Wyniki wyszukiwania - Biblioteka Nauki

1

Determination of GA3 in Chara vulgaris by capillary electrophoresis system

100%

Kazmierczak A.

Acta Physiologiae Plantarum

|

1999

|

tom 21

|

nr 4

2

Flower-promoting activity of gibberellin A3 in Pharbitis nil apex cultures exposed to various photoperiods

100%

Galoch E. , Czaplewska J. , Kopcewicz J.

Acta Physiologiae Plantarum

|

1995

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tom 17

|

nr 1

3

Effect of pretreatment on the germination of Eucalyptus gunnii Hook. seeds

88%

Koziara Z. , Pindel Z.

Folia Horticulturae

|

1998

|

tom 10

|

nr 2

4

GA3 content in young and mature antheridia of Chara tomentosa estimated by capillary electrophoresis

88%

Kazmierczak A. , Stepinski D.

Folia Histochemica et Cytobiologica

|

2005

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tom 43

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nr 1

5

Effect of gibberellic acid on post-harvest leaf longevity of Zantedeschia elliottiana [W.Wats.] Engl.

88%

Janowska B. , Jerzy M.

Journal of Fruit and Ornamental Plant Research

|

2003

|

tom 11

6

Gibberellic acid effect on growth and flowering of Ajania pacifica /Nakai/ Bremer et Humphries

75%

Zalewska M. , Antkowiak M.

Journal of Horticultural Research

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2013

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tom 21

|

nr 1

7

Kinetic determination of gibberellic acid applying the BZ oscillating chemical system

75%

Dong Y.

Chemia Analityczna

|

2006

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tom Vol. 51, No. 3

447-452

EN

A new analytical method for the determination of gibberellic acid (GA) has been proposed. It is based on the perturbation effect caused by different amounts of GA on the BZ chemical oscillating system: the Mn(II)-catalysed reaction between L-serine, potassium bromate. and malonic acid in acidic medium. The method utilises a linear relationship between the change in the oscillating period and GA concentration. Such a procedure has been used in this work for the first time. The obtained calibration curve was linear in GA concentration range 1.0 x 10 -8-1.0 10 -6 mol L-1,with the regression coefficient of 0.9998.

PL

Zaproponowano nowąanalitycznąmetodę oznaczania kwasu gibberellowego (GA). Metoda jest oparta na wpływie różnych zawartości GA na chemiczny system oscylacyjny BZ, w którym reakcja między L-seryną, bromianem potasu i kwasem malonowym, zachodząca w środowisku kwaśnym, jest katalizowana przez Mn(II). Opracowana metoda wykorzystuje liniową zależność między okresem oscylacji i stężeniem GA. Takie podejście zostało zastosowane po raz pierwszy w tej pracy. Krzywa kalibrowania była liniowa w zakresie stężeń 1.0 x 10 -8-1.0 10 -6 mol L-1 i miała współczynnik korelacji - 0,9998.

8

Effect of plant hormones on the cambial activity of Cerasus vulgaris Miller under stress conditions with Zn

75%

Yuce K. , Tileklioglu B. , Yuce K. , Tileklioglu B.

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nr 3

9

Effect of pre-harvest application of gibberellic acid on the contents of pigments in cut leaves of Asarum europaeum L.

75%

Pogroszewska E. , Joniec M. , Rubinowska K. , Najda A.

