Authors
Plant Protection Department, Agricultural and Natural Resources Research and Education Center, Chahrmahal va Bakhtiari, IRAN
Abstract
In this study 7 bean lines, which showed relative resistance to two-spotted spider mite in field condition, were selected from local variety “Lordegan” and tested in greenhouse and field condition. Study was conducted in a randomized complete block design with 3 replications. In greenhouse, studies were carried out in 2 stages. Preliminary stage consisted of 9 treatments including Lines 1-7, Talash and Lordegan varieties and advanced stage consisted of 6 treatments including Lines 1-4, Talash and Lordegan varieties. Artificial infestation was done with introducing 5 adult females (3-5 days) on each plant. To determine the mite population density (including eggs and active stages), sampling was carried out 2 and 4 weeks after infestation. Damage score was from 0 (no damage) to 9 (death of plant). Under the field condition, in order to determine the mite population density, sampling was done from onset of infestation up to the end of growing season. Results indicated that, line1, which was selected from local variety “Lordegan”, was resistant to two-spotted spider mite, because in this line, oviposition, population density and mite damage were significantly lower compared to the others. Therefore, it is introduced for mass production or using in plant breeding programs.
Keywords
Thrips palmi (Thysanoptera, Thripidae) in bean. J. Econ. Entomol., 95 (5): 1066-1073.
15 pp. (In Persian with English summary)
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