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  • 1 University of Idaho Department of PSES 1691 S 2700 W Aberdeen ID 83210 USA
  • | 2 USDA-ARS 1691 S 2700 W Aberdeen ID 83210 USA
  • | 3 Heartland Plant Innovations Chenggen Chu 217 Southwind Place Manhattan KS 66503 USA
  • | 4 South Dakota State University Department of Biology and Microbiology, 106 Ag Hall Brookings SD 57007 USA
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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. Atotal 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 stress and non-irrigation 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.

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Cereal Research Communications
Language English
Size B5
Year of
Foundation
1973
Volumes
per Year
1
Issues
per Year
4
Founder Akadémiai Kiadó
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Address
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Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
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ISSN 0133-3720 (Print)
ISSN 1788-9170 (Online)