Micropropagation. Round-leaved sundews, Drosera rotundifolia, being grown from tissue cultures in a petri dish. The jelly in the petri dish is a sterile soil-substitute containing the nutrients needed by the growing plants. These plants are clones grown from tiny fragments or single cells of a parent" plant in a process called micropropagation. Controlled conditions cause the fragments to develop into embryos which produce roots and shoots like normal seedlings. The technique allows quick and easy production of genetically identical plants for agricultural research."