Wyniki wyszukiwania

1

Magnetic resonance imaging [MRI] as a method for determination of freezing injury in strawberry crowns

100%

Nestby R., Gribbestad I., Bjorgum R.

Acta Physiologiae Plantarum

|

1997

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tom 19

|

nr 4

In an experiment with controlled freezing, strawberry plants were exposed to 0, −8, −12, −16 and −20°C at a freeze and thaw rate of 2 °C/hour in March/April 1996. Crowns from the cultivar ‘Korona’ were examined using magnetic resonance imaging (MRI), showing a gradual increase of signal intensity from the centre of the crowns, as a result of the temperature drop, which might be caused by lipids. The increase in signal intensity was in accordance with the tissue browning of crowns, which increased substantially when the temperature dropped below −12 °C. A similar reaction was shown in a field experiment comparing wintercovered and not wintercovered strawberry plants. The plants which had been exposed to temperatures between −10 and −16 °C were severely injured. This demonstrates that MRI has a potential as an objective method to determine freeze injury in the field, by «calibrating» the MRI instrument to freezing profiles in controlled experiments.

2

Changes in phenolic and soluble carbohydrate amount in leaves and crowns of.androgenic forms of Festulolium at simulated winter conditions

72%

Pociecha E., Plazek A., Zwierzykowski Z.

Acta Physiologiae Plantarum

|

2007

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tom 29

|

nr 1 Suppl.

3

The aortic valve and other heart structures of selected species of sea birds in a morphological and imaging scope

72%

Bartyzel B. J.

Electronic Journal of Polish Agricultural Universities. Series Veterinary Medicine

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2009

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tom 12

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nr 4

4

Distribution of Trichogramma embryophagum [Htg.] [Hymenoptera, Chalcidoidea] in apple tree crowns

72%

Kot J.

Polish Ecological Studies

|

1995

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tom 21

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nr 1

5

The effect of the presence of crown ether on ion transport across the lipid bilayer

72%

Naumowicz M., Petelska A. D., Figaszewski Z. A.

Cellular and Molecular Biology Letters

|

2003

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tom 08

|

nr 2

We studied the electric properties of phosphatidylcholine bilayers modified with crown ether (dibenzo[18] crown-6). The studies were carried out for various crown ether concentrations in forming solutions and various potassium ion concentrations in electrolyte solutions. The presence of crown ether in the membrane influences the membrane's impedance; there is a reduction in its resistivity, a decrease in its resistance of phase transfer and an increase in its capacity of phase transfer with an increase in crown ether concentration in the bilayer and in K+ ion concentration in the electrolyte solution.

6

Estimation of energy expenditure in wheat crowns during acclimation to frost using metabolic inhibitors

72%

Rybka Z.

Acta Physiologiae Plantarum

|

1995

|

tom 17

|

nr 1

7

Effect of callusing conditions on grafting success in walnut (Juglans regia L.)

58%

Paunovic S. M., Miletic R., Mitrovic M., Jankovic D.

Journal of Fruit and Ornamental Plant Research

|

2011

|

tom 19

|

nr 2

This experimental study was conducted at the Fruit Research Institute, Cacak, Serbia, to determine bud break and callus formation dates, the degree of callus formation, grafting success on day 20 after grafting and overall grafting success on day 28 after grafting in walnut (Juglans regia L.) under different treatments and bench grafting conditions in cultivar Seinovo (control) and the selections 'Ovcar', 'G-286', 'Elit' and 'G-139'. Three treatments were applied: Treatment 1 - covering the graft with sawdust up to the top of the scion without dipping the scion and graft union in paraffin; Treatment 2 - covering the graft with sawdust up to the top of the scion and dipping the scion and graft union in paraffin; and Treatment 3 - covering the graft with both sawdust, up to the top of the scion, and polyethylene foil, and dipping the scion and graft union in paraffin. The best results of the parameters tested were obtained in the treatment involving dipping the graft in paraffin and covering it with both sawdust, up to the scion, and polyethylene foil. The treatment without the use of paraffin, involving only the covering with conifer sawdust up to the top of the scion yielded the poorest results.

8

Correlation between selected parameters of planting material and strawberry yield

58%

Bartczak M., Lisiecka J., Knaflewski M.

Folia Horticulturae

|

2010

|

tom 22

|

nr 1

9

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The reproductive capacity of spider mites (Acari: Tetranychidae) population in single and multi-leader apple tree crowns of Elstar and Jonagold cvs

58%

Sosna I., Kelm M., Lenort M., Kadlubiec W.

Acta Scientiarum Polonorum. Hortorum Cultus

|

2014

|

tom 13

|

nr 5

The present study aimed at finding techniques alternative to chemical control, capable of reducing spider mite density. The experiment was carried out in 7 single-leader and 3 multi-leader training systems. The pest density was compared across the systems and between apple cultivars Elstar and Jonagold showing variable crown densities and trichome cover of leaves. The spider mite mobile stages were more abundant in singleleaders crowns, whereas more eggs were laid in multi-leader crowns. Nevertheless, the egg and the youngest stages survival was reduced in multi-leader crowns probably by the more intensive solar radiation reducing the air RH. The lowest pest abundance was found in the crowns of the V-Gćttingen system, and in the similar, stretched Tatura trellis 2-leader system. These types of crowns should be therefore recommended for integrated and organic apple production.

10

Tree crown width and length as factors influencing the proportion of juvenile and mature wood in the bole of Scots pine and Norway spruce

58%

Jakubowski M.

Zeszyty Naukowe Akademii Rolniczej w Krakowie. Sesja Naukowa

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2005

|

tom 91

429-434

11

Plant age effect on asparagus yielding in terms of carbohydrate balance

58%

Krzesinski W., Gasecka M., Stachowiak J., Knaflewski J.

Folia Horticulturae

|

2008

|

tom 20

|

nr 2

12

Vikoristannja vidihv ta form rodu Corylus L. u dekorativnomu sadihvnictvih ta ozelenenih naselenikh mihsc Ukrajinih ta za kordonom

58%

Kosenko I.

Arboretum Bolestraszyce

|

2002

|

nr 09

95-101

13

Changes in carbohydrate pool and osmolarity in crowns and leaves of winter wheat seedlings during hardening to frost

58%

Rybka Z.

Acta Physiologiae Plantarum

|

1993

|

tom 15

|

nr 1

14

Bacteria active in the conversion of nitrogen and sulphur compounds in rainfall collected under crowns and flowing down tree trunks of pines and spruces in Wigry National Park

58%

Niewolak S., Korzeniewska E., Staszewska J., Krzysztofiak L.

Archiwum Ochrony Środowiska

|

2005

|

tom 31

|

nr 4

15

Badania nad kózkowatymi [Coleoptera, Cerambycidae] związanymi z warstwą koron drzewostanów sosnowych, przy użyciu pułapek Moericke'go

44%

Hilszczanski J.

Wiadomości Entomologiczne

|

1995

|

tom 14

|

nr 4

213-218

The paper contains results of using yellow pan traps (Moerick's traps) to study long horn beetle communities associated with pine crowns. 12 species have been recorded and divided into three seasonal groups. 9 species are biologically connected with scotch pine concerning their development. The connections of recorded anthophilous species with crown layer, even after pine flowering, have been indicated. The rare species Cortodera femorata and Acmaeops marginata are presented in detail.

Ograniczanie wyników

Magnetic resonance imaging [MRI] as a method for determination of freezing injury in strawberry crowns

Changes in phenolic and soluble carbohydrate amount in leaves and crowns of.androgenic forms of Festulolium at simulated winter conditions

The aortic valve and other heart structures of selected species of sea birds in a morphological and imaging scope

Distribution of Trichogramma embryophagum [Htg.] [Hymenoptera, Chalcidoidea] in apple tree crowns

The effect of the presence of crown ether on ion transport across the lipid bilayer

Estimation of energy expenditure in wheat crowns during acclimation to frost using metabolic inhibitors

Effect of callusing conditions on grafting success in walnut (Juglans regia L.)

Correlation between selected parameters of planting material and strawberry yield

The reproductive capacity of spider mites (Acari: Tetranychidae) population in single and multi-leader apple tree crowns of Elstar and Jonagold cvs

Tree crown width and length as factors influencing the proportion of juvenile and mature wood in the bole of Scots pine and Norway spruce

Plant age effect on asparagus yielding in terms of carbohydrate balance

Vikoristannja vidihv ta form rodu Corylus L. u dekorativnomu sadihvnictvih ta ozelenenih naselenikh mihsc Ukrajinih ta za kordonom

Changes in carbohydrate pool and osmolarity in crowns and leaves of winter wheat seedlings during hardening to frost

Bacteria active in the conversion of nitrogen and sulphur compounds in rainfall collected under crowns and flowing down tree trunks of pines and spruces in Wigry National Park

Badania nad kózkowatymi [Coleoptera, Cerambycidae] związanymi z warstwą koron drzewostanów sosnowych, przy użyciu pułapek Moericke'go