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United States Department of Agriculture

Agricultural Research Service

Related Topics

Research Project: ENHANCEMENT OF COLD TOLERANCE IN SORGHUM

Location: Plant Stress and Germplasm Development Research

Project Number: 6208-21000-020-19
Project Type: General Cooperative Agreement

Start Date: Apr 01, 2012
End Date: Sep 30, 2013

Objective:
To pursue breeding for enhanced abiotic stress tolerance in sorghum, which will encompass (but not be limited to) activities such as next generation sequencing and bioinformatic analysis of transcriptomes of four parental sorghum lines and genome wide re-analysis of QTL maps of mapping populations.

Approach:
1. Perform high-density Illumina genotyping of PI610727, Shan Qui Red, PI567946, Tx430, and SRN39 (parents of RIL populations) and bioinformatics for single nucleotide polymorphism analysis. 2. Pursue re-analysis of cold-tolerance QTL data from these 4 RIL populations in a single, joint genome-wide association analysis using the high-density genotypes from part (1). 3. Perform pilot expression study: collect RNA from the cold-grown inbred parents (same 5 lines as in part 1) and their hybrids during germination, perform RNAseq, and look for cis-regulatory differences (differences in abundance between parental alleles) in the hybrids. 4. Perform statistical analysis and documentation (in form of graphs, photos, etc.) of results and provide the ARS coordinator with data, documentation, and reports from the endeavors of the agreement for use in submission of reports to funding agency.

Last Modified: 9/22/2014
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