Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "biochemical activity" wg kryterium: Temat


Tytuł:
Deliberations on zinc - a trace mineral or a toxic element?
Autorzy:
Strachel, R.
Zaborowska, M.
Wyszkowska, J.
Powiązania:
https://bibliotekanauki.pl/articles/961387.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
zinc
trace element
toxic element
sustainable development
toxicity
plant nutrition
microbiological activity
biochemical activity
Opis:
The paper gives a comprehensive insight into the role of zinc in the biosphere. It reviews numerous functions of this metal at various levels of the organisation of ecosystems. An attempt has ben made to assess its importance as a microelement, while not neglecting its toxicity due to excessive accumulation of zinc in the environment. Zinc is a natural component of the Earth's crust, but in many places it has accumulated in amounts near or above the safe levels. Currently, the use of this metal is very broad, and therefore attention should be drawn to possible consequences arising from elevated levels of zinc in the environment. Dispelling controversies surrounding heavy metals is a necessary step for gaining systematic and wider knowledge on these elements. This in turn will create an opportunity for the development of strategies and subsequent actions undertaken by everyone, from individuals to major international industrial corporations, aimed at achieving homeostasis in an environment polluted with heavy metals. Increased levels of zinc can adversely affect microbiological and biochemical processes occurring in the soil and the development of plants, which has a negative impact on the quantity and quality of crops. Therefore, low bioavailability of heavy metals, including zinc, in agricultural land is a key to the stability of ecosystems and food security.
Źródło:
Journal of Elementology; 2016, 21, 2
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antifungal activity of sodium chloride on Saprolegnia diclina and Aphanomyces sp.
Autorzy:
Ali, E H
Powiązania:
https://bibliotekanauki.pl/articles/67745.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
antifungal activity
sodium chloride
Saprolegnia diclina
Aphanomyces
zoosporic fungi
fungi
salinity
morphogenesis
biochemical activity
sporulation
Opis:
Sixteen identified and three unidentified species belonging to six genera of zoosporic fungi were isolated from forty water samples which were collected from different fish and fish hatcheries farms at Abbassa city, Sharkiya governorate, Egypt, using sesame seeds baiting technique at 20±2°C. Saprolegnia and Achlya contributed the broadest spectra of species diversity amongst the other genera of zoosporic fungi. Saprolegnia diclina and Aphanomyces sp. were the most prevalent species of zoosporic fungi. The abundance of zoosporic fungal species in these aquacultures was correlated with some physicochemical characteristics of the water samples. The two dominant species of zoosporic fungi were tested for their tolerance of NaCl solution and its impact on some morphological and metabolic activities of these fungi. Saprolegnia diclina tolerated concentrations of NaCl solution till 12000 μg/ml whereas the maximum resistance of Aphanomyces sp. was 8000 μg/ml. The examined morphological aspects of the two studied fungal species, which included the colony diameters, the vegetative hyphae, zoosporogenesis, zoospores discharge, sexual reproductive structures and gemmae formation, were generally affected depending upon the tested fungal species and the applied dose of NaCl solution. The low treatments of NaCl solution were significantly stimulative compared with the control for protease production by S. diclina but higher doses were significantly suppressive. A significant decline in protease activity at all applications was found when Aphanomyces sp. was treated with NaCl solution. The total free amino acids and total protein content of S. diclina and Aphanomyces sp. mycelia were almost significantly increased relative to untreated controls at the low dose of NaCl solution and they were significantly dropped at the higher concentrations by the two zoosporic fungi.
Źródło:
Acta Mycologica; 2009, 44, 1; 125-138
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in biochemical activity of podzolic soil under willow culture in the second year of treatment with municipal-industrial sewage sludge
Autorzy:
Furczak, J.
Joniec, J.
Powiązania:
https://bibliotekanauki.pl/articles/26038.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
willow culture
municipal-industrial sewage sludge
fertilization
soil
sewage sludge
biochemical activity
podzolic soil
Źródło:
International Agrophysics; 2007, 21, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ osadów ściekowych na aktywność mikrobiologiczną i biochemiczną gleby
Sewage sludge influence on microbiological and biochemical soil activity
Autorzy:
Napora, A
Grobelak, A.
