Table 3. Photosynthetic pigment content in grape seedling leaves.

MT concentration (μmol/L)	Chlorophyll a (mg/g)	Chlorophyll b (mg/g)	Total chlorophyll (mg/g)	Chlorophyll a/b ratio	Carotenoids (mg/g)
0	0.688±0.019d	0.223±0.004c	0.911±0.023d	3.086	0.161±0.006d
50	0.749±0.024c	0.264±0.003b	1.013±0.026c	2.840	0.178±0.007bc
100	0.817±0.016b	0.282±0.005a	1.099±0.021b	2.892	0.184±0.005ab
150	0.865±0.030a	0.289±0.008a	1.154±0.038a	2.999	0.190±0.006a
200	0.785±0.027bc	0.262±0.008b	1.047±0.034bc	2.991	0.171±0.004cd

Values are means (±SE) of three replicate pots. Different lowercase letters within a column indicate significant differences based on one-way analysis of variance in SPSS 22.0 followed by the least significant differences (p ≤ 0.05).