Evaluation location: Washington, United States
Fifty plant Introduction lines of the garden pepper (Capsicum annuum L.) were screened for resistance to curly top virus using the beet leafhopper (Circulifer tenellus Baker) as the vector. A single strain of virus known to be pathogenic on peppers was used. Inoculations were done by caging 3 or 15 viruliferous leafhoppers onto a leaf at the 4 true-leaf stage of growth. Results of two replications within lines were combined to derive the final percentages of resistant plants. Four lines (PI 257053, PI 281297, PI 288938 and PI 357522) had good levels of resistance when inoculated by 3 leafhoppers. None of the lines was resistant to the virus when inoculated by 15 leafhoppers.