Abstract
DANDELION yellow mosaic virus was first reported by B. Kassanis in 1944. He then showed that the disease could also affect lettuce. More recently (Ann. App. Biol,34, No. 3, 412–421 ; Sept. 1947) the same described the symptoms and transmission yellow mosaic and of lettuce mosaic. He also reports the isolation of cucumber mosaic m naturally infected lettuce. Lettuce is more susceptible to dandelion yellow mosaic than is its name host. The aphid Myzus persicce transmits lettuce mosaic, but not dandelion yellow mosaic, which is, however, spread by Myzus ornatus, M. ascalonicus and Aulacorihum solani. The common lettuce aphid, Nasonovia ribicola, rather perversely transmitted neither virus. Lettuce mosaic is found in most samples of commercial seed ; but dandelion yellow mosaic is not seed-borne.
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Virus Diseases of Lettuce. Nature 163, 674 (1949). https://doi.org/10.1038/163674a0
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DOI: https://doi.org/10.1038/163674a0