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.
Effect of cold stratification on GA3 (left) and ABA (right) content in seeds with different root lengths. Mean ± s.e. (A, E) Seeds with 1·5 cm root length; (B, F) seeds with 3·0 cm root length; (C, G) seeds with 4·5 cm root length; (D, H) seeds with 6·0 cm root length.
