PJB-2011-416
BIOLOGICAL CHARACTERIZATION OF PAKISTANI ISOLATES OF CUCUMBER MOSAIC CUCUMOVIRUS (CMV)
SHOMAILA IQBAL1, MUHAMMAD ASHFAQ1* AND HUSSAIN SHAH2
Abstract
Cucumber mosaic virus (CMV) can be transmited mechanically as well as biologically through insect vector (Aphis gossypii). CMV has a wide host range particularly it infects Solanaceous crops. Sixty one different hosts were tested against Pakistani isolates of CMV, among them only 33 hosts were found to be infected with CMV upon inoculation while rest remained asymptomatic and showed negative response to ELISA test. Weed flora was also tested as an alternate host of CMV. Datura stramonium, Datura metal, Portulaca olercea (Kulfa), Cyprus rotundus (Deela) and Trianthema pentandra (itsit) showed positive reaction to CMV infection. Different inocula of CMV were applied on test plants/indicator hosts and only Chenopodium quinoa was found to be susceptible to CMV infection while Nicotiana tabacum cv. samsum remained resistant to each tested isolate under controlled conditions.
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