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  • Author or Editor: Keith S. Mayberry x
  • Journal of the American Society for Horticultural Science x
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Lettuce (Lactuca sativa L.) cultivars and breeding lines differed in tolerance to lettuce infectious yellows virus. Correlations of symptom severity in field tests with fresh weight of control plants in a greenhouse test indicate a relationship between symptom severity and the inherent vigor of a cultivar. ‘Climax’ had the mildest symptoms and was the most vigorous cultivar. The level of tolerance exhibited by ‘Climax’ and a few other cultivars will not prevent occurrence of lettuce infectious yellows, but could ameliorate its effect on lettuce production.

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