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- W1983403713 abstract "Yields and yield components of two cultivars of day‐neutral spring wheat ( Triticum aestivum L.) were assessed along a gradient of daytime carbon dioxide (CO 2 ) concentrations from about 200 to near 350 μmol CO 2 (mol air) –1 in a 38 m‐long controlled environment chamber. The range in CO 2 concentration studied approximates that of Earth’s atmosphere since the last ice age. This 75% rise in CO 2 concentration increased grain yields more than 200% under well‐watered conditions and by 80–150% when wheat was grown without additions of water during the last half of the 100‐day growing season. The 27% increase in CO 2 from the pre‐industrial level of 150 years ago (275 μmol mol –1 ) to near the current concentration (350 μmol mol –1 ) increased grain yields of ‘Yaqui 54’ and ‘Seri M82’ spring wheats by 55% and 53%, respectively, under well‐watered conditions. Yield increased because of greater numbers of grains per spike, rather than heavier grains or numbers of spikes per plant. Water use increased little with CO 2 concentration, resulting in improved water use efficiency as CO 2 rose. Data suggest that rising CO 2 concentration contributed to the substantial increase in average wheat yields in the U.S. during recent decades." @default.
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- W1983403713 date "1997-06-01" @default.
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- W1983403713 title "Yield of wheat across a subambient carbon dioxide gradient" @default.
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- W1983403713 doi "https://doi.org/10.1046/j.1365-2486.1997.00074.x" @default.
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