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ARS Home » Plains Area » Lubbock, Texas » Cropping Systems Research Laboratory » Plant Stress and Germplasm Development Research » Research » Publications at this Location » Publication #319105

Research Project: Enhancing Plant Resistance to Water-Deficit and Thermal Stresses in Economically Important Crops

Location: Plant Stress and Germplasm Development Research

Title: Characterization of genetic diversity of high temperature tolerance in sorghum

Author
item Chen, Junping
item Hayes, Chad
item Chopra, Ratan
item Burow, Gloria
item Marla, Sandeep - Kansas State University
item Morris, Geoffrey - Kansas State University
item Xin, Zhanguo
item Burke, John

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 8/6/2015
Publication Date: 9/1/2015
Citation: Chen, J., Hayes, C.M., Chopra, R., Burow, G.B., Marla, S., Morris, G., Xin, Z., Burke, J.J. 2015. Characterization of genetic diversity of high temperature tolerance in sorghum [abstract]. Sorghum Improvement Conference of North America, September 1-3, 2015, Manhattan, Kansas. p. 1.

Interpretive Summary:

Technical Abstract: As global warming becomes inevitable, the sustainability of agricultural production in US and worldwide faces serious threat from extreme weather conditions, such as drought and elevated extreme temperatures (heat waves). Among cereal crops, sorghum is considered a versatile crop for semiarid area and marginal land for its’ high tolerance levels for heat and drought. Nevertheless, our field observation show great genetic variation in heat tolerance among sorghum accession. In this study, we evaluated vegetative stage heat tolerance traits of 377 sorghum breeding panel under 4 environments in field study. Preliminary genome-wide association analyses revealed several chromosome regions that are associated with observed heat tolerance traits. Detained analysis in the identification of genetic loci contributing to heat tolerance in sorghum is underway. The outcome of this study will further our understanding about the genetic mechanisms of heat tolerance in sorghum and help in the genetic improvement of heat tolerance in crop varieties/hybrid.