FIGURE 1.
The visualization of highly frequently occurring terms extracted from articles with the topic of “clonal plants” indexed by Thomson Routers. This knowledge map was done using CiteSpace.
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.