Avaliação de antibiose e não-preferência em cultivares de milho selecionados com resistência à lagarta-do-cartucho
Avaliação de antibiose e não-preferência em cultivares de milho selecionados com resistência à lagarta-do-cartucho
复制标题
抗药性和不偏爱的品种在卡图乔抗性品种中的选择
DOI：
--
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
M. Potenza
中科院分区：
文献类型：
--
作者：
P. Viana;M. Potenza
秋粘虫对玉米基因型的非选择性和抗生性害虫是限制玉米产量的主要因素。草地贪夜蛾（Spodoptera frugiperda）被认为是最重要的田间害虫，其减产高达34%。昆虫抗性被认为是一种低成本的控制方法，并代表了保护环境的重要因素。一些抗性品系已被释放，但抗性机制尚未确定。本研究旨在探讨S.在一些选定的线路上的frugiperda。研究在实验室和温室中在EMBRAPA/玉米和高粱国家研究中心进行。结果表明，CMS 14 C基因型的不育性较高，CMS 24和CMS 23基因型的不育性中等。选择试验表明，饲养非偏好'Zapalote奇科'和'BR 201'。与其他基因型相比，CMS 14 C和Zapalote Chico基因型不太适合产卵。
ABSTRACT NON-PREFERENCE AND ANTIBIOSIS OF FALL ARMYWORM FOR SELECTEDCORN GENOTYPESInsect pests is a major factor in limiting maize yields. The fallarmyworm, Spodoptera frugiperda hasbeen considered the most important field pest, reducing yields up to 34%. Insect resistance has beenconsidered a low cost method of control, and represents a significant factor for preserving theenvironment. Several resistant lines have been released, although, the mechanisms of resistance havenot yet been determined. This work was undertaken to investigate possible resistance mechanismssuch as non-preference and antibiosis of S. frugiperda in some selected lines. The studies wereconducted in laboratory and greenhouse at EMBRAPA/Maize and Sorghum National ResearchCenter. The results demonstrated that the genotype CMS 14C has high level of antibiosis and ‘CMS24’ and ‘CMS 23’ medium level. The choice tests indicated feeding non-preference to ‘Zapalote Chico’and ‘BR 201’. The genotypes CMS 14C and Zapalote Chico were less preferred for oviposition,compared with the remaining genotypes.