Research, Application Status and Prospect on the Stockscion Interaction Mechanism of Grafted Tomato

Tomato is one of the most important vegetable crops in China with rich nutrition and diverse eating methods, and its yield ranks the first in the world. At present, in many areas of our country, nematodes, fusarium wilt, bacterial wilt and other diseases, and high temperature, drought, water-logging, salinization and other adverse environment for the loss of tomato industry continues to exist. Grafting, as an environmentally friendly technology, is easy to operate and can significantly improve the resistance of tomato to adverse environments, which has great application space in tomato industry in China. In recent years, with the development of related research on grafted plants, the understanding of the healing mechanism, stockscion interaction and traits improvement of grafted plants has gradually deepened. Therefore, this paper summarizes the effects of environmental factors(light, temperature and humidity)and internal factors(affinity and hormones)on the survival and healing of grafted tomato. The influencing factors of grafted plant traits were discussed from the perspectives of genetic material transfer between rootstock and scion, gene and protein expression. The application potential of grafted tomato was discussed from the perspectives of drought resistance, heat resistance, salt resistance and disease resistance, and the commercial potential of grafted tomato was analyzed from the aspects of yield and quality, with a view to provide references for the application of grafting technology in the production of tomato industry, and some problems existing in the current grafted tomato industry were prospected.