A parameterised model of maize stem cross-sectional morphology

Stalk lodging, or failure of the stalk structure, is a serious problem in production maize (corn). Addressing this requires an understanding parameters that influence lodging resistance. Computational modelling powerful tool for purpose, but current methods have limited throughput and do not provide ability to modify individual geometric features. A parameterised model has potential overcome these limitations. The purposes study were (a) develop cross-section could accurately simulate physical response multiple loading cases, (b) use rigorously investigate relationships between cross-sectional morphology predictive accuracy. Principal component analysis was utilised reveal underlying patterns which used as model. series approximated cross-sections created represented various levels fidelity. true modelled axial tension/compression, bending, transverse compression, torsion. For each case, accuracy calculated. sensitivity also performed quantify parameters. simplest model, elliptical consisting just three parameters: major diameter, minor rind thickness, predicted structural stiffness all four cases. approach can be parameterise any desired level fidelity, applied other plant species.