Response of commercially important papaya cultivars to papaya ringspot virus in eastern U.P. conditions
2005
and K. SHUKLA, VIMLA SINGH, G.P. RAO*
unknown. Papaya ringspot disease caused by papaya ringspot potyvirus (PRSV) was found to be widespread in the eastern U.P., restricting commercial cultivation of the crop. The virus was reported to cause about 70% yield loss in this region with 95% disease incidence. Fourteen varieties of papaya (Carica papaya L.) were tested to identify sources of resistance, if any. However, none of the tested varieties was resistant to PRSV but variety Harichaap showed only 10% incidence with an average yield loss of 10.38% suggesting its better performance over others.
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