Osmotic components and properties associated with genotypic differences in osmoregulation in wheat
1992
Morgan, J.M. (New South Wales Agriculture, Tamworth (Australia). Agricultural Research Centre)
Sap samples were collected from leaves of wheat plants of breeding lines having high or low osmoregulation during a period of increasing water stress. The level of osmoregulation was expressed as the solute accumulation between full and zero turgor. The lines, confirming a previously observed single gene effect, showed either very high or very low solute accumulation. High osmoregulation was due very largely (78 percent) to potassium accumulation, with amino acids the only other significant contributor. Various methods of measuring osmotic potential and effects on the calculation of solute accumulation are discussed.
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