An Inheritance Study of Tolerance to Atrazine in a Cross of Flax (Linum Usitatissimum L.)1
- V. E. Cornstock and
- 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.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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