Wheat capable of tolerating higher temperatures developed at Kansas State University

Feb 17, 2015

Wheat kernels known to shrivel up if temperatures get too high

When it comes to farming, weather is one of, if not the most important component to ensure the highest yield possible.

However, when it comes to the weather itself, farmers often find themselves feeling like Goldilocks in the house of the three bears.

“How am I supposed to grow anything without any rain? It needs to stop raining or else I’ll be swimming in my fields! Right there, that’s the perfect amount of rain.”

Or it might go something like this.

“That’s not enough sun! Well now that’s too much. Okay, that’s the perfect amount,” they might find themselves saying.

If the sun and temperature is wreaking havoc on your wheat crops, scientists at Kansas State University may have a solution.

They’re in the process of developing a wheat that can withstand higher temperatures.

“It’s gene therapy for hot temperatures and yield,” Harold Trick, a professor in the Dept. of Plant Pathology told The Topeka Capital-Journal. Trick estimates a 3-4% yield loss for every rise in temperature of 2-3 degrees F.

Wheat’s optimum temperature is between 60 and 65°F (15 – 18°C) but if the temperature should go above 86°F (30°C) the kernels start to shrivel.

When wheat starts to fill, it builds up starch, which is nearly 80% of the dry weight. The starch is a result of a conversion from sucrose.

The enzyme responsible for the conversion is called soluble starch synthase (SSS). It is that enzyme that has a sensitivity to higher temperatures and is the focus of the research.

Early trials have resulted in a 30 – 35% yield increase.

246,400,000 bushels of wheat was planted in Kansas in 2014.

Wheat

Video: Spring weed control in winter wheat with Broadway® Star (pyroxsulam + florasulam)

#CortevaTalks brings you a short update with Cereal Herbicides Category Manager, Alister McRobbie, on how to get the most out of Broadway® Star.

Significant populations of grassweeds, including ryegrass and brome, can threaten winter wheat yields. Spring applications of a contact graminicide, such as Broadway Star from Corteva Agriscience, can clear problem weeds, allowing crops to grow away in the spring.

Broadway Star (pyroxsulam + florasulam) controls ryegrass, sterile brome, wild oats and a range of broad-leaved weeds such as cleavers. It can be applied to winter wheat up until GS32, but the earlier the application is made, the smaller the weed, and the greater the benefit to the crop. Weeds should be actively growing. A good rule of thumb is that if your grass needs cutting, conditions are right to apply Broadway Star.