Table 4.

Physiological response of X. chrysanthus at 6 and 12 months after treatment with PBZ and KNO3.

Treatment combinationPhotosynthetic rate (μmol m−2s−1)Transpiration rate (mmol m−2s−1)Stomatal conductance (mol m−2s−1)
PBZ (g L−1)KNO3 (g)6 months after treatment12 months after treatment6 months after treatment12 months after treatment6 months after treatment12 months after treatment
006.56 ± 1.07 a6.02 ± 0.93 a3.04 ± 0.80 a2.72 ± 0.56 a0.14 ± 0.03 a0.14 ± 0.07 a
01005.28 ± 0.60 b5.40 ± 0.74 b2.18 ± 0.59 b1.90 ± 0.37 b0.11 ± 0.08 a0.12 ± 0.06 a
02005.50 ± 0.69 b5.07 ± 0.76 b2.01 ± 0.53 b1.95 ± 0.51 b0.11 ± 0.08 a0.11 ± 0.07 a
0.12503.82 ± 0.61 cde3.53 ± 0.63 c0.78 ± 0.12 c0.76 ± 0.14 c0.05 ± 0.02 b0.05 ± 0.02 b
0.1251003.86 ± 0.62 cd3.58 ± 0.90 c0.84 ± 0.11 c0.76 ± 0.15 c0.05 ± 0.02 b0.03 ± 0.01 b
0.1252003.92 ± 0.93 cd3.73 ± 0.93 c0.77 ± 0.13 c0.74 ± 0.16 c0.04 ± 0.02 b0.03 ± 0.01 b
0.2503.25 ± 1.17 de3.23 ± 0.82 c0.76 ± 0.13 c0.72 ± 0.14 c0.05 ± 0.03 b0.04 ± 0.03 b
0.251003.55 ± 0.90 de3.31 ± 0.55 c0.76 ± 0.12 c0.74 ± 0.13 c0.02 ± 0.01 b0.03 ± 0.01 b
0.252003.42 ± 0.58 de3.27 ± 0.38 c0.75 ± 0.13 c0.74 ± 0.11 c0.02 ± 0.01 b0.03 ± 0.02 b
  • Means followed by the same letter(s) within column do not differ by DMRT (2-way ANOVA, p < 0.05); Mean ± standard deviation; n = 27/treatment.