Seeds Of The New U.S. Winter Wheat Crop Already Sown

Oct 07, 2022

It is planting season for U.S. winter wheat growers. Conditions and timing vary by region, but a lot of the 2023 hard red winter (HRW), soft red winter (SRW) and even fall-seeded soft white (SW) area has already been seeded.

Long before farmers select and clean seed from their last crop or purchase certified seed wheat, researchers and breeders have developed new wheat varieties that meet the highest standards of yield and quality across a wide range of end uses at home and across the world.

U.S. Winter Wheat Planting starts in September and can last into early November depending on conditions. Winter wheat must experience a period of significant cold days to signal reproductive growth, a process called vernalization.

U.S. Winter Wheat Planting starts in September and can last into early November depending on conditions. Winter wheat must experience a period of significant cold days to signal reproductive growth, a process called vernalization.

In a greenhouse at the Kansas Wheat Innovation Center in Manhattan, Kansas State University wheat breeder Dr. Allen Fritz talked about starting the process of creating wheat varieties.

Looking Back to the Future

“There are facilities like this around the country where people are working to improve varieties for those different regions,” he said. “They are working on specific market classes have different functionalities to be able to make almost any kind of wheat food product.”

Dr. Fritz added that to do that work, breeders are finding new ways to use historic wheat genetics to improve wheat quality and production.

“In some projects, we are reaching back into wild relatives and bringing some of those characteristics to bring healthy, nutritious food to the table and I think [breeders] have a passion to bring that forward.”

Naturally Stronger Gluten

At Oklahoma State University, Wheat Genetics Chair Brett Carver and his colleagues are developing new hard red winter wheat varieties that have better gluten strength to produce higher quality bread products while keeping yields and disease resistance high. With naturally developed dough strength, such new varieties may not need additional gluten, adding value to the U.S. wheat and flour produced from it.

“Simply stated, a truly unique combination of wheat quality in a high-performance wheat variety provides value-capturing opportunities to farmers, millers and bakers,” Dr. Carver recently told the High Plains Journal. “It is important that the genetics are maintained and delivered throughout the supply chain in its purest form. Then consumers will see value through a cleaner label on various wheat food products.”

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Video: Can Gene Editing Give Seeds a Stronger Start?

Reagan Reed has a way of describing his research that might make a plant breeder pause.

“I’m the sort of person who likes to break things to understand them,” he says.

What he breaks are genes involved in seed germination. Reed, a Ph.D. candidate at the University of California, Davis, is investigating whether changing those genes can help seeds establish healthy plants under a wider range of conditions.

Reed recently attended the National Association for Plant Breeding meeting in College Station, Texas, as an NAPB Borlaug Scholar. His work speaks to a question that matters well beyond a research lab: what does it take for a seed to get a crop off to a strong start?

A seed that germinates quickly, alongside the others planted with it, spends less time vulnerable to stresses before seedlings become established.

“If you’re able to bridge that gap between germination to stand establishment, then that’s going to give you the highest probability of having a solid yield that year,” Reed says. “There’s a bunch that can go wrong after that, but it maximises your yield from the start, at least.”

Reed works in Dr. Imtiyaz Khanday’s lab at UC Davis, where his research focuses on seed quality in tomatoes and potatoes. He brings an unusual academic background to the work: at Skidmore College, he studied both biology and Latin.

Reed believes that combination prepared him for research. Translating an ancient text means studying each word, weighing its possible meanings and using context to reach the best interpretation. There is rarely a way to know with complete certainty what an author intended. Science, he says, requires a similar willingness to work through uncertainty.

“Attention to detail and comfortability working with uncertainty,” is how he sums up what Latin taught him.

In the lab, uncertainty can produce a surprise. Reed describes changing one gene and seeing little effect. Changing a second gene also appears to do little. Put both changes in the same genetic background, though, and the result can be substantial.

“I break this gene, nothing really happens. I break this other gene, nothing really happens. I combine them into the same genetic background, and now there’s a massive effect,” he says.

Those interactions matter as researchers gain the ability to edit multiple genes at once. They also complicate any simple account of how a trait works: improving a seed may depend on understanding what several genes do together.

For Reed, the question is whether that knowledge could help seeds germinate reliably when conditions are difficult. Some of the genes he studies prevent germination under certain conditions. That response may serve a plant well in one setting while limiting its usefulness in agriculture. He wants to learn what happens when those genes are changed, and whether the result improves establishment.

Yet a discovery that works in a lab still has a long way to travel before it reaches a field. Reed argues that agricultural biotechnology faces an economic challenge as well as a scientific one. New tools can create value for farmers, he says, but developing them requires a way to support the work in an industry where margins can be thin.

His fellowship with Flagship Pioneering gave him a view across AI, agriculture-related work and human health research. It also reinforced the importance of bringing people with different expertise into the same conversation—a benefit of gatherings such as the NAPB meeting.

“You need to have a team of people with different backgrounds who are willing to work together and approach the same problem in different perspectives and different ways,” he says.

That thinking connects the different parts of Reed’s path. Latin taught him to examine details without expecting a perfect answer. Gene editing lets him test what individual genes do—and what happens when their effects combine. Working with people beyond his own field helps him ask what those findings could become.

He came to agriculture because of its reach: the possibility that work by a small group of researchers could eventually make a difference on a much larger scale. His immediate focus is smaller and more precise. He wants to understand what helps a seed get through its first days and become a healthy plant.