Submitted to: Crop Science
Publication Type: Germplasm Release
Publication Acceptance Date: 8/1/2005
Publication Date: 2/1/2006
Citation: Nelson, R.L., Johnson, E.O. 2006. Registration of LG97-7012, LG98-1445, and LG98-1605 soybean germplasm. Crop Science. 46:(4)1822-1824 JUL-AUG 2006. Interpretive Summary: This is a germplasm release and no interpretive summary is required.
Technical Abstract: The soybean germplasm lines LG97-7012, LG98-1445, and LG98-1605 were released by the USDA-Agricultural Research Service and the Illinois Agricultural Experiment Station for use as parental lines in yield improvement programs. These lines combine high yield with unique genetic diversity not currently present in the commercially used gene pool in the U.S. By pedigree analysis, LG97-7012 is 25% derived from PI 90566-1 and in the 2002 Uniform Test III, LG97-7012 was 4% higher yielding than IA2052. LG98-1445 is 25% derived from an experimental line with PI 227333 and PI 91730-1 as parents. In 2002 in Uniform Test III, LG98-1445 was 10% higher yielding than IA2052. LG98-1605 is solely derived from six exotic germplasm lines, PI 253665D, PI 283331, PI 361064, PI 407710, PI 404157, and PI 384469A. In the Uniform Preliminary Test IIB in 2001, LG92-1605 equaled the yield of the highest yielding cultivar in the test, IA2052. The nine exotic accessions used to develop these experimental lines have been characterized using RAPD fragments and compared to the major ancestral lines of current U.S. cultivars. These accessions were classified into six different genetic groups. Three of these PIs were in genetic groups that contained no U.S. ancestral lines.