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.
Midday PPFD (A), Midday (B) and predawn (c) Fv/Fm ratios and of leaves of G. speciosum under different growth irradiances on sunny days. Each value is the mean from 6 different leaves of 6 different plants measured from three sunny days. Vertical bars represent standard errors. Means with same letter above the bars are not statistically different (p > 0.05) as determined by Tukey’s test
