Citation
Watson, Amy and Ghosh, Sreya and Williams, Matthew J. and Cuddy, William S. and Simmonds, James and Rey, María Dolores and Md Hatta, Muhammad Asyraf and Hinchliffe, Alison and Steed, Andrew and Reynolds, Daniel and Adamski, Nikolai M. and Breakspear, Andy and Korolev, Andrey and Rayner, Tracey and Dixon, Laura E. and Riaz, Adnan and Martin, William and Ryan, Merrill and Edwards, David and Batley, Jacqueline and Raman, Harsh and Carter, Jeremy and Rogers, Christian and Domoney, Claire and Moore, Graham and Harwood, Wendy and Nicholson, Paul and Dieters, Mark J. and DeLacy, Ian H. and Ji, Zhou and Uauy, Cristobal and Boden, Scott A. and Park, Robert F. and Wulff, Brande B. H. and Hickey, Lee T.
(2018)
Speed breeding is a powerful tool to accelerate crop research and breeding.
Nature Plants, 4 (1).
23 - 29.
ISSN 2055-026X; ESSN: 2055-0278
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.
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