Genetic Progress in Soybean of the U.S. Midsouth

• DOI: 10.2135/cropsci2001.414993x
• Publication Date: 2010-07-29T20:01:26Z
• Authors: Ali Ustun; Fred L. Allen; Burton C. English
• Keywords: Germ plasm; Plant Breeding

Yield increase in crops has occurred due to plant breeding and improved production management techniques. The amount of soybean the southern USA not been determined. objective this study was evaluate genetic improvements yield other important agronomic traits. ‘CNS’ ‘S‐100’ were chosen as representative ancestral lines from 1940s. ‘Ogden’ ‘Lee’, ‘Hill’ ‘Essex’, ‘TN 5‐85’, ‘Hutcheson’ released early 1950s, late 1950s 1970s, 1980s, respectively. experiments conducted Knoxville Experiment Station Knoxville, TN at Ames Plantation near Grand Junction, TN, for 3 yr, Milan Milan, Highland Rim Springfield, 2 yr. Results showed that cultivar improvement increased 14 kg ha −1 per year. over time linear. This linear demonstrates a plateau U.S. Midsouth reached [ Glycine max (L.) Merr.]. Most come via genetically related elite by parent crosses. However, infusion exotic germplasm into can often promote increases yield, development Hutcheson. Current cultivars better stability more response favorable growing conditions than lines. Genetic resulted shorter height decreased lodging. Oil content until but then started decrease. because correlated effects, protein after 1980s.