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Assessments of the resistance of potato cultivars and breeder's clones to external mechanical damage

Published online by Cambridge University Press:  27 March 2009

M. J. De Maine
Affiliation:
Scottish Crop Research Institute, Pentlandfield, Roslin, Midlothian, EH25 9RF
P. D. S. Caligari
Affiliation:
Scottish Crop Research Institute, Pentlandfield, Roslin, Midlothian, EH25 9RF

Summary

Twenty potato cultivars and breeder's clones were subjected to tests of external damage susceptibility at two sites. At one site tubers were, as in usual agricultural practice, lifted by mechanical harvester, and damage indices were subsequently assigned to each clone. At the other site tubers were harvested by hand on two dates. Drop tests were carried out on this material after 1 week in store and also, in the case of the laterdug (maincrop) material, after 3 months.

Ranks based on damage indices were approximately as expected from previous cultivar assessments carried out by other workers. The mean drop test scores showed varying degrees of rank correlation with the damage indices. The highest correlation was with ranks obtained from the drop test on early-harvested material. It was concluded that this was because damage had been inflicted in both cases before skin curing had occurred.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1988

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References

Balls, R. C., Gunn, J. S. & Starling, A. J. (1982). The National Potato Damage Awareness Campaign, 32pp. Oxford: Potato Marketing Board and the Agricultural Development and Advisory Service.Google Scholar
Brown, J. (1984). A new data base computer package for plant breeders. Euphytica 33, 935942.CrossRefGoogle Scholar
M. J., De Maine (1986). A method of testing the resistance of potato cultivars to tuber damage caused by squeezing. Journal of Agricultural Science, Cambridge 106, 255258.Google Scholar
M. J., De Maine (1988). Testing the tuber deformation resistance of tetraploid and dihaploid potatoes. Journal of Agricultural Science, Cambridge 110, 445449.Google Scholar
McCrae, D. C. (1979). Potatoes-Mechanical Handling Damage, 63pp. Report to the marketing policy committee of the Central Council for Agricultural and Horticultural Co-operation, Scottish Institute of Agricultural Engineering.Google Scholar
Potato Marketing Board (1974). Report on a National Damage Survey, 1973. 37 pp. Oxford: Potato Marketing Board.Google Scholar
Robertson, I. M. (1970). Assessment of Damage in Potato Tubers. Departmental Note SIN/60, Scottish Institute of Agricultural Engineering.Google Scholar
Snedecor, G. W. & Cochran, W. G. (1980). Statistical Methods 507 pp. Ames, Iowa: Iowa State University Press.Google Scholar