Abstract
The objective of this study was to evaluate the resistance of ten maize varieties to Dalbulus maidis. Under choice and no-choice conditions, the attractiveness of maize plants to D. maidis for feeding, shelter, and oviposition was assessed. The developmental effects on different life stages of D. maidis across maize varieties, as well as the damage caused to maize plants, were also evaluated. The varieties IAC AIRAN and Amarelo Astecão recorded the highest adult preference means, whereas Pipoca Roxo Kika was the least preferred. Under choice conditions, no statistically significant difference was observed regarding oviposition. However, under no-choice tests, a higher number of eggs were laid on Al Bandeirante compared with Amarelo Astecão. Insects maintained on NS 90 PRO 2 plants exhibited the longest nymphal period, while those on Pipoca Roxo Kika had the longest overall developmental period compared with insects on Branco Pedro 2. Insects reared on Amarelo Laleska, Amarelo Astecão, NS 90 PRO 2, Pipoca Roxo Kika, and Vermelho Pedro showed shorter adult longevity than those reared on Al Bandeirante. There was no statistically significant difference in percentage growth or visual damage scale data. A dendrogram indicated the formation of two major groups: i) susceptible varieties and ii) resistant varieties. The results of this study suggest that potential sources of resistance in maize plants were identified, which may assist in the management of D. maidis, support the selection of suitable materials for field cultivation, and guide maize breeding programs.