Phon kra thop chak kan khao tham lai khong chua virus bai dang khit nai thualisong bang sai phan.
1988
Sopone Wongkaew | Sumitra Kantrong
Five groundnut cultivars (Tainan 9, SK 38, Lampang, Moket, and RCM 387) were assessed for yield loss due to peanut stripe virus infection under a field condition at Khon Kaen. The plants were mechanically inoculated with the ring spot variant of PStV propagated in KC-84R cowpea at two weeks after emergence using a high pressure spray-gun. After three weeks, 40-50 % of the plants in the inoculated plots became infected, but none was detected in the uninoculated counterparts. Natural virus spread started to occur at four weeks, and when the plants reached 80 days the numbers of infected plants in the inoculated and uninoculated plots were not different. The virus appeared to reduce pod yields of SK 38, Moket, and Lampang to a certain extent but had no effect on Tainan 9 and RCM 387 except it increased the number of shriveled seeds in Tainan 9 considerably. Among the five cultivars tested, RCM 387 showed the highest level of tolerance to PStV infection as its seed quality and pod yield were not affected.
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