Wyniki wyszukiwania - Biblioteka Nauki

1

Acid phospatase activity in maize (Zea mays La) seedlings treated with sodium humate

100%

Kummerova M.

Acta Societatis Botanicorum Poloniae

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1986

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tom 55

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nr 2

2

Nitrate reductase and acid phosphatase activities as affected by inorganic phosphate in corn roots

63%

Kummerova M. , Buczek J.

Acta Societatis Botanicorum Poloniae

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1983

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tom 52

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nr 1

3

Response of Matricaria recutita L. to abiotic stress induced by cadium, environmental acidity and germination in the dark

51%

Kummerova M. , Kralova K. , Masarovičova E.

Chemia i Inżynieria Ekologiczna

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2006

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tom Vol. 13, nr 11

1255-1261

EN

This study is focused on the investigation of the effect of abiotic stress caused by increasing concentration of cadmium (30, 60, 120 and 240 žmol dm-3 Cd(N03)2) in the solution, environmental acidity (pH 3.5, 4.5 and 6.5) and dark germination on the root and shoot growth of two cultivars of Matricaria recutita (cv. Lutca, and cv. Goral). The applied cadmium concentrations inhibited the root and shoot length of both chamomile cultivars. The root length of plants was more reduced by Cd treatment than the shoot length. The application of 60 žmol - dm 3 Cd resulted in significantly higher root and shoot inhibition of cv. Lutea comparing with that of cv. Goral. In acid environment (pH 3.5 and 4.5) no significant changes in Cd effect in both cultivars were observed.

PL

Celem badań była ocena wpływu stężenia kadmu (30, 60, 120 i 240 mmol dm -3 Cd(N03)2), kwasowości środowiska (pH 3.5, 4.5 i 6.5) i braku światła na wzrost korzeni i pędów dwóch odmian uprawnych Matricaria recutita (cv. Lutea, i cv. Goral). Stosowane stężenia kadmu hamowały rozwój korzeni i pędów u obu odmian uprawnych rumianku. Zastosowanie Cd miało większy wpływ na długość korzenia roślin niż na długość pędu. Zastosowanie 60 mmol dm -3 Cd spowodowało znaczne ograniczenie wzrostu korzeni i pędów u cv. Lutea w porównaniu z cv. Goral. W środowisku kwaśnym (pH 3.5 i 4.5) wprowadzenie Cd nie spowodowało żadnych znaczących zmiany u obu odmian uprawnych.

4

Principles of classification of medicinal plants as hyperaccumulators or excluders

51%

Masarovicova E. , Kralova K. , Kummerova M.

Acta Physiologiae Plantarum

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2010

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tom 32

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nr 5

EN

Strategies of plants, known as metallophytes, in response to metal excess are explored. Specific features of medicinal plants related to metal exposition are discussed. Different parameters used for metallophyte classification are discussed. Bioaccumulation and translocation factors are characterized. Chamomile (Matricaria recutita L.), one of the most important medicinal plants, is presented as a case history. Based on actual knowledge of plant response to metal excess and published data related to chamomile, it has been concluded that this plant species is Cd hyper/ accumulator. Thus, chamomile can manifest high potential for cleaning-up (phytoremediation) of the soils contaminated with cadmium. However, it should be stressed that cultivation of this medicinal plant under natural conditions for pharmaceutical use should be carefully supervised.

5

Fluoranthene-induced production of ethylene and formation of lysigenous intercellular spaces in pea plants cultivated in vitro

51%

Vanova L. , Kummerova M. , Votrubova O.

Acta Physiologiae Plantarum

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2011

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tom 33

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nr 3

EN

The effect of increasing concentration of polycyclic aromatic hydrocarbon (PAH) fluoranthene (FLT; 0.1, 1 and 5 mg l⁻¹) on the growth, ethylene production and anatomy of stems of 21-day-old pea plants cultivated in vitro in MS medium, with or without FLT, enriched with 0.1 mg l⁻¹ indole-3-acetic acid (IAA) or with combination of 0.1 mg l⁻¹ IAA + 0.1 mg l⁻¹ N⁶-benzyladenine (BA) were investigated. The low concentration of 0.1 mg l⁻¹ FLT, in both IAA- and IAA + BA-treated plants, significantly stimulated the growth of pea callus, while higher concentrations 1 mg l⁻¹ and especially 5 mg l⁻¹ FLT significantly inhibited it. Pea shoots were significantly influenced only after application of 5 mg l⁻¹ FLT in IAA treatment. Significantly increased production of ethylene was found in IAA + BA treatments in all concentrations of FLT, whereas in IAA treatments in 1 and 5 mg l⁻¹ FLT. The lysigenous aerenchyma formation in the cortex of pea stems significantly increased in all FLT treatments and its highest proportion was found in plants exposed to 1 mg l⁻¹ FLT.