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A deep convolutional neural network approach for predicting phenotypes from genotypes

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Abstract

Main conclusion

Deep learning is a promising technology to accurately select individuals with high phenotypic values based on genotypic data.

Abstract

Genomic selection (GS) is a promising breeding strategy by which the phenotypes of plant individuals are usually predicted based on genome-wide markers of genotypes. In this study, we present a deep learning method, named DeepGS, to predict phenotypes from genotypes. Using a deep convolutional neural network, DeepGS uses hidden variables that jointly represent features in genotypes when making predictions; it also employs convolution, sampling and dropout strategies to reduce the complexity of high-dimensional genotypic data. We used a large GS dataset to train DeepGS and compared its performance with other methods. The experimental results indicate that DeepGS can be used as a complement to the commonly used RR-BLUP in the prediction of phenotypes from genotypes. The complementarity between DeepGS and RR-BLUP can be utilized using an ensemble learning approach for more accurately selecting individuals with high phenotypic values, even for the absence of outlier individuals and subsets of genotypic markers. The source codes of DeepGS and the ensemble learning approach have been packaged into Docker images for facilitating their applications in different GS programs.

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Abbreviations

CNN:

Deep convolutional neural network

DL:

Deep learning

GS:

Genomic selection

MNV:

Mean normalized discounted cumulative gain value

(RR)-BLUP:

(Ridge regression)-Best linear unbiased prediction

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (31570371), the Agricultural Science and Technology Innovation and Research Project of Shaanxi Province, China (2015NY011), the Youth 1000-Talent Program of China, the Hundred Talents Program of Shaanxi Province of China, the Innovative Talents Promotion Project of Shaanxi Province of China (2017KJXX-67), and the Fund of Northwest A&F University.

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Correspondence to Chuang Ma.

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We declare that we have no competing interests.

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Ma, W., Qiu, Z., Song, J. et al. A deep convolutional neural network approach for predicting phenotypes from genotypes. Planta 248, 1307–1318 (2018). https://doi.org/10.1007/s00425-018-2976-9

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  • DOI: https://doi.org/10.1007/s00425-018-2976-9

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