Ability of graft seedling resistance to blight can reach 100%, while the ability of normal watermelon seedling only reached 82.1%.

Ratio of height and diameter, crown and root, of root cutting seedling were strong with more fibrous root, and higher rate of fungus root infection than untreated normal field seedlings.

At the seedling stage, tac2 displayed normal phenotype and its tiller Angle significantly increased at the tillering stage compared with wild type.