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.
F0: minimal fluorescence; Fm: maximal fluorescence; Fv: variable fluorescence; GS: stomatal conductance; CI: intercellular CO2 concentration; EVPA: transpiration rate; PN: net photosynthetic rate and PAR: photosynthetically active radiation.
