Vijay Kumar Tiwari didn’t expect to become a hero in the eyes of wheat farmers. But since he and his team at the University of Maryland in Washington, D.C., identified a gene mutation capable of tripling the number of kernels on a head of wheat, the postcards have rolled in. He has received handwritten notes from farmers cheering him on. “They’ve said, ‘We’ve heard the news, and we are really excited about it.’ Hopefully it translates into farmers’ fields,” said Tiwari, an associate professor of wheat breeding.