气候变化领域集成服务门户(CCPortal): Steady agronomic and genetic interventions are essential for sustaining productivity in intensive rice cropping

CCPortal

DOI	10.1073/pnas.2110807118
	Steady agronomic and genetic interventions are essential for sustaining productivity in intensive rice cropping
	Ladha J.K.; Radanielson A.M.; Elaine Rutkoski J.; Buresh R.J.; Dobermann A.; Angeles O.; Pabuayon I.L.B.; Santos-Medellin C.; Fritsche-Neto R.; Chivenge P.; Kohli A.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:45
英文摘要	Intensive systems with two or three rice (Oryza sativa L.) crops per year account for about 50% of the harvested area for irrigated rice in Asia. Any reduction in productivity or sustainability of these systems has serious implications for global food security. Rice yield trends in the world's longest-running long-term continuous cropping experiment (LTCCE) were evaluated to investigate consequences of intensive cropping and to draw lessons for sustaining production in Asia. Annual production was sustained at a steady level over the 50-y period in the LTCCE through continuous adjustment of management practices and regular cultivar replacement. Within each of the three annual cropping seasons (dry, early wet, and late wet), yield decline was observed during the first phase, from 1968 to 1990. Agronomic improvements in 1991 to 1995 helped to reverse this yield decline, but yield increases did not continue thereafter from 1996 to 2017. Regular genetic and agronomic improvements were sufficient to maintain yields at steady levels in dry and early wet seasons despite a reduction in the yield potential due to changing climate. Yield declines resumed in the late wet season. Slower growth in genetic gain after the first 20 y was associated with slower breeding cycle advancement as indicated by pedigree depth. Our findings demonstrate that through adjustment of management practices and regular cultivar replacement, it is possible to sustain a high level of annual production in irrigated systems under a changing climate. However, the system was unable to achieve further increases in yield required to keep pace with the growing global rice demand. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Food security; Intensive cropping; Long-term productivity trends; Rice; Sustainability
语种	英语
scopus关键词	article; Asia; breeding; climate; cultivar; food security; genetic gain; nonhuman; pedigree; plant yield; productivity; rainy season; rice; running
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238600
作者单位	Department of Plant Sciences, University of California, Davis, CA 95616, United States; International Rice Research Institute, Los Baños, 4031, Philippines; Centre for Sustainable Agricultural Systems, University of Southern Queensland, Toowoomba, QLD 4350, Australia; Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States; International Fertilizer Association, Paris, 75116, France; Department of Plant and Soil Science, Texas Tech University, Lubbock, TX 79410, United States; Department of Plant Pathology, University of California, Davis, CA 95616, United States; African Plant Nutrition Institute, Benguerir, 43150, Morocco
推荐引用方式 GB/T 7714	Ladha J.K.,Radanielson A.M.,Elaine Rutkoski J.,et al. Steady agronomic and genetic interventions are essential for sustaining productivity in intensive rice cropping[J],2021,118(45).
APA	Ladha J.K..,Radanielson A.M..,Elaine Rutkoski J..,Buresh R.J..,Dobermann A..,...&Kohli A..(2021).Steady agronomic and genetic interventions are essential for sustaining productivity in intensive rice cropping.Proceedings of the National Academy of Sciences of the United States of America,118(45).
MLA	Ladha J.K.,et al."Steady agronomic and genetic interventions are essential for sustaining productivity in intensive rice cropping".Proceedings of the National Academy of Sciences of the United States of America 118.45(2021).