Physiological and Biochemical Changes in Brassica juncea Plants under Cd-Induced Stress

Table 4

Effect of Cd metal on photosynthetic rate, vapour pressure deficit, intercellular CO₂ concentration, and intrinsic mesophyll rate of 30-day-old B.  juncea plants.

Treatments	Photosynthetic rate; (mmol CO2 m^−2s^−1)	Vapour pressure deficit; (kPa)	Intercellular CO2 concentration; (ppm)	Intrinsic mesophyll rate; (mmol CO2 m^−3)
0.0 mM	5.42 ± 0.24^a	0.45 ± 0.005^a	427.07 ± 0.72^a	0.012 ± 0.001^a
0.2 mM	3.91 ± 0.37^b	0.43 ± 0.006^a	422.48 ± 1.68^ab	0.009 ± 0.001^ab
0.4 mM	4.35 ± 0.21^ab	0.34 ± 0.004^c	417.44 ± 1.67^bc	0.011 ± 0.001^ab
0.6 mM	3.37 ± 0.3^b	0.4 ± 0.003^b	412.37 ± 1.26^c	0.008 ± 0.0005^b