Full-text resources of CEJSH and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl

Results found: 3

first rewind previous Page / 1 next fast forward last

Search results

Search:
in the keywords:  electrolyte leakage
help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1
Publication available in full text mode
Content available

Allelopathic effect of goosefoot on germination and early stage growth of triticale and radish

100%
Lipniak K., Kliszcz A.
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
|
2020
110-128
EN
The aim of this study was to investigate the effect of aqueous extracts from Chenopodium album L. on germination and early stages of triticale grains (×Triticosecale Wittm. ex A.Camus) and radish seeds (Raphanus sativus L.). Germination indexes, fresh and dry mass, water content and electrolyte leakage were measured. Studies revealed the different germination capacity of triticale grains and radish seeds, where increased concentrations of allelopathins in aqueous C. album extracts significantly inhibited seedling growth for both species. The extracts had an inhibitory effect on the growth of seedling fresh mass. An increase in dry mass of radish seedlings was demonstrated for each of the extracts and, for triticale seedlings, only at concentrations of 0.5% and 1.5%. Water content in triticale and radish seedlings varied depending on the concentration of allelopathins in the extract. With increasing concentrations of C. album extract, regardless of seedling type, a statistically significant increase in electrolyte leakage was observed.
2
Publication available in full text mode
Content available

The influence of solar radiation on selected physiological processes of mosses in karst conditions of the spring niches of the Ojców National Park (Southern Poland)

75%
Sołtys-Lelek A., Caputa Z.
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
|
2021
|
vol. 6
PL
Dostępność światła jest jednym z najważniejszych czynników środowiskowych wpływających na różnorodność florystyczną nisz źródliskowych, zwłaszcza w specyficznych warunkach głębokich, krasowych dolin, występujących w Ojcowskim Parku Narodowym (południowa Polska). Celem niniejszej pracy było zbadanie wpływu promieniowania słonecznego, docierającego do nisz źródliskowych, na wybrane parametry fizjologiczne mchów źródliskowych: Cratoneuron filicinum (Hedw.) Spruce (krenofit obligatoryjny) i Brachythecium rivulare Schimp. (krenofit fakultatywny). Do zbioru materiału roślinnego wytypowano 5 krasowych nisz źródliskowych (4 w dolinie Prądnika, 1 w dolinie Sąspowskiej), w których występowały jednocześnie obydwa gatunki mchów. W słoneczne dni dokonano pomiarów promieniowania całkowitego, odbitego oraz salda promieniowania w pełnym zakresie widma nad roślinnością. Temperaturę pomierzono dla powietrza, wody oraz na powierzchni i wewnątrz roślin. Zebrany materiał biologiczny poddano analizom laboratoryjnym. Świeża masa gametofitów była istotnie największa u roślin rosnących na stanowisku 5, a najmniejsza u mchów ze stanowisk 1, 2. Sucha masa zmieniała się w zależności od gatunku i siedliska. Procentowa zawartość wody u B. rivulare była największa dla okazów ze stanowiska 4, a u C. filicinum ze stanowiska 5. Istotnie najmniejsze wartości tego parametru stwierdzono dla roślin rosnących na stanowisku 2. Wypływ elektrolitów z komórek mchów był specyficzny i zależał od gatunku. Największą destabilizację błon komórkowych wykazano u roślin zebranych ze stanowisk 1 i 2. Fluorescencja chlorofilu a zmieniała się w zależności od gatunku mchu i źródliska. Niniejsza praca prezentująca pilotażowe wyniki, stanowi niejako wstęp do szerzej zakrojonych badań w tym zakresie.
EN
The availability of light is one of the most important environmental factors influencing the floristic diversity of spring niches, especially in the specific conditions of deep, karst valleys occurring in the Ojców National Park (southern Poland). The aim of this study was to investigate the influence of solar radiation reaching the karst spring niches, on selected physiological parameters of the spring mosses: Cratoneuron filicinum (Hedw.) Spruce (obligatory krenophyte) and Brachythecium rivulare Schimp. (facultative krenophyte). The five karst spring niches (4 in the Prądnik Valley, 1 in the Sąspowska Valley) were selected for the plant material collection, in which two of the moss species tested occurred simultaneously. On sunny days, measurements of total and reflected radiation as well as the radiation balance in the full spectrum range over the vegetation were made. The temperature was measured for air, water, and on the surface and inside the plants. The collected biological material was subjected to laboratory analysis. Fresh mass of moss gametophytes was significantly the highest from plants growing on stand 5 (intermediate values of light and temperature parameters), and the lowest from mosses on stands 1 and 2 (including lowest air temperatures). Dry mass varied depending on the species and stand. The percentage of water in B. rivulare was highest in plants from  stand 4 (highest air and water temperature), and in C. filicinum from stand 5. Significantly the lowest values of this parameter were found for plants growing in stand 2 (lowest temperature of water). The electrolytes leakage from moss cells was specific and depended on the species. The greatest destabilisation of cell membranes was demonstrated in plants harvested from stands 1 and 2, where it was the coldest. The fluorescence of chlorophyll a varied depending on the moss species and the habitat of spring niches. This paper, presenting of preliminary results, is a kind of introduction to wider research in this topic
3
Publication available in full text mode
Content available

Allelopathic effects of Stellaria media (L.) Vill. on germination and early stages of growth of Raphanus sativus var. radicula

75%
Zandi P., Barabasz-Krasny B., Stachurska-Swakoń A., Puła J., Możdżeń K.
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
|
2018
EN
Influence of aqueous extracts of aboveground organs of common crop weeds Stellaria media on germination and seedlings growth of radish (Raphanus sativus L. var. radicula Pers.) was studied. Three different cultivars of radish (i.e. ‘Rowa’, ‘Krakowianka’, and ‘Półdługa’) were used to investigate if Stellaria media could produce allelopathins and if the impact of allelopathins differs between cultivars. The influence of allelopathins in various form of extracts was checked, i.e. decoction, infusion, and macerate, as the impact on germination rate, seedling growth (length and mass), and electrolyte leakage. Compared to the control group (distilled water used) the germination rate of radish seeds was lower, independently of the type of S. media extracts used. The growth of seedlings differed between cultivars and form of extract. It was noticed the inhibition of seedling growth for ‘Półdługa’ cultivar independently of extract form. The growth of two other cultivars was stimulated by the infusion, and slightly inhibited by the decoction and macerate. The extracts reduced the outflow of electrolytes through the cell membranes of radish seedlings of all but one the analysed radish cultivars. The exception was the macerate, which in the ‘Rowa’ cultivar caused the increase of the electrolyte leakage.
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.