Table 4: Effects of salicylic acid on photosynthetic pigments of cowpea(Ife brown) exposed to arsenic stress.
Arsenic (mg/L) |
Bioregulator (mg/L) |
Chl a(mg/g/fw) |
Chl b(mg/g/fw) |
Car(mg/g/fw) |
0 |
0 |
11.02 ± 0.02d |
6.76 ± 0.06cd |
2.00 ± 0.02e |
250 |
0 |
4.12 ± 0.01l |
1.27 ± 0.02gh |
0.32 ± 0.01m |
500 |
0 |
3.03 ± 0.04m |
0.98 ± 0.01h |
0.20 ± 0.00n |
0 |
SA 150 |
12.53 ± 0.02b |
7.96 ± 0.03ab |
3.05 ± 0.04b |
250 |
SA 150 |
11.09 ± 0.02d |
7.22 ± 0.01bc |
2.31 ± 0.00c |
500 |
SA 150 |
9.07 ± 0.03g |
5.74 ± 1.44de |
1.03 ± 0.00h |
0 |
SA 75 |
11.20 ± 0.01c |
7.11 ± 0.01bc |
2.99 ± 0.01b |
250 |
SA 75 |
10.00 ± 0.05e |
6.68 ± 0.02cd |
2.15 ± 0.02d |
500 |
SA 75 |
7.21 ± 0.01i |
3.89 ± 0.01f |
0.52 ± 0.01k |
Chl a: Chlorophyll a
Chl b: Chloro[hyll b
Car: Carotenoid
Means with different letter are significantly different from each other