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Ethylene formation by germinating, Drechslera graminea — Infected barley (Hordeum sativum) grains: A simple test for fungicides

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Abstract

Grains of barley (Hordeum sativum L.); infected with the parasitic, systemic fungus Drechslera graminea, produce more ethylen than uninfected controls. Treatment of infected grains with mercury-free fungicides yields a differentiated suppression of the ethylene evolution 7 d after the beginning of germination. Suppression of visible symptoms (chlorotic stripes on leaves) appearing six to eight weeks after germination of infected, untreated seeds correlates with the decrease in ethylene formation after treatment with fungicides. The gaschromatographic ethylene determination thus allows for an early and reliable (significance higher than 99.9%) differentiation of fungicidal activities against the barley stripe disease.

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Abbreviations

ACC:

I-aminocyclopropane-1-carbonic acid

CD:

critical difference

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Authors and Affiliations

  1. Institut für Phytopatholgie, Freising-Weihenstephan, Technische Universität München, Arcisstr. 21, D-8000, München 2, Federal Republic of Germany

    H. F. Walther & G. M. Hoffmann

  2. Institut für Botanik und Mikrobiologie, Technische Universität München, Arcisstr. 21, D-8000, München 2, Federal Republic of Germany

    E. F. Elstner

Authors
  1. H. F. Walther
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  2. G. M. Hoffmann
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  3. E. F. Elstner
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Walther, H.F., Hoffmann, G.M. & Elstner, E.F. Ethylene formation by germinating, Drechslera graminea — Infected barley (Hordeum sativum) grains: A simple test for fungicides. Planta 151, 251–255 (1981). https://doi.org/10.1007/BF00395177

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  • DOI: https://doi.org/10.1007/BF00395177

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