Abschlussbericht Projekt: „Verminderung der ... - BLE

Table 2 Blackspot index (BSI, %) of potato cultivars in comparison with their discolouration potential (DP, AU 475nm ) and antioxidant activity (FRAP,
mmol kg -1 FM) after harvest, five (5), and eight (8) months of storage of two vegetation periods (2005 and 2006) irrespective of their specific gravity
Vegetation
period
2005
2006
Testing
phase
Harvest
5 months
stored
8 months
stored
Harvest
5 months
stored
8 months
stored
Parameter Afra Adretta Granola Renate Nicola Lolita Marabel Gala
BSI* 63 ± 35.96 a 59 ± 12.07 a 59 ± 23.31 a 26 ± 9.76 b 3 ± 1.97 c 3 ± 0.35 c 2 ± 0.66 c 1 ± 0.82 c
DP 0.11 ± 0.01 bcd 0.21 ± 0.02 a 0.14 ± 0.01 bc 0.16 ± 0.02 ab 0.16 ± 0.01 ab 0.09 ± 0.01 cd 0.06 ± 0.01 d 0.08 ± 0.01 cd
FRAP + 0.91 ± 0.06 c 0.88 ± 0.24 c 0.83 ± 0.08 c 1.41 ± 0.11 a 1.26 ± 0.14 ab 0.75 ± 0.08 c 0.59 ± 0.22 d 1.18 ± 0.28 bc
BSI 33 ± 19.00 b 46 ± 9.57 a 20 ± 10.14 b 4 ± 1.34 c 8 ± 3.34 c 2 ± 0.24 c 3 ± 1.41 c 0 ± 0.02 d
DP* 0.12 ± 0.01 ab 0.15 ± 0.04 a 0.10 ± 0.01 ab 0.11 ± 0.01 ab 0.15 ± 0.04 a 0.09 ± 0.01 b 0.07 ± 0.02 b 0.07 ± 0.00 b
FRAP* 1.11 ± 0.26 ab 1.15 ± 028 ab 1.28 ± 0.13 ab 1.51 ± 0.29 a 1.25 ± 0.13 ab 1.13 ± 0.17 ab 1.13 ± 0.06 ab 0.96 ± 0.34 b
BSI* 59 ± 30.39 ab 70 ± 19.53 a 40 ± 19.29 b 12 ± 7.60 c 18 ± 3.31 c 16 ± 3.79 c 3 ± 1.76 c 3 ± 2.35 c
DP** 0.12 ± 0.01 e 0.33 ± 0.03 a 0.22 ± 0.02 cd 0.31 ± 0.05 ab 0.27 ± 0.02 bc 0.16 ± 0.03 de 0.12 ± 0.01 e 0.15 ± 0.02 e
FRAP** 0.96 ± 0.26 d 1.36 ± 0.18 cd 1.47 ± 0.11 bcd 1.75 ± 0.18 abc 1.74 ± 0.20 ab 1.98 ± 0.39 a 1.87 ± 0.14 ab 1.72 ± 0.03 abc
BSI 49 ± 29.24 b 84 ± 20.13 a 29 ± 15.20 b 19 ± 3.88 c 11 ± 3.91 c 6 ± 2.79 d 8 ± 1.12 c 16 ± 1.75 c
DP + 0.11 ± 0.01 b 0.31 ± 0.07 a 0.16 ± 0.01 b 0.13 ± 0.02 b 0.14 ± 0.01 b 0.09 ± 0.01 b 0.08 ± 0.02 b 0.11± 0.01 b
FRAP* 1.11 ± 0.42 bc 1.92 ± 0.15 a 1.00 ± 0.08 b 1.35 ± 0.09 b 1.05 ± 0.06 bc 1.25 ± 0.17 bc 0.82 ± 0.18 c 1.14 ± 0.17 bc
BSI* 44 ± 15.06 b 96 ± 4.59 a 80 ± 19.57 a 26 ± 8.44 bc 15 ± 6.90 cd 22 ± 7.09 bcd 13 ± 0.37 d 9 ± 1.84 d
DP 0.12 ± 0.01 b 0.27 ± 0.03 a 0.16 ± 0.02 b 0.17 ± 0.01 b 0.14 ± 0.01 b 0.16 ± 0.03 b 0.08 ± 0.01 d 0.09 ± 0.02 cd
FRAP* 0.79 ± 0.08 d 1.01 ± 0.19 cd 1.04 ± 0.10 cd 1.79 ± 0.08 a 1.12 ± 0.27 c 1.30 ± 0.22 bc 1.26 ± 0.16 bc 1.61 ± 0.10 ab
BSI 29 ± 22.74 b 93 ± 5.84 a 24 ± 15.28 b 6 ± 4.11 cd 4 ± 1.84 d 18 ± 13.51 bc 7 ± 3.77 cd 4 ± 2.14 d
DP* 0.16 ± 0.02 b 0.36 ± 0.04 a 0.27 ± 0.03 ab 0.26 ± 0.08 b 0.21 ± 0.02 b 0.20 ± 0.00 b 0.17 ± 0.01 b 0.19 ± 0.03 b
FRAP 0.75 ± 0.54 b 0.95 ± 0.08 b 0.90 ± 0.08 b 1.77 ± 0.31 a 0.77 ± 0.15 b 1.11 ± 0.07 b 0.92 ± 0.22 b 1.14 ± 0.17 b
a,b,c different letters indicate significant differences between cultivars by Tukey tests (p ≤ 0.05) within single parameters and testing phase; * significant differences between testing phases within single parameters
within one vegetation period by Tukey tests (p ≤ 0.05); + significant differences between vegetation periods within single parameters by Tukey tests (p ≤ 0.05)
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