Submitted to: Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: June 30, 2002
Publication Date: January 1, 2003
Citation: PEDERSEN, J.F., TOY, J.J. REGISTRATION OF RN582 SORGHUM GERMPLASM LINE. CROP SCIENCE. 2003. Interpretive Summary: RN582, a new white seeded, tan plant color sorghum R-line, was released in Sept, 2001 by the USDA-ARS and the Agricultural Research Division, Institute of Agriculture and Natural Resources, University of Nebraska. This line has been show to produce high yielding hybrids when crossed to the female line, A-Wheatland. It is adapted to the northern portion of the U.S. grain sorghum producing area and matures 5 days earlier than the male pollinator line RTx430. It is suited for the production of high quality grain for feed or food. RN582 has immediate application as a source of grain quality characters in applied breeding programs.
Technical Abstract: RN582 sorghum [Sorghum bicolor (L.) Moench] germplasm line was developed jointly by the USDA-ARS and the Agricultural Research Division, Institute of Agriculture and Natural Resources, University of Nebraska, and was released in Sept., 2001. RN582 is a S6 selection from the cross (RTx430 ms3ms3 x E-35-1) x E-35-1, and exhibits tan necrotic plant color and white seed color. RN582 has demonstrated high heterotic potential for grain yield when crossed to AWheatland, with 10% higher yields than the check hybrid AWheatland x RTx430 over a three-year period. RN582 is adapted to the northern portion of the U.S. grain sorghum producing area and reached anthesis 5 days earlier than RTx430 in that environment. RN582 is a strong restorer of fertility in A1 cytoplasm and does not have a pigmented testa. Nuclear male sterility has not been observed in RN582.