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  1. No Access

    Article

    Maintenance of sorghum (sorghum bicolor, poaceae) landrace diversity by farmers’ selection in Ethiopia

    We quantitatively examined the relationships between Sorghum landrace diversity at the field level and environmental factors and farmers’ selection practices in north Shewa and south Welo regions of Ethiopia. ...

    A. Teshome, L. Fahrig, J. K. Torrance, J. D. Lambert, T. J. Arnason… in Economic Botany (1999)

  2. No Access

    Article

    Sorghum [Sorghum bicolor (L.) Moench] landrace variation and classification in North Shewa and South Welo, Ethiopia

    Fourteen phenotypic characters were chosen for the purpose of obtaining taxonomic evidence on the resemblances of 177 accessions of sorghum from North Shewa and South Welo regions of Ethiopia. Canonical Discri...

    A. Teshome, B.R. Baum, L. Fahrig, J.K. Torrance, T.J. Arnason, J.D. Lambert in Euphytica (1997)

  3. Article

    Mutagenic Effectiveness of Ethyl Methanesulphonate and Methyl Methanesulphonate in Barley

    THE monofunctional alkylating agent ethyl methanesulphonate (EMS) has been shown to be capable of producing mutations in more than one-half of the spikes of treated barley plants1,2. Smaller mutation frequencies ...

    J. L. MINOCHA, T. J. ARNASON in Nature (1962)

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  4. Article

    Dr. J. Unrau

    T. J. ARNASON, L. P. V. JOHNSON, W. J. WHITE, A. WILKES in Nature (1961)

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    Article

    Induction of Mutation by High-Energy X-Radiation Produced by a 23-MeV. Betatron

    WITHIN a wide range of energies (12.4 kV.–2.2 MeV.) X-rays are all about equally efficient in inducing mutation1. The frequency of induced mutations is directly proportional to the dose measured in roentgens1. It...

    HULDA REGEHR, T. J. ARNASON, H. E. JOHNS in Nature (1950)