic waters leads to an almost complete desaltation of water in the whole basin of the lake Gardno.
19

Kształtowanie się głębokości zalegania zwierciadła wody gruntowej na obszarze Parku Szczytnickiego we Wrocławiu

67%
Kowalczyk T., Orzepowski W., Pokladek R.
Zeszyty Problemowe Postępów Nauk Rolniczych
|
2010
|
tom 548
|
nr 2
W pracy przeanalizowano zmienność głębokości zalegania i amplitudy wahań zwierciadła wody gruntowej na terenie Parku Szczytnickiego we Wrocławiu. Na podstawie pomiarów wykonywanych w latach 1992-2008 oraz danych archiwalnych stwierdzono, że zwierciadło wody gruntowej zalega w parku na poziomie średnio 1,5-3,0 m poniżej powierzchni terenu. Roczne wahania lustra wody gruntowej nie są duże i na większości obszaru parku wynoszą 0,2-0,4 m. Wpływ na to mają: stany wody w rzece Odrze, funkcjonowanie systemu wodnego parku oraz lokalne zróżnicowanie ukształtowania powierzchni. Zwiększenie retencji gruntowej w rejonie Parku Szczytnickiego nie jest wskazane, gdyż poniesienie poziomu zwierciadła wody gruntowej stanowiłoby zagrożenie dla drzewostanu. Należy dążyć do zachowania obecnych stosunków wodnych, a okresowo pojawiające się niedobory wilgoci czynnej warstwy gleby redukować za pomocą nawodnień powierzchniowych.
20

Water relations, gas exchange, nodulation, nitrogen fixation and growth of faba bean (Vicia faba L.) in relation to the drying of surface roots

67%
Magdi A., Siddique K. H. M., Neil T., Jairo P., Veneklaas E., Craig A.
Acta Physiologiae Plantarum
|
2007
|
tom 29
|
nr 1 Suppl.
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