Abstract: ‘Ouzhen 1’is a new tomato rootstock cultivar,which was bred through hybridization using the inbred line HQ2014-1 as the female parent and HK2014-1 as the male parent. It is infinitely growing and has vigorous growth potential. The fruit is oblate with green shoulders and red when ripe. The average fruit weight is 37.8 g,and the number of ventricles was 2-3. The content of vitamin C is 168 mg · kg^-1,soluble solid content is 4.5%,and lycopene content is 44.2 mg · kg^-1. The cultivar is highly resistant to bacterial wilt,fusarium wilt,and tobacco mosaic virus,and moderately resistant to root-knot nematode. It is suitable as a grafting rootstock in the autumn delay and overwintering cultivation of tomato in Wenzhou,Zhejiang,harboring excellent compatibility（with a survival rate of 98.5% for the grafted plants）.

Key words: tomato, rootstock, cultivar