Wyniki wyszukiwania - AGRO

1

Superoxide dismutase activity in salt stressed wheat seedlings

100%

Eyidogan F. I., Oktem H. A., Yucel M.

Acta Physiologiae Plantarum

|

2003

|

tom 25

|

nr 3

2

PCC-associated events induced in seedeling roots of V.faba

100%

Kalkowska K., Karolczak K., Kowalski A., Kramek E., Parada D., Piotrowski K., Piwonska M., Sikora K.

Polish Journal of Natural Sciences. Supplement

|

2003

|

tom 01

3

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Effect of root-zone glyphosate exposure on growth and anthocyanins content of radish seedlings

88%

Grzesiuk A., Debski H., Okninska K., Koczkodaj D., Szwed M., Horbowicz M.

Acta Scientiarum Polonorum. Hortorum Cultus

|

2018

|

tom 17

|

nr 2

The response of radish seedlings (Raphanus sativus L. subvar. radicula Pers.), as non-target plant, to various doses of glyphosate applied to root zone was studied in the experiment. The glyphosate was used at concentrations 0.1, 0.5 and 2.0 mM, and the study was conducted on seedlings grown in hydroponic cultures in controlled light and temperature conditions. In the experiment, roots of seedlings were exposed to glyphosate for 4, 7 or 14 days. In order to evaluate the effect of glyphosate, length and biomass of the seedling organs, as well as contents of anthocyanins in hypocotyls and cotyledons have been measured. Glyphosate applied to root zone had considerably higher impact on the growth of the primary root than shoot of radish seedlings. Short-term exposure to glyphosate led to the stimulation of growth and biomass organs of the radish seedling, but such treatment had no effect on the contents of anthocyanins in the cotyledons and hypocotyl. However, after longer exposure to glyphosate a decrease of anthocyanins content in the hypocotyl and its increase in the cotyledons was noted.

4

Evaluation of root system of seedling of black cherry [Padus serotina L.] depending on seed quality

88%

Bieniek A., Kawecki Z.

Acta Scientiarum Polonorum. Hortorum Cultus

|

2005

|

tom 04

|

nr 1

The assessment of black cherry seedlings root system was carried out at the Didactic-Experimental Establishment of the UWM in Olsztyn in September 2002. The seeds from which the examined seedlings were obtained had been sown into the ground on 2 October 2001. The following seeds were used for the experiment: fresh, sown into the ground immediately after obtaining them from fruit, partly dried seeds and seed sown a month later than in the preceding case as well as physiologically immature seeds and whole fresh fruit. The root systems of seedlings obtained from seeds stored for 1 year and 2 years in open and closed “Twist” type jars at room temperature and in a freezer were also assessed. The largest proportions of seedlings were obtained from seeds stored for 1 year and 2 years in a freezer. The lowest proportions of seedlings were obtained from seeds sown a month later and from whole fresh fruit. In this experiment the most favorable development of the root system was observed in case of seedlings from seeds stored for 2 years in an open jar. The time from picking to sowing of seeds was of little importance. The seedlings from partly dried seeds and later sowing were characterized by the lowest mass of the root system.

5

The effect of fungicides on mycorrhized and non-mycorrhized seedlings of Scots pine. II. The formation of mycorrhizae

88%

Aleksandrowicz-Trzcinska M.

Folia Forestalia Polonica. Series A . Forestry

|

2000

|

tom 42

6

Characterization of dual specificity protein kinase from maize seedlings

88%

Trojanek J. B., Klimecka M. M., Fraser A., Dobrowolska G., Muszynska G.

