Abstract
Key message
This review explores how speed breeding protocols that hasten plant growth and development could be applied to shorten breeding cycles and accelerate research activities in orphan crops.
Abstract
There is a growing need for the agri-food sector to sustainably produce larger quantities of higher-quality food, feed and fuel using fewer resources, within the context of changing agroclimatic conditions. Meeting this challenge will require the accelerated development and dissemination of improved plant varieties and substantial improvement of agricultural practices. Speed breeding protocols that shorten plant generation times can hasten breeding and research to help fulfil the ever-increasing demands. Global agri-food systems rely on a relatively small number of plant species; however, there are calls to widen the scope of globally important crops to include orphan crops, which are currently grown and used by the world’s poorest people or marketed as niche products for affluent consumers. Orphan crops can supply global diets with key nutrients, support economic development in the world’s poorest regions, and bolster the resilience of the global agri-food sector to biotic and abiotic stresses. Little research effort has been invested in orphan crops, with farmers growing landraces that are sourced and traded through poorly structured market systems. Efforts are underway to develop breeding resources and techniques to improve orphan crops. Here, we highlight the current efforts and opportunities to speed breed orphan crops and discuss alternative approaches to deploy speed breeding in the less-resourced regions of the world. Speed breeding is a tool that, when used together with other multidisciplinary R&D approaches, can contribute to the rapid creation of new crop varieties, agricultural practices and products, supporting the production and utilisation of orphan crops at a commercial scale.
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Acknowledgements
We are grateful to Graeme Wright (Peanut Company of Australia) for providing a photograph of peanut plants growing under speed breeding conditions (Fig. 1a) and Cathie Martin and Abhimanyu Sarkar (John Innes Centre) for providing a photograph of grass pea growing under speed breeding conditions (Fig. 1b). The authors would like to thank the Australian Research Council for support through an Early Career Discovery Research Award to Lee Hickey (DE170101296).
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Communicated by Tobias Würschum.
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Chiurugwi, T., Kemp, S., Powell, W. et al. Speed breeding orphan crops. Theor Appl Genet 132, 607–616 (2019). https://doi.org/10.1007/s00122-018-3202-7
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DOI: https://doi.org/10.1007/s00122-018-3202-7