Summary
Total sugar, reducing sugar, glucose, fructose, and sucrose of scabbed (Streptomyces scabies) and scab-free harvested tubers of several potato cultivars were analysed in four portions (pell and tube flesh separtely, from basal and apical halves), and also in small whole growing tubers.
The peel of scabby harvested tubes had higher reducing sugar (glucose and fructose) contents than that of corresponding scab-free tubers. The sugar contents in the flesh and in small growing tubers did not show significant difference beween the scabbed and scab-free state.
Tubers of scab-susceptible cultivars had more scab and a higher reducing sugar content than those of resistant cultivars. The results indicate that the contents of reducing sugar (glucose and fructose) in tuber peel are positively correlated with scab severity.
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Goto, K. The relationship between common scab severity and reducing sugar contents in the peel of potato tubers. Potato Res 24, 171–176 (1981). https://doi.org/10.1007/BF02356237
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DOI: https://doi.org/10.1007/BF02356237