Impact of water stress under ambient and elevated carbon dioxide across three temperature regimes on soybean canopy gas exchange and productivity.

ABSTRACT: The present study investigated the interactive effects of three environmental stress factors elevated CO₂, temperature, and drought stress on soybean growth and yield. Experiments were conducted in the sunlit, controlled environment Soil-Plant-Atmosphere-Research chambers under two-level of irrigation (WW-well water and WS-water stress-35%WW) and CO₂ (aCO_2-ambient 400 µmol mol^-1 and eCO₂-elevated 800 µmol mol^-1) and each at the three day/night temperature regimes of 24/18 °C (MLT-moderately low), 28/22 °C (OT-optimum), and 32/26 °C (MHT-moderately high). Results showed the greatest negative impact of WS on plant traits such as canopy photosynthesis (P_Cnet), total dry weight (TDwt), and seed yield. The decreases in

SUBMITTER: Singh SK 

PROVIDER: S-EPMC8363729 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature