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Wyszukujesz frazę "Hedera helix" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Photosynthetic rates and water use efficiencies in three climber species grown in different exposures at urban and suburban sites
Autorzy:
Borowski, J
Loboda, T.
Pietkiewicz, S.
Powiązania:
https://bibliotekanauki.pl/articles/41208.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
suburban area
urban area
climber species
Fallopia aubertii
Hedera helix
Vitis riparia
Warsaw city
photosynthetic intensity
city centre
Opis:
Water Use Efficiency and photosynthetic rate of Fallopia aubertii (L. Henry) Holub., Hedera helix L. and Vitis riparia Michx. grown in various exposures in two site variants: Warsaw city centre vs. suburbs wereanalysed. All studied climbers showed similar photosynthetic intensity in both sites. The strongest effect of the exposition was found for F. aubertii, followed by V. riparia, and shade tolerant H. helix. WUE of studied climbers was relatively low, higher in suburbs than in the centre, due to lower adaptation to different sites. TheWUE of the climbers depended on exposure and the highest scores were obtained for sunny southern and western walls, while the lowest in northern ones. Intrinsic water use efficiency of the studied climbers was higher in the city centre than in the suburbs.
Źródło:
Dendrobiology; 2009, 62; 55-61
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wood anatomy of ivy-hosting black alder (Alnus glutinosa Gaertn.)
Autorzy:
Yaman, B
Powiązania:
https://bibliotekanauki.pl/articles/41410.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
tree
English ivy
ivy
Hedera helix
ivy impact
host tree
secondary xylem
growth
wood
anatomy
black alder tree
Alnus glutinosa
qualitative property
Opis:
The study aims at investigating the impact of ivy (Hedera helix L.) on the growth and on some wood anatomical characteristics of black alder trees. Ivy-hosting and non-hosting black alder have a similar wood anatomy in terms of qualitative properties. However, in ivy-hosting trees tangential and radial diameter of vessels are narrower (p <0.001), and inter-vessel pits are smaller (p <0.01), whereas vessel frequency is higher (p<0.05) than those of non-hosting ones. The average maximum ray height is greater (p<0.05), and ray number mm-1 is lower (p < 0.001) than those of non-hosting individuals. In addition, the last ten years’ average radial growth has decreased 39.5% compared to that of non-hosting black alder.
Źródło:
Dendrobiology; 2009, 62; 41-45
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seasonal patterns of free proline and carbohydrate levels in cherry laurel (Prunus laurocerasus) and ivy (Hederea helix) leaves and resistance to freezing and water deficit
Autorzy:
Bandurska, H
Plachta, M.
Woszczyk, M.
Powiązania:
https://bibliotekanauki.pl/articles/41593.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
evergreen shrub
woody plant
seasonal change
temperature
climate
water-soluble carbohydrate
proline
free proline
carbohydrate level
leaf
cherry laurel
Prunus laurocerasus
ivy
Hedera helix
freezing resistance
water deficit
resistance
Opis:
Seasonal changes in the levels of water-soluble carbohydrates, free proline and tolerance to freezing and water deficit were studied in leaves of cherry laurel (Prunus laurocerasus) and ivy (Hedera helix). Frost and water deficit tolerance was estimated based on the measurement of electrical conductivity of aqueous media containing leaf discs that were previously treated with frost (–7°C) or polyethylene glycol solution (PEG 600), respectively. Carbohydrate content in leaves of examined species changed differently throughout the measurement period. In laurel leaves the highest carbohydrate level was found in February, while it was lowest in June. In contrast, in ivy leaves the highest carbohydrate content was recorded during summer (June, July), while the lowest in February. However, a lack of correlation between soluble carbohydrate level and membrane injury index was shown in this study. Free proline content in leaves of investigated species was the highest in early spring, i.e. April. The lowest level of free proline in laurel leaves was found in July, September and October, but in ivy from July to February. A negative correlation between proline content and membrane injury index observed in frost and PEG treated leaves of both species suggest that this amino acid may have resulted on membrane protection.
Źródło:
Dendrobiology; 2009, 62; 3-9
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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