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Effects of sulfate and nitrate on K + uptake and growth of wheat and cucumber
Author(s) -
Zsoldos Ferenc,
Haunold Ernst,
Herger Peter,
Vasfaegyi Ágnes
Publication year - 1990
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1990.tb00062.x
Subject(s) - cucumis , shoot , dry matter , nitrogen , nitrate , sulfate , nutrient , chemistry , horticulture , botany , agronomy , biology , organic chemistry
The uptake of K + ion was studied in the roots of wheat ( Triuicum aestivum L. cv. GK Szeged) and cucumber ( Cucumis sativus L. cv. Budai csemege) seedlings grown in nutrient solution under nitrogen and sulfate stress conditions. Seedlings pretreated with 1 or 10 m M NaNO 3 , absorbed more K + than those treated with 0.1 m M NaNO 3 . However, the posteffect of NaNO 3 was considerably influenced by the Na 2 SO 4 , treatment. The results suggest that, at least partly, a feed‐back regulation of K + uptake may occur. However, due to the high Na + contents of the roots, a Na + effect in this process cannot be excluded. The growth and dry matter yields of the roots and shoots were strongly influenced by the SO 2− / 4 and NO − / 3 supply of the plants. Appreciable differences were experienced between wheat and cucumber seedlings. The optimum SO 2− / 4 concentration of the growth solution for maximal growth varied considerably between the species, and was also different for the roots and the shoots in a given species.