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ARS Home » Pacific West Area » Aberdeen, Idaho » Small Grains and Potato Germplasm Research » Research » Publications at this Location » Publication #250544

Title: Genetic mapping of thirteen drought tolerance candidate genes in wheat (T. aestivum)

item Hu, Gongshe
item CHEN, JIANLI - University Of Idaho
item CHU, CHENGGAN - North Dakota State University
item WU, YAJUN - South Dakota State University

Submitted to: Plant and Animal Genome VX Conference Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 11/1/2009
Publication Date: 1/8/2010
Citation: Hu, G., Chen, J., Chu, C., Wu, Y. 2010. Genetic mapping of thirteen drought tolerance candidate genes in wheat (T. aestivum). Plant and Animal Genome XV111 Conference Abstracts. 189

Interpretive Summary:

Technical Abstract: Drought is a severe abiotic stress that affects wheat production worldwide. In order to identify candidate genes for tolerance to water stress in wheat, sequences of 11 genes that have function of drought tolerance in other plant species were used to identify the wheat ortholog genes via homology searching in the wheat EST database. A total of 11 primer pairs were identified and amplified PCR products in wheat. Of them, 10 STS markers were mapped on 11 chromosomes in a set of nulli-tetrasomic lines of ‘Chinese Spring’ wheat; six were mapped on chromosomes 1A, 1B, 4B, 7A, 2B, and 5D, respectively, in a spring wheat mapping population (POP1). The marker XTaABH1 mapped on 7A in POP1 was the only one mapped but characterized in a winter wheat mapping population (POP2) for grain yield, kernel weight and diameter, and height in four field trials applied different water stress or irrigation. The marker XTaABH1 was significantly associated with grain yield under rainfed condition, with kernel weight under terminal and nonirrigation conditions, with kernel diameter and height under non-irrigated condition. The STS primers, map information, and marker-trait association produced in the currently study would be of interest to researchers working on drought tolerance.