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Cucumber (Cucumis sativus L. cv. Dar) leaves exposed to UV-B irradiation at a biologically effective dose of 9.5 kJ m-2d-1 showed decreased chlorophyll fluorescence parameter values versus the control; in peppermint (Mentha piperita L. cv. Asia) leaves those values were almost unchanged after treatment. Fv/Fo and Rfd were reduced more than other values, indicating inhibition of the oxygen-evolving...
The results of leaf chlorophyll fluorescence measurements of crop oat cv. Akt and wild oat subjected to Dicuran 80 WP (a.s. chlortoluron) herbicide with two adjuvants (Adpros 85 SL, Atpolan 80 EC) are presented. Chlortoluron, as a phenyl-urea herbicide, is an inhibitor of photosynthetic electron transport in photosystem II, which can be measured by means of the special pulse PAM-210 fluorometer as...
Among the investigated four herbicides at the concentration of 2.5 µmol·dm⁻³, linuron (included in the specimen Afalon 450 SC) highly decreased the electron transport rate (ETR) in the leaves of sugar beet and Beta vulgaris L.; the additional application of Atpolan at the concentration of 0.05% (v/v) oncreased the effect. Phen- medipham (in Betanal Elite 274 EC) and chloridazon (in Burex 80 WP), applied...
Naked oat variety of STH296 showed higher tolerance than traditional variety Bajka on short-term UV-B radiation (UV-BBe=11 kj-m2) on the stage of primary photosynthesis reaction recorded using chlorophyll fluorescence induction of the leaves.
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