Acta Biochimica Polonica

|

2004

|

tom 51

|

nr 3

A protein kinase of 57 kDa, able to phosphorylate tyrosine in synthetic substrates pol(Glu4,Tyr1) and a fragment of Src tyrosine kinase, was isolated and partly purified from maize seedlings (Zea mays). The protein kinase was able to phosphorylate exogenous proteins: enolase, caseins, histones and myelin basic protein. Amino acid analysis of phosphorylated casein and enolase, as well as of phosphorylated endogenous proteins, showed that both Tyr and Ser residues were phosphorylated. Phosphotyrosine was also immunodetected in the 57 kDa protein fraction. In the protein fraction there are present 57 kDa protein kinase and enolase. This co-purification suggests that enolase can be an endogenous substrate of the kinase. The two proteins could be resolved by two-dimensional electrophoresis. Specific inhibitors of typical protein-tyrosine kinases had essentially no effect on the activity of the maize enzyme. Staurosporine, a nonspecific inhibitor of protein kinases, effectively inhibited the 57 kDa protein kinase. Also, poly L-lysine and heparin inhibited tyrosine phosphorylation by 57 kDa maize protein kinase. The substrate and inhibitor specificities of the 57 kDa maize protein kinase phosphorylating tyrosine indicate that it is a novel plant dual-specificity protein kinase.

7

Occurrence of Phytophthora cactorum on tree seedlings with damping-off symptoms in some forest nurseries in South of Poland

88%

Stepniewska H.

Phytopathologia Polonica

|

2003

|

tom 29

8

Polysomaty in sugar-beet [Beta vulgaris L.] seedlings of different ploidy level

88%

Sliwinska E., Szablowska I., Lukaszewska E.

Polish Journal of Natural Sciences. Supplement

|

2003

|

tom 01

9

Purification and partial characterization of glutamine synthetase isoforms from Triticale seedlings

88%

Bielawski W.

Acta Biochimica Polonica

|

1994

|

tom 41

|

nr 4

Two isoforms of glutamine synthetase (EC 6.3.1.2), cytoplasmic (GSi) and chloroplastic (GSi) were isolated from shoots of 14-day-old Triticale seedlings, and purified 260-fold and 248-fold, respectively. Specific activities of the two preparations were 35.1 and 33.5 nmol x min-1 per mg of protein, respectively. Both crude extracts and homogeneous GSi and GS2 preparations required divalent metal ions (Mg2+, Mn2+, Co2+) for their activities. Mg2+ was the most effective activator, the highest activity of GSi being reached at 5 mM, and that of GS2 at 20 mM MgCl2- The optimum pH for the two isoforms showed large differences, dependent also on the kind of divalent ion. Molecular masses of GSi and GS2 were 305000 Da and 385200 Da, respectively. It seems that native protein of GSi is built from eight identical subunits of Mm 38000 Da and that of GS2 of the same number of subunits but of Mm of about 48000 Da. Proteins of GS isoforms differed significantly in their amino-acid composition.

10

A possible role of plasmalemma redox activity in nitrate uptake by Cucumis sativus L. seedlings

88%

Klobus G., Buczek J.

Acta Physiologiae Plantarum

|

1992

|

tom 14

|

nr 1

11

Changes of H2O2 level in organs of lupine seedlings exposed to lead

88%

Przymusinski R., Bartczak J., Gwozdz E. A.

Polish Journal of Natural Sciences. Supplement

|

2003

|

tom 01

12

Improving christmas rose [Helleborus niger L.] young plants production

88%

Piskornik M.

Acta Scientiarum Polonorum. Hortorum Cultus

|

2003

|

tom 02

|

nr 2

At the stage of the first or second leaf christmas rose seedlings were pricked to pots or to multiple pots, the roots being rolled or nipped off during the operation. The quality of young plants was estimated by determining the fresh weight, number, and length of leaves and roots. The best quality of young plants was obtained from christmas rose seedlings pricked at the stage of the second leaf and with roots rolled when planted to pots.

13

Mineral fertilisation and the quality of parsley seedlings roots

88%

Nawrocki J., Mazur S., Kucmierz J.

Vegetable Crops Research Bulletin

|

2001

|

tom 55

14

Oxidative stress in flax seedling under low water potential - protective role of exogenous polyamines

88%

Niedzwiedz-Siegien I., Tokarewicz A.

Polish Journal of Natural Sciences. Supplement

|

2003

|

tom 01

15

Oxidative metabolism after anaerobiosis in barley [Hordeum vulgare L.] seedlings

88%

Szal B., Rychter A. M.

Polish Journal of Natural Sciences. Supplement

|

2003

|

tom 01