Figure 3

Effects of different treatments on leaf chlorophyll content of tomato seedlings. (A) Chlorophyll a, (B) Chlorophyll b, (C) Chlorophyll a + b, (D) Chlorophyll a/b, NA, 5 mg·kg−1 NA; KF, 60 mg·kg−1 KF; NA + KF, 5 mg·kg−1 NA and 60 mg·kg−1 KF. Different lowercase letters denote statistical differences among treatments of tomato seedlings at the 5% level according to LSD test. Error bars above mean indicate standard error (n = 3).