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Crop Science Abstract -

Effects of Border Row Competition on Strain Performance and Genetic Variance in Soybeans1


This article in CS

  1. Vol. 10 No. 5, p. 605-606
    Received: May 22, 1970

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  1. J. C. Thorne and
  2. W. R. Fehr2



We evaluated the performance of six soybean (Glycine max (L.) Merr.) strains in three border row competition regimes. Strains ✕ competition regime interaction was significant for yield, but the component of variance was small compared to the component for among strains. Estimates of genetic variance for yield and canopy width were inflated when intergenotypic competition was present. Smaller estimates of genetic variance were observed in intergenotypic competition regimes than in pure stand for maturity and lodging. Competition response for yield was related to maturity, but other factors also were involved.

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