Influence of 24-epibrassinolide in combination with salicylic acid and methyl jasmonate on productivity and quality of potato minitubers under stress conditions

Abstract

The effect of epibrassinolide in combination with salicylic acid and methyl jasmonate on the number and weight of potato mini-tubers, its content of dry matter, starch and ascorbic acid was studied. A synergistic interaction was revealed under optimal growing conditions for mixtures of epibrassinolide with salicylic acid and methyl jasmonate in relation to a viral infection, which consists in increasing the productivity and quality of the obtained mini-tubers. Under the combined action of water deficit and biotic stress, treatment with epibrassinolide reduced the degree of potato vurus Y infection while maintaining productivity at the level of infected plants and improved product quality. At the same time, treatment with a three- component mixture provides the largest mass and number of mini-tubers obtained, however, a protective effect against viral infection was not manifested in this variant of the experiment.