Clemson University scientist Brian Ward and his team harvested about 145 pounds of Purple Straw seed, which was grown from less than half a pound. Credit: Scott Miller / Clemson University ================================================================================================= The first step of an ongoing-process designed to bring a valuable heirloom wheat back from the brink of extinction has been completed with flying colors. Last month, Clemson University scientist Brian Ward and his team harvested about 145 pounds of Purple Straw seed, which was grown from less than half a pound. Purple Straw is the only heirloom wheat to have been cultivated continually in the South from...