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Abstract
Berry weight was correlated with the total weight of true potato seed (TPS) per berry and with the number of TPS per berry. 100-TPS weight was weakly correlated with berry weight and with TPS weight per berry. A negative correlation was found between 100-TPS weight and the number of TPS/berry. The degree of negative association between 100-TPS weight and TPS number per berry increased substantially as berry weight decreased in four of the five progenies investigated. Mean 100-TPS weights from large and from small berries were not significantly different for all progenies. Since seed weight is considered the measure of TPS sowing value, it is suggested that culling small berries is not an appropriate method to improve the quality of a given TPS lot.