Acta Agrobotanica

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2014

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tom 67

|

nr 2

EN

The experiment determined the effect of gibberellic acid applied prior to harvest on the contents of plant pigments in cut leaves of wild ginger (Asarum europaeum L.), cultivated in an unheated plastic tunnel and in the field. Foliar application of GA3 at a concentration of 100, 200, 400, 600 mg x dm-3 was repeated four times every two weeks. It has been proven that pre-harvest spraying of plants with gibberellic acid at a concentration of 100 mg x dm-3 has a positive effect on the content of photosynthetically active pigments in the leaves of A. europaeum cultivated in an unheated plastic tunnel. Application of GA3 at a concentration of 600 mg x dm-3 led to the accumulation of the greatest amount of anthocyanins in the leaves of Asarum europaeum cultivated both in the unheated plastic tunnel and in the field. The response of plants to GA3 application, expressed in the amount of flavonoids, depended on conditions related to the cultivation site. Pre-harvest treatment of A. europaeum plants with gibberellic acid at concentrations of 100-600 mg x dm-3 reduced the production of flavonoids in tunnel-grown wild ginger, but enhanced their accumulation in plants cultivated in the field. Pre-harvest application of gibberellic acid did not affect the fresh weight or dry mass content in plant material.

PL

W doświadczeniu badano wpływ kwasu giberelinowego zastosowanego przed zbiorem, na zawartość barwników roślinnych w ciętych liściach kopytnika pospolitego (Asarum europaeum L.), uprawianego w nieogrzewanym tunelu foliowym i w polu. GA3 w stężeniu 100, 200, 400, 600 mg × dm-3 zastosowano dolistnie, czterokrotnie, w odstępach dwutygodniowych. Wykazano, że przedzbiorcze opryskiwanie roślin kwasem giberelinowym w stężeniu 100 mg × dm-3 korzystnie wpływa na zawartość barwników aktywnych fotosyntetycznie w liściach A. europaeum uprawianego w nieogrzewanym tunelu foliowym. Aplikacja GA3 w stężeniu 600 mg × dm-3 spowodowa na nagromadzenie największej ilości antocyjanów w liściach Asarum europaeum uprawianego zarówno w nieogrzewanym tunelu foliowym, jak i w polu. Reakcja roślin na aplikację GA3, wyrażona ilością nagromadzonych flawonoidów, zalecana od warunków związanych z miejscem uprawy. Traktowanie przed zbiorem roślin A. europaeum kwasem giberelinowym w stżeeniu 100–600 mg × dm-3 ograniczało wytwarzanie flawonoidów u kopytnika uprawianego w tunelu, ale sprzyjało ich gromadzeniu u roślin w polu. Przedzbiorcza aplikacja kwasu giberelinowego nie mia- ła wpływu na świeżą masę i zawartość suchej masy w materiale roślinnym.

10

Branching stimulation in Hosta sp.

75%

Witomska M. , Jaszczuk A. , Ilczuk A.

Annals of Warsaw University of Life Sciences - SGGW. Horticulture and Landscape Architecture

|

2010

|

tom 31

11

Micropropagation of Harpagophytum procumbens [Burch.] DC. ex Meisn.: the effect of cytokinins on shoot multiplication

75%

Grabkowska R. , Wysokinska H.

Herba Polonica

|

2009

|

tom 55

|

nr 3

244-250

EN

The procedure of in vitro propagation of Harpagophytum procumbens using shoot tips was developed. Shoot tips were cultured on Schenk and Hildebrandt (SH) agar medium supplemented with 0.57 µM indole-3-acetic acid (IAA) in combination with various cytokinins: 6-benzylaminopurine (BAP), thidiazurone (TDZ), kinetin or zeatin at four concentrations (2, 4, 6 or 8 µM). The best shoot multiplication rate (11.2 shoots/explant for 5 weeks) was achieved in the presence of 6 µM TDZ. The shoots were small and their elongation on SH medium supplemented with gibberellic acid (GA3 ) was necessary. Shoots of H. procumbens were rooted on full-strength or half-strength Murashige and Skoog (MS) agar medium either with or without auxin. Plantlets were transferred into pots and maintained in the greenhouse. After 1 month, the overall survival of plants was 83% but it decreased to 27% after 6 months.

