One of the most important leaf pests in bean is leafminer fly, Liriomyza sativae Blanchard. Larvae of this pest dig serpentine linear tunnels in leaves inflicting major injury to plants and in severe infestations cause intensive weakness or death of plants. Since use of resistant varieties is an effective technique in Integrated Pest Management (1PM) of this pest, antibiotic resistance of six bean varieties to leafminer fly was studied. Biological indices measured in this study were:
number of feeding-ovipositioning punctures, number of larval mines, incubation period, larval and pupal period, number of pupae, percentage of larval and pupal mortality, pupa weight and adult sex ratio. This research was conducted in a growth chamber at 25+1°C, 55+5% RH and 16:8 (light: dark) photoperiodism. Results showed significant differences in larval stage traits including percentage of mortality and larval period, but no significant differences were observed in other traits among varieties. Parastoo and Talash exhibited the highest degrees of resistance. Larval mortality on these two varieties was assessed as 36.67+10.22% and 30.67+5.29%, respectively. These varieties can be used in pest management program in bean.
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