Agriculture and forestry

Shevchuk Oksana Anatoliy – Candidate of Biological Sciences, Associate professor of department of ecology and guard of environment of the Vinnytsya National Agrarian University (21008, m. Vinnytsya, a street is Sun, 2. E-mail: shevchukoksana8@gmail.com).

The article presents the obtained results of anatomo-morphological measurements of vegetative organs under retardants esphon (0,2 %) and tebuconazole (0,5%) treatment on sugar beets.

It was established that the retardants application on sugar beet led to change the anatomical measurements of storage root: increase their width and decrease their length. It was found that the application of 0,2 % esphon and 0,5 % tebuconazole on sugar beet during the period of 10-12 leaves increased the number of fibrovascular bundles and decreased their height. The analysis has shown that the ratio of phloem to xylem increased in the variant of 0,5 % tebuconazole treated plants and under the 0,2 % esphon treatment this indicator was practically unchanged. It was established that 0,5 % tebuconazole treatment on sugar beet resulted in the changes of leaf mesophyll. The application of triazole derivative compound resulted in the thickening of leaflet due to an increase in the volume of palisade chlorenchyma and the linear dimensions of spongy parenchyma. Consequently, the partial volume of chlorenchyma enhanced. The application of retardant increased the number of stomata and their area, however, the size of the main cells of epidermis and the stomata cells in leaves were decreased.

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