Open AccessEvaluation of <i>Metarhizium (Nomuraea) rileyi</i> (Farlow) Samson isolates against <i>Spodoptera litura</i> F. under <i>in vitro</i> conditions
Author(s) -
Y Peeru Saheb,
K. Manjula,
K. Devaki,
R. Sarada Jaya Lakshmi,
B. Ravindra Reddy,
N. C. Venkateswarlu
Publication year - 2021
Publication title -
journal of biological control
Language(s) - English
Resource type - Journals
eISSN - 0971-930X
pISSN - 2230-7281
DOI - 10.18311/jbc/2021/26885
Subject(s) - spodoptera litura , spodoptera , biology , virulence , larva , instar , veterinary medicine , spore , horticulture , microbiology and biotechnology , botany , gene , biochemistry , medicine , recombinant dna
Fifteen isolates of Metarhizium ( Nomuraea ) rileyi collected from field populations of Spodoptera litura (F.) and Spodoptera frugiperda J. E. Smith in different crops across different agroclimatic zones of Andhra Pradesh were evaluated for their pathogenicity against third instar larvae of S. litura at the Biocontrol Laboratory, Regional Agricultural Research Station, Tirupati, India. Virulence was tested by applying conidial suspension @ 1x10 7 spores ml –1 on the groundnut leaves on which the larvae were allowed to feed. The cumulative mean larval mortality to the extent of 75.00 to 85.00% was observed with isolates viz. Nr.Yj.KZ, Nr.Dp.KZ, Nr.Rt.KZ, Nr.Rd.HATZ, Nr.Pp. HATZ and Nr.Cp.HATZ whereas the isolates Nr.Ik.SRZ, Nr.Vg.SRZ, Nr.Pl.SZ, Nr.Ag.SZ, Nr.Np.SRZ, Nr.Rp.SZ, Nr.Rg.NCZ, Nr.Hv.SRZ and Nr.Cd.SZ recorded 65.00 to 73.33% mortality.