Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 5/29/2019
Publication Date: 9/1/2019
Citation: Burke, J., Emendack, Y., Hayes, C.M., Xin, Z., Burow, G.B. 2019. Registration of five post-flowering drought tolerant grain sorghum lines with early season cold tolerance. Journal of Plant Registrations. https://doi.org/10.3198/jpr2019.02.0010crg.
Interpretive Summary: Early and late season low temperatures are commonly experienced by sorghum throughout the United States and in mountainous regions of the world. Cool temperatures during the early growing season are a major limitation to growing sorghum in temperate areas. Unfortunately, Chinese sources of cold tolerance that have been used by the sorghum industry have poor agronomic trait, high tannin levels, disease susceptibility and lodging. Researchers in ARS Lubbock, working with materials from Ethiopia and Sudan, developed 5 lines with good cold tolerance, desirable agronomic traits, and good standability which can be use by the sorghum industry as alternative sources of cold tolerance.
Technical Abstract: Low temperatures often affect plant growth and crop productivity which causes significant crop loses. Cold temperature early in the season affect the ability of sorghum crop to germinate, grow and produce satisfactory grain yields. The use of Chinese sources of cold tolerance in sorghum industry has been tepid because of the poor agronomics and lodging. Working with accessions, from Ethiopia and Sudan, screening for early season field cold final germination percent and vigor rating were performed in 2015 and 2016 at the research fields of PSGD. 5 lines (PSLS-CTB06, PSLS-CTB07, PSLS-CTB08, PSLS-CTB09, and PSLS-CTB10) with good cold tolerance, good agronomics and standability were developed. The primary purpose for the release of these lines is to provide an alternative germplasm choice with superior early season cold tolerance.