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.
The effect of phosphorus and ethylene inhibition on the position of root hair initiation as measured by the distance between the quiescent center (Q.C.) to the location of the first root hair, and the distance between the first root hair and the point where root hairs began to mature. Treatments as for Figure 1. Bars are means from six roots ± se.
