Fig. 2.
Rate of extension of lupin roots in the first 47 h after coarse sand was pressurized to 15 kPa or left unpressurized (0 kPa). Observations are means ± s.e.
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.