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GENETIC STOCK

Registration of BN611, AN612, BN612, and RN613 Sorghum Genetic Stocks with Stacked bmr-6 and bmr-12 Genes

^a USDA-ARS, Grain, Forage, and Bioenergy Research, 314 Biochemistry, Univ. of Nebraska-Lincoln, Lincoln, NE 68583-0737
^b Dep. of Physics, Oklahoma State Univ., Stillwater, OK 74078
^c W.H. Miner Agricultural Research Institute, Chazy, NY 12921. Joint contribution of the USDA-ARS and the University of Nebraska Agricultural Experiment Station

^* Corresponding author (jeff.pedersen{at}ars.usda.gov).

ABSTRACT

Four sorghum [Sorghum bicolor (L.) Moench] genetic stocks, BN611 (Reg. No. GS-140, PI 652943), AN612 (Reg. No. GS-141, PI 652944), BN612 (Reg. No. GS-142, PI 652945), and RN613 (Reg. No. GS-143, PI 652946), with stacked brown midrib genes bmr-6 and bmr-12 were developed jointly by the USDA-ARS and the Agricultural Research Division, Institute of Agriculture and Natural Resources, University of Nebraska, and were released in July 2006. The genetic stocks BN611, AN612 and BN612, and RN613 were tested as Atlas bmr-6 bmr-12, Wheatland bmr-6 bmr-12, and RTx430 bmr-6 bmr-12, respectively. Release of these genetic stocks makes stacked brown midrib genes, reported to reduce the activity of two enzymes important in lignin synthesis, cinnamyl alcohol dehydrogenase (bmr-6) and caffeic acid O-methyl transferase (bmr-12), available in a common forage sorghum, a common grain sorghum seed parent, and a common grain sorghum pollen parent background. The genetic stocks have immediate application for basic research involving lignin synthesis.

Abbreviations: ADF, acid detergent fiber • ADL, acid detergent lignin • CAD, cinnamyl alcohol dehydrogenase • COMT, caffeic acid O-methyl transferase • NDF, neutral detergent fiber