Powiązania:
https://bibliotekanauki.pl/articles/297019.pdf
Data publikacji:
2014
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
osady ściekowe
aktywność mikrobiologiczna gleby
aktywność biochemiczna gleby
sewage sludge
microbial soil activity
biochemical soil activity
Opis:
Niniejsza publikacja zawiera podsumowanie aktualnego stanu wiedzy na temat kształtowania się liczebności wybranych grup fizjologicznych drobnoustrojów (bakterii celulolitycznych, proteolitycznych, nitryfikacyjnych czy grzybów) i zmian mikrobiocenotycznych w składzie mikroorganizmów glebowych oraz procesów mikrobiologicznych zachodzących w środowisku glebowym i w ryzosferze roślin po zastosowaniu osadów ściekowych jako nawozu. Omówiono tu zarówno korzystny, jak i negatywny wpływ osadów ściekowych na skład chemiczny gleby oraz na aktywność mikroorganizmów glebowych. Przytoczone publikacje potwierdziły, iż do nawożenia gleby najkorzystniejsze są osady pochodzące z przemysłu rolno-spożywczego, ponieważ stopień ich zanieczyszczenia substancjami toksycznymi jest niewielki. Zastosowanie osadów wpłynęło na zwiększenie zawartości węgla organicznego, azotu ogólnego oraz przyswajalnych form fosforu i potasu. Skutkiem tego były wyższa aktywność biologiczna gleby i wzrost liczebności bakterii (oligo-, makrotroficznych), promieniowców i grzybów (nitkowatych, celulolitycznych) oraz wzrost aktywności procesów mikrobiologicznych, takich jak: amonifikacja, nitryfikacja i denitryfikacja. W pierwszych tygodniach nawożenia gleby zaobserwowano niekorzystne zmiany w strukturze mikroorganizmów, pochodzących z zastosowanych osadów, w skład których weszły patogenne wirusy, bakterie (Salmonella, Shigella) oraz grzyby (Aspergillus, Fusarium, Penicillium). Wraz z upływem czasu mikroorganizmy wprowadzone z odpadami zostały wyparte przez rodzime mikroorganizmy glebowe. Wyniki stymulującego wpływu osadów utrzymały się przez dłuższy czas, najsilniej zaobserwowano je dla gleby w warstwie aplikacji osadów ściekowych.
This publication summarizes the current state of knowledge on the development of the selected microbial groups: (cellulolytic, proteolytic, nitryfication bacteria and fungi) and microbiocenotic changes in the composition of the soil microflora and microbial processes occurring in the soil environment and rhizosphere plants after the application of sewage sludge as fertilizer. Moreover, both the positive and the negative impacts of sewage sludge on chemical composition of soil and soil microflora activity were discussed. Cited publications have confirmed that as a soil fertilizer, the most favorable are the sewage sludge from agro-food industries, mainly because the degree of pollutions and toxic substances is small. Application of the sewage sludge has increased organic carbon content, total nitrogen and bioavailable forms of phosphorus and potassium. One of the most common result was a higher biological activity of the soil and an increase in the number of bacteria (oligo-, macrotrophic), thermophilic Actinomycetes and fungi (filamentous, celluolytic) and an increase in the activity of microbial processes such as: ammonification, nitrification and denitrification. During the first period of fertilizing the soil some adverse changes in the structure of the endogenous microflora were noted, which entered the pathogenic viruses, bacteria (Salmonella, Shigella), and fungi (Aspergillus, Fusarium, Penicillium) coming from the sewage sludge. With the passage of time some egzogenic microflora was displaced by indigenous microorganisms. The results of the stimulating effects of sewage sludge remained for a long time and were mostly observed in soil at the application level.
Źródło:
Inżynieria i Ochrona Środowiska; 2014, 17, 4; 619-630
1505-3695
2391-7253
Pojawia się w:
Inżynieria i Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Leaf litterfall decomposition of pedunculate (Quercus robur L.) and sessile (Q. petraea [Matt.] Liebl.) oaks and their hybrids and its impact on soil microbiota
Autorzy:
Jurkšienė, Girmantė
Janušauskaitė, Dalia
Armolaitis, Kęstutis
Baliuckas, Virgilijus
Powiązania:
https://bibliotekanauki.pl/articles/956787.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
biochemical properties
enzymatic activity
metabolic activity
microorganisms
microbial communities
Opis:
Trakas Forest is the only natural habitat of sessile oak in Lithuania. Sessile oak stand here is growing about 60–70 km from the nearest natural sessile oak stands in Poland. The purpose of this study was to determine whether autumn leaf litterfall of pedunculate and sessile oaks and their hybrids have different biochemical composition and decomposition rate and, consequently, different impacts on microbial condition of rhizosphere. For this purpose in autumn leaf litterfall C, N, P, K, Ca, Mg, lignin, ash, fat, crude fibre and water-soluble carbohydrates contents and stocks, lignin/N, lignin/P, C/N, C/P, N/P ratios, the decomposition rate and CO2 emissions were determined. In rhizosphere of studied oak species N, C concentration, pHH2O, C/N ratio, and dehydrogenase, urease, phosphatase, bacteria and micromycetes amount were estimated as well. The litterfall of pedunculate oak was distinguished by a higher content of lignin, higher lignin/N ratio, lower decay rate and lower carbon release, which determines decreased activity of micromycetes in the rhizosphere. Metabolic activity of microorganisms differed insignificantly among tree species rhizospheres. However, the potential for the use of carbon compound substrates and biodiversity index have a tendency to be higher in the soil under sessile oak. Lower decomposition rate of leaf litterfall and organic compounds in the rhizosphere under pedunculate oak allowed to suppose that the conditions for natural regeneration were more suitable in stands where sessile and hybrid oaks dominate.
