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This article in CS

  1. Vol. 9 No. 5, p. 575-576
     
    Received: Dec 12, 1968


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doi:10.2135/cropsci1969.0011183X000900050017x

Effect of Planting Rate and Genotypic Frequency on Yield and Seed Size in Mixtures of Two Wheat Varieties1

  1. S. R. Chapman,
  2. R. W. Allard and
  3. Julian Adams2

Abstract

Abstract

Yield of mixtures of the wheat (Triticum aestivum L.) varieties Baart 46’ and Ramona’ grown in row plantings varied with the frequency of the two varieties and showed significant positive deviations from predictions based on the weighted mean performance of components. This frequency dependent effect was itself dependent on density. The seed size of mixtures showed no such frequency dependent effects although seed size increased significantly at lower population densities

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