Summary and Conclusions
The specific gravity of three concentric zones within tubers of 19 potato varieties was determined over the two-year period 1956–1957. During this study, a clear pattern emerged. In varieties where specific gravity of the entire tuber was high there was a large difference in spcific gravity between zone three (pith) and the two outer zones. In varieties with low specific gravity this difference was comparatively small. There was generally little difference in specific gravity between zones one and two. Specific gravity of zone three was relatively uniform between varieties.
Similar content being viewed by others
Literature Cited
Coudon, H. and L. Bussard. 1897. Recherches sur la pomme de terre alimentaire. Ann. Sci. Agron. 2nd. Ser. 1: 250–291.
East, E. M. 1908. The study of the factors influencing the improvement of the potato. 111. Agr. Exp. Sta. Bull. 127.
Glynnc, M. D. and V. G. Jackson. 1919. The distribution of dry matter and nitrogen in the potato tuber. Variety, King Edward. Jour. Agr. Sci. 9: 237–258.
Goldthwaite, N. E. 1925. Variation in composition of Colorado potato. Colo. Agr. Exp Sta. Bull. 296.
Johnson, T. and C. Boyle. 19119. Observations on the industrial and nutritive value of potato in Ireland. Jour. Dept. Agr. Ire. 19: 416–429.
Thiessen, M. J. 1947. The culinary qualities and nutritive values of potatoes grown upon dry and irrigated land. Wyom. Agr. Exp. Sta. Bull. 280.
Whittenberger, R. T. and G. C. Nutting. 1950. Observations on sloughing of potatoes. Food Res. 15:331–337.
Author information
Authors and Affiliations
Additional information
Journal Article No. 2249, Michigan Agricultural Experiment Station, East Lansing, Mich.
Rights and permissions
About this article
Cite this article
Sharma, M.K., Isleib, D.R. & Dexter, S.T. Specific gravity of different zones within potato tubers. American Potato Journal 35, 784–788 (1958). https://doi.org/10.1007/BF02911245
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02911245