|
| Review on crop responses to rising atmospheric[CO2] |
| Received:December 10, 2019 |
| View Full Text View/Add Comment Download reader |
| KeyWord:global climate change;elevated[CO2];crops;Free-air CO2 enrichment (FACE) |
| Author Name | Affiliation | E-mail | | SONG Lian | State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | CAI Chuang | State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | ZHU Chun-wu | State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | cwzhu@issas.ac.cn |
|
| Hits: 1860 |
| Download times: 1931 |
| Abstract: |
| The concentration of CO2 in the atmosphere([CO2])has been continually increasing since the industrial revolution. The rising of[CO2] has a great influence in agriculture and crops. In this paper, the main experimental methods studying the physiological and yield responses of crops to rising[CO2] have been summarized. On the basis of reviewing the state of the art in this field, this paper indicates that the responses of crops to rising[CO2] has been measured in green houses, closed or open top chambers and free-air CO2 enrichment (FACE)platform. FACE enables growth of crops in large plots and avoids the alterations to the microclimate, thus it has been widely recognized as the gold standard for examining crop responses to elevated[CO2]. Photosynthesis, biomass and yield of crops will benefit directly from an increase in[CO2]. However, there is photosynthetic acclimation when crops are grown at elevated[CO2] in the long-term. On the other hand, the rice FACE results indicated that some rice varieties show higher photosynthetic rate and larger yield responses to[CO 2] enrichment in the last decades.Recently, there has been growing awareness of the negative effects of rising[CO 2] on seed, grain and tuber quality, the protein and mineral content in the crops grown in the elevated[CO2] conditions. A decrease of protein and mineral contents in crops due to elevated[CO2] would exacerbate the mineral deficiencies which already exists. Thus, adapting crops to rising[CO2] with larger grain yields and reduce the potential for already negative consequences of changes in food quality on human health is an urgent priority. |
|
|
|
