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Adventitious root [ Botany ]

Dictionary of botanic terminology - index of names

     
   A root in an unusual position, such as on a stem or leaf.  
     
Adventitious root  are roots in an unusual place, that originates from stem or leaf tissue rather than from another root, often where a branch or other part contacts soil or damp material. Adventitious roots are not ordinarily expected, and often they are the result of stress or injury. A plant's normal growth comes from meristematic tissue, but adventitious growth comes from non-meristematic tissue. Adventitious roots are indeed very common in vascular plants. A plant can not be reproduced from cuttings or layering unless adventitious roots develop.

 


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