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Published in Crop Sci 13:201-203 (1973)
© 1973 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Heritability of Lowest Pod Height in Soybeans1

R. J. Martin and J. R. Wilcox2

The feasibility of breeding for increased height of the lowest pod and associations between pod height and other agronomic characteristics of soybeans [Glycine max (L.) Merr.] was studied in progenies of high podding determinate strains crossed with normal podding indeterminate varieties. Heritability estimates for lowest pod height in two crosses were slightly greater than those for seed yield and seed size in the F2 generation and considerably higher than values for seed yield in the F3 generation. Heritability estimates for pod height in the third cross, although lower than in the other two crosses, were higher than estimates for seed yield in both the F2 and F3 generations.

Correlation coefficients for height of the lowest pod with date of flowering and maturity date indicated that the higher the height of the first pod, the later these plants flowered and matured. The lack of a close association of pod height with seed yield indicated that selections could be made for increased height of the lowest pod without affecting seed yield.

Key Words: Harvest losses • Height of first flower • Date of flowering • Indeterminate plants • Determinate plants • Plant resistance

1 Cooperative Investigations of the Agricultural Research Service, USDA, and the Purdue University Agricultural Experiment Station. Journal paper no. 4768 of the Purdue University Agricultural Experiment Station and publication no. 748 of the U. S. Regional Soybean Laboratory. Part of a thesis submitted by the senior author in partial fulfillment of the requirements of the M.S. degree.

2 Research Assistant and Research Geneticist, ARS, USDA, and Instructor and Professor of Agronomy, respectively, Purdue University, West Lafayette, Ind. 47907.

Received for publication June 21, 1972.




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