Title |
Genomic prediction for grain zinc and iron concentrations in spring wheat
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Published in |
Theoretical and Applied Genetics, May 2016
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DOI | 10.1007/s00122-016-2726-y |
Pubmed ID | |
Authors |
Govindan Velu, Jose Crossa, Ravi P. Singh, Yuanfeng Hao, Susanne Dreisigacker, Paulino Perez-Rodriguez, Arun K. Joshi, Ravish Chatrath, Vikas Gupta, Arun Balasubramaniam, Chhavi Tiwari, Vinod K. Mishra, Virinder Singh Sohu, Gurvinder Singh Mavi |
Abstract |
Predictability estimated through cross-validation approach showed moderate to high level; hence, genomic selection approach holds great potential for biofortification breeding to enhance grain zinc and iron concentrations in wheat. Wheat (Triticum aestivum L.) is a major staple crop, providing 20 % of dietary energy and protein consumption worldwide. It is an important source of mineral micronutrients such as zinc (Zn) and iron (Fe) for resource poor consumers. Genomic selection (GS) approaches have great potential to accelerate development of Fe- and Zn-enriched wheat. Here, we present the results of large-scale genomic and phenotypic data from the HarvestPlus Association Mapping (HPAM) panel consisting of 330 diverse wheat lines to perform genomic predictions for grain Zn (GZnC) and Fe (GFeC) concentrations, thousand-kernel weight (TKW) and days to maturity (DTM) in wheat. The HPAM lines were phenotyped in three different locations in India and Mexico in two successive crop seasons (2011-12 and 2012-13) for GZnC, GFeC, TKW and DTM. The genomic prediction models revealed that the estimated prediction abilities ranged from 0.331 to 0.694 for Zn and from 0.324 to 0.734 for Fe according to different environments, whereas prediction abilities for TKW and DTM were as high as 0.76 and 0.64, respectively, suggesting that GS holds great potential in biofortification breeding to enhance grain Zn and Fe concentrations in bread wheat germplasm. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
India | 1 | 10% |
Mexico | 1 | 10% |
Australia | 1 | 10% |
United Kingdom | 1 | 10% |
Unknown | 6 | 60% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 6 | 60% |
Scientists | 3 | 30% |
Practitioners (doctors, other healthcare professionals) | 1 | 10% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Mexico | 2 | 2% |
Denmark | 1 | <1% |
Unknown | 99 | 97% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 27 | 26% |
Student > Ph. D. Student | 16 | 16% |
Student > Master | 11 | 11% |
Other | 6 | 6% |
Student > Doctoral Student | 5 | 5% |
Other | 13 | 13% |
Unknown | 24 | 24% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 64 | 63% |
Biochemistry, Genetics and Molecular Biology | 3 | 3% |
Environmental Science | 2 | 2% |
Arts and Humanities | 2 | 2% |
Mathematics | 1 | <1% |
Other | 3 | 3% |
Unknown | 27 | 26% |