Studies on virus diseases of groundnut [Arachis hypogaea]
1985
Sopone Wongkaew | Sirinetra Sae-Wien (Khon Kaen Univ., Khon Kaen (Thailand). Faculty of Agriculture)
Survey covered 12 locations in the North and Northeast. Peanut mottle and yellow spot were the most prevalent virus diseases found in almost all locations. Two more viruses, cowpea mild mottle virus (CMMV) and peanut stripe virus (PStV), were discovered. The CMMV infected plants were found scatteringly in only one location in Chiang Mai. The PStv was found abundantly in the experimantal fields at Khon Kaen University, in the experimental fields of the DA at the Northeast Regional Office of Agriculture and Cooperatives, Tha Phra and in few locations near Khon Kaen University. The causal viruses were confirmatively identified by a serological test, including the peanut yellow spot virus (PYSV), the peanut mottle virus (PMV) and the tomato spotted wilt virus (TSWV). It is transmitted by a thrip species but not jassids nor aphids. Many of the tested plant species showed localized necrotic or chlorotic ring-spot on the inoculated leaves. Studies on serological methodology to improve the titer of PMV antiserum were carried out by the pathologists of the DA.ELISA testing system using diseased materials collected from the field was tried successfully. Detailed studies on epidemiology of the PMV revealed a negative correlation between the number of trapped aphis vetors and percentage of infected groundnut. There was an indication that planting corn as an aphid break could reduce the PMV incidence at the early stage, but the difference was not detected when groundnut reached maturity
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Kasetsart University