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Inhibition and recovery of cucumber roots given multiple treatments of ferulic acid in nutrient culture

Ferulic acid, a frequently cited allelopathic agent, inhibited photosynthesis, leaf expansion, and root elongation of cucumber seedlings grown in aerated nutrient cultures in a growth chamber. Other effects were a reduction in the proportion of radioactivity fixed by photosynthesis translocated to roots, a stimulation in secondary root initiation, and an increase in root-shoot ratios. Inhibition of leaf expansion and root elongation induced by multiple ferulic acid treatments was rapidly lost once ferulic acid was removed from the root environment. The changes in general root morphology, i.e., average root length and root number, associated with ferulic acid treatments, were partially reversed or not affected when ferulic acid was removed from the root environment.

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1. Department of Botany, North Carolina State University, 27695-7612, Raleigh, North Carolina

   Udo Blum & Joanne Rebbeck

1. Udo Blum
2. Joanne Rebbeck

Paper No. 11411 of the Journal Series of the North Carolina Agricultural Research Service, Raleigh, North Carolina 27695-7601. The use of trade names in this publication does not imply endorsement by the North Carolina Agricultural Research Service of the products named, nor criticism of similar ones not mentioned.

Blum, U., Rebbeck, J. Inhibition and recovery of cucumber roots given multiple treatments of ferulic acid in nutrient culture. J Chem Ecol 15, 917–928 (1989). https://doi.org/10.1007/BF01015187

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• Received: 21 January 1988

• Accepted: 29 March 1988

• Issue Date: March 1989

• DOI: https://doi.org/10.1007/BF01015187

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