University of Florida

Potato Y Virus


Potato Y


Entire plant


Newly infected plants exhibit dark brown dead areas in mature leaflets - especially the terminal one; young leaves develop chlorosis around veins; new growth after infection appears slightly distorted, faintly mottled with leaves and petioles curling downward; stems are streaked purple; plants are stunted and poor yielding with no fruit symptoms.

Pathogen Spread

Vectored by aphids from weed hosts. Records of severe epidemics in area 1 (Appendix 9).

Favorable Conditions

Very warm fall months when vector is prevalent.

Potato Y Virus Picture

Image: not available currently.