Źródło:
Dendrobiology; 2017, 78; 51-62
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hepatoprotective and antioxidant activity of Lannea coromandelica Linn. on thioacetamide induced hepatotoxicity in rats
Autorzy:
Srinivasa Rao, V.
Wilkin Einstein, J.
Das, K.
Powiązania:
https://bibliotekanauki.pl/articles/11218.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
hepatoprotective activity
antioxidant activity
biochemical parameter
Lannea coromandelica
thioacetamide
hepatotoxicity
rat
Opis:
Hepatoprotective and antioxidant activity of Lannea coromandelica bark extract (LCBE) was investigated on thioacetamide induced hepatotoxicity in rats. Hepatotoxicity was induced by thioacetamide (TAA) administration (100 mg/kg. s.c). LCBE at different doses (400 and 200 mg/kg) were administered orally to male wistar rats. Thioacetamide caused elevation of serum concentration of AST, ALT, ALP, serum bilirubin and also reduced serum concentration of total protein, albumin, sodium, potassium in animals as compared to control (p < 0.05) but LCBE treated rats showed maximum reduction of AST [(138±5.1) IU/L], ALT [(71 ±2.7) IU/L], ALP [(140 ±1.9) IU/L] with the high dose (400 mg/kg bw) of combined aqueous and alcoholic bark extract. Whereas, serum bilurubin, cholesterol, sugar and LDH content were varied with the treatments but showed higher with the only ethanolic extract at dose of 400 mg/kg. The IC50 value was observed as (83.28 ±2.12) μg/mL, for DPPH radical scavenging activity. Result concluded that ethanolic extract and combined aqueous and alcoholic bark extract of L. coromandelica showed a potential hepatoprotective and antioxidant activities might be due to the presence of phenolic groups, terpenoids and alkaloids.
Źródło:
International Letters of Natural Sciences; 2014, 03
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of thyme and tea tree oils on morphology and metabolism of Candida albicans
Autorzy:
Rajkowska, Katarzyna
Kunicka-Styczyńska, Alina
Maroszyńska, Marta
Dąbrowska, Mariola
Powiązania:
https://bibliotekanauki.pl/articles/1039294.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Candida albicans
essential oils
morphology
metabolism
enzymatic activity
biochemical properties
Opis:
Members of Candida species cause significant problems in medicine and in many industrial branches also. In order to prevent from Candida sp. development, essential oils are more and more frequently applied as natural, non-toxic, non-pollutive and biodegradable agents with a broad spectrum of antimicrobial activity. The aim of the research was to determine changes in morphology and metabolic properties of Candida albicans in the presence of thyme and tea tree oils. Changes of enzymatic activity of isolates were observed in the presence of both tested essential oils, and they were primarily associated with loss or decrease of activity of all enzymes detected for control. Furthermore, only for 3 out of 11 isolates additional activity of N-acetyl-β-glucosaminidase, α-mannosidase, α-fucosidase and trypsin was detected. Vivid changes in biochemical profiles were found after treatment with tea tree oil and they were related to loss of ability to assimilate d-xylose, d-sorbitol and d-trehalose. The main differences in morphology of isolates compared to the control strain concerned formation of pseudohyphae structures. Both examined essential oils caused changes in cell and colony morphology, as well as in the metabolism of Candida albicans. However, the extent of differences depends on the type and concentration of an essential oil. The most important finding is the broad spectrum of changes in yeast enzymatic profiles induced by thyme and tea tree oils. It can be supposed that these changes, together with loss of ability to assimilate saccharides could significantly impact Candida albicans pathogenicity.
