Vulnerability of lodging risk to elevated CO2 and increased soil temperature differs between rice cultivars |
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| Institution: | 1. National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba, Ibaraki 305-8604, Japan;2. State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Science, Nanjing 210008, PR China;3. Crop Systems and Global Change Laboratory, USDA-ARS, 10300 Baltimore Avenue, Beltsville, MD 20705, United States;1. Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Jiangsu Province, China;2. Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Jiangsu Province, China;3. Jiangxi Key Laboratory of Ecological Research of Red Soil, Experimental Station of Red Soil, Chinese Academy of Sciences, Jiangxi Province, China;1. Ministry of Agriculture Key Laboratory of Plant Nutrition and Fertilizer, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, PR China;2. Research Center of Agricultural Environment and Resources, Jilin Academy of Agricultural Sciences, Changchun 130124, PR China;3. International Plant Nutrition Institute (IPNI) China Program, CAAS–IPNI Joint Lab for Plant Nutrition Innovation Research, Beijing 100081, PR China;4. International Plant Nutrition Institute (IPNI) Southeast Asia Program, PO Box 500 GPO, Penang 10670, Malaysia;5. International Plant Nutrition Institute (IPNI), 102-411 Downey Road, Saskatoon, SK, Canada S7N4L8;1. INIAV, Quinta do Marquês, Av. República, Nova Oeiras, 2784-505 Oeiras, Portugal;2. CEER-Biosystems Engineering, ISA/UL, 1349-017 Lisboa, Portugal;3. Centre for the Research and Technology of Agro-Environmental and Biological Sciences, CITAB, University of Trás-os-Montes and Alto Douro, UTAD, Quinta de Prados, 5000-801 Vila Real, Portugal;4. Polytechnic Institute of Viseu, IPV, Agricultural Polytechnic School of Viseu, ESAV, Quinta da Alagoa, 3500-606 Viseu, Portugal;5. Chemistry Centre, University of Trás-os-Montes and Alto Douro, UTAD, Quinta de Prados, 5000-801 Vila Real, Portugal;1. Jiangsu Key Laboratory for Information Agriculture/National Engineering and Technology Center for Information/Agriculture, Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, No. 1, Weigang Rd, Nanjing 210095, China;2. Institute of Food Crop of Yunnan Academy of Agricultural Sciences, Longtou Street, North Suburb, Kunming 650205, China;3. Institute of Crop Science, Chinese Academy of Agricultural Sciences, Zhongguancun South Street, Haidian District, No. 12, Beijing 100081, China;1. Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan;2. National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba 305-8604, Japan;3. Taiyo Keiki Co. Ltd., 1-12-3, Nakajujo, Kita-ku, Tokyo 114-0032, Japan |
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| Abstract: | Anthropogenic increases in atmospheric carbon dioxide concentration CO2], and subsequent increases in surface temperatures, are likely to impact the growth and yield of cereal crops. One potential means for yield reduction is for climate parameters to increase the occurrence of lodging. Using an in situ free-air CO2 enrichment (FACE) system, two morphologically distinct rice cultivars, KH (Koshihikari) and SY (Shan you 63), were grown at two CO2]s (ambient and ambient + 200 μmol mol?1) and two soil temperatures (ambient and ambient ± 1.8 °C) over a two year period to assess and quantify lodging risk. Elevated CO2] per se had no effect on lodging resistance for either cultivar. However, elevated CO2] and higher soil temperature increased the lodging risk for SY, due to a relatively higher increase in plant biomass and height at the elevated, relative to the ambient CO2] condition. Elevated soil temperature per se also increased lodging risk for both cultivars and was associated with longer internodes in the lower portion of the tillers. These findings illustrate that lodging susceptibility in rice, an important cereal crop, can be increased by rising CO2] and soil temperature; however, variation observed here between rice cultivars suggests there may be sufficient intraspecific variability to begin choosing rice lines that minimize the potential risk of lodging. |
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