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Nat Plants. 2018 Jan;4(1):23-29. doi: 10.1038/s41477-017-0083-8. Epub 2018 Jan 1.

Speed breeding is a powerful tool to accelerate crop research and breeding.

Author information

1
Queensland Alliance for Agriculture and Food Innovation, University of Queensland, St Lucia, Queensland, Australia.
2
John Innes Centre, Norwich Research Park, Norwich, UK.
3
Plant Breeding Institute, University of Sydney, Cobbitty, New South Wales, Australia.
4
Elizabeth Macarthur Agricultural Institute, NSW Department of Primary Industries, Menangle, New South Wales, Australia.
5
Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Malaysia.
6
Earlham Institute, Norwich Research Park, Norwich, UK.
7
Department of Agriculture and Fisheries, Hermitage Research Facility, Warwick, Queensland, Australia.
8
School of Biological Sciences and Institute of Agriculture, University of Western Australia, Crawley, Western Australia, Australia.
9
Wagga Wagga Agricultural Institute, NSW Department of Primary Industries, Wagga Wagga, New South Wales, Australia.
10
School of Agriculture and Food Sciences, University of Queensland, St Lucia, Queensland, Australia.
11
John Innes Centre, Norwich Research Park, Norwich, UK. brande.wulff@jic.ac.uk.
12
Queensland Alliance for Agriculture and Food Innovation, University of Queensland, St Lucia, Queensland, Australia. l.hickey@uq.edu.au.

Abstract

The growing human population and a changing environment have raised significant concern for global food security, with the current improvement rate of several important crops inadequate to meet future demand 1 . This slow improvement rate is attributed partly to the long generation times of crop plants. Here, we present a method called 'speed breeding', which greatly shortens generation time and accelerates breeding and research programmes. Speed breeding can be used to achieve up to 6 generations per year for spring wheat (Triticum aestivum), durum wheat (T. durum), barley (Hordeum vulgare), chickpea (Cicer arietinum) and pea (Pisum sativum), and 4 generations for canola (Brassica napus), instead of 2-3 under normal glasshouse conditions. We demonstrate that speed breeding in fully enclosed, controlled-environment growth chambers can accelerate plant development for research purposes, including phenotyping of adult plant traits, mutant studies and transformation. The use of supplemental lighting in a glasshouse environment allows rapid generation cycling through single seed descent (SSD) and potential for adaptation to larger-scale crop improvement programs. Cost saving through light-emitting diode (LED) supplemental lighting is also outlined. We envisage great potential for integrating speed breeding with other modern crop breeding technologies, including high-throughput genotyping, genome editing and genomic selection, accelerating the rate of crop improvement.

PMID:
29292376
DOI:
10.1038/s41477-017-0083-8
[Indexed for MEDLINE]

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