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.
Quantum yield of PSII electron transport of the mutant bas-23 (○) and control 702-3 (•). Chlorophyll a fluorescence was measured in 4-, 9-, 14-, and 42-d-old, dark-adapted plants during a 30-min illumination period (white bars) followed by a subsequent 30-min dark period (black bars).
