Year 2016, Volume 62, Issue 3

Year : 2016
Volume : 62
Issue : 3
   
Authors : Yuri LYKHOLAT, Anna ALEKSEEVA, Nina KHROMYKH, Irina IVAN’KO, Mykola KHARYTONOV, Igor KOVALENKO
Title : ASSESSMENT AND PREDICTION OF VIABILITY AND METABOLIC ACTIVITY OF TILIA PLATYPHYLLOS IN ARID STEPPE CLIMATE OF UKRAINE
Abstract : Urban phytocenoses preserving under the warming climate becomes especially urgent problem in the arid areas, including the steppe zone of Ukraine. Expected elimination of the susceptible woody plants defines necessity of species composition enrichment by introduction. In order to estimate Tilia platyphyllos adaptive capacity, leaves growth and metabolic features were determined for both shaded and lighted trees grew at the plots polluted with transport exhausts in Dnipro city. Reducing leaf surface area by 29 – 60% compared to conventional control (the Botanical Garden) was associated with level of pollution and lighting as well. Leaf weight (per cm2) exceeded the control (4 – 25%) at the most contaminated plots, but diminished with increasing distance from the pollution source. Compared to control, stomata density increased in all leaves, especially at the most polluted and shaded plots (50% above control). Total chlorophyll content was below the control value (maximum 16%) at almost all polluted plots, while Chl a/Chl b ratio exceeded the control. Redox state of glutathione reached the maximum in leaves at the Botanical Garden, decreasing notably at contaminated plots, whereas the total accumulation of glutathione was enhanced. Activity of glutathione-S-transferase was the highest in the most lighted leaf even on contaminated plot, while was inhibited (11-32% below control) by pollutants in shaded leaves. Results showed variability of morphometric characteristics and metabolic properties of large-leaved linden, depending on local environmental conditions. Phenotypic plasticity of urban T. platyphyllos trees is quite capable play a key role in adaptation to climate change allowing survival of the species.
For citation : Lykholat, Y., Alekseeva, A., Khromykh, N., Ivan’ko, I., Kharytonov, M., Kovalenko, I. (2016): Assessment and prediction of viability and metabolic activity of Tilia platyphyllos in arid steppe climate of Ukraine. Agriculture and Forestry, 62 (3): 55-64. DOI:10.17707/AgricultForest.62.3.05
Keywords : large-leaved linden, climate change, adaptability, morphometric and metabolic traits
   
download paper

 

ISSN 0554-5579 (Printed)
ISSN 1800-9492 (Online)
DOI : 10.17707/AgricultForest

Search

Author (s) :
Title :
Keywords :
Volume 66 / Issue 1
to be published in:
2 days, 14 hours, 50 minutes.
r