Effect of Elevated CO2 on Wheat Crop: Mechanism and Impact
2015
Dubey, S. K. | Tripathi, S. K. | Pranuthi, G.
In this manuscript, an effort has been made to analyze the 19 research studies with 82 experiments being conducted in 9 countries of the world. Selected studies based on growth, yield and yield components of wheat (Triticum aestivum L.) crop under various CO ₂ levels. Only the recently published real research studies (excluding models and mathematical tools based research) were considered in the study. More than 90% of research findings proved that elevated CO ₂ have positive impact on growth, yield, and its components. The majority of the observations confirm that the elevated CO ₂ improved the yield of crop due to significant increase in growth and growth parameters such as leaf area index, plant height, and leaf area duration. No doubt elevated CO ₂ has positive impact on various growth and yield parameters but when considering the impact of climate change (elevated temperature, drought, and increasing concentration of anthropogenic gases such as CO and CH ₄), the response of CO ₂ will become negative. Even though elevated levels of CO ₂ has potential to compensate the impact of other changes in climate and may create a path in future to meet the demand of burgeoning world population.
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