Spring wheat plantlets variety reaction to Banvel herbicide

The purpose of the study is to determine the level of sensitivity of two varieties of spring wheat of different types to the herbicide Banvel (Syngenta, Switzerland), created on the basis of dicamba, which is a synthetic auxin. Herbicide solutions with concentrations corresponding to half, single and double working doses (0.5RD, 1RD and 2RD, respectively) were used in the experiments. The sensitivity of Minusa and Zemlyachka Sibiri varieties to the herbicide was evaluated. A difference was found in the reaction of plants of different varieties to the herbicide as a stress factor. It was assumed that this difference is genetically determined. In the Minusa variety, a decrease in the growth rate of axial organs was noted against the background of a lower mitotic activity of the apical meristem and an increased frequency of cell division anomalies associated with an increase in the dosage of the herbicide. In the variety Zemlyachka Sibiri, no significant dependences of growth and development parameters on this factor were revealed. The most sensitive to the action of the herbicide was the average total length of the roots of the seedling - in plants of the Minusa variety under the action of the 2RD solution, it decreased by 43.6%, while its variability increased from 24.0 to 42.1%. In the same variety, a lower connectivity of the studied parameters was also observed, which increased under the action of a stress factor.