Abstract
The effects of sulphur dioxide (SO2) and nitrogen dioxide (NO2), singly and in combination, on the shoot growth of four potato cultivars differing in maturity classification (Solanum tuberosum L. ‘Superior,’ ‘Norchip,’ ‘Kennebec, rs ‘Russet Burbank’) were determined in controlled conditions. Plants were exposed to 0.11 ppm SO2 and/or 0.11 ppm NO2 for 24 hours a day for 7 or 14 days. There were no significant differences in leaf growth of ‘Superior’ or ‘Norchip’ plants at 7 or 14 days. Stem dry weight was significantly reduced in ‘Superior’ only after 14 days in the mixture. ‘Kennebec’ and ‘Russet Burbank’ plants had significantly less leaf area, leaf fresh weight, and leaf water content after 14 days of exposure to the mixture, but there was no significant change in dry weight. Specific leaf weight was significantly increased in the mixture treated plants of both cultivars. The two earlier maturing cultivars, ‘Superior’ and ‘Norchip,’ were less sensitive to the SO2 and NO2 combination than the two later maturing cultivars, ‘Kennebec’ and ‘Russet Burbank’.
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Petitte, J.M., Ormrod, D.P. Effects of sulphur dioxide and nitrogen dioxide on fourSolanum tuberosum L. cultivars. American Potato Journal 61, 319–329 (1984). https://doi.org/10.1007/BF02854533
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DOI: https://doi.org/10.1007/BF02854533