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.
B deficiency symptoms in the control tobacco line SR1 (left) and transgenic tobacco (S11), supplied with B as a foliar application to three mature leaves. Symptoms exhibited in SR1 include flower bud abortion, deformation, reduced elongation, and chlorosis of young leaves. The control tobacco line A4 exhibited symptoms similar to those observed in SR1 (not shown). No symptoms of B deficiency were observed in growing tissues of transgenic tobacco line S11.
