Zheng Guowei, Chen Jia, Li Weiqi
College of Chinese Material Medica, Yunnan University of Chinese Medicine, Kunming, Yunnan, People's Republic of China.
Yunnan Key Laboratory of Dai and Yi Medicines, Yunnan University of Chinese Medicine, Kunming, Yunnan, People's Republic of China.
Plant Divers. 2019 Oct 23;42(1):44-51. doi: 10.1016/j.pld.2019.09.004. eCollection 2020 Feb.
Understanding the responses of crops to elevated atmospheric carbon dioxide concentrations (E[CO]) is very important in terms of global food supplies. The present study investigates the effects of CO enrichment (to 800 μmol mol) on the physiology of soybean plants and the nutritional value of their seeds under growth chamber conditions. The photosynthesis of soybean was significantly promoted by E[CO] at all growth stages, but leaf area and specific leaf weight were not affected. The levels of mineral elements in the leaves decreased under E[CO]. The soil properties after soybean cultivation under E[CO] were not affected, except for a decrease in available potassium. Moreover, the levels of soluble sugars in the seeds were not affected by E[CO], but the levels of natural antioxidants decreased. In addition, the level of oleic acid decreased under E[CO]. However, levels of fatty acid peroxidation and saturation were maintained. In conclusion, E[CO] appears to have positive effects on the growth of cultivated soybean plants, but its influence on the nutritional values of soybean seeds is complex.
就全球粮食供应而言，了解作物对大气二氧化碳浓度升高（E[CO₂]）的反应非常重要。本研究调查了在生长室条件下，将二氧化碳浓度提高到800 μmol/mol对大豆植株生理特性及其种子营养价值的影响。在所有生长阶段，E[CO₂]均显著促进了大豆的光合作用，但叶面积和比叶重未受影响。E[CO₂]条件下叶片中的矿质元素含量下降。除速效钾含量降低外，E[CO₂]条件下种植大豆后土壤性质未受影响。此外，种子中的可溶性糖含量不受E[CO₂]影响，但天然抗氧化剂含量下降。另外，E[CO₂]条件下油酸含量降低。然而，脂肪酸过氧化和饱和度水平保持不变。总之，E[CO₂]似乎对栽培大豆植株的生长有积极影响，但其对大豆种子营养价值的影响较为复杂。
