Abstract
Water retention ability of excised wheat leaves and postanthesis stress induced by chemical desiccation were assessed in the nursery to study a wide range of breeding material’s cuticular resistance against water loss and translocation ability of stored stem reserves. Using the measured water potential and relative water content data, pressure-volume curves were drawn and osmotic potential and water saturation deficit at zero turgor were calculated. Genotypes performing well in the field tests, had lower water potential (osmotic potential) values and reached the zero turgor point at a higher water saturation deficit. Correlation between the ranking of entries in the different tests, however, was low.
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