4.2 Article

Wax Removal and Diamondback Moth Performance in Collards Cultivars

期刊

NEOTROPICAL ENTOMOLOGY
卷 46, 期 5, 页码 571-577

出版社

ENTOMOLOGICAL SOC BRASIL
DOI: 10.1007/s13744-017-0493-3

关键词

Plutella xylostella; oviposition; biological life table; preference

资金

  1. National Council of Scientific and Technological Development (CNPq)
  2. Minas Gerais State Foundation for Research Aid (FAPEMIG)

向作者/读者索取更多资源

The diamondback moth Plutella xylostella (Linnaeus, 1758) (Lepidoptera: Plutellidae) is an herbivorous specialist on Brassicaceae species. Brassicas spp. plants developed a range of defenses (chemical, physical, and morphological) to prevent herbivores attack. In this study, we reported the antixenotic and antibiotic effects of outermost layer of two species of epicuticular wax of Brassicaceae, Brassica oleracea L. var. Santo Antnio, and Hybrid Kope F1 100MX, on larvae and adult of P. xylostella. In the choice experiment, P. xylostella adults showed an oviposition preference for collard cultivars Santo Antnio (control) and Hybrid Kope F1 100MX with wax removal. In the no-choice experiment, oviposition was 6.4 times higher in the Hybrid Kope F1 100MX with wax removal than without wax removal. There were significant differences among larvae feeding on leaf disks of Hybrid Kope F1 100MX in the treatments with (65.3 mg) and without wax removal (23.5 mg). The net reproduction rate (R (0) ), and intrinsic (rm) and finite rates of increase (lambda) of P. xylostella in the cv. Santo Antnio were bigger in the treatment without wax removal (R (0) = 50.4, rm = 0.23 and lambda = 1.26) than treatment with wax removal (R (0) = 28.5, rm = 0.20 and lambda = 1.22). However, only the R (0) value was affected by mechanical wax removal in the Hybrid Kope F1 100MX (with wax removal R (0) = 43.3 and without wax removal R (0) = 30.8). In conclusion, the results indicate that collard's wax is important to accessibility and development of P. xylostella, and its removal changes the resistance of collard's varieties to P. xylostella.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.2
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据