A P R I L 2 0 1 8 16 POTATO GROWER Table 3. Quality attributes, including specific gravity, internal disorders (hollow heart and brown center) and blackspot and shatter bruise potential for advancing fresh market selections and cultivars, Crystal, ND, 2017. The fresh market trial was planted on May 12, vine killed on September 8, and harvested with a single-row Grimme harvester on September 30, 2017. The replicated plots were 20 feet long, with a 12-inch with-in row spacing, and 36 inches between rows. Clone Tubers per Plant Specific Gravity1 % Hollow Heart2 Black- spot Bruise3 Shatter Bruise4 1. ND4659-5R 7.0 1.0890 0 3.1 3.3 2. ND6002-1R 4.4 1.0864 0 2.8 3.3 3. ND6961B-21PY 5.5 1.0925 0 2.0 2.4 4. ND7132-1R 4.1 1.0825 4 2.7 2.7 5. ND7834-2P 4.9 1.0959 0 3.0 2.9 6. ND7982-1R 12.3 1.0990 0 3.4 2.5 7. ND081557C-1P 10.9 1.1212 0 1.9 2.4 8. ND081571-2R 9.9 1.0882 0 2.5 2.1 9. ND081571-3R 10.3 1.1028 0 2.2 2.9 10. ND091890-1RR 8.3 1.0889 0 2.2 3.1 11. ND102663B-3R 12.4 1.0927 0 1.8 3.0 12. ND102775C-5RR 10.1 1.0946 1 2.6 3.0 13. ND113089B-2RY 7.1 1.0853 0 3.1 3.3 14. ND113091B-2RY 15.3 1.0864 0 3.3 2.5 15. ND113207-1R 7.5 1.0760 0 3.2 3.0 16. ND1212-1RSY 8.4 1.0888 0 3.0 2.3 17. ND1232B-1RY 8.4 1.0943 0 2.8 2.3 18. ND1243-1PY 9.4 1.0968 6 2.4 2.7 19. ND12128-1R 9.3 1.1008 0 3.1 2.4 20. ND12244Y-1R 12.0 1.0959 0 2.8 2.8 21. All Blue 8.1 1.0935 0 3.3 2.5 22. Chieftain 6.8 1.0896 0 2.8 2.6 23. Dakota Jewel 5.6 1.0930 0 2.9 4.0 24. Dakota Rose 6.7 1.0797 0 2.7 2.9 25. Dakota Ruby 10.2 1.0970 1 2.1 2.7 26. Red LaSoda 5.3 1.0895 1 2.4 2.9 27. Red Norland 7.0 1.0817 0 2.7 2.6 28. Red Pontiac 5.8 1.0840 3 2.5 3.0 29. Sangre 5.6 1.0869 1 1.3 2.3 30. Yukon Gold 5.6 1.0954 1 2.9 3.5 Mean 8.1 1.0916 1 2.6 2.8 LSD (=0.05) 1.9 0.0057 3 0.8 0.7 1 Determined using weight-in-air, weight-in-water method. 2 Hollow heart includes brown center. 3 Blackspot bruise determined by the abrasive peel method, scale 1-5, 1=none, 5=severe. 4 Shatter bruise is evaluated using a bruising chamber with digger chain link baffles. Tubers are stored at 45F prior bruising. Shatter bruises are rated on a scale of 1-5, with 1 = none and 5 = many and severe.