TAIPEI, Taiwan (AP) — Yuan Longping, a Chinese scientist who developed higher-yield rice varieties that helped feed people around the world, died Saturday at a hospital in the southern city of Changsha, the Xinhua News agency reported. He was 91.

Yuan spent his life researching rice and was a household name in China, known by the nickname "Father of Hybrid Rice." Worldwide, a fifth of all rice now comes from species created by hybrid rice following Yuan's breakthrough discoveries, according to the website of the World Food Prize, which he won in 2004.

On Saturday afternoon, large crowds honore...