Źródło:
Acta Biochimica Polonica; 2014, 61, 2; 305-310
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physico-chemical and biological activity of hawthorn (Crataegus spp. L.) fruits in Turkey
Fizykochemiczna i biologiczna aktywność owoców głogu (Crataegus spp. L.) w Turcji
Autorzy:
Ercisli, S.
Yanar, M.
Sengul, M.
Yildiz, H.
Topdas, E.F.
Taskin, T.
Zengin, Y.
Yilmaz, K.U.
Powiązania:
https://bibliotekanauki.pl/articles/11543262.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
physicochemical activity
biological activity
hawthorn
Crataegus
biochemical diversity
genotypic variation
fruit
fruit mass
anthocyanin
Turkey
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2015, 14, 1; 83-93
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Raw Extract of Clitoria ternatea L. on Sexual Stimulate Test of Female Genital Tract in Rat
Autorzy:
Chandru, G.
Jayakumar, Kaliyamoorthy
Girija, M.
Powiązania:
https://bibliotekanauki.pl/articles/1178251.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Clitoria ternatea
Estrogenic activity
Female rat
Hematological and Biochemical profile
Reproductive stimuli
Opis:
Clitoria ternatea have no toxicity as per the earlier reports of sexual stimulate effect of traditional medicine used by the tribal and fishery village women’s of Point Calimere Wildlife Sanctuary, Nagapattinam district, Southern India. In the present study, reproductive stimuli and fertility effect of raw extract of Clitoria ternatea (RECT) was administered orally at the doses of 250 mg/kg body weight of female rat for a period of 30 days and normal clean water (Normal slain 0.9%, 0.5 ml/kg per day) to control groups. There were no significance changes in the body weight of RECT treated group when compared to control group. RECT treated female rat group vigorously mated with male when allowed on estrus phase of female rat observed in vaginal smears. The serum estradiol level was increased (P < 0.05) significantly. Administered the RECT showed no significant change in the biochemical parameters and hematological parameters of RBC, WBC count when compared to control group. It is concluded that the test of RECT could be due to its reproductive effect in female rat.
Źródło:
World Scientific News; 2018, 91; 86-98
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biological and biochemical properties in evaluation of forest soil quality
Autorzy:
Blonska, E.
Lasota, J.
Powiązania:
https://bibliotekanauki.pl/articles/38711.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
biological property
biochemical property
forest soil
soil quality
earthworm
enzyme activity
Opis:
The aim of this study was to assess the possibility of using biological and biochemical parameters in the evaluation of forest soil quality and changes caused by land use. The study attempted to determine a relationship between the enzymatic activity of soil, the number of earthworms and soil physico-chemical properties. The study was carried out in central Poland in adjoining Forest Districts (Przedbórz and Smardzewice). In soil samples taken from 12 research plots, basic physico-chemical properties, enzyme activity (dehydrogenase, urease) and density and biomass of earthworms were examined. Enzyme activity showed a large diversity within the forest site types studied. The correlations between the activity of the enzymes studied and C/N ratio indicated considerable importance of these enzymes in metabolism of essential elements of organic matter of forest soils. Urease and dehydrogenase activity and earthworm number showed susceptibility to soil pH, which confirmed relationships between enzyme activity and abundance of earthworms and soil pH in H2O and KCl.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2014, 56, 1
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rapid evaluation of germinability of primed China aster (Callistephus chinensis Ness.) seeds with physiological and biochemical markers
Autorzy:
Badek, B.
Romanowska-Duda, Z.
Grzesik, M.
van Duijn, B.
Powiązania:
https://bibliotekanauki.pl/articles/2057.pdf
Data publikacji:
2014
Wydawca:
Instytut Ogrodnictwa
Tematy:
enzyme activity
electrolyte leakage
seed germination
China aster
Callistephus chinensis
biochemical marker
physiological marker
Źródło:
Journal of Horticultural Research; 2014, 22, 2
2300-5009
Pojawia się w:
Journal of Horticultural Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of tillage systems on chemical, biochemical and biological composition of soil
Autorzy:
Romaneckas, K.
Avizienyte, D.
Boguzas, V.
Sarauskis, E.
Jasinskas, A.
Marks, M.
