3.6.2. Keywords Related to Plants

If this keyword analysis is done by parts of the plant (see Table 4), which shows which parts of the plant have been most investigated. It should be noted that the number of documents is less than the sum of the individual keywords, since a publication contains more than one keyword. It has been obtained that the parts of the plant most studied in order of importance have been the value expressed in relative terms: Leaf-Leaves (33%), Root-Roots (22%), Seed (12%), Stem (10%), Fruit (10%), Bark (7%), and Flower (6%). The table also shows which plant families have been most used for the study of that part of the plant.


**Table 4.** Main keywords related to plant parts and plant families studied.

To give an idea of the most studied plant families, see Table 5. Although the first two are the same family, it has been left separately to indicate the indexing preferences of the two main affiliations that study them. This is also the situation with Compositae that correspond to the family of Asteraceae. This table lists for each plant family the main institution working on its study. However, it is curious that even if a country is a leader in certain studies related to plant families, most often it is found that the institution leading the issue is not from the country leading the study on that plant family. This helps to establish a certain amount of global leadership on the side of the institutions.


**Table 5.** Plant families and Institutions.
