Assessing the Efficacy of Broad-Spectrum Antibiotics in Controlling Bacterial Contamination in the In Vitro Micropropagation of Ginger (Zingiber officinale Rosc)
Table 3
Effects of antibiotic combinations on the in vitro bacterial contamination of ginger (Z. officinale Rosc).
Treatment
mg/L
No. of clean plantlets
No. of killed explants
Mean (SD)
%
Mean (SD)
%
Control
0.00 (0.00)f
0
4.00 (0.00)ab
80
Streptomycin + kanamycin
25
0.00 (0.00)f
0
1.33 (1.15)cd
27
50
0.00 (0.00)f
0
4.00 (1.00)ab
80
100
0.00 (0.00)f
0
3.67 (1.50)ab
73
Streptomycin + gentamicin
25
0.67 (0.57)ef
13
1.00 (1.00)cd
20
50
1.33 (0.57)e
20
1.33 (0.57)cd
27
100
1.67 (1.15)de
33
2.67 (1.52)bc
53
Streptomycin + cefotaxime
25
4.33 (1.15)b
87
0.67 (0.57)cd
13
50
4.33 (0.57)b
87
1.33 (1.15)cd
27
100
4.67 (0.57)a
93
1.67 (1.15)cd
33
Kanamycin + cefotaxime
25
0.00 (0.00)f
0
4.67 (0.57)a
93
50
0.00 (0.00)f
0
2.67 (1.15)bc
53
100
0.00 (0.00)f
0
3.33 (1.52)ab
67
Kanamycin + gentamicin
25
0.00 (0.00)f
0
3.00 (1.00)bc
60
50
0.00 (0.00)f
0
3.33 (0.57)ab
67
100
0.00 (0.00)f
0
3.67 (0.57)ab
73
Cefotaxime + gentamicin
25
2.00 (1.00)de
40
2.00 (1.00)cd
40
50
2.33 (0.57)cd
47
1.67 (1.15)cd
33
100
3.00 (1.00)c
60
2.67 (0.57)bc
53
Means in the same column with different letters are statistically significantly different at ; SD: standard deviation.
