Silício como fonte de indução de pseudo-resistência à lagarta-do-cartucho em milho crioulo

Abstract

Landrace maize presents important genetic material for plant improvement, as it has a high potential for adaptation to specific environmental conditions. Maize crops are attacked by a variety of pests during all phenological stages of the plant, among which the fall-armyworm stands out. The objective of this assay was to evaluate the silicon-induced pseudo-resistance of landrace maize varieties to fall armyworm in a greenhouse. For the experiment, two varieties of Landrace maize were used in the presence and absence of silicon. Two-day-old caterpillars were placed inside the plant when they reached the V4 stage. The assessment was made using the Davis scale. The data were subjected to exploratory analysis, and subsequently to Mann-Whitney analysis at 5% probability. There was an effect of induction of pseudo-resistance in Landrace maize popcorn and red cultivars by silicon against Spodoptera frugiperda.