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A survey for the incidence of Hop stunt viroid (HSVd) infection in China was conducted using dot-blot hybridization. Out of 553 tested samples, 127 samples of stone fruits (apricot, peach, plum and almond), grapevine and hop were positive for HSVd, giving a mean infection rate of 23 %. Phylogenetic analysis revealed that most of the HSVd variants isolated from stone fruits, grapevine and hop were...
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