Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Effects of exogenous spd on the activities of the antioxidant enzymes SOD (a), POD (b), CAT (c), APX (d) and GR(e) in lettuce seedlings under high-temperature stress. The vertical bars represent the SDs of the means (n = 3). The different letters indicate significant differences at P < .05 according to Duncan’s multiple range test
