Mechanical transmission of Potato virus Y (PVY) through seed cutting and plant wounding.

Fageria, M.S., Nie, X., Gallagher, A., and Singh, M. (2015). "Mechanical transmission of Potato virus Y (PVY) through seed cutting and plant wounding.", American Journal of Potato Research, 92(1), pp. 143-147. doi : 10.1007/s12230-014-9418-4  Access to full text

Abstract

The transmission of PVY strains, PVY{SUP}O{/SUP}, PVY{SUP}N{/SUP}:{SUP}O{/SUP}, and PVY{SUP}N{/SUP}{SUP}T{/SUP}{SUP}N{/SUP} via tuber cutting and plant wounding was investigated in PVY susceptible cultivars Shepody and Russet Norkotah. For the tuber cutting experiment, after one infected tuber was cut with a knife, four uninfected tubers were cut sequentially with the same knife without disinfecting it between the cuts. In the plant wounding experiments, wounds were induced in the healthy and infected plants of Shepody by bouncing, brushing, hammering, squeezing, and Carborundum rubbing treatments. These treatments allowed exchange of sap between the healthy and infected plants. Results demonstrated that seed cutting did not transmit PVY, whereas plant wounding treatments caused varying levels of PVY transmission, depending on the wounding treatment. Plant bouncing was the least effective whereas hammering was the most effective.

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