Powiązania:
https://bibliotekanauki.pl/articles/15874.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
tillage system
chemical composition
biochemical composition
biological composition
soil
earthworm
enzyme activity
soil pH
phosphorus
potassium
Opis:
The influence of reduced tillage (RT) on the biochemical properties of soil and crops has been studied thoroughly worldwide. In contrast, we lack regular results on long-term (more than 20 years) RT and especially no-till (NT) impact on the composition of soil and main crops in semi-humid subarctic climate of the Baltic States. For this reason, investigations were carried out at the Research Station of Aleksandras Stulginskis University, Lithuania, in 2009–2012. The aim was to investigate the influence of RT and NT on soil pH, phosphorus (P) and potassium (K) concentrations, enzymatic activity and abundance of earthworms. This study comprised soils which were conventionally (CP) and shallowly (SP) ploughed, deeply chiselled (DC), shallowly disked (SC) and not tilled (NT). Primary tillage systems did not have significant impact on the soil pH or its P and K content but initiated the separation of soil layers into an upper one (0–15 cm), with a higher P and K status (55.5% P and 59.0% K of the total content), and a bottom one (15–25 cm), with lower concentrations of the elements (44.5 and 41.0%). Non-inversion tillage systems and NT raised the activity of soil enzymes such as saccharase by 32.2 to 60.8% and urease by 1.6- to 3.1-fold. The most marked rise in enzyme activity occurred in SC and NT soil. RT systems lead to an increase in the number and biomass of earthworms in the soil under wheat but the highest rise of the earthworm number and biomass was observed in NT plots, where the average count of earthworms doubled and their biomass increased by 3.7-fold compared with CP. In general, NT was the most efficient system in terms of the enrichment of soil biochemical properties.
Źródło:
Journal of Elementology; 2016, 21, 2
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microbiological and biochemical properties of soil depending on adenine and azotobacterin applied
Mikrobiologiczne i biochemiczne wlasciwosci gleby ksztaltowane przez adenine i azotobakteryne
Autorzy:
Wyszkowska, J
Kucharski, M.
Kucharski, J.
Powiązania:
https://bibliotekanauki.pl/articles/13831.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
soil microorganism
urea fertility
microbiological property
enzyme activity
adenine
microorganism number
soil
azotobacterin
soil enzyme
biochemical property
Opis:
The aim of the study was to determine how adenine affected biological proprieties of soil. The performance of this precursor cytokinine was tested in a pot trial. The question posed was whether it was possible to improve efficacy of adenine by enlarging populations of bacteria from Azotobacter species in soil. The experiment was carried out on proper brown soil, formed from dust clay sand with pHKCl 6,9. Pots were filled with 3.2 kg of soil. The investigations were performed in two series: with and without addition Azotobacterin to soil. Tow rates of nitrogen fertilisation: 0 and 50 mg N·kg-1 of soil were applied in test. Adenine was applied in the following quantities: 0; 5; 10 and 15 mg·kg-1 of soil. Radish, 6 plants per pot, was the test plant. It was confirmed that the adenine had a significant effect on growth and development of radish. It positively affected microbiological and the biochemical proprieties of soil. The counts of total oligotrophic bacteria, oligotrophic sporulation bacteria, total copiotrophic bacteria, copiotrophic sporulation bacteria, ammonifying bacteria, immobilizing bacteria, celulolytic bacteria, Azotobacter sp., Artrobacter sp. and Pseudomonas sp. were increased, and the number of fungi diminished. Adenine also stimulated activities of dehydrogenase, urease and alkaline phosphatase, although it depressed the activity of acid phosphatase. The inoculation with bacteria from Azotobacter species applied to soil failed to improve efficacy of adenine. Nevertheless, it increased counts of these bacteria, which had a beneficial influence on the development of oligotrophic bacteria, immobilizing bacteria, celulolytic bacteria and actinomyces, while negatively affecting fungi, ammonifying bacteria and Arthrobacter.
