Food and Energy Security | |
Alternate wetting and drying irrigation for rice in Bangladesh: Is it sustainable and has plant breeding something to offer? | |
Adam H. Price2  Gareth J. Norton2  David E. Salt2  Oliver Ebenhoeh3  Andrew A. Meharg9  Caroline Meharg9  M. Rafiqul Islam7  Ramen N. Sarma6  Tapash Dasgupta5  Abdelbagi M. Ismail1  Kenneth L. McNally1  Hao Zhang8  Ian C. Dodd4  | |
[1] International Rice Research Institute (IRRI), Metro Manila, The Philippines;Institute of Biological and Environmental Science, University of Aberdeen, Aberdeen, U.K;Institute of Complex Systems and Mathematical Biology, Department of Physics, University of Aberdeen, Aberdeen, U.K;Centre for Sustainable Agriculture, Lancaster Environment Centre, Lancaster University, Lancaster, U.K;Department of Genetics and Plant Breeding, Calcutta University, Kolkata, West Bengal, India;Department of Plant Breeding and Genetics, Assam Agricultural University, Jorhat, Assam, India;Department of Soil Science, Bangladesh Agricultural University, Mymensingh, Bangladesh;Lancaster Environment Centre, Lancaster University, Lancaster, U.K;Institute for Global Food Security, Queen's University Belfast, Belfast, U.K | |
关键词: Abscisic acid; alternate wetting and drying; arsenic; cadmium; genome‐wide association studies; rice; roots; | |
DOI : 10.1002/fes3.29 | |
来源: Wiley | |
【 摘 要 】
The crop management practice of alternate wetting and drying (AWD) is being promoted by IRRI and the national research and extension program in Bangladesh and other parts of the world as a water-saving irrigation practice that reduces the environmental impact of dry season rice production through decreased water usage, and potentially increases yield. Evidence is growing that AWD will dramatically reduce the concentration of arsenic in harvested rice grains conferring a third major advantage over permanently flooded dry season rice production. AWD may also increase the concentration of essential dietary micronutrients in the grain. However, three crucial aspects of AWD irrigation require further investigation. First, why is yield generally altered in AWD? Second, is AWD sustainable economically (viability of farmers' livelihoods) and environmentally (aquifer water table heights) over long-term use? Third, are current cultivars optimized for this irrigation system? This paper describes a multidisciplinary research project that could be conceived which would answer these questions by combining advanced soil biogeochemistry with crop physiology, genomics, and systems biology. The description attempts to show how the breakthroughs in next generation sequencing could be exploited to better utilize local collections of germplasm and identify the molecular mechanisms underlying biological adaptation to the environment within the context of soil chemistry and plant physiology.Abstract
【 授权许可】
CC BY
© 2013 The Authors. Food and Energy Security published by John Wiley & Sons Ltd. and the Association of Applied Biologists.
Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
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