Evaluation of the entomopathogenic fungi as a non-traditional control of the rice leaf roller, Cnaphalocrocis medinalis (Guenee) (Lepidoptera: Pyralidae) under controlled conditions

Egyptian Journal of Biological Pest Control

Abdul Qadir¹  Misbah Yaqub²  Bilal Atta³  Arshed Makhdoom Sabir³  Muhammad Rizwan³ 

[1] College of Earth & Environmental Sciences, University of Punjab;Department of Biology, Government College for Women;Rice Research Institute;

关键词: Cnaphalocrocis medinalis;    Entomopathogenic fungi;    In vitro assay;    Greenhouse assay;    Virulence;   

DOI  :  10.1186/s41938-019-0111-2

来源: DOAJ

【 摘 要 】

Abstract The rice leaf roller or leaf folder, Cnaphalocrocis medinalis (Guenee) (Lepidoptera: Pyralidae), is a serious pest of rice crop in Pakistan. The present study was carried out to evaluate the virulence of the entomopathogenic fungi (EPF) Beauveria bassiana, Verticillium lecanii, and Metarhizium anisopliae against the third instar of C. medinalis larvae. Larvae were exposed to fungi under controlled conditions at the available commercial concentration (1 × 108 conidia ml−1). The results showed 73.33, 57.78, and 74.44% mortality rates in the in vitro assay and 56.67, 41.11 and 52.78% in the greenhouse assay of B. bassiana, V. lecanii, and M. anisopliae, respectively. The maximum mycosis from cadavers of C. medinalis was observed at B. bassiana treatment in the in vitro assay (70%) and in the greenhouse assay (53.78%). The maximum sporulation from C. medinalis cadavers was observed at B. bassiana treatment in the in vitro assay (144.67 conidia ml−1) and in greenhouse assay (96.67 conidia ml−1). These results favor the alternative use of EPF in organic rice production for management of C. medinalis.

【 授权许可】

Unknown