Submitted to: Journal of Plant Registrations
Publication Type: Peer reviewed journal
Publication Acceptance Date: 1/3/2012
Publication Date: 5/1/2012
Publication URL: http://handle.nal.usda.gov/10113/58440
Citation: Nelson, R.L., Johnson, E.O. 2012. Registration of high-yielding soybean germplasm line LG04-6000. Journal of Plant Registrations. 6:212-215. Interpretive Summary: A critical component of increasing the yield of future U.S. soybean varieties is the incorporation of new genetic diversity. Less than 1% of the available genetic resources have been used to develop current varieties. To assist in introducing new genetic diversity that can increase future soybean yields, we have developed a new experimental line, LG04-6000, derived from crossing with a Chinese cultivar that has not been previously used in U.S. soybean breeding. In regional tests, this line has consistently exceeded the yield of the best publically developed cultivars. This line has the potential to make a significant genetic contribution to variety development programs of both private industry and public institutions in the U.S.
Technical Abstract: Soybean [Glycine max (L.) Merr.] germplasm line LG04-6000 (Reg. No. GP-, PI) was developed and released by the USDA-Agricultural Research Service and the Illinois Agricultural Experiment Station, Urbana IL. LG04-6000 is derived from an F5 plant from the cross of HS93-4118 x LG97-9912. LG97-9912 was derived from LG90-4181 x A3322. LG90-4181 is from PI 436682 x Lawrence. This is the first germplasm released in the United States that has this introduction as a progenitor. LG04-6000 is classified in early maturity group IV. In tests at eight locations in 2006 conducted cooperatively with commercial soybean breeding companies, LG04-6000 yielded 127 kg ha-1 more than LD00-3309. In tests at 22 locations in the Uniform Test IV in 2007 and 2008, LG04-6000 was the highest yielding entry in the test in both years exceeding the yield of LD00-3309, the highest yielding cultivar in both years, by an average of 8%. LG04-6000 is known to be susceptible to races 4 and 7 of Phytophthora sojae. LG04-6000 can be used as a parent in soybean breeding programs to provide new genetic diversity to improve the yield of U.S. cultivars.