Genomic prediction of maize yield across European environmental conditions.
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2019
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Abstract
The development of germplasm adapted to changing climate is required to ensure food security. Genomic prediction is a powerful tool to evaluate many genotypes but performs poorly in contrasting environmental scenarios (genotype × environment interaction), in spite of promising results for flowering time. New avenues are opened by the development of sensor networks for environmental characterization in thousands of fields. We present a new strategy for germplasm evaluation under genotype × environment interaction. Yield was dissected in grain weight and number and genotype × environment interaction in these components was modeled as genotypic sensitivity to environmental drivers. Environments were characterized using genotype-specific indices computed from sensor data in each field and the progression of phenology calibrated for each genotype on a phenotyping platform. A whole-genome regression approach for the genotypic sensitivities led to accurate prediction of yield under genotype × environment interaction in a wide range of environmental scenarios, outperforming a benchmark approach.
| Reference Key |
millet2019genomicnature
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| Authors | Millet, Emilie J;Kruijer, Willem;Coupel-Ledru, Aude;Alvarez Prado, Santiago;Cabrera-Bosquet, Llorenç;Lacube, Sébastien;Charcosset, Alain;Welcker, Claude;van Eeuwijk, Fred;Tardieu, François; |
| Journal | nature genetics |
| Year | 2019 |
| DOI |
10.1038/s41588-019-0414-y
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