Природничо-географічний факультет
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Item The influence of synthetic growth promoters on morphophysiological characteristics and biological productivity of potato culture(Modern Phytomorphology, 2020) Rohach, V. V.; Rohach, T. I.; Kylivnyk, A. M.; Polyvanyi, S. V.; Bayurko, N. V.; Nikitchenko, L. O.; Tkachuk, O. O.; Shevchuk, O. A.; Hudzevych, L. S.; Levchuk, N. V.The influence of synthetic plant growth promoters of 1-NAA, GA3 and 6-BAP on growth, leaf apparatus and productivity of the Santé potato culture is investigated. It is found that GA3 increased plant height, number of leaf blades, and weight of their dry matter. All preparations increased leaf area and thickened leaf chlorenchyma. The volume of columnar parenchyma cells increased under the action of GA3 and 6-BAP, and the cell size of the spongy parenchyma only after the use of GA3. The stem chlorophyll-bearing parenchyma thickened under the action of 6-BAP. In the plants, treated with 6-BAP, the content of chlorophyll in leaves and chlorophyll index of plants increased. The leaf index increased after the use of GA3 and 6-BAP. Under the action of GA3, the net productivity of photosynthesis increased. All growth promoters increased the dry weight of the whole plant and the yield of potato tubers.Item Features of leaf mesostructure organization under plant growth regulators treatment on broad bean plants(Modern Phytomorphology, 2020) Shevchuk, О. A.; Kravets, O. O.; Shevchuk, V. V.; Khodanitska, O. O.; Tkachuk, O. O.; Golunova, L. А.; Polyvanyi, S. V.; Knyazyuk, O. V.; Zavalnyuk, O. L.It was studied the mesostructure organization of leaf apparatus and pigment content of leaves under application of growth regulators with a different mechanism of action-chlormequat chloride (1%) (retardant of quaternary ammonium compounds group) and Emistim C (0,1 ml/l) (growth stimulator) on broad bean plants. The plant growth regulators treatment on broad beans led to the thickening of leaves due to an increase in the growth of columnar and spongy leaf parenchyma. Growth regulators influenced the formation of the stomatal apparatus of broad beans leaves in different ways. The inhibitory compound chlormequat chloride caused a decrease in the number of lower epidermal cells and stomata with a simultaneous increase in the area of the stomatal cell. The application of stimulator compound Emistim C led to an increase in epidermal cells, without differences in the number of stomata but the area of stomatal cells increased significantly. It has been established the enhancement of photosynthetic processes due to an increase in the chlorophyll content in assimilative cells of leaves under chlormequat chloride on broad beans.