Table 4. Effects of FA on the absorbance of red ink, membrane injury, transpiration rate (E), stomatal conductance (g_s) and the ratio of transpiration rate to stomatal conductance (E/g_s) of cucumber leaves.

Treatments	Absorbance of red ink	membrane injury (%)	E (mmol H2O m−2 s−1)	gs (mol H2O m−2 s−1)	E/gs (×10−3)
0 ppm	0.077 ± 0.007 b	9.46 ± 1.39 b	7.06 ± 0.65 a	0.302 ± 0.057 a	23.7 ± 2.46 b
100 ppm	0.689 ± 0.082 a	25.59 ± 5.86 a	3.49 ± 0.17 b	0.110 ± 0.009 b	31.9 ± 1.26 a

Note: The roots of the cucumber plants were treated with 0 ppm and 100 ppm FA for 9 h. For red ink absorption, the roots were immersed in red ink solution for another 10 h. The data represent the mean ± SD of five replicates. The significant differences (P < 0.05) among the treatments are indicated by different letters.