Registration of Perennial Sorghum bicolor x S. propinquum Line PSH12TX09
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Crop Science Society of America. All rights reserved. A novel sorghum [Sorghum bicolor (L.) Moench S. propinquum (Kunth) Hitchc.] F6 recombinant inbred line, PSH12TX09 (GS- 784, PI 675359), was identified that successfully overwintered across USDA plant hardiness zones 8a, 8b, and 9a between 2013 and 2015. Prior development from the initial interspecific hybridization through the F3 generation was done at the USDA-ARS Southern Plains Area Research Center, College Station, TX; further advancement to F6 was a collaborative effort between Texas A&M University, Texas A&M AgriLife Research, and the USDA-ARS. Winter survival of PSH12TX09 exceeded 90% at three locations in plant hardiness zones 9a, 8b, and 8a in both evaluation years, with no significant differences across locations. PSH12TX09 is significantly taller (60 cm), requires more days to anthesis (16 d), and is smaller in seed size (-66%) than the well-documented sorghum inbred line BTx623. As a highly overwintering genotype, PSH12TX09 may serve as a novel resource to further dissect mechanisms of perennialism as well as develop perennial sorghum germplasm suitable for utilization as grain, forage, and biofuel feedstocks.
