Journal of Plant Disease Sciences

Different crop and weed species were evaluated to study the host range of Sunflower Necrosis Virus (SNV). Among various crop plants tested by mechanical sap and thrips inoculation, the virus infected Helianthus annuus (cv. KBSH-44), Citrullus lanatus (cv. Arka Manik), Cucurbita moschata (cv. Arka Suryamukhi), Arachis hypogaea (cv. JL-24), Lablab purpureus (cv. HA-3), Macrotyloma uniflorum (cv. PHG-9), Vigna unguiculata (cv. C-152), Nicotiana tabacum (cv. Xanthi) and Glycine max (cv. KB-79). The highest mean per cent transmission was recorded on Helianthus annuus (cv. KBSH-44) both by sap inoculation and thrips transmission (53.33 and 26.67 respectively). Among thirty six weed plants tested twenty four weeds (Euphorbia hirta, Ocimum sanctum, Galinsoga parviflora, Euphorbia geniculata, Malvestrum coromandelianum, Achyranthus aspera, Bidens pilosa, Stachytarpeta indica, Acanthospermum hispidum, Xanthium strumarium and others) were able to show symptoms through sap and thrips inoculation. However Highest mean per cent transmission was observed in case of Achyranthes aspera (48.00) through sap and in Galinsoga parviflora (25.00) through thrips.