Abstract
Leakage from field-grown wheat was investigated during two seasons differing considerably in their rainfall patterns. For all solutes analyzed, these losses were low from non-senescing plant parts, increased after the onset of senescence and became maximal in fully senesced (dry, brown) organs. The cumulative losses of potassium by leakage in the rain were 65% of the content at anthesis for the flag leaf and 95% for the third leaf from the top, while these relative values were lower for magnesium (50 to 80%) and calcium (around 55%) and extremely low for sodium (<10%). The differences between potassium and sodium may be due to a different compartmentation on the tissue level or on the subcellular level. It became evident that for certain nutrients (e.g. potassium or magnesium) leakage in the rain may represent a major loss from senescing leaves and can be a relevant flux in maturing wheat.
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© 1999 Kluwer Academic Publishers
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Debrunner, N., Von Lerber, F., Feller, U. (1999). Solute losses from various shoot parts of field-grown wheat by leakage in the rain. In: Anac, D., Martin-PrÉvel, P. (eds) Improved Crop Quality by Nutrient Management. Developments in Plant and Soil Sciences, vol 86. Springer, Dordrecht. https://doi.org/10.1007/978-0-585-37449-9_30
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DOI: https://doi.org/10.1007/978-0-585-37449-9_30
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