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Drought And Heat Tolerance In Bread Wheat Landraces

By Sarah McLaughlin

Climate change is predicted to cause losses of more than 20% in agricultural production by 2050. With a growing global population, crops adapted to the effects of climate change, such as drought and heat, are necessary for the maintenance of productivity levels to meet the demand for food.

Scientists from the International Maize and Wheat Improvement Center (CIMMYT), in collaboration with scientists from the Universidad Autónoma Agraria Antonio Narro, set out to analyze bread wheat landrace traits against seven climactic variables: mean temperature, maximum temperature, precipitation, precipitation seasonality, heat index of mean temperature, heat index of maximum temperature, and drought index. 

Based on a sample of 990 bread wheat landraces from the CIMMYT genebank, the study discovered proteins associated with tolerance to drought and heat. With these results, new genotypes with resistant alleles can be selected for breeding programs to produce resistant varieties adapted to extreme environments and the effects of climate change.

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Kansas Wheat Harvest 2026 | Three John Deere S7 700 Combines in Action

Video: Kansas Wheat Harvest 2026 | Three John Deere S7 700 Combines in Action

Kansas Wheat Harvest 2026 is underway near Alden, Kansas!

In this video, I spend time with Frederick Harvesting, a custom harvesting operation based in Alden, Kansas. Back at their home farm, three new John Deere S7 700 combines equipped with John Deere HDF40 draper heads work through a drought-stricken winter wheat crop while one of the farm's John Deere 8R 370 tractors pulls a Brent 1398 grain cart.

Most of the Frederick Harvesting crew was already busy cutting wheat in southwest Kansas, but these machines remained at home to finish up local fields. Throughout the video, I explain what is happening, discuss the effects of dry conditions on the crop, and capture plenty of aerial footage showing the combines working with the grain elevator at Alden in the background.