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.
Light response changes in ETRI (A), ETRII (B), and ETRI – ETRII (C) for leaves from sun- and shade-grown tobacco plants measured at 24°C and 400 μmol mol-1 CO2 concentration. Values are means ± SE (n = 6). Significant differences between the sun and shade leaves were examined (T-test, P < 0.05). Asterisks indicate significant differences in the sun leaves compared to the shade leaves.
