Registration of NP30, A Low-Dhurrin Sudangrass Population Selected for Regrowth Potential

Authors

Herman J. Gorz, United States Department of Agriculture
Francis A. Haskins, University of Nebraska-LincolnFollow
K. P. Vogel, United States Department of AgricultureFollow

Date of this Version

5-1990

Comments

Published in Crop Science (May-June 1990) 30: 759.

Abstract

NP30 sudangrass [Sorghum bicolor (L.) Moench] [formerly S. sudanense (Piper) Staph] (Reg. no. GP-238, PI 535774) is a low-dhurrin, random-mating population developed cooperatively by the USDA-ARS and the Nebraska Agricultural Research Division. The population was released in April 1989. NP30 was synthesized from 85 S₁ families selected from a total of 757 families that were evaluated for regrowth potential. The germplasm sources evaluated included 50 S₁ families from the NP25(3) sudangrass population, 90 from NP28(2), 284 from NP29(4), 200 from NP31(5), 50 from NP32(5), and 83 S₁ families from miscellaneous breeding lines low in dhurrin. The 85 S₁ families selected for superior regrowth were derived from only two of the above sources with 42 S_1S being selected from NP29 and 43 S_1S from NP31. Both NP29 and NP31 carried the ms₃ gene for genetic male-sterility.