severe aphid infestation (Wang et al., 1996). An additional threat posed by the aphid is its ability to transmit certain With an efficient greenhouse screening method, the first resistance plant viruses to soybean such as Alfalfa mosaic virus, Soyto the soybean aphid (Aphis glycines Matsumura) was found in cultivated soybean [Glycine max (L.) Merr.] germplasm. No resistance was bean dwarf virus...

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abstract east azarbaijan province is one of the most important areas for poplar production and has the highest suitability of poplar plantation in iran. three species of poplar trees included populus alba, p. nigra and p. x. euramericana are planted and usually attacked by different pests in this province. melasoma populi l., archips rosana (l.) and pemphigus filaginis are some of important pes...

the use of resistant plant cultivars and parasitoids could be an effective strategy in ipm of liriomyza sativa blanchard. cucumber is a preferable host for this insect. in this research, antixenosis resistance of 17 cultivars of cucumber was evaluated to l. sativae under greenhouse condition. results indicated that there were significant differences between cultivars with regard to the number o...

The English grain aphid, Sitobion avenae, is a major pest species of wheat crops; however, certain varieties may have stronger resistance to infestation than others. Here, we investigated 3 classical resistance mechanisms (antixenosis, antibiosis, and tolerance) by 14 wheat varieties/lines to S. avenae under laboratory and field conditions. Under laboratory conditions, alatae given the choice b...

 While occasional insect pests of cultivated sunflowers may be managed by conventional or reducedrisk insecticides, the cumulative costs and risks of relying on insecticides to suppress perennial or severe pests (common in North America) call for exploration of broader pest management strategies.  Recent research with the sunflower moth (Homoeosoma electellum [Pyralidae]) and banded sunflower...

Two commercial cultivars of tomato, Alta and Peto 95, the accession line number LA716 of Lycopersicon pennellii and lines 94GH-006 and 94GH-033 (backcrosses between Peto 95 and LA716), with different leaf acyl sugar contents were screened for resistance to Bemisia argentifolii Bellows & Perring (corresponding to the Spanish B-biotype of Bemisia tabaci (Gennadius)), in greenhouse- and field-no-c...