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Selection is the activity of selecting individuals the best plants based on the desired character. Selection will be effective if the right selection character is used. The aims of this study to determine agronomic characters that can be used as character selection in the cross-bred potato line population through heritability, genetic diversity, genotypic correlation, and selection of these lines. The experiment was conducted at the Green House, Sumber Brantas Village, Batu City, East Java. The materials used were 30 lines of potatoes as a result of the LJPRSD1 x AP-4 varieties crossing. The experimental design used in this study was a completely randomized design (CRD) with 3 replications. Observed agronomic characters were plant height, stem diameter, number of leaves, tuber diameter, number of bulbs, length of bulbs, weight per-bulb, starch content, and glucose. The result of heritability in almost all characters had a high value, except for the character of stem diameter and tuber length. Genotypic diversity in the character of stem diameter, bulb diameter, bulb length are low, while other characters are rather-low. Significant genotypic correlations between characters, except starch-content, to the weight per-bulb character. Agronomic characters that can be used as character selection are plant height, tuber diameter, and number of tubers.