Abstract
Three varieties, characterised by the possession of varying degrees of resistance to lodging, were grown in a Latin square with a view to determining if any character could be found which would serve as a stable criterion of resistance to lodging. Observations were made and analysed for all those morphological characters associated with strength of straw. The characters examined were: tillering, length of straw, lengths of internodes, diameter of fifth internode, thickness of culm wall, number of vascular bundles, width of lignified tissue in a cross-section, and thickness of sclerenchyma cell walls.