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.
Changes with time of (A) leaf 6 area, (B) absolute leaf 6 expansion rate and (C) relative leaf 6 expansion rate of Ler plants grown in expt 4 under the day lengths of 20 h (open symbols) or 10 h (closed symbols). Means with 95 % confidence intervals are given, n = 5.
