Studies on lettuce mosaic virus resistance in commercial lettuce cultivars |
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| Authors: | D. G. A. WALKEY C. M. WARD KATHLEEN PHELPS |
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| Affiliation: | National Vegetable Research Station, Wellesbourne, Warwick, CV35 9EF, UK |
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| Abstract: | The response to infection with lettuce mosaic virus (LMV) of 16 lettuce cultivars, known to possess the Momo gene for resistance to LMV, was studied in field trials over a 2-year period. Some cultivars developed negligible mosaic symptoms following virus inoculation and had a low virus content as measured by ELISA, while others had more severe symptoms and a higher virus content. Resistant cultivars differed significantly in the effect of LMV upon yield and the correlation between cultivar rankings for yield depression and symptom severity was low. |
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