Monday, December 10, 2001 -
D0188

Life history of the bird cherry-oat aphid, Rhopalosiphum padi, on untransformed and transgenic wheat challenged with barley yellow dwarf virus

Edgardo S. Jimenez, N. A. Bosque-Perez, P. H. Berger, and R. Zemetra. University of Idaho, Department of Plant, Soil and Entomological Sciences, University of Idaho, Moscow, ID

Nymphal development and adult fecundity of Rhopalosiphum padi (L.) were monitored on barley yellow dwarf virus (BYDV)-infected and healthy winter wheat lines, including two containing the barley yellow dwarf virus coat protein (BYDV-CP) gene, susceptible Lambert and virus tolerant Caldwell. Nymphal development was significantly longer on the transgenic genotypes and Caldwell infected with BYDV, compared to healthy plants. Rophalosiphum padi fecundity was significantly lower on virus-infected transgenics compared to healthy plants. In contrast, fecundity was significantly greater on BYDV-infected Lambert and Caldwell than on healthy plants. Aphid intrinsic rate of increase (IRI) was significantly lower on BYDV-infected transgenic plants compared to healthy ones, while in virus-infected Lambert and Caldwell, IRI was higher than on healthy plants.

Species 1: Homoptera Aphididae Rophalosiphum padi (Bird cherry-oat aphid)
Keywords: Fecundity, Nymphal development

The ESA 2001 Annual Meeting - 2001: An Entomological Odyssey of ESA