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Crop Science Abstract -

Phenotypic Stability in Soybean Populations1


This article in CS

  1. Vol. 7 No. 6, p. 590-592
    Received: Feb 4, 1967

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  1. R. R. Smith,
  2. D. E. Byth,
  3. B. E. Caldwell and
  4. C. R. Weber2



Phenotypic stability of various soybean (Glycine max (L.) Merrill) genotypes to a series of environments investigated by computing, for each genotype, a linear regression of yield onto the mean of all genotypes for each environment. Genotypes expressing above average stability were influenced less by changing environmental conditions. Low deviations from regression tended to be associated with regression coefficients below 1.0.

A positive association was observed between mean homogeneous daughter line and heterogeneous maternal line performance. However, heterogeneous, homozygous lines responded less radically to environmental changes than corresponding homogeneous, homozygous lines.

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