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Ethylene inhibitors enhance in vitro root formation on faba bean shoots regenerated on medium containing thidiazuron

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Abstract

The possible involvement of ethylene in in vitrorooting of faba bean (Vicia faba L.) shootsregenerated on medium containing thidiazuron wasinvestigated. The effects of the ethylene precursor1-aminocyclopropane-1-carboxylic acid (ACC) and threeethylene inhibitors, silver nitrate (AgNO3),acetyl salicylic acid (ASA) and cobalt chloride(CoCl2) on root formation were tested in vitrousing TDZ-induced shoots of faba bean accession 760.ACC inhibited root formation. In contrast, ethyleneinhibitors promoted root formation, AgNO3 at theappropriate concentrations enhanced root emergence andincreased root number per shoot, root growth rate, androot length. Both CoCl2 and ASA at theappropriate concentrations increased rootingefficiency. These promotive effects may result from areduction in ethylene concentration or inhibition ofethylene action. The results offer a new approach toimprove the rooting efficiency of TDZ-induced shootsof faba bean and possibly of other plant species.

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Authors and Affiliations

  1. Laboratory of Plant Genetics and Breeding, Graduate School of Bioagricultural Science, Nagoya University, Chikusa, Nagoya, 464-8601, Japan

    Mutasim Mohamed Khalafalla

  2. Laboratory of Plant Genetics and Breeding, Graduate School of Bioagricultural Science, Nagoya University, Chikusa, Nagoya, 464-8601, Japan

    Kazumi Hattori

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  1. Mutasim Mohamed Khalafalla
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  2. Kazumi Hattori
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Correspondence to Mutasim Mohamed Khalafalla.

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Khalafalla, M.M., Hattori, K. Ethylene inhibitors enhance in vitro root formation on faba bean shoots regenerated on medium containing thidiazuron. Plant Growth Regulation 32, 59–63 (2000). https://doi.org/10.1023/A:1006305123585

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  • DOI: https://doi.org/10.1023/A:1006305123585

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