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.
Kinetics of the fluorescence yield F/F0 in a noninfiltrated leaf. F0, dark-adapted fluorescence yield. Same leaf as in Fig. 1. Curve 1, the leaf is submitted to repetitive cycles of 1.7 s of light (kiPSII ∼ 250 s−1) and 6 min of dark. The fluorescence yield is constant between 0.7- and 1.7-s illumination. Curve 2, after a 2-s dark period after the 1.7-s illumination.
