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This list of terms is both a useful reference, and a fun way of browsing through the terminology in order to learn more about plant species, plant breeding and agricultural techniques. The original text was adapted from The Amateur Plant Breeder's Handbook by Dr. Raoul A. Robinson. A free download of the handbook is available from As with any page in the Open Breeding Wiki, these glossary listings can be edited by anyone. If you notice any terms that still need to be added, or definitions that can be expanded, please sign up for an account and help make this resource even better.