Susceptibility of potato varieties and seedling selections to corky ringspot
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Differences in the susceptibility of 20 potato varieties and 33 USDA seedling selections to corky ringspot were demonstrated by growing them in infested soil at Hastings, Florida. B294-65, B313-21, B606-3, B721-1, B3013-5, Boone and Delus were free from corky ringspot symptoms, and tuber infection did not exceed 0.9 per cent in B505-75, B936-12, Merrimack, Saco and Pungo in the three to eight years they were tested. Maximum percentages of tuber infection in the most susceptible varieties, Kennebec, Red Pontiac and Sebago, ranged from 55.4 to 74 per cent.
Yield and other characteristics of the corky ringspot-resistant varieties and selections have been compared to determine their suitability for commercial production in the Hastings area. At present, Merrimack. Pungo and Plymouth are recommended for planting in infected fields where corky ringspot susceptible Sebago and Red Pontiac cannot be grown profitably.
KeywordsPotato Variety Susceptible Variety Seedling Selection Infested Soil Tuber Infection
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- 1.Eddins, A. H., E. Q. Proctor and E. West. 1946. Corky ringspot of potatoes in Florida. Amer. Potato Jour. 23: 330–333.Google Scholar