Accumulation of mineral elements in tuber periderm of potato cultivars differing in susceptibility to common scab |
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Authors: | V Kri?t?fek J Divi? I Dostálková J Kal?ík |
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Institution: | (1) Institute of Soil Biology, Academy of Sciences of the Czech Republic, Na Sádkách 7, 370 05 České Budějovice, Czech Republic;(2) Faculty of Agriculture, University of South Bohemia, Studentská 13, 370 05 České Budějovice, Czech Republic;(3) Facult of Biological Sciences, University of South Bohemia, Branišovská 31, 370 05 České Budějovice, Czech Republic |
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Abstract: | Summary Concentrations of Ca, P, K, Mg, Al, Fe, Mn, Cu and Zn were determined in healthy tuber peelings of cultivars less (Karin,
Santé and Symfonia) and more (Agria, Désirée and Tomensa) susceptible to common scab when grown at two sites that differed
in the level of scab incidence. The accumulation of some elements was significantly influenced by site, year, cultivar, maturity
and the age of tuber periderm. At both sites, Ca and P in periderm tissue declined but Mg increased during the growing season.
The Ca/P ratios in tuber periderm of all cultivars greatly decreased 83 days after planting. Concentrations of mineral elements
measured at harvest may not reflect conditions present during the infection period, and consequently may not be related to
scab incidence or severity. |
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Keywords: | actinomycetes resistance scab incidence Solanum tuberosum L Streptomyces scabies |
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