Effect of Mutual Grafting on the Fruit Quality and Cd Content of Post-grafting Generation of Cherry Tomato

PurposeTo study effects of mutual grafting on the fruit quality and cadmium (Cd) content of post-grafting generation of two varieties cherry tomato cultivars.

MethodPot experiments were conducted by Cd contaminated soil (10 mg/kg), two varieties of cherry tomatoes were mutual grafting, the seeds of the post-grafting generation of the rootstocks and scions were collected and sowed. Yellow CK (yellