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Two high protein (51.3 to 52.6%), low oil (14.9 15.4%), poorly adapted soybean (Giycine max (L.) Merr.) strains were crossed reciprocally with three well adapted, high yielding soybean strains of average protein (39.3 to 41.2%) and oil (23.5 to 24.0%) contents. Data were corded on maturity date, mature plant weight, seed yield, harvest index, and seed protein and oil percentages of parents and reciprocal F1's. Maturity date, plant weight, seed yield, and seed protein and oil percentages of the Fl's were intermediate to the parental values. Even though the parents used in these crosses differed widely in all characteristics except harvest index, there was no evidence of cytoplasmic effects for any trait evaluated.
Key Words: Cytoplasmic Protein Oil Glycine max
2 Research geneticist, ARS, USDA and professor of agronomy, Purdue Univ., and graduate research assistant, Dept. of Agronomy, Purdue Univ., West Lafayette, IN 47907.
Received for publication June 21, 1976.
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