New Heat-Tolerant Peanut Genes Could Boost Yields Across the Southeast

Peanut farmers across the southern U.S. are no strangers to heat—but rising temperatures are making it harder for plants to reproduce, threatening yields and profits. Now, Clemson University scientists may have found a way to help.

In a new study, researchers led by molecular breeder Sachin Rustgi identified a small DNA region that helps peanut plants stay productive during heat stress. After studying 72 peanut genotypes from around the world, the team found that certain varieties—like one from Japan—produced healthy pollen even under hot greenhouse conditions.

That’s important because, once temps rise above 86 degrees, peanut pollen often fails to develop, leading to fewer pods and lower yields.

This discovery marks the first time a genetic marker has been tied to pollen viability in peanuts during heat stress. It could help breeders develop heat-tolerant varieties that still produce high-quality, nutritious seeds.

With peanut production playing a major role in the Southeast’s ag economy, researchers say this breakthrough offers real hope for the future. As Rustgi put it, “This study gives us the tools to future-proof peanut crops.”

This information comes from a Clemson News release. You can read more online.