Genetic Progress in Soybean of the U.S. Midsouth
Ali Ustun*,a,
Fred L. Allenb and
Burton C. Englishc
a Blacksea Agric. Res. Institute, P.O. Box 39, Samsun, Turkey
b Univ. of Tennessee, Dep. of Plant and Soil Sciences, P.O. Box 1071, Knoxville, TN 37901
c Univ. of Tennessee, Dep. of Agricultural Economics and Rural Sociology, P.O. Box 1071, Knoxville, TN 37901

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Fig. 1. Yield increase of soybean ancestral lines/cultivars representing different eras in the midsouthern states of the USA. **Significantly different from zero (P 0.01).
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Fig. 3. Changes in protein and oil content of soybean cultivars/ancestral lines representing different eras in U.S. Midsouth. *Significantly different from zero (P 0.05).
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Fig. 4. Changes in plant height of soybean cultivars/ancestral lines representing different eras in U.S. Midsouth. *Significantly different from zero (P 0.05).
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Copyright © 2001 by the Crop Science Society of America.