An Evaluation of Several Chemical Tests as Possible Selection Measure of Winter Hardiness in Wheat.
L.V. Gusta, D.B. Fowler and N.J. Tyler

ABSTRACT

Ten chemical characters and crown LT₅₀s were measured on 14 cold-hardened cultivars of winter wheat (Triticum aestivum L. em. Thell.) to determine their usefulness in winter survival prediction tests. Differences among genotypes with a range of cold hardiness potential (LT₅₀ -13°C to -20°C) were significant for 6 to 10 characters evaluated. Crown LT₅₀ was the best prediction of field survival (FSI). Cell sap viscosity, total crown nitrogen, crown ethanol, insoluble nitrogen, and crown uronic acid were highly correlated with both FSI and LT₅₀. Proline, pH and ATP were not significantly correlated with either FSI or LT₅₀.

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