| Effects of elevated CO2 concentration on growth dynamics, yield and quality of potato in semi\|arid area |
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| DOI：10.7606/j.issn.1000-7601.2023.04.25 |
| Key Words: elevated CO2 concentration potato growth dynamics yield quality semi-arid area |
| Author Name | Affiliation | | ZHANG Kai | Institute of Arid Meteorology, China Meteorological Administration, Key Laboratory of Arid Climatic Change and Disaster Reduction in Gansu Province, Key Open Laboratory of Arid Climatic Change and Disaster Reduction of China Meteorological Administration, Lanzhou, Gansu 730020, China
College of Geography and Environment Science, Northwest Normal University, Lanzhou, Gansu 730070, China
Dingxi Arid Meteorology and Ecological Environment Field Experimental Station, China Meteorological Administration, Dingxi, Gansu 743000, China | | WANG Runyuan | Institute of Arid Meteorology, China Meteorological Administration, Key Laboratory of Arid Climatic Change and Disaster Reduction in Gansu Province, Key Open Laboratory of Arid Climatic Change and Disaster Reduction of China Meteorological Administration, Lanzhou, Gansu 730020, China | | WANG Heling | Institute of Arid Meteorology, China Meteorological Administration, Key Laboratory of Arid Climatic Change and Disaster Reduction in Gansu Province, Key Open Laboratory of Arid Climatic Change and Disaster Reduction of China Meteorological Administration, Lanzhou, Gansu 730020, China | | ZHAO Hong | Institute of Arid Meteorology, China Meteorological Administration, Key Laboratory of Arid Climatic Change and Disaster Reduction in Gansu Province, Key Open Laboratory of Arid Climatic Change and Disaster Reduction of China Meteorological Administration, Lanzhou, Gansu 730020, China | | ZHAO Funian | Institute of Arid Meteorology, China Meteorological Administration, Key Laboratory of Arid Climatic Change and Disaster Reduction in Gansu Province, Key Open Laboratory of Arid Climatic Change and Disaster Reduction of China Meteorological Administration, Lanzhou, Gansu 730020, China | | QI Yue | Institute of Arid Meteorology, China Meteorological Administration, Key Laboratory of Arid Climatic Change and Disaster Reduction in Gansu Province, Key Open Laboratory of Arid Climatic Change and Disaster Reduction of China Meteorological Administration, Lanzhou, Gansu 730020, China | | CHEN Fei | Institute of Arid Meteorology, China Meteorological Administration, Key Laboratory of Arid Climatic Change and Disaster Reduction in Gansu Province, Key Open Laboratory of Arid Climatic Change and Disaster Reduction of China Meteorological Administration, Lanzhou, Gansu 730020, China | | YANG Yang | Institute of Arid Meteorology, China Meteorological Administration, Key Laboratory of Arid Climatic Change and Disaster Reduction in Gansu Province, Key Open Laboratory of Arid Climatic Change and Disaster Reduction of China Meteorological Administration, Lanzhou, Gansu 730020, China | | LEI Jun | Meteorological Bureau of Dingxi City, Dingxi, Gansu 743000, China |
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| Abstract: |
| In the present study, the effects of elevated CO2 concentration on growth dynamics, yield and quality of potato ‘Xindaping’ were investigated based on the Open-Top Chamber (OTC) experiment platform in Dingxi, a typical semi-arid area. Two different CO2 concentrations experiments (390 μmol·mol-1 and 590 μmol·mol-1) were conducted. The results showed that under the elevated CO2 concentration (590 μmol·mol-1), the growth and development of potato were accelerated，and the whole growth period was shortened by 3 days. The elevated CO2 concentration obviously promoted the increase of plant height, leaf area index, chlorophyll content, and leaf water potential of potato. During the plant growth, the response value of aboveground dry matter production of potato to CO2 concentration showed a trend from small to large, and then from large to small. The elevated CO2 concentration promoted potato tuber yield in semi-arid area, accompanied by the increase of the number of tubers per plant and the weight of tubers per plan. Under the elevated CO2 concentration (590 μmol·mol-1), the nutrients in potato tubers, such as moisture, protein, vitamin C, as well as trace elements such as iron, zinc and copper decreased by 3.43%, 11.78%, 13.09%, 25.58%, 31.94% and 9.76% respectively. However, the nutrients such as crude starch, crude fat, crude fiber and reducing sugar increased by 10.56%, 240.00%, 14.28% and 106.38% respectively. |
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