Summary
Microtubers of potato cultivar Kennebec were stored for two months at 2 or 8°C and sampled at selected intervals for the determination of glucose, fructose, sucrose and sprout weight. The aim of this experiment was to determine whether these microtubers show the same response to storage temperature with respect to sweetening as field grown tubers. During storage at 2 °C, reducing sugars and sucrose increased rapidly to a concentration of over 1.0 and 0.7 g/100 g fresh weight, respectively. In contrast, in tubers kept at 8°C, only a relatively slight increase in reducing sugar concentration to 0.3 g/100 g fresh weight was observed and sucrose concentration remained virtually the same.
References
Brown, J., G. R. Mackay, H. Bain, D. W. Griffith & M. J. Allison, 1990. The processing potential of tubers of the cultivated potato,Solanum tuberosum L., after storage at low temperatures. 2. Sugar concentration.Potato Research 33: 219–227.
Burton, W. G., 1989. The Potato. Longman Scientific & Technical, Harlow, p. 365–522.
Claassen, P. A. M., M. A. W. Budde, H. J. de Ruyter, M. H. van Calker & A. van Es, 1991. Potential role of pyrophosphate: fructose 6 — phosphate phosphotransferase in carbohydrate metabolism of cold stored tubers ofSolanum tuberosum cv. Bintje.Plant Physiology 95: 1243–1249.
Colon, L. T., L. Sijpkes & K. J. Hartmans, 1989. The cold stability ofSolanum goniocalyx andS. phureja can be transferred to adapted diploid and tetraploidS. tuberosum germplasma. In: K. M. Louwes, H. A. J. M. Toussaint & L. M. W. Dellaert (Eds), Parental line breeding and selection in potato breeding. PUDOC, Wageningen, p. 76–79.
Estrada, R., P. Tovar & J. H. Dodds, 1986. Induction ofin vitro tubers in a broad range of potato genotypes.Plant Cell, Tissue and Organ Culture 7: 3–10.
Hasegawa, S., 1965. Studies on chlorogenic acid in potatoes: effect of cold storage on changes in its content and in its inhibitory action on phosphorylase. Ph.D. Thesis, Ann Arbor, Michigan, p. 45.
Murashige, T. & F. Skoog, 1962. A revised medium for rapid growth and bioassays with tobacco tissue culture.Physiologia Plantarum 15: 473–497.
Pressey, R., 1969. Role of invertase in the accumulation of sugars in cold stored potatoes.American Potato Journal 46: 291–297.
Richardson, D. L., H. V. Davies, H. A. Ross & G. R. Mackay, 1990. Invertase activity and its relation to hexose accumulation in potato tubers.Journal of Experimental Botany 41: 95–99.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Claassen, P.A.M., Van Calker, M.H. & Marinus, J. Accumulation of sugars in microtubers of potato node cuttings (cv. Kennebec) during cold storage. Potato Res 35, 191–194 (1992). https://doi.org/10.1007/BF02357613
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02357613