Table 5: Effects of salicylic acid on photosynthetic pigments of cowpea (ART 98-12) exposed to arsenic stress.
Arsenic (mg/L) |
Bioregulators (mg/L) |
Chl a(mg/g/fw) |
Chl b(mg/g/fw) |
Car (mg/g/fw) |
0 |
0 |
7.84 ± 0.04c |
5.05 ± 0.03b |
2.04 ± 0.04b |
250 |
0 |
0.43 ± 0.02l |
0.20 ± 0.01m |
0.08 ± 0.00k |
500 |
0 |
0.20 ± 0.01m |
0.09 ± 0.00n |
0.02 ± 0.00l |
0 |
SA 150 |
9.31 ± 0.02a |
5.41 ± 0.02a |
2.19 ± 0.00a |
250 |
SA 150 |
6.77 ± 0.01e |
1.93 ± 0.03f |
0.82 ± 0.03g |
500 |
SA 150 |
4.77 ± 0.02h |
1.68 ± 0.01h |
0.94 ± 0.03f |
0 |
SA 75 |
7.99 ± 0.01bc |
4.41 ± 0.05c |
1.27 ± 0.04d |
250 |
SA 75 |
5.19 ± 0.01g |
1.85 ± 0.02g |
0.20 ± 0.01j |
500 |
SA75 |
3.20 ± 0.00j |
1.31 ± 0.01i |
0.93 ± 0.03f |
Chl a: Chlorophyll a
Chl b: Chloro[hyll b
Car: Carotenoid
Means with different letter are significantly different from each other