https://web.archive.org/web/20100613082735/http://worldfoodprize.org/laureates/yuan-spotlight.htm

By 2003, half of China’s rice production area was planted with hybrid rice. Worldwide, 20 percent of rice comes from rice species created by hybrid rice following Yuan’s breakthrough discoveries. In 2007, China’s total rice yield was 500 million tons.

种子不一定是他亲自杂交的，但是技术路线是他实现的。非要挑一个人，他算是当之无愧。

不过当年都是举国体制，屠呦呦拿诺贝尔奖的时候也有说功劳不能一人独占的声音