In a harvest not every grain has the same weight. Some are lighter, some are heavier. In case of source limitation, often a bimodal frequency distribution function is seen with a peak to the left for unfilled grains (also called unfilled spikelets). I developed a mathematical model that predicts the frequency distribution. The model simulates a larger peak for the unfilled grains when source limitation and/or sterility occurs. A paper for this model is in preparation. An Excell implementation of the grain weight distribution model can be downloaded from this website.
Frequency distribution of grain weights
Yield of grains within a specific weight range (e.g. only grains heavier than 15mg)
Grain weight distribution modelling is completely new. This is a first effort to develop a model and there has been limited experimental research. However, we foresee the tollowing applications:
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