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Type of publication: conference paper
Type of publication (PDB): Tezės kituose recenzuojamuose leidiniuose / Theses in other peer-reviewed publications (T1e)
Field of Science: Biologija / Biology (N010)
Author(s): Januškaitienė, Irena
Title: The dynamics of photosynthetic parameters of Phaseolus vulgaris and Vicia fabo under strong cadmium stress
Is part of: The vital nature sign [elektroninis išteklius] : 8th international scientific conference : abstract book. Kaunas : Vytautas Magnus university, 2014, [no. 8]
Extent: p. 57-57
Date: 2014
Abstract: One of the most toxic metals is cadmium, which inputs include those from commercial fertilizers, sewage sludge and other wastes used as soil amendments and also atmospheric deposition. The aim of this experiment was to study the dynamics of the photosynthetic parameters of bean (Phaseolus vulgaris L.) and broad bean (Vicia fabo L.) under strong cadmium stress effect. Plants were sown in a neutral (pH 6.0–6.5) peat substrate, when 2nd true leaf unfolded, growth substrate was watered with 6mM concentration CdSO4 solution. Gas exchange parameters (photosynthetic rate (Pn), transpiration rate (Tn), intercellular CO2 concentration (Ci) and water use efficiency (WUE)) were measured on every day with portable photosynthesis system LI-6400. Content of photosynthetic pigments were analyzed in acetone extract using a spectrophotometer on the last 5th day of the experiment. On the first day of treatment the Pn of Cd treated Phaseolus vulgaris plants decreased only by 4.3% and statistically insignificant, while Pn of Vicia fabo decreased by 35.9% (p0.05) on the first and the last day after Cd treatment respectively, compare to the reference. The changes, detected on the last day of the experiment, of chorophyll a and b ratio were different too, i. e. for Phaseolus vulgaris it decreased by 5.7% (p>0.05), and for Vicia fabo – increased by 1.4% (p>0.05), compare to the reference. [...]
Affiliation(s): Aplinkotyros katedra
Vytauto Didžiojo universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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