Celem badań było określenie wpływu adeniny na biologiczne właściwości gleby. Działanie tego prekursora cytokinin testowano w doświadczeniu wazonowym. Sprawdzano możliwość wzmocnienia efektywności adeniny przez zwiększenie w glebie puli bakterii z rodzaju Azotobacter. Badania wykonano w próbkach gleby brunatnej właściwej, wytworzonej z piasku gliniastego pylastego o pHKCl 6,9. W wazonach umieszczono po 3,2 kg gleby. Badania obejmowały dwie serie: bez i z dodatkiem do gleby szczepionki Azotobakteryny. W doświadczeniu zastosowano zróżnicowane nawożenie azotem: 0 i 50 mg N·kg-1 gleby. Adeninę stosowano w następującej ilości: 0; 5; 10 i 15 mg·kg-1 gleby. Rośliną doświadczalną była rzodkiewka - 6 roślin w wazonie. Stwierdzono, że adenina istotnie wpływała na wzrost i rozwój rzodkiewki. Korzystnie oddziaływała na mikrobiologiczne i biochemiczne właściwości gleby. Zwiększała liczebność bakterii: oligotroficznych ogółem, oligotroficznych przetrwalnikujących, kopiotroficznych ogółem, kopiotroficznych przetrwalnikujących, amonifikacyjnych, immobilizujących azot, celulolitycznych, Azotobacter sp., Arthrobacter sp., Pseudomonas sp. oraz promieniowców, a zmniejszała liczbę grzybów. Stymulowała także aktywność dehydrogenaz, ureazy i fosfatazy alkalicznej, natomiast hamowała aktywność fosfatazy kwaśnej. Zastosowana szczepionka złożona z bakterii z rodzaju Azotobacter nie poprawiała efektywności adeniny. Zwiększała jednak liczbę tych bakterii w glebie, co wpłynęło korzystnie na rozwój bakterii oligotroficznych, immobilizujących azot, celulolitycznych oraz promieniowców, natomiast negatywnie - na grzyby oraz bakterie amonifikacyjne i bakterie z rodzaju Arthrobacter.
Źródło:
Journal of Elementology; 2008, 13, 1
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of laser irradiation on the biochemical changes in seeds and the accumulation of dry matter in the faba bean
Autorzy:
Podlesny, J.
Powiązania:
https://bibliotekanauki.pl/articles/24250.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
biochemical change
development
dry matter
laser irradiation
yield
laser light
enzyme activity
biostimulation
faba bean
accumulation
germination
seed
Źródło:
International Agrophysics; 2002, 16, 3
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The evaluation of biodiversity in some indigenous Indian jujube (Zizyphus mauritiana) germplasm through physico-chemical analysis
Autorzy:
Anjum, M.A.
Rauf, A.
Bashir, M.A.
Ahmad, R.
Powiązania:
https://bibliotekanauki.pl/articles/11858870.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
Pakistan
jujube tree
Ziziphus mauritiana
indigenous plant
cultivated plant
morphological trait
biochemical trait
physicochemical activity
antioxidant activity
germplasm
biodiversity
plant breeding
breeding programme
breeding research
plant research
Opis:
Indian jujube (Zizyphus mauritiana Lamk.) is mostly cultivated in tropical and sub-tropical regions of the world. Many native and exotic jujube cultivars are grown for fruit production in Pakistan. However, little research work has been conducted on various aspects of jujube i.e. morphological and biochemical characterization of available germplasm. Therefore, fruits of thirteen genotypes were collected to study the biodiversity through physico-chemical analysis during the years 2015 and 2016. The aim of the present study was to investigate the relationship among various physico-chemical attributes of the jujube through Pearson’s correlation that may have greater importance for breeders during the selection of desirable genotype. The cultivar Foladi had the maximum fruit weight (30.49 g), pulp weight (28.42 g) and fruit diameter (36.75 mm) among all the cultivars. The maximum fruit length was recorded in Umran-13 (45.16 mm), while the maximum seed weight (2.70 g) was found in Dilbahar. Khobani had the maximum TSS (14.92 ºBrix). The highest level of acidity (0.74%) was recorded in Gorh. Akasha had highest vitamin C content (72.53 mg 100 mL–1 juice). The cultivars Sadqia, Umran-13, Mehmood wali, Yazman local and Gorh were much sweeter due to the maximum total sugars content (9.74–10.09%). The maximum antioxidant capacity was measured in Mahmood wali (616.13 mM Trolox 100 mL–1), Pak white (615.02 mM Trolox 100 mL–1) and Seedless (600.46 mM Trolox 100 mL–1), while antioxidant activity was significantly higher in Sadqia (40.604%). The maximum amount of total phenolic content was determined in Umran-13 and Sadqia (243.06 and 239.25 µg GAE mL–1 juice, respectively). The highly significant correlation (0.99) was observed between the fruit weight and pulp weight. Antioxidant activity and total phenolic content were also strongly correlated (0.70). Principal component analysis was made to determine the relationship among the genotypes and their variables. Dendrogram constructed on the basis of morphological attributes, divided 13 genotypes into four main clusters. Among the cultivars, Khobani and Mehmood wali share the maximum similarity (78%). Biochemical characteristics also divided the genotypes into three main clusters. The cultivars Pak white and Seedless had the maximum similarity (75%) among all the cultivars.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 4; 39-52
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies