These two techniques are referred to as androgenesis, which refers to the development of pollen.
These techniques are universally referred to as the "Pilates" method.
The latter technique is referred to in contrast as the "open voltage" method by some authors.
This is not an exhaustive list and the techniques may be referred to by other names in different styles.
These techniques are collectively referred to as Comet communication.
The technique is referred to by professionals as compositing.
This technique is seldom referred to or used these days.
This technique for multiple root finding is referred to as "deflation".
This technique may also be referred to as groundwater recharging.
This technique is often simply referred to as bioballistics or biolistics.