Cha, J-K, O’Connor, K, Alahmad, S et al. (12 more authors) (2022) Speed vernalization to accelerate generation advance in winter cereal crops. Molecular Plant, 15 (8). pp. 1300-1309. ISSN 1674-2052
Abstract
There are many challenges facing the development of high-yielding, nutritious crops for future environments. One limiting factor is generation time, which prolongs research and plant breeding timelines. Recent advances in speed breeding protocols have dramatically reduced generation time for many short-day and long-day species by optimising light and temperature conditions during plant growth. However, winter crops with a vernalization requirement still require up to 6–10 weeks in low-temperature conditions before the transition to reproductive development. Here, we tested a suite of environmental conditions and protocols to investigate if vernalization can be satisfied more efficiently. We identified a vernalization method consisting of exposing seeds at the soil surface to an extended photoperiod of 22 h day:2 h night at 10°C with transfer to speed breeding conditions that dramatically reduces generation time in both winter wheat (Triticum aestivum) and winter barley (Hordeum vulgare). Implementation of the speed vernalization protocol followed by speed breeding achieved up to five generations per year for winter wheat or barley, whereas only two generations can be typically completed under standard vernalization and plant growth conditions. The speed vernalization protocol that we developed in this study has great potential to accelerate biological research and breeding outcomes for winter crops.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 The Author. This is an author produced version of an article, published in Molecular Plant. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Speed breeding; speed vernalization; photo; period; temperature; wheat; barley; crops; breeding |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Biological Sciences (Leeds) > School of Biology (Leeds) |
Funding Information: | Funder Grant number UKRI (UK Research and Innovation) MR/S031677/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 08 Jul 2022 09:39 |
Last Modified: | 24 Oct 2024 14:01 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.molp.2022.06.012 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:188442 |