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.
Concentration of B in excised necrotic patches of leaves from barley plants with different tolerance to B toxicity. Each histogram represents the mean ± se B concentration in four extracts from four plants each containing six to 10 patches.
