A new soybean variety with resistance to soybean cyst nematode (SCN) derived from the breeding line PI 89772 is being released by Syngenta in small quantities in 2020. Syngenta is sharing seed with university researchers and farm cooperators now, and full commercial launch is expected in 2021. “We’re excited about a new soybean variety with a source of SCN resistance derived from breeding lines other than PI 88788 and Peking,” said Melissa Mitchum, molecular nematologist at the University of Georgia and co-leader of The SCN Coalition. “If the new variety has the right combination of resistance genes, it could offer a novel mode of action that shifts SCN populations in a different direction than the PI 88788 breeding line and possibly the Peking breeding line, too.”
USDA researchers originally discovered PI 89772 on an expedition in China back in 1930. Ninety years later, and after nearly 25 years of work by breeder Jose Aponte, Syngenta is releasing the variety under two brand names: Golden Harvest GH2329X and NK Brand S23-G5X.