Information on advances in wheat (Triticum aestivum L.) productivity is essential for genetic improvement on yield potential. Four yield potential trials with totally 59 leading cultivars from Sichuan, Yunnan, Gansu, and Xinjiang, China were conducted using a randomized complete block design with three replications under controlled environments in two successive cropping seasons from 2007 to 2009. The experimental sites were located in Chengdu in Sichuan province, Lijiang in Yunnan province, Wuwei in Gansu ...