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The probability of identity (PI) and the PIsib (taking into account related individuals in the cherry collection), based on the diminished PI value of each locus. Evaluation based on the analysis of 383 unique sweet cherry genotypes using 16 SSR. PI = Probability of Identity (2 * [Sum (pi^2)^2]-Sum(pi)^4); PIsibs = Probability of Identity for Sibs at a Locus = 0.25 + [0.5 * Sum(pi^2) ] + [0.5 * Sum(pi^2)^2] − [0.25 * Sum(pi)^4].
