Temat: Oxygen plant - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Aerobic conditions and antioxidative system of Azolla caroliniana Willd. in the presence of Hg in water solution
Autorzy:: Bennicelli, R.P.
Balakhnina, T.I.
Szajnocha, K.
Banach, A.
Powiązania:: https://bibliotekanauki.pl/articles/25032.pdf
Data publikacji:: 2005
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: superoxide dismutase
oxygen availability
toxic substance
aqueous solution
antioxidative system
Azolla caroliniana
aerobic condition
heavy metal
plant
Źródło:: International Agrophysics; 2005, 19, 1
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Agroekologiczne aspekty warunkow tlenowych gleb ornych
Agroecological aspects of aeration status of arable soils.
Autorzy:: Glinski, J
Stepniewski, W.
Stepniewska, Z.
Ostrowski, J.
Wlodarczyk, T.
Brzezinska, M.
Powiązania:: https://bibliotekanauki.pl/articles/1401946.pdf
Data publikacji:: 2000
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: Europa Centralna
agroekologia zob.ekologia rolnicza
ekologia rolnicza
gleby orne
rozwoj roslin
tlen
natlenienie
warunki tlenowe
stres oksydacyjny
woda glebowa
potencjal wodny
Central Europe
agroecology
arable soil
plant development
oxygen
oxygenation
oxygen condition
oxidative stress
soil water
water potential
Opis:: Monografia zawiera 41 rysunków i 18 tabel. Przedstawia ona różne aspekty agroekologicznej roli tlenu w glebach ornych. Jest oparta o przegląd 73 pozycji literatury oraz własne osiągnięcia autorów tej monografii. Problematyka monografii dotyczy: Uwarunkowań stanu natlenienia gleb; Wskaźników natlenienia gleb; Wpływu stanu natlenienia na procesy glebowe i na rośliny; Przestrzennej charakterystyki właściwości oksydoredukcyjnych gleb ornych Polski; Przykładów kompleksowej charakterystyki aeracyjnych właściwości niektórych gleb ornych Europy Centralnej; Nowych aspektów standaryzacji glebowych parametrów natlenienia oraz miejsca stanu aeracji gleb w oksygenologii; Znaczenia wskaźników odporności gleb na redukcję t3oo • t400 dla praktyki rolniczej i melioracyjnej; Propozycji dalszych badań nt. agroekologicznych aspektów natlenienia gleb.
The monograph contains 41 figures and 19 tables. It presents various aspects of agroecological role of oxygen in arable soils.It is based on the review of 73 papers and own experiencesof authors of this monograph. There are discussed: - Conditions of soil oxygenation - Oxygen indices of soil - Influence of soil oxygen status on soil processes and plant - Spatial characteristics of oxydoreduction properties of Polish arable soil - Example of the complex characterisation of oxygen properties of some arable soils in cental Europe A new aspect concerning presentation of oxygenation soil parameters in their standarized form and the place of soil aeration status in oxygenology was introduced. The role of soil resistance to reduction processe expressed by t300 and t400 indicates in agriculture and environment practices was shown. A need of further investigations on the agroecological conditions of soil oxygen conditions was proposed.
Źródło:: Acta Agrophysica; 2000, 32; 1-87
1234-4125
Pojawia się w:: Acta Agrophysica
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Wplyw zlokalizowanego stresu tlenowego w glebie na rozwoj korzeni i czesci nadziemnych kukurydzy [ modelowe badania rizotronowe ]
Effect of localized soil oxygen stress on root and shoot development in maize ( a model rhizotrone study)
Autorzy:: Bennicelli, R P
Powiązania:: https://bibliotekanauki.pl/articles/1628361.pdf
Data publikacji:: 1994
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: agrofizyka
gleby
kukurydza
system korzeniowy
wzrost roslin
badania modelowe
badania rizotronowe
dynamika rozwoju
powietrze glebowe
aeracja
stres tlenowy
agrophysics
soil
maize
root system
plant growth
model research
development dynamics
soil air
aeration
oxygen stress
Opis:: The aim of the study was to test the usefulness of split rhizotrone technique to investigate the effect of localized soil anoxia on root and shoot developement, using maize as a test plant. The experiment was performed in 6 split rhizotrons enabling differentiation of soil aeration status in each half of the rhizotron by blowing nitrogen or air through them. The rhizotrone consists of two parts (each 16.6 dm3 in volume) inclined with an angle 60°. Each part is constructed of 1 mm thick stainless steel plate with a glass inner wall for root observation and has dimensions 84 cm x 40.5 cm x 5.0 cm. The rhizotrons were filled in with a brown loess soil material (Eutric Camhisol) from Ap horizon (from Eli/6wka, near Lublin). Maize seedlings with the roots splitted between the rhizotrone halves (eukivars KLG 2210 and DEA) were used in the experiments. Until the stress period the soil moisture tension of 20-80 kPa provided good water and air conditions. At a stage of 8 leaves three treatments were applied for a period of 7 days; an oxic control (P/P), a localized anoxia with 50% of the roots in nitrogen treated part (P/A), and a complete anoxia (A/A) with gas nitrogen in both parts. During the stress period diurnal elongation rates of primary roots (by marking positions of the tips each day) as well as distribution of two indicators of soil oxygenation status with depth viz. of oxygen diffusion rate (ODR) and of redox potential (Eh) in soil were measured. Shoot elongation rates were monitored with a potentiometer attached to the youngest leaf. Microscopic photographs of cross- sections of the caps and of apical meristems of primary roots at 400 magnification were made to show the changes in their anatomy due to anoxia. Chemical analysis of the shoots was performed after the stress period. For each cultivar the experiment was repeated three times. The investigations performed allowed the following conclusions to be drown out: 1. The split rhizotrone was shown to be a useful technique to study behaviour of the primary maize roots under localized anoxia conditions. 2. The ODR and Eh distribution with depth showed deterioration of oxygenation status (drop of ODR from control values above 100 |µg m-2 s-1 to the level 30 µg m-2 s-1, decrease of Eh from control values above 550 mV to the level, 300 mV) due to replacement of the soil air with gaseous nitrogen. 3. Root elongation rates under anoxic conditions (both under complete - A/A, and localized - A/P anoxia) were on the level of about 50% of the controle (P/P) during first 4 days and decreased practically to zero by the end of the stress period. In turn, the oxic part of the rhizotrone combined with localized anoxia treatment of the same plant (P/A) exhibited compensation effect and was characterized by stimulation of the root elongation rate up to 80%. This effect was especially distinct after 2-5 days of the stress duration and then tended to decrease. 4Distribution of the root mass in depth under anoxic treatments was characterized by concentration of about 80% of the root mass within first 10 cm of the soil. 5.Microscopic photographs of the root tips showed, under anoxic conditions, shorter meristematic zone, smaller number of mitosis, beginning of aerenchyma formation and dying of the cells at a distance of 1 mm from the root cap. 6.The shoots responded to applying anoxia to both rhizotrone parts by 20% reduction of the growth rate. 7.Both root and shoot elongation rates were correlated also with the temperature. 8.Oxygen deficiency in soil resulted in an increase of exchangeable manganese, what was reflected by its increased concentration in the maize shoots.
Źródło:: Acta Agrophysica; 1994, 03; 3-72
1234-4125
Pojawia się w:: Acta Agrophysica
Dostawca treści:: Biblioteka Nauki

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