Registration of Six Grain Sorghum Pollinator (R) Lines

Six sorghum [Sorghum bicolor (L.) Moench] pollinators-KS142R (Reg. No. PL-307, PI 687867), KS143R (Reg. No. PL-308, PI 687868), KS144R (Reg. No. PL-309, PI 687869), KS145R (Reg. No. PL-310, PI 687870), KS146R (Reg. No. PL-311, PI 687871), and KS147R (Reg. No. PL-312, PI 687872)-were developed from random mating using a recurrent selection followed by pedigree methods and released by the Kansas State University Agricultural Research Center, Hays, KS, in August 2017. The released pollinator (R) lines were evaluated in hybrid combinations over several environments for agronomic and yield traits. These lines were selected for release based on their agronomic desirability and unique combination of drought and stalk rots tolerance, grain quality traits, and high yield potential in hybrid combinations of importance to sorghum breeders. All six R lines can be used as male parents to develop potential high-yielding drought-tolerant hybrids with seed parents having A1 cytoplasmic male sterility background.