Ukrainian Journal of Forest and Wood Science

Urban environment factors affect adversely on growth and development of plants which are cultivated there. This situation leads to weakening of thair body and increase susceptibility to disease. The use of rapid diagnostic methods (one of them is chlorophyll fluorescence induction method) allows to identify and eliminate the lesion or nutrition elements deficiency at early stages for in-the-field replacement. The objects of research are species and cultivars from genus Clematis L.. The aim of reseach was analysis of clematises photosynthetic apparatus for determination of plants general state and environmental factors influence on them. Measurements were carried out using a portable device “Floratest”. For a number of CFI key indicators and ratiosdetermination the Kautsky curves had been analyzed. This information allows to estimate the influence of environmental factors and paticular species or cultivar fitures on plants state and describe the progress of photosynthesis light phase and photochemical processes efficiency for assimilating light energy in dark phase. Results of chlorophyll fluorescence induction curves analysis releav high flexibility in the leaves chloroplasts structural organization of genus Clematis represenratives, which had been characterized by parameters F₀, F_p, F_v / F_p. Enough effective structural organization inherent for Pigment System FS (II). Obtained after calculating indicator index show that the plants are free from virus infection. Leaves chloroplasts had been characterized by significant chlorophyll fluorescence decline to a stationary level. It’s a sign of intensive passing of dark photochemical reactions.

chlorophyll fluorescence induction, Kautsky curve, photosynthesis, Clematis