Table 3.

Total reducing sugar levels (mmol/kg dry weight) in 20 varieties of potatoes grown in the UK (mean ± standard deviation, n = 3).

Variety	2-Months storage	6-Months storage	pa
Hermes	21.0 ± 2.28	42.6 ± 14.56	NS
Lady Claire	9.72 ± 3.22	8.67 ± 3.22	NS
Lady Rosetta	10.8 ± 2.39	29.7 ± 2.67	∗∗∗
Saturna	15.6 ± 2.39	13.6 ± 1.28	NS
Verdi	3.72 ± 0.72	5.17 ± 1.22	NS
Challenger	31.5 ± 10.4	35.2 ± 7.00	NS
Daisy	31.5 ± 7.00	58.4 ± 6.06	∗∗
Desiree	69.7 ± 9.61	80.2 ± 15.9	NS
Fontane	20.8 ± 4.39	38.9 ± 25.1	NS
Innovator	45.3 ± 9.06	84.22 ± 6.72	∗∗
King Edward	42.8 ± 16.8	65.33 ± 6.67	NS
Lady Blanca	70.2 ± 12.9	101 ± 14.3	NS
Lady Olympia	46.1 ± 11.0	39.4 ± 9.67	NS
Maris Piper	60.9 ± 13.6	42.28 ± 8.94	NS
Markies	10.3 ± 4.39	18.3 ± 0.61	∗
Pentland Dell	150 ± 20.8	122 ± 19.4	NS
Ramos	18.6 ± 4.50	37.61 ± 0.72	∗∗
Russet Burbank	41.9 ± 5.67	46.3 ± 7.17	NS
Umatilla Russet	53.3 ± 4.22	46.9 ± 24.6	NS
Harmony	452 ± 55.7	572 ± 66.4	NS

^aSignificant effect of storage time on reducing sugar concentration (^∗p < 0.05, ^∗∗p < 0.01 and ^∗∗∗p < 0.001; NS, not significant).