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Published in Crop Sci 13:505-507 (1973)
© 1973 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Path Coefficient Analysis of Seed Yield Components in Soybeans (Glycine max (L.) Merr.)1

J. P. Pandey and J. H. Torrie2

Seven soybean [Glycine max (L.) Merr.] cultivars grown at three different seeding rates were studied in 1969, 1970, and 1971 to determine the influenee of seeding rate on components of seed yield. A correlation and path coefficient analysls was made to determine the direct and indirect effects of seed components on seed yield. Pods per unit area and seeds per pod had the greatest effect on seed yield in five and four of the nine sets of data, respectively.

The soybean was found to have the abillty to compensate for differences in stand. Compensation was accomplished primarily through number of pods per plant. In general, yield components were negatively associated with each other.

Key Words: Row-spacing

1 Contribution from the Department of Agronomy, Wisconsin Agr. Exp. Station, Madison. Research supported by the College of Agricultural and Life Sciences, University of Wisconsin, Madison. Part of a thesis submitted by the senior author in partial fulfillment of requirements for the Ph.D. degree.

2 Former Research Assistant (now Post Doctoral Research Assistant, Dept. of Genetics and Cell Biology, University of Connecticut, Storrs, Conn.) and Professor of Agronomy, University of Wisconsin, Madison, Wis. 53706.

Received for publication January 3, 1973.




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