PL

Opracowano procedurę mikrorozmnażania Harpagophytum procumbens przy użyciu wierzchołków pędów. Wierzchołki pędów hodowano na agarowym podłożu Schenka i Hildebrandta (SH) uzupełnionym kwasem indolilo-3-octowym (IAA) w stężeniu 0.57 µM i jedną z cytokinin: 6-benzyloaminopuryną (BAP), tidiazuronem (TDZ), kinetyną lub zeatyną w czterech różnych stężeniach (2, 4, 6 lub 8 µM). Najwyższy współczynnik mnożenia pędów (11,2 z jednego eksplantatu w ciągu 5 tygodni) osiągnięto w obecności 6 µM TDZ. Pędy były krótkie i konieczne było ich wydłużanie na podłożu SH uzupełnionym kwasem giberelinowym (GA3 ). Pędy H. procumbens ukorzeniano na agarowym podłożu Murashige i Skooga (MS) z całkowitą lub obniżoną do połowy zawartością makro- i mikroelementów, bez auksyn lub z ich dodatkiem. Roślinki przenoszono do doniczek i hodowano w szklarni. Po miesiącu przeżywało 83% roślin, ale procent ten obniżał się do 27% po 6 miesiącach.

12

Influence of exogenous gibberellic acid (GA3) on the generative development of grafts from non-vernalized winter rape (Brassica napus L. var. oleifera) grafted on vernalized stock

75%

Filek W. , Dubert F. , Pienkowski S.

Bulletin of the Polish Academy of Sciences. Biological Sciences

|

1988

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tom 36

|

nr 7-9

13

Studies on morphology and metabolism of prothalli during GA3-induced formation of antheridia in Anemia phyllitidis

75%

Kazmierczak A.

Acta Physiologiae Plantarum

|

1998

|

tom 20

|

nr 3

EN

In Schizaeaceae ferns, including Anemia phyllitidis, formation of antheridia is known to be induced by exogenously applied gibberellic acid. Also present studies show that GA₃ (10⁻⁵ mol·dm⁻³) modifies the development of gametophytes of Anemia phyllitidis. Simultaneously with formation of antheridia, they exhibit lower number of cells but only slightly lowered profile areas and lengths of prothalli. Growth in size of individual cells compensates for lowered division frequency. Cytophotometric measurements reveal no essential changes in the DNA content in vegetative cells of the control and GA₃-stimulated gametophytes. It remains at haploid level and therefore it is assumed that cell cycle is blocked at G1 phase. Application of GA₃ increases the total amount of proteins. CZE (Capillary Zone Electrophoresis) separation of peptides extracted from control and GA₃-treated prothalli indicates the differences in the ratio of their particular forms. In GA₃-treated gametophytes the activities of acid and basic phosphatases, contents of carbohydrates (glucose, starch), chlorophyll, the number of chloroplasts and dry mass of prothalli are increased. GA₃-intensified metabolism, evidenced in gametophytes of A. phyllitidis, may be interpreted as a stimulatory mechanism which influences metabolic pathways involved in forming, developing and maturing of male sex organs.

14

Optimization of carbon-nitrogen ratio for production of gibberellic acid by Pseudomonas sp.

75%

Basiacik K. S. , Aksoz N.

Polish Journal of Microbiology

|

2004

|

tom 53

|

nr 2

EN

In this study, favorable carbon-nitrogen ratio for high yields of gibberellic acid (GA₃) production from Pseudomonas sp. was investigated. First of all, optimum carbon (glucose, maltose, sucrose, fructose, lactose) and nitrogen (KNO₃, NH₄C1, NaNO₃, urea, glycine) sources among the others were chosen. The highest yield of GA₃ productivity was found in growth medium supplemented with fructose (168.5 mg/L). NaNO₃ was found as a suitable nitrogen source (141 mg/L). Then, in order to determine the optimum carbon-nitrogen ratio, different concentrations of carbon (from 50 mM to 150 mM) and nitrogen (from 17 mM to 47 mM) sources were added in culture media. As a result, optimum carbon-nitrogen ratio for GA₃ production from Pseudomonas sp. was found to be 100:17 mM.

