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Interaction between Fusarium oxysporum f. sp. conglutinans and Turnip Mosaic Virus in Brassica campestris var. chinensis Seedlings. Andres A. Reyes, Research Scientist, Research Station, Canada Department of Agriculture, Vineland Station, Ontario, Canada; Kailash C. Chadha, Former Postdoctorate Fellow, Research Station, Canada Department of Agriculture, Vineland Station, Ontario, Canada, Present address: Department of Chemistry, Trent University, Peterborough, Ontario, Canada. Phytopathology 62:1424-1428. Accepted for publication 7 June 1972. DOI: 10.1094/Phyto-62-1424.

The severity of cabbage yellows symptoms induced in Brassica campestris var. chinensis by Fusarium oxysporum f. sp. conglutinans was increased when plants were infected simultaneously with turnip mosaic virus. Fungus-infected plants inoculated with the virus were more severely yellowed and weighed less than plants infected with the fungus alone, regardless of the interval between fungus and virus inoculations. Similarly, mosaic-infected plants when inoculated with the fungus were more severely stunted than plants infected with the virus alone. Interaction was greatest at a soil temperature of 28 C.