UV-B Radiation Impacts Shoot Tissue Pigment Composition in Allium fistulosum L. Cultigens
Table 2
Mean valuesa for shoot tissue zeaxanthin, violaxanthin, and antheraxanthin (mg/100 g fresh mass) for Allium fistulosum L. cultigens grown under supplemental UV-B (313 nm) light [7.0 mol·m−2·s−2 (2.68 W·m−2); UV-B] or UV-filtered (control) light in a glasshouse in Knoxville, TN, USA (35°96′N Lat.).
Cultigen
Zeaxanthin
Violaxanthin
Antheraxanthin
UV-B
Control
Pr >
UV-B
Control
Pr >
UV-B
Control
Pr >
mg/100 g fresh mass
Deep Purple
0.08 ± 0.02
0.10 ± 0.03
ns
1.25 ± 0.36
0.88 ± 0.42
ns
1.07 ± 0.31
0.78 ± 0.23
ns
Evergreen Hardy White
0.10 ± 0.03
0.07 ± 0.02
ns
1.73 ± 0.61
1.20 ± 0.25
ns
1.03 ± 0.18
0.78 ± 0.14
ns
Feast
0.11 ± 0.01
0.07 ± 0.01
P = 0.010
1.35 ± 0.82
0.66 ± 0.58
ns
1.15 ± 0.27
0.92 ± 0.19
ns
GA-C 76
0.12 ± 0.02
0.08 ± 0.02
ns
2.04 ± 0.19
1.34 ± 0.20
P = 0.002
1.92 ± 0.65
1.27 ± 0.47
ns
Ishikura Improved F1
0.10 ± 0.05
0.09 ± 0.02
ns
1.75 ± 0.94
1.10 ± 0.38
ns
0.81 ± 0.50
0.59 ± 0.13
ns
Improved Beltsville Bunching
0.16 ± 0.02
0.15 ± 0.04
ns
1.62 ± 0.54
1.25 ± 0.14
ns
0.99 ± 0.38
0.72 ± 0.21
ns
Jionji Negi
0.12 ± 0.06
0.13 ± 0.03
ns
1.54 ± 0.25
1.51 ± 0.35
ns
1.20 ± 0.25
0.78 ± 0.50
ns
Long White Bunching
0.12 ± 0.03
0.11 ± 0.03
ns
0.89 ± 0.18
0.81 ± 0.42
ns
0.82 ± 0.13
0.89 ± 0.14
ns
Parade
0.10 ± 0.02
0.11 ± 0.02
ns
1.23 ± 0.50
1.02 ± 0.61
ns
0.86 ± 0.16
0.79 ± 0.24
ns
Performer
0.09 ± 0.02
0.10 ± 0.02
ns
0.59 ± 0.52
1.45 ± 0.60
ns
0.87 ± 0.06
0.85 ± 0.32
ns
Pesoenyj
0.12 ± 0.03
0.19 ± 0.06
ns
1.93 ± 0.33
2.35 ± 0.82
ns
1.38 ± 0.30
1.35 ± 0.52
ns
Shounan
0.13 ± 0.05
0.09 ± 0.01
ns
1.87 ± 0.81
1.04 ± 0.36
ns
1.18 ± 0.40
0.63 ± 0.30
ns
White Spear
0.08 ± 0.02
0.08 ± 0.03
ns
1.00 ± 0.60
0.77 ± 0.47
ns
0.74 ± 0.13
0.60 ± 0.09
ns
Zhang Qui Da Cong
0.11 ± 0.04
0.12 ± 0.02
ns
1.29 ± 0.48
1.30 ± 0.41
ns
0.81 ± 0.30
0.74 ± 0.06
ns
274254-05GI
0.13 ± 0.04
0.15 ± 0.03
ns
1.64 ± 0.42
1.27 ± 0.52
ns
0.79 ± 0.14
0.71 ± 0.33
ns
G 30393-06GI
0.13 ± 0.03
0.08 ± 0.02
P = 0.016
0.60 ± 0.51
0.50 ± 0.43
ns
1.07 ± 0.35
0.67 ± 0.14
ns
ns
0.04
0.74
0.70
0.44
0.44
aComposition of plant samples from 4 replications ± standard deviation. bSignificance based on paired Student’s t-test among treatments; ns: not significant. cLSD for differences between cultivar means .
