Submitted to: Crop Science
Publication Type: Germplasm Release
Publication Acceptance Date: 11/19/2005
Publication Date: 5/15/2006
Citation: Nelson, R.L., Johnson, E.O. 2006. Registration of LG96-1797 soybean germplasm. Crop Science. 46(3):1403. Interpretive Summary: This is a germplasm release and no interpretive summary is required.
Technical Abstract: The soybean germplasm line LG96-1797 was released by the USDA-Agricultural Research Service and the Illinois Agricultural Experiment Station for use as a parental line in yield improvement programs. This line combines high yield with unique genetic diversity not currently present in the commercially used gene pool in the U.S. This is the first high yielding germplasm released in the U.S. that has either PI 436682 or PI 438206 as a progenitor. In 1999, it was tested at 9 locations in the Uniform Preliminary Test IVB. LG96-1797 matured at the same time as Macon and yielded 8% less. It was nearly the same in protein and slightly lower in oil when compared to Macon. It is resistant to race 7 of Phytophthora sojae. One exotic parent, PI 436682, is a Chinese cultivar, Jilin 15, released from Jilin Academy of Agricultural Sciences in 1978. It was derived from three Chinese landraces, two of which are among the 12 most important ancestral lines of modern Chinese cultivars in northeastern China. The second exotic parent, PI 438206, was introduced from the Soviet Union in 1980. It was originally from northeast China but the record of its genetic history has been lost. The exotic parents in this release have been characterized using RAPD fragments and compared to the major ancestral lines of current U.S. cultivars. Based on analysis of the RAPD data, these two introductions were classified into two different genetic groups. PI 436682 is in genetic group D and none of the major U.S. ancestral lines are in this group. PI 438206 is in genetic group F. Capitol is the only ancestral line in this group and it contributes less than 2% of the genes to the current gene pool based on pedigree analysis.