PROBLEM TO BE SOLVED: To obtain a tomato graft seedling efficiently obtainable without taking a scion variety for a rootstock variety during raising of seedling and grafting operation, and to provide a tomato for a rootstock, to be used for the tomato graft seedling. SOLUTION: This stable tomato graft seedling without uselessness is obtained by using for a rootstock a tomato with a stem color different from that of a scion. As for the tomato for a rootstock, a tomato, which has a stem in a seedling stage which does not substantially contain an anthocyanin pigment, and a stem color in a tomato seedling stage which belongs to 1GY, 3GY, 5GY, 7GY or 10GY in the color code of The Japan Color Standard for Horticultural Plants, is used.
