UV-B Radiation Impacts Shoot Tissue Pigment Composition in Allium fistulosum L. Cultigens
Table 5
Mean valuesa for shoot tissue chlorophyll a, chlorophyll b, and total chlorophyll (chlorophyll a + chlorophyll b) (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
Chlorophyll a
Chlorophyll b
Total chlorophyll
UV-B
Control
Pr >
UV-B
Control
Pr >
UV-B
Control
Pr >
mg/100 g fresh mass
Deep Purple
27.8 ± 22.1
25.3 ± 5.6
ns
20.6 ± 4.4
16.9 ± 2.4
ns
48.3 ± 25.6
42.1 ± 7.5
ns
Evergreen Hardy White
31.4 ± 21.1
16.5 ± 3.2
ns
25.5 ± 5.1
18.2 ± 0.7
ns
56.9 ± 26.1
34.7 ± 3.5
ns
Feast
59.6 ± 20.3
19.0 ± 10.5
P = 0.012
27.3 ± 4.0
17.7 ± 1.9
P = 0.005
86.8 ± 24.3
36.7 ± 11.0
P = 0.009
GA-C 76
47.0 ± 16.4
17.2 ± 10.6
ns
29.2 ± 7.1
18.1 ± 1.3
P = 0.021
76.2 ± 23.3
35.4 ± 11.5
P = 0.020
Ishikura Improved F1
49.9 ± 53.6
23.1 ± 5.9
ns
25.6 ± 11.6
17.6 ± 4.7
ns
74.5 ± 65.1
40.7 ± 2.6
ns
Improved Beltsville Bunching
23.9 ± 28.4
20.6 ± 8.9
ns
18.5 ± 7.6
15.8 ± 1.0
ns
42.4 ± 36.0
36.1 ± 9.8
ns
Jionji Negi
48.3 ± 23.4
47.2 ± 18.9
ns
25.5 ± 3.1
20.9 ± 4.8
ns
73.8 ± 26.0
68.0 ± 23.4
ns
Long White Bunching
36.9 ± 6.6
37.2 ± 7.4
ns
19.7 ± 2.8
17.1 ± 2.7
ns
56.5 ± 9.2
54.3 ± 6.3
ns
Parade
38.6 ± 13.2
44.4 ± 18.8
ns
21.2 ± 4.1
19.9 ± 4.4
ns
59.8 ± 17.2
64.3 ± 23.0
ns
Performer
36.8 ± 3.1
49.6 ± 31.9
ns
23.0 ± 2.1
20.9 ± 7.1
ns
59.8 ± 4.8
70.5 ± 38.9
ns
Pesoenyj
36.8 ± 10.2
63.3 ± 36.9
ns
26.3 ± 2.4
29.7 ± 8.7
ns
26.3 ± 2.4
93.0 ± 45.6
ns
Shounan
44.3 ± 24.9
20.6 ± 19.1
ns
24.3 ± 8.3
16.6 ± 7.6
ns
68.6 ± 32.6
37.2 ± 26.7
ns
White Spear
30.4 ± 9.9
18.2 ± 9.6
ns
20.8 ± 1.9
17.8 ± 1.0
P = 0.033
51.2 ± 10.7
35.4 ± 8.9
ns
Zhang Qui Da Cong
25.3 ± 18.3
27.3 ± 13.5
ns
20.4 ± 7.4
19.3 ± 4.2
ns
45.6 ± 25.6
47.1 ± 17.6
ns
274254-05GI
36.6 ± 23.1
40.0 ± 18.1
ns
18.9 ± 5.3
18.7 ± 4.9
ns
55.5 ± 28.3
58.6 ± 21.5
ns
G 30393-06GI
39.8 ± 11.3
22.6 ± 13.8
ns
21.3 ± 4.1
17.0 ± 3.7
ns
61.1 ± 15.1
39.6 ± 16.0
ns
ns
26.0
ns
6.8
ns
31.6
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 .
