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Published in Crop Sci 7:590-592 (1967)
© 1967 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Phenotypic Stability in Soybean Populations1

R. R. Smith, D. E. Byth, B. E. Caldwell and 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.

Key Words: Glycine max (L.) Merrill • phenotypic stability

1 Joint contribution from Crops Research Division, Agricultural Research Service, U.S. Department of Agriculture, as No. 46l of the U.S. Regional Soybean Laboratory, and the Iowa Agricultural and Home Economics Experiment Station, Ames, Iowa, and as Journal Paper No. 5503, Project No. 1179.

2 Geneticist, Crops Research Division, Madison, Wis. (formerly Research Associate, Department of Agronomy, Iowa State University); Research Scientist, C.S,I.R.O., Division of Tropical Pastures, Brisbane, Australia; Agronomist, Crops Research Division, ARS, USDA, Beltsville, Md.; and Director of Research, Peterson Seed Company, Waterloo, Iowa, and Savage, Minn. (formerly Agronomist, Crops Research Division, and Professor, Iowa State University, Ames, Iowa).

Received for publication February 4, 1967.


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 Agron. J.Home page
P. Pedersen and J. G. Lauer
Soybean Agronomic Response to Management Systems in the Upper Midwest
Agron. J., September 1, 2003; 95(5): 1146 - 1151.
[Abstract] [Full Text] [PDF]


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