1. A non-destructive method for determining whether a seed exhibits a trait, the method comprising: providing a plurality of seeds in a sampling device, said sampling device comprising a plurality of stacked trays, each tray containing a plurality of wells, a plurality of the wells containing a seed to be imaged; magnetic resonance imaging of the sampling device to generate at least one magnetic resonance image of said plurality of seeds within the sampling device; analyzing said magnetic resonance image for information indicative of the presence of the trait; and, determining whether each individual seed exhibits said trait based on said analysis.