M A Y / J U N E 2 0 1 7 16 POTATO GROWER Table 3. Specific gravity, chip color (chip chart and HunterLab value) prior to storage and following 8 weeks at 3.3C (38F) and 5.5C (42F) storage for advancing chip processing selections and cultivars, Hoople, ND, 2016. Specific Gravity1 Field Chip 3.3C Storage 5.5C Storage Clone Chart2 Hunter3 Chart Hunter Chart Hunter 1. ND7519-1 1.0973 3 57.67 8 41.71 3 58.10 2. ND7818-1Y 1.0760 4 54.53 10 36.14 8 46.36 3. ND7799c-1 1.0856 5 56.66 9 40.97 5 57.18 4. ND8304-2 1.0791 3 59.89 9 39.26 7 55.06 5. ND8305-1 1.1052 3 59.71 7 49.28 4 57.76 6. ND8331Cb-2 1.1033 3 60.32 9 40.44 5 57.89 7. ND092018C-2 1.1028 5 54.40 10 31.23 8 44.96 8. ND102631AB-1 1.0877 3 61.18 9 42.69 5 57.53 9. ND102917C-1 1.0951 3 58.56 10 39.44 6 51.80 10. ND102922C-3 1.0800 4 54.59 10 33.84 8 45.49 11. ND113030C-1 1.0986 5 53.47 9 37.03 7 52.36 12. ND113060-1 1.0958 4 57.47 10 31.09 5 56.41 13. ND113289C-1 1.0938 3 59.60 8 45.97 6 57.68 14. ND113386Ab-5 1.0875 5 55.62 9 37.99 7 44.97 15. ND113394CAB-2 1.0949 3 58.02 10 33.80 6 51.83 16. Atlantic 1.1026 7 49.17 10 37.39 8 42.79 17. Dakota Crisp 1.0875 4 56.55 10 33.37 8 45.42 18. Dakota Diamond 1.0863 4 57.27 10 31.27 8 42.23 19. Dakota Pearl 1.0920 4 55.77 8 39.91 7 52.49 20. Ivory Crisp 1.0914 5 57.21 10 32.74 8 49.99 21. Lamoka 1.0952 4 58.40 10 34.53 6 55.59 22. NorValley 1.0866 3 60.86 10 36.11 6 53.65 23. Snowden 1.0811 6 52.81 10 28.59 9 40.13 24. Waneta 1.0870 5 54.62 9 41.46 6 51.95 Mean 1.0913 5 56.82 9 36.96 6 51.23 LSD (α = 0.05) 0.0064 2 4.91 1 6.79 2 6.78 1 Specific gravity determined by weight-in-air, weight-in-water method. 2 Potato Chip Color Reference Standard, Courtesy of B.L. Thomas, B.L. Thomas and Associates, Cincinnati, Ohio, Potato Chip Institute International. 1 = white, 10 = very dark; 4 and below acceptable. 3 HunterLab value – 60 minimum, 70 preferred.