A General Model for Describing the Ovate Leaf Shape

Many plant species produce ovate leaves, but there is no general parametric model for describing this shape. Here, we used two empirical nonlinear equations, the beta and Lobry–Rosso–Flandrois (LRF) their modified forms (referred to as Mbeta MLRF equations convenience), generate bilaterally symmetrical curves along x-axis form leaf shapes. In order evaluate which of these four best describes shape, 14 leaves from 7 Neocinnamomum (Lauraceae) 72 Chimonanthus praecox (Calycanthaceae). Using AIC adjusted root mean square error compare fitted results, shapes better than unmodified equations. However, equation provided overall fit. As parameters represent length, maximum width, distance apex point associated with width length axis, findings are potentially valuable studying influence environmental factors on differences in shape among closely related shapes, extent symmetrical. This first work temperature-dependent developmental describe have been employed, previous studies lacked similar models. addition, prior seldom attempted real Our bridges gap between theoretical models indices that cannot predict profiles.