Abstract

Potato leaf roll virus (PLRV) was usually better transmitted byMyzus persicae from source plants kept during the pre-acquisition period at 12°C than from those kept at 26°C. Significantly more plants became infected when PLRV was acquired or inoculated at 26°C than at 12°C. The effect of temperature during the acquisition feeding period was found to be greater than that of temperature during the inoculation feeding period. PLRV was most frequently transmitted when it was both acquired and inoculated at 26°C.

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