Inheritance of resistance to passionfruit woodiness virus in common bean (Phaseolus vulgaris L.)

Passionfruit woodiness virus (PWV) can infect bean (Phaseolus vulgaris L,), causing a light and dark green foliar mosaic, veinbanding, downward curlin g, and plant stunting, The intensity of these symptoms can vary with the st rain of the virus and cultivar, but they resemble those caused by bean comm on mosaic virus. In genetic populations derived from crosses and backcrosse s involving cultivars that are resistant ('Black Turtle 1','Clipper', and ' RedKote') or susceptible ('Black Turtle 2','California Light Red Kidney', a nd 'Pioneer'), a single dominant gene conferred resistance to an Australian strain PWV-K. To this gene, the symbol Pwv (Passionfruit woodiness virus) is tentatively assigned. In plants derived from rooted cuttings of backcros s populations, the same factor also conditioned resistance to three other A ustralian strains, PWV-Mild, PWV-51, and PWV-Tip Blight.