4.0 Article

Resistance of Phaseolus vulgaris genotypes to Zabrotes subfasciatus (Coleoptera: Chrysomelidae: Bruchinae): categories and mechanisms

期刊

出版社

SPRINGER INT PUBL AG
DOI: 10.1007/s42690-020-00362-x

关键词

Antixenosis; Antibiosis; Fiber; Phenols; Tannin; Mexican bean weevils

资金

  1. National Council for Scientific and Technological Development

向作者/读者索取更多资源

The study evaluated the antixenosis and antibiosis of P. vulgaris genotypes to Z. subfasciatus, and found that some genotypes showed resistance, reducing the number of emerged adults and dry mass consumed, while prolonging the life cycle of Z. subfasciatus. This resistance may be attributed to higher protein content in resistant genotypes, suggesting that proteins like arcelin may play a role in antibiosis against bruchid beetles.
Information on Phaseolus vulgaris L. resistance categories and mechanisms to the Mexican bean weevil Zabrotes subfasciatus Boheman (Coleoptera: Chrysomelidae: Bruchinae) is important for breeding and subsequent commercialization of improved P. vulgaris genotypes. Using resistant genotypes in the bruchid beetles control may reduce insecticide applications, environmental risks, and production costs. Therefore, the objective of this study was to evaluate antixenosis and antibiosis of P. vulgaris genotypes to Z. subfasciatus and the relation of bromatological components on resistance. Free- and no-choice tests were carried out in a climate-controlled room (temperature 25 +/- 1 degrees C, relative humidity 70 +/- 10%, and 12:12 h light:dark photoperiod). Host selection for oviposition, total and viable numbers of eggs, emerged adults, egg to adult period (life cycle), adult longevity, and dry mass consumed of Z. subfasciatus were evaluated on 10 P. vulgaris genotypes. Bean samples of P. vulgaris genotypes were subjected to a bromatological analysis to determine possible resistance mechanisms. In the oviposition antixenosis, none of the P. vulgaris genotypes showed resistance to Z. subfasciatus. Contrastingly, the genotypes Raz 59, 173, 177, 179, 283, 284, 361, and 364 showed resistance in the categories of feeding antixenosis and/or antibiosis to Z. subfasciatus. On average, these genotypes reduced the number of emerged adults in 95.9%, the dry mass consumed in 88.3%, and increased the Z. subfasciatus life cycle in 40.3% compared to susceptible genotypes (IAC Alvorada and 178). Crude protein content in the resistant genotypes was on average 10.9% higher than in the susceptible genotypes. Some proteins, such as arcelin, have antibiotic effects on bruchid beetles, indicating that a higher protein content in resistant genotypes may have been one of the mechanisms responsible for antibiosis of these genotypes to Z. subfasciatus.

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

4.0
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