The most important viruses of beans

Over 200 diseases with different etiologies have been determined in dry beans and green beans. However, viral diseases seem to cause the greatest economic da-mage to legume production in most parts of the world. Dry beans can be infected by 44 different viruses including Bean common mosaic virus (BCMV), Bean common mosaic necrosis virus (BCMNV), Bean yellow mosaic virus (BYMV) and Cucumber mosaic virus (CMV). Transmission through seeds and/or spread by aphids in non-persistent manner play important role in worldwide distribution of bean viruses. Viral diseases on dry and green beans can have an array of symptoms. The most common symptoms are the mosaic pattern, variegation or deformation of leaves and pods, resulting in reduced plant growth and yield.