Attractiveness, non-preference for feeding and oviposition to Ascia monuste orseis Godart (Lepidoptera: Pieridae) in collard greens

ABSTRACT: Collard greens Brassica oleracea var. acephala is one of the most important horticultural grown in Brazil for human feeding. The caterpillar Ascia monuste orseis (Lepidoptera: Pieridae) stands out among the important pest in Brassicaceae causing severe plant defoliation. The objective of this study was to identify resistant genotypes (antixenosis) in 26 collard greens genotypes to A. monuste orseis. In free-choice test, randomized blocks were used; and in the non-choice test we adopted a completely randomized design. Manteiga de Jundiaí, crespa de Capão Bonito, couve de Arthur Nogueira 1, manteiga I-1811, manteiga de Ribeirão Pires I-1811, orelha-de-elefante and Pires 1 de Campinas presented antixenosis (non-preference for oviposition). Pires 1 de Campinas, manteiga I-1811, manteiga de São José, verde-escura and manteiga de Monte Alegre presented antixenosis (non-preference for feeding). These collard greens genotypes can be directly used by farmers for cultivation or by breeders as donor sources in breeding programs for resistance to A. monuste orseis.

摘要：羽衣甘蓝（Brassica oleracea var. acephala）是巴西最重要的供人类食用的园艺栽培作物之一。鳞翅目（Lepidoptera）粉蝶科（Pieridae）的Ascia monuste orseis毛虫是十字花科（Brassicaceae）的重要害虫之一，可造成植株严重落叶。本研究旨在针对A. monuste orseis，从26份羽衣甘蓝种质资源中筛选具有抗生性（antixenosis）的基因型。试验中，自由选择试验采用随机区组设计，非自由选择试验采用完全随机设计。结果显示，Manteiga de Jundiaí、crespa de Capão Bonito、couve de Arthur Nogueira 1、manteiga I-1811、manteiga de Ribeirão Pires I-1811、orelha-de-elefante 以及 Pires 1 de Campinas 等种质表现出产卵非偏好性抗生性；Pires 1 de Campinas、manteiga I-1811、manteiga de São José、verde-escura 以及 manteiga de Monte Alegre 等种质则表现出取食非偏好性抗生性。上述羽衣甘蓝种质既可直接供农户种植应用，也可作为抗A. monuste orseis育种的供体亲本，用于十字花科作物的抗虫育种项目。