Location: Crop Germplasm ResearchTitle: Registration of perennial Sorghum bicolor x S. propinquum line 'PSH12TX09'
|JESSUP, RUSSELL - Texas A&M University|
|Klein, Robert - Bob|
|MURRAY, SETH - Texas A&M University|
|WASHBURN, JACOB - Texas A&M University|
|HEITHOLT, JAMES - Texas A&M University|
|FOSTER, JAMIE - Texas Agrilife Research|
Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/31/2016
Publication Date: 1/3/2017
Citation: Jessup, R.W., Klein, R.R., Burson, B.L., Murray, S.C., Washburn, J.D., Heitholt, J.J., Foster, J.L. 2017. Registration of perennial Sorghum bicolor x S. propinquum line 'PSH12TX09'. Journal of Plant Registrations. 11:76-79.
Interpretive Summary: Perennial crops offer a significant potential for sustainable production of food, feed, and biofuel feedstocks. Successful development of perennial cereal crops, however, has been largely limited to rice, wheat, and intermediate wheatgrass. Based on its ability to cross with perennial grassy relatives, the cereal crop sorghum offers a viable option towards developing perennial warm-season grain crops. To provide geneticists with new sources of perennial grain germplasm, we crossed an elite grain sorghum line to a perennial relative of sorghum to introduce the perennial trait into grain sorghum. The result is a sorghum genetic stock that overwinters well in the deep southern U.S., produces considerable biomass, and yields a seed crop each year without replanting. As a hardy overwintering cereal, this perennial sorghum may serve as a novel resource to further dissect mechanisms of perennialism as well as develop non-invasive, perennial sorghum germplasm suitable for utilization as grain, forage, and biofuel feedstocks.
Technical Abstract: A novel sorghum x Sorghum propinquum recombinant inbred line, named PSSH12TX09, was identified that successfully overwintered across plant hardiness zones 8a, 8b, and 9a between 2013 and 2015. Overwintering perenniality of PSSH12TX09 exceeded 90% at all locations across both evaluation years, with no significant differences across locations. PSSH12TX09 has significantly larger plant height, greater days to anthesis, and smaller seed size than the elite sorghum inbred, BTx623. As a highly overwintering genotype, PSSH12TX09 may serve as a novel resource to further dissect mechanisms of perennialism as well as develop non-invasive, perennial sorghum germplasm suitable for utilization as grain, forage, and biofuel feedstocks.