The effect of retardants of the class of cyclohexanediones (cyclohexanecarboxylates) on winter wheat plants (Triticum aestivum L.) of the varieties Smuglyanka and Podolyanka was investigated. It was shown that treatment with retardants — inhibitors of the gibberellic acid synthesis led to an increase of the content of inorganic components of the plant redox systems — manganese, zinc, and copper, in the flag leaves of Podolyanka variety, and in plants of the Smuglyanka variety — zinc and copper. It was established that the grain of winter wheat variety Smuglyanka contained in its composition more Mg and Zn when plants were treated with mepiquatchloride + ethephon (terpal), and under treatment with proheksadione Ca + mepiquatchloride (medax top) — Mn, Zn and Cu. The use of fertilizer with the content of amino acids in compositions with retardants increased the content of trace elements in the flag leaves of winter wheat. Determination of the microelement composition of plants informs about the redistribution of inorganic elements in the soil-plant system, and allows us to clarify plant nutrition systems under the application of retardants, and to identify factors that affect lack or excess of elements. The application of retardants of the class acylcyclohexanediones did not lead to a significant decrease in the content of individual trace elements. However, foliar nutrition with boron, as well as microelements of redox homeostasis in the BBCH 21-32 phases, may be important at the presence of high levels of nitrogen nutrition, as well as to control the lodging with acylcyclohexanediones derivatives in order to obtain high yields.
Keywords: Triticum aestivum L., retardants, IСР-MS, microelements
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