Tabari M A, Fathi S A A, Nouri-Ganbalani G, Moumeni A, Razmjou J
Dept of Plant Protection, Faculty of Agricultural Science, Univ of Mohaghegh Ardabili, Ardabil, Iran.
Rice Research Institute of Iran, Mazandaran Branch, Agricultural Research, Education and Extension Organization (AREEO), Amol, Iran.
Neotrop Entomol. 2017 Aug;46(4):452-460. doi: 10.1007/s13744-016-0479-6. Epub 2016 Dec 31.
The striped stem borer, Chilo suppressalis (Walker) (Lepidoptera: Crambidae), is an important pest afflicting rice in most rice-growing countries in the world. Deliniating the categories of resistance in rice genotypes under field conditions could be helpful in managment of this pest. Two categories of resistance, antixenosis and antibiosis, were examined in ten popular and diverse rice genotypes of different origin that had been selected for their resistance to the striped stem borer in a previous study. Significant differences were found between genotypes for the number of egg masses, number of eggs, preference index, larval and pupal weight, larval development time, larval survival rate, larval mine length, and leaf trichome density. It was found that the rice genotypes Novator, A7801, and Nemat had the more pronounced antixenosis-type resistance, whereas AB1 and Shirodi had better antiobiosis-type resistance. Interestingly, the rice genotype AN-74 for which Nemat is the parental line showed both types of resistance and could be effectively used in an integrated pest management of the rice striped stem borer.
二化螟（Chilo suppressalis (Walker)，鳞翅目：草螟科）是世界上大多数水稻种植国家水稻的一种重要害虫。在田间条件下划分水稻基因型的抗性类别有助于防治这种害虫。在之前一项研究中，针对对二化螟具有抗性而挑选出的10个不同来源的常见且多样的水稻基因型，检测了两类抗性，即排趋性和抗生性。在卵块数量、卵数、偏好指数、幼虫和蛹的重量、幼虫发育时间、幼虫存活率、幼虫潜道长度以及叶片毛状体密度方面，基因型之间存在显著差异。发现水稻基因型Novator、A7801和Nemat具有更明显的排趋性抗性类型，而AB1和Shirodi具有更好的抗生性抗性类型。有趣的是，以Nemat为亲本系的水稻基因型AN - 74表现出两种抗性类型，可有效地用于水稻二化螟的综合害虫管理。
