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Stunt of Beans Incited by Peanut Stunt Virus. E. Echandi, Professor, Department of Plant Pathology, North Carolina State University, Raleigh 27607; T. T. Hebert, Professor, Department of Plant Pathology, North Carolina State University, Raleigh 27607. Phytopathology 61:328-330. Accepted for publication 13 October 1970. DOI: 10.1094/Phyto-61-328.

The main symptoms caused by peanut stunt virus (PSV) in beans are epinasty, crinkling, leaf distortion, mottling, and stunting of the plant. All commercial bean cultivars grown in North Carolina were found susceptible to the virus. Peanut stunt virus has a wide host range (22 genera) and was not transmitted by bean seed. Peanut stunt virus was inactivated between 55 and 60 C, and was infectious at a dilution of 1:1,000 but not 1:10,000. Expressed juice was infective after 24 but not 48 hours at room temperature. Flower production was reduced about 50% and pod production about 90% in the cultivars Harvester and Extender when inoculated with PSV in the greenhouse.