Resistance of wild and near isogenic bean lines with arcelin variants to Zabrotes subfasciatus (Boheman): I - Winter crop
Carregando...
Data
1997-12-01
Autores
Lara, Fernando Mesquita [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Entomológica do Brasil
Resumo
Verificou-se a resistência de linhagens de feijoeiro (Phaseolus vulgaris) portadoras de arcelina nas sementes e provenientes de plantio de inverno, a Zabrotes subfasciatus (Boheman) (Coleoptera: Bruchidae). Foram conduzidos dois ensaios em laboratório, sem e com chance de escolha, com os genótipos: Arc. 1, Arc. 2, Arc. 3, Arc. 4, (linhagens quase-isogênicas contendo arcelina 1, 2, 3 e 4, respectivamente); Arc. 1S, Arc. 3S, Arc. 5S (linhagens selvagens contendo arcelina 1, 3 e 5, respectivamente); IAPAR MD-808 e Porrillo 70. Utilizaram-se parcelas com 10g de cada linhagem e a proporção de 7 casais adultos/parcela. Observaram-se a atratividade, a oviposição, a emergência e o peso de adultos, a mortalidade, o período de desenvolvimento e a perda de peso das sementes. Constatou-se a não-preferência do inseto (atração e oviposição) somente para os genótipos Arc. 3S e Arc. 5S. Os genótipos selvagens Arc. 5S e Arc. 1S e as linhagens quase-isogênicas Arc. 1 e Arc. 2, apresentaram alta resistência (antibiose) a Z. subfasciatus; as linhagens Arc. 4 e Arc. 3 apresentaram resistência moderada, provavelmente devido a não-preferência para alimentação.
The objective of this study was to determine the resistance of winter crops of bean (Phaseolus vulgaris) lines with arcelin variants to Zabrotes subfasciatus (Boheman) (Coleoptera: Bruchidae). Two trials, a no-choice test and a free-choice test, were set up under laboratory conditions using genotypes Arc. 1, Arc. 2, Arc. 3 and Arc. 4 (near isogenic lines containing arcelin 1, 2, 3 and 4, respectively), genotypes Arc. 1S, Arc. 3S and Arc. 5S (wild lines containing arcelin 1, 3 and 5, respectively), and genotypes IAPAR MD-808 and Porrillo 70. Plots with 10 g of each line and a proportion of 7 adult pairs/plot were used. Attractiveness, oviposition, emergence and adult weight, mortality, developmental period, and seed weight loss were determined. Nonpreference (attraction and oviposition) was observed only for the wild genotypes Arc. 3S and Arc. 5S. The wild genotypes Arc. 5S and Arc. 1S and the near isogenic lines Arc. 1 and Arc. 2 presented high resistance of the antibiosis type to Z. subfasciatus. Arc. 4 and Arc. 3 presented moderate resistance, probably due to feeding nonpreference.
The objective of this study was to determine the resistance of winter crops of bean (Phaseolus vulgaris) lines with arcelin variants to Zabrotes subfasciatus (Boheman) (Coleoptera: Bruchidae). Two trials, a no-choice test and a free-choice test, were set up under laboratory conditions using genotypes Arc. 1, Arc. 2, Arc. 3 and Arc. 4 (near isogenic lines containing arcelin 1, 2, 3 and 4, respectively), genotypes Arc. 1S, Arc. 3S and Arc. 5S (wild lines containing arcelin 1, 3 and 5, respectively), and genotypes IAPAR MD-808 and Porrillo 70. Plots with 10 g of each line and a proportion of 7 adult pairs/plot were used. Attractiveness, oviposition, emergence and adult weight, mortality, developmental period, and seed weight loss were determined. Nonpreference (attraction and oviposition) was observed only for the wild genotypes Arc. 3S and Arc. 5S. The wild genotypes Arc. 5S and Arc. 1S and the near isogenic lines Arc. 1 and Arc. 2 presented high resistance of the antibiosis type to Z. subfasciatus. Arc. 4 and Arc. 3 presented moderate resistance, probably due to feeding nonpreference.
Descrição
Palavras-chave
Insecta, Phaseolus vulgaris, antixenosis, preference, Antibiosis, Insecta, Phaseolus vulgaris, antixenose, preferência, Antibiose
Como citar
Anais da Sociedade Entomológica do Brasil. Sociedade Entomológica do Brasil, v. 26, n. 3, p. 551-560, 1997.