Journal
PLANT PRODUCTION SCIENCE
Volume 12, Issue 4, Pages 526-532Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1626/pps.12.526
Keywords
Adaptation; Climate change; Daytime temperature; Food security; Long-term experiment; Seed filling; Soybean; Yield
Categories
Funding
- National Basic Research Program of China [2005CB121107]
- National Natural Science Foundation of China [40621061]
- Chinese Academy of Sciences [KZCX2-YW-421]
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Daytime temperature during seed filling is a crucial determinant of grain yield in Pulse Crops. Although there is much research about the effect of daytime temperature during seed filling oil soybean yield in temperature-controlled chambers, the effect in the field has been little explored. Long-term manipulative field experiments are important tools to provide accurate information for revealing the impacts of climate change oil crop yields. Using the field records of a long-term fertilization experiment conducted in Northeast China, we analyzed the response of soybean yields to mean daily maximum temperature during seed filling over the period 1987-2007. The results showed that there was a clear positive response of soybean yields to increased mean daily maximum temperature during seed filling ranged from 20 to 24 degrees C. When compared with the average soybean yields over the last two decades, grain yields increased by 6-10% for each 1 degrees C increase in mean daily maximum temperature during seed filling and more than 22% of yield trends call be explained. These findings provide a direct evidence for the response of soybean yield to climate change in the field study.
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