15

The effect of gibberellic acid and benzyladenine on the yield of [Allium karataviense Regel.] 'Ivory Queen'

75%

Pogroszewska E. , Laskowska H. , Durlak W.

Acta Scientiarum Polonorum. Hortorum Cultus

|

2007

|

tom 06

|

nr 1

EN

The research focused on the effect of GA₃ and BA on the yield of Allium karataviense ‘Ivory Queen’. The substances in concentration of 500 mg₃·dm⁻³ were applied in the form of a 60-minute bulb soaking prior to planting or plant spraying in the green bud phase. It was discovered that GA₃ applied in the both forms causes the inflorescence shoot elongation and the increased number of flowers in inflorescence, and increases the total yield expressed in the bulb weight. When applied in the form of plant spraying, it increases the number of bulbs in the total yield. Plant spraying with BA leads to the production of a greater number of flowers in inflorescence. BA application in the both forms increases the total yield expressed in the bulb weight.

PL

Zbadano wpływ GA₃ oraz BA na plonowanie Allium karataviense ‘Ivory Queen’. Substancje w stężeniu 500 mg·dm⁻³ aplikowano w formie 60-minutowego moczenia cebul przed sadzeniem lub opryskiwania roślin w fazie zielonego pąka. Stwierdzono, że GA₃ aplikowany w obu formach powoduje wydłużenie pędu kwiatostanowego i zwiększenie liczby kwiatów w kwiatostanie oraz zwiększa plon ogólny wyrażony masą cebul. Podawany w postaci opryskiwania roślin zwiększa średnicę kwiatostanu, stosowany w formie moczenia cebul, zwiększa liczbę cebul w plonie ogólnym. Opryskiwanie roślin BA powoduje wytwarzanie większej liczby kwiatów w kwiatostanie. BA stosowana w obu formach zwiększa plon ogólny wyrażony masą cebul.

16

The effect of gibberellic acid on growth and flowering of Gerbera jamesonii Bolus

75%

Pobudkiewicz A. , Nowak J.

Folia Horticulturae

|

1992

|

tom 04

|

nr 2

17

Changes in peroxidase and IAA oxidase activities during cell elongation in Phaseolus hypocotyls

75%

Bagatharia S. B. , Chanda S. V.

Acta Physiologiae Plantarum

|

1998

|

tom 20

|

nr 1

EN

Cytoplasmic and salt-extracted peroxidase and IAA oxidase activities were studied in Phaseolus vulgaris hypocotyls treated with gibberellic acid (GA, 200 µM), naphthyl acetic acid (NAA, 100 µM) and distilled water control (DW). Peroxidase activity was assayed with four hydrogen donors during the initial phase of hypocotyl elongation. Though peroxidase activity showed a decreasing trend with time in all the hydrogen donors studied; considerable variation with different hydrogen donors was observed. NAA had maximum peroxidase activity as compared to DW or GA treatment. The activity showed a clear inverse correlation with hypocotyl growth. IAA oxidase activity showed a similar trend with growth as peroxidase activity. A highly significant correlation was observed between peroxidase and IAA oxidase activities and high molecular weight xyloglucan content (P<0.001). Finally, the possible role of peroxidase and IAA oxidase activities in hypocotyl elongation growth is discussed.

18

Production of gibberellic acid by Aspergillus niger using some food industry wastes

75%

Cihangir N. , Aksoz N.

Acta Microbiologica Polonica

|

1996

|

tom 45

|

nr 3-4

19

Degradation of xyloglucan and pectic polysaccharides during cell elongation in Phaseolus vulgaris hypocotyls

75%

Chanda S. V. , Bapodara C. , Singh Y. D.

Acta Physiologiae Plantarum

|

1995

|

tom 17

|

nr 4

20

Improving the feathering of young apple trees in environment friendly way by modified benzyladenine application

75%

Csiszar L. , Buban T.

Journal of Fruit and Ornamental Plant Research

|

2004

|

tom 12

|

nr Spec.ed.