Final answer:
Accessions are regrown to obtain fresh seed or to increase an existing supply. They are collections of seeds or plants held in gene banks or seed banks to preserve genetic diversity in crop plants, which is important for crop improvement and food security.
Step-by-step explanation:
In agriculture, accessions are regrown to obtain fresh seed or to increase an existing supply. Accessions refer to a collection of seeds or plants held in gene banks or seed banks. These collections are crucial for preserving genetic diversity in crop plants, which is important for crop improvement and ensuring food security.
By regrowing accessions, scientists and farmers can harvest fresh seeds, which can be used for various purposes such as conducting research, breeding new crop varieties, or replenishing seed stocks. Regrowth also helps maintain the genetic diversity of crop plants, preventing the loss of valuable traits and ensuring our continued supply of food.