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A method of testing the resistance of potato cultivars to tuber damage caused by squeezing

Published online by Cambridge University Press:  27 March 2009

M. J. De Maine
M. J. De Maine
Affiliation:
Scottish Crop Research Institute, Pentlandfield, Roslin, Midlothian, EH25 9RF
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Summary

Tubers from nine cultivars grown in four plantings over 3 years at two sites in Scotland were tested for resistance to cracking by squeezing between two flat surfaces. The force was applied by a lever to which a steel plate was fixed, pressing the tuber against a wooden base. The weight on the lever was recorded when wet hair-line cracks appeared on the tuber surface.

There were significant differences between cultivars from the same planting. The rank positions of some cultivars were relatively stable but others differed widely between plantings. The grouping of cultivars into the upper, middle or lower parts of the range for squeezing resistance was similar to that for resistance to external damage based on Potato Marketing Board farm surveys. The test could be used to help breeders identify genotypes highly susceptible to external mechanical damage. If combined with tests of resistance to other types of mechanical abuse common in the bulk handling of tubers a more accurate estimate of damage resistance on the farm should be possible.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 106 , Issue 2 , April 1986 , pp. 255 - 258
Copyright
Copyright © Cambridge University Press 1986

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References

REFERENCES

Balls, R. C., Gunn, J. S. & Starling, A. J. (1982). The National Potato Damage Awareness Campaign 32 pp. Oxford: Potato Marketing Board and the Agricultural Development and Advisory Service.Google Scholar
Blight, D. P. & Hamilton, A. J. (1974). Varietal susceptibility to damage in potatoes. Potato Research 17, 261–270.CrossRefGoogle Scholar
Hughes, J. C. (1980 a). Potatoes. 1. Factors affecting susceptibility to damage. Span 23, 65–67.Google Scholar
Hughes, J. C. (1980 b). Role of tuber properties in determining susceptibility of potatoes to damage. Annals of Applied Biology 96, 344–345.Google Scholar
McRae, D. C. (1979). Potatoes – Mechanical Handling Damage, 63 pp. (Report to the marketing policy committee of the Central Council for Agricultural and Horticultural Co-operation.) Scottish Institute of Agricultural Engineering.Google Scholar
McRae, D. C., Fleming, J., Glasby, C. A. & Melrose, H. (1984). A comparison between crushing tests, drop tests, and field tests as a means of ranking varietal susceptibility to potato damage. Departmental Note SIN/392, 32 pp. Scottish Institute of Agricultural Engineering (unpublished).Google Scholar
National Institute of Agricultural Botany (1981). Recommended varieties of potatoe 1981/82. Farmer's Leaflet Number 3, 12 pp. Cambridge: National Institute of Agricultural Botany.Google Scholar
Potato Marketing Board (1974). Report on a National Damage Survey, 1973, 37 pp. Oxford: Potato Marketing Board.Google Scholar
Schipper, P. A. (1971). Measurement of blackspot susceptibility of potatoes. American Potato Journal 48, 71–81.CrossRefGoogle Scholar
Umaebus, M. (1978). Report of survey of methods for screening susceptibility to mechanical tuber damage. 7th Triennial Conference of the European Association for Potato Research, Warsaw, pp. 117–118.Google Scholar