Bean weevil control (Zabrotes subfasciatus, 1833) (Coleoptera Bruchidae) through the use of specific seed protein on near isogenic bean lines

A arcelina é uma proteína encontrada somente em feijões silvestres e é o fator que confere resistência ao caruncho-do-feijão Zabrotes subfasciatus (Bohemann, 1833). Procurou-se verificar a influência desta proteína no controle de Z. subfasciatus em uma série de linhas de feijão quase-isogênicas contendo diferentes alelos de arcelina e misturas dos mesmos na seguinte proporção: Arc 1 (100%); Arc 2 (100%); Arc 3 (100%); Arc 4 (100%); Arc 1, 2, 3, 4 (25%); Arc 1, 4 (50%); Arc 1 (80%) + Arc 4 (20%); Arc 1 (20%) + Arc 4 (80%); Arc 4 (80%) + Arc- (20%); Arc 4 (20%) + Arc- (80%). Os controles suscetíveis utilizados foram Arc- (Porrillo 70) e Goiano Precoce. As linhagens quase-isogênicas com Arc 1 e Arc 2 foram as menos danificadas pelo caruncho. Os danos na testemunha suscetível Goiano Precoce foram aproximadamente sete vezes superiores em relação aos das linhagens quase-isogênicas com Arc 1 e Arc 2.Arcelin is a seed protein found only in wild beans which gives resistance to bean weevil (Zabrotes subfasciatus Bohemann, 1833). In this study the effect of this seed protein controlling bean weevil was evaluated on a series of near isogenic bean lines and their mixtures in the following proportion: Arc 1 (100%); Arc 2 (100%); Arc 3 (100%); Arc 4 (100%); Arc 1, 2,3,4 (25%); Arc 1, 4 (50%); Arc 1 (80%) + Arc 4 (20%); Arc 1 (20%) + Arc 4 (80%); Arc 4 (80%) + Arc- (20%) and Arc 4 (20%) + Arc- (80%). The bean cultivars Porrillo 70 and Goiano Precoce were utilized as susceptible checks. The bean near isogenic lines containing Arc 1 and Arc 2 showed significant less damage to bean weevil than the controls. The damages in the "Goiano" susceptible check were about seven times higher than those of the near isogenic lines with Arc 1 and Arc 2