Ong Ching Ang
Abstract
A mosaic disease was observed orr lettuce in Cameron Highlands, Malaysia. The virus was readily sap-transmitted to
Chenupodium amaranticolor, Gomphrena globosa, Lactuca sativa and
Lathyrus odoratus. The following plants:
Brassicae junceae Cassia, occidentalis, Nicotiana glutinosa, N. rustica, N. tabacum, and
Plantago major were not susceptible to the virus. Systemics symptoms were produced on
C. amaranticolor,L . sativa, and
L.odorata. Local lcsions sere produced on leaves of
G. globosa.
Myzus persicae (Sulz.) readily transmitted the virus in a non-persistent manner. From host range,symptomatology and aphid transmission studies, the disease was found to be caused by lettuce mosaic virus.
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