Abstract: ‘Yuyuan Kaixuan’ is a new medium maturity hybrid. It has 105 days of the whole growth period and 33 days of fruit developing period. The hybrid has ovalshaped fruits with fruit index 1.43, green stripe skin and high tolerance to store and transport. Its red fresh with 12.44% central soluble solid content has best tasting, excellent quality and superior commercial character. An average watermelon weighs 7-8 kg and the average output is 60 000 kg/hm².The seed is rough and brown and the 1 000-grain weight 68 g.

Key words: Watermelon, Hybrid