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Anatomical and morphological changes in the sorize leaves under the use of biologically active substances

Author(s) Карпенко В.П., , ,
Шутко С.С., , ,
Hnatiuk M.G., , , Uman National University of Horticulture
Category The Agronomy
year 2019 issue Issue number 94. Part 1
pages 264-274 index UDK 581.45:[633.174:631.811.98]
DOI 10.31395/2415-8240-2019-94-1-264-274 (Link)
Abstract Herbicides, like the biologically active substances, can affect a number of physiological indicators including structural and adaptive changes in plants that appear in the corresponding changes in the number and size of plant cells in the leaf apparatus. The article deals with the results of studies on the anatomical and morphological changes in the leaf apparatus of sorize (Sorghum orysoidum) under the use of herbicide Peak 75 WG and Regoplant plant growth regulator. The research objective was to determine the influence of different rates of herbicide Peak 75 WG (10; 15; 20; 25g/ha) under the different ways of Regoplant plant growth regulator use (treatment of seeds (250 ml/t) and crops (50 ml/ha)) on the anatomical and morphological changes of the leaf apparatus. The objects of the study were the plants of sorize (Sorghum orysoidum), variety Titanium, Herbicide Peak 75 W.G. and Regoplant biological plant growth regulator. Anatomical and morphological studies were performed on the Micromed XS-5520 microscope. The research samples were selected according to generally accepted methods. The obtained results showed that the anatomical structure of the lamina of sorize plants (Sorghum orysoidum) changed depending on the weather conditions, rates and methods of use of herbicides and plant growth regulators in the sorize crops. During the herbicide application Peak 75 WG in the rates of 10; 15; 20 and 25 g/ha, the number of epidermal cells in the field of view of the microscope decreased on average relative to the control and by 66; 18; 26 and 13 pcs. At the same time, an increase in cell size (length and width) was observed, which was accompanied by an increase in their area relative to the control by 8; 12; 19 and 4% respectively. However, the most optimal conditions for the formation of the anatomical and morphological structure of the epidermis of sorize leaves were under the complex use of Herbicide Peak 75 WG (10; 15; 20; 25g/ha) and plant growth regulator Regoplant (treatment of seeds (250 ml/t) and crops (50 ml/ha)), as evidenced by the morphostructure coefficient 0,81-0,88 which is typical for plants with high productivity of crops.
Key words anatomical and morphological structure, leaves, epidermis, herbicide, plant growth regulator, sorize (Sorghum orysoidum).
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