Technological advances in maize breeding: past, present and future

Abstract

Maize has for many decades been both one of the most important crops worldwide and one of the primary genetic model organisms. More recently, maize breeding has been impacted by rapid technological advances in sequencing and genotyping technology, transformation including genome editing, doubled haploid technology, parallelled by progress in data sciences and the development of novel breeding approaches utilizing genomic information. Herein, we report on past, current and future developments relevant for maize breeding with regard to (1) genome analysis, (2) germplasm diversity characterization and utilization, (3) manipulation of genetic diversity by transformation and genome editing, (4) inbred line development and hybrid seed production, (5) understanding and prediction of hybrid performance, (6) breeding methodology and (7) synthesis of opportunities and challenges for future maize breeding.

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Adapted from Troyer and Wellin (2009), Crop Science 49:1969–1976

Fig. 6

Adapted from (Gaynor et al. 2017) (color figure online)

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Acknowledgements

The authors would like to thank USDA’s National Institute of Food and Agriculture (Project numbers: IOW04314, IOW05520), as well as the RF Baker Center for Plant Breeding at Iowa State University for supporting this work.

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Andorf, C., Beavis, W.D., Hufford, M. et al. Technological advances in maize breeding: past, present and future. Theor Appl Genet 132, 817–849 (2019). https://doi.org/10.1007/s00122-019-03306-3

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