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...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 optimizing lightand temperature conditions during plant growth.However,winter crops with a vernalization requirement stillrequire upto 6-10weeks in low-temperature conditions before thetransition to reproductivedevelopment.Here,we tested a suite of environmental conditions and protocols to investigate whether the vernalization process can be accelerated.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 speedvernalization protocolfollowed byspeedbreedingallowed the completion ofuptofivegenerations per yearforwinter wheat or barley,whereas only two generations can be typically completed under standard vernalization and plant growth conditions.The speed vernalization protocol developed in this study has great potential to accelerate biological research and breeding outcomes for winter crops.展开更多
Climate change is making it more challenging to meet the food demands of a growing global population.Increased food produc-tion relies on continual crop improvements to generate higher and more stable yields,especiall...Climate change is making it more challenging to meet the food demands of a growing global population.Increased food produc-tion relies on continual crop improvements to generate higher and more stable yields,especially with increasingly unpredictable environments and less arable land.The improvement of traits that promote climate resilience and resource utilization,for example,greater photosynthetic capacity,increased nitrogen use efficiency,and optimized root and shoot architecture,repre-sents a promising avenue for engineering crops to yield more with less(Evans and Lawson,2020).A key challenge for crop engineering is optimizing performance in specific environments.展开更多
基金This research was supported by the Research Program for Agricultural Science and Technology Development(project no.PJ01450201)Rural Development AdministrationL.T.H.received funding from the Australian Research Council(ARC),project codes DP190102185 and LP170100317+1 种基金Genotyping of the winter-barley accessions at The University of Queensland was funded through the Grains Research and Development Corporation(GRDC),project code UOQ2005-012RTXS.A.was supported by a GRDC Postdoctoral Fellowship,project code UOQ1903-007RTX。
文摘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 optimizing lightand temperature conditions during plant growth.However,winter crops with a vernalization requirement stillrequire upto 6-10weeks in low-temperature conditions before thetransition to reproductivedevelopment.Here,we tested a suite of environmental conditions and protocols to investigate whether the vernalization process can be accelerated.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 speedvernalization protocolfollowed byspeedbreedingallowed the completion ofuptofivegenerations per yearforwinter wheat or barley,whereas only two generations can be typically completed under standard vernalization and plant growth conditions.The speed vernalization protocol developed in this study has great potential to accelerate biological research and breeding outcomes for winter crops.
基金supported by the Australian Rsearch Council(ARC)Centre of Excellence in Plant Energy Biology(CE 141000080 )and CSIRO Synthetic Biology Future Sclence Platform.LT.H.received fundng from the ARC(DP190102185).P A.C.was suppoted by an ARC Discovery Early Career Award(DE200101748).
文摘Climate change is making it more challenging to meet the food demands of a growing global population.Increased food produc-tion relies on continual crop improvements to generate higher and more stable yields,especially with increasingly unpredictable environments and less arable land.The improvement of traits that promote climate resilience and resource utilization,for example,greater photosynthetic capacity,increased nitrogen use efficiency,and optimized root and shoot architecture,repre-sents a promising avenue for engineering crops to yield more with less(Evans and Lawson,2020).A key challenge for crop engineering is optimizing performance in specific environments.
