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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. 2. Yield stability of soybean cultivars representing different eras in U.S. Midsouth. **Significantly different from one (P <= 0.01), *Significantly different from one (P <= 0.05), {perp} Significantly different from one (P <= 0.10).

 


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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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