Abstract: The experiment was to study the effect of three foreign tomato resistant rootstocks on controlling rootknot nematode disease and on growth and yield of tomato. The result demonstrated that there was high affinity between the three resistant rootstocks and scion (FA189). The survive rate of grafted plants was above 90%. It also showed grafting has no effect on chlorophyll of the plant and quality of the fruit, but delayed the growth of the plant. The three grafted resistant tomato rootstocks successfully controlled the nematode disease. Yields of grafted tomato were enhanced about 15%-20% with high quality and stable mass of fruit than that of nongrafted tomato.

Key words: Tomato, Resistant rootstock, Graft, Rootknot nematode