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Crop Science Abstract -

An Inheritance Study of Tolerance to Atrazine in a Cross of Flax (Linum Usitatissimum L.)1


This article in CS

  1. Vol. 8 No. 4, p. 508-509
    Received: Mar 18, 1968

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  1. V. E. Cornstock and
  2. Robert N. Andersen2



A selection of flax, C. I. 2484, having relatively high tolerance to atrazine (2-chloro-4-ethylamino-6-isopropylamino-s-triazine) was crossed with ‘Koto,’ a susceptible variety. The F3 and backcross populations were tested for tolerance to atrazine. The atrazine tolerance exhibited by C. I. 2484 behaved as a quantitive character.

Heritability (broad sense) of atrazine tolerance in F3 and BC1F2 populations was estimated to be 29 and 34%, respectively. This relatively low heritability indicates that selection for atrazine tolerance in flax populations will be difficult, at least with the procedures and the criterion used in this study.

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