involvement of beet western yellows virus, cauliflower mosaic virus, and turnip mosaic virus in internal disorders of stored white cabbage.abstract experiments over two growing seasons clearly showed that turnip mosaic virus (tumv) infection was associated with internal necrosis (sunken necrotic spots 5 to 10 mm in diameter) and beet western yellows virus (bwyv) infection was associated with collapse of leaf tissue at the margins (tipburn) in heads of stored white cabbage (brassica oleracea var. capitata). virtually no tipburn was seen in cv. polinius, whereas cv. impala was affected severely. internal necrotic spots were seen in b ...200218942959
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