biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 38:617, 1996 | DOI: 10.1007/BF02890620

Endogenous indole-3-acetic acid during adventitious root formation inPopulus £canadensis Moench.

T. Doleželová1, V. Psota1, Z. Feiglová1
1 Institute of Landscape Ecology, Academy of Sciences of the Czech Republic, Brno, Czech Republic

Indole-3-butyric acid (IBA), phenylacetic acid (PAA) and naphthaleneacetic acid (NAA) were applied at a concentration of 10-4 mol dm-3 to stem cutting bases ofPopulus x canadensis Moench. During adventitious root formation, the content of indole-3-acetic acid (IAA) in cutting bases was estimated using the fluorimetric method. In the control variant, a rapid increase in endogenous IAA appeared after 24-h cultivation followed by gradual decrease during the following days. In contrast, the variants treated with IBA, PAA, and especially NAA exhibited firstly a decrease in endogenous IAA content and only afterwards an increase, reaching a maximum 48 h after excision. As root regeneration proceeded gradually, a decrease in the level of endogenous IAA occurred in all treatments. The first adventitious roots appeared in all treatments after 216-h cultivation.

Keywords: indole-3-butyric acid; naphthaleneacetic acid; phenylacetic acid

Received: December 11, 1995; Accepted: February 20, 1996; Published: December 1, 1996  Show citation

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Doleželová, T., Psota, V., & Feiglová, Z. (1996). Endogenous indole-3-acetic acid during adventitious root formation inPopulus £canadensis Moench. Biologia plantarum, 38(4), 617. doi: 10.1007/BF02890620
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