Soybean Green Stem Caused by Bean Pod Mottle Virus. Fred W. Schwenk, Department of Plant Pathology and Agronomy, Kansas State University, Manhattan 66506. Cecil D. Nickell, Department of Plant Pathology and Agronomy, Kansas State University, Manhattan 66506. Plant Dis. 64:863-865. Copyright 1980 American Phytopathological Society. DOI: 10.1094/PD-64-863.

Soybean stems that remained green after pods matured, and to which leaf petioles were still attached, were infected with bean pod mottle virus. The virus was consistently detected serologically in extracts from the pulvini and commonly from the pith. Virus could be detected in extracts from seeds from infected plants but not from seedlings that developed from the seeds. Soybean seedlings could be successfully inoculated with this virus before the cotyledons opened. Soybean plants grown in the greenhouse and inoculated with this virus were stunted; some had terminal and/or axillary necrosis, and some remained green 200 days. Cultivars and experimental lines tested varied in response to bean pod mottle virus, tobacco ringspot virus, and tobacco streak virus.