Bean showing radicle sprouting
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Botanical Nerd Word: Radicle

Radicle: The part of the plant embryo which will develop into the primary root.*

This adzuki bean (Vigna angularis) is just starting to sprout. The radicle is the first part of the plant to emerge from the seed.

*Harris, J.G., Harris, M.W. (2001). Plant identification terminology: An illustrated glossary (2nd ed.). Spring Lake: Spring Lake Publishing.

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