Infected plants are dwarfed and show typical yellowing and necrosis. Internal necrotic spots occur in stems, particularly in upper nodes. Pith necrosis of stems is common. Tubers are usually few, small and eformed with surface cracking and internal necrotic spots. Infected tubers hardly germinate. High temperatures favour and low temperatures delay ymptom development.

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Presence among species

AgentsSusceptible host
Potato yellow dwarf virusSolanum tuberosum (Pythozome V13)