Abstract
Ascia monuste orseis (Lepidoptera: Pieridae) is one of the main insect pests of kale. The study was done to identify kale varieties resistant to A. monuste orseis by the antibiosis resistance mechanism. Kale genotypes (26) were evaluated in experiments performed at the Laboratory of Agricultural Entomology of Goiano Federal Institute - Campus Urutaí. A completely randomized experimental design with 50 replicates was used. The biological parameters evaluated were (a) larval stage: development time, instars, viability and larval weight 15 days after hatching; (b) pupal stage: development time, weight of 24-h-old pupae, viability; (c) larvae-adult stage: development time and viability. The genotypes Gigante I-915 and Pires 1 de Campinas have antibiosis resistance. Gigante I-915 caused high larval mortality and Pires 1 de Campinas resulted in low larval and pupal viability of A. monuste orseis. Key words: Brassica oleracea L. var. acephala, Brassicaceae, Great Southern White, host plant resistance, integrated pest management (IPM).  
Highlights
Kale (Brassica oleracea L. var acephala D.C) is an important vegetable for human consumption because it is rich in minerals and essential vitamins (Ferreres et al, 2007)
The present study evaluates the antibiosis resistance mechanism in kale genotypes by determining the biological parameters of A. monuste orseis caterpillars under laboratory conditions
Significant differences were observed in the development time of each instar and in the total life cycle of A. monuste orseis fed on the different kale genotypes (Table 1 and Figure 1)
Summary
Kale (Brassica oleracea L. var acephala D.C) is an important vegetable for human consumption because it is rich in minerals and essential vitamins (Ferreres et al, 2007). Insects fed with the genotypes Manteiga de Mococa, Pires 2 de Campinas, Vale das Garças, Orelha de Elefante, Manteiga de São José and Couve Comum had the longest development time at the third instar stage.
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