Selection of firm tart cherry cultivars has traditionally been limited by instrumental limitations when measuring cherry texture. Current methods estimate cherry texture by evaluating skin strength and/or turgor pressure rather than pericarp firmness. An attachment to a Kramer Shear Press was designed and built to determine the force required for stone removal. Pericarp strength was measured by placing pitted cherries in a shear/compression cell and measuring shear, compression, and extrusion forces. Preliminary testing indicated stone removal force with shear/compression force may be useful for determining texture of tart cherries in cultivar screening studies.
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Santerre et al. (1991) studied this question.
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