SUMMARY Meristem tips were cultured from Lolium multiflorum plants infected with ryegrass mosaic virus (RMV). Meristem tips within the size range O'2‐fi mm long were cultured on media with or without 2 ,4‐D at 1 mg/1. The plants that regenerated in culture showed no symptoms over a 10 month period and no RMV particles were observed by electron microscopy. It was concluded that RMV had been eliminated. The method should prove useful in eliminating the virus from desirable genotypes used as parent material for seed production.
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Phillip J. Dale (1977) studied this question.
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