3.3. PAL and PPO enzymes activity and total phenols content
Anthurium cut flowers treated with 2 mM SA showed the
higher accumulation oftotal phenols than control flowers (P < 0.05;
Table 3). Also, anthurium cut flowers treated with 2 mM SA showed
the higher PAL enzyme activity (P < 0.01) and lower PPO enzyme
activity (P < 0.01) during the storage at 4 ◦C (Table 3).
3.4. Antioxidant system activity
As shown in Table 4, anthurium cut flowers treated with 2 mM
SA during storage at 4 ◦C exhibited significantly higher antioxidant
enzymes CAT (P < 0.05), SOD (P < 0.01), APX (P < 0.05) and GR
(P < 0.01) activity (Table 4). Also, anthurium cut flowers treated
with 2 mM SA exhibited significantly higher DPPH scavenging
activity during storage at 4 ◦C (P < 0.01; Table 4).
3.5. Proline and glycine betaine contents and RWC
The proline content in the anthurium cut flowers increased during
storage at 4 ◦C. SA treatment with 2 mM enhanced the increase
in proline content (P < 0.01; Table 5). Postharvest SA treated
anthurium cut flowers exhibited significantly higher GB content
than control flowers during storage at 4 ◦C (P < 0.01; Table 5). In
fact, in flowers treated with 2 mM SA, GB content was higher than
control flowers (Table 5). During storage at 4 ◦C, both control and SA
treated flowers accumulated GB; however, flowers treated with SA
exhibited significantly higher GB content than control flowers. As
shown in Table 4, The RWC of control flowers was decreased during
storage at 4 ◦C, while 2 mM SA treatment retarded this decline
(P < 0.01; Table 5). SA treated flowers showed significantly higher
RWC than control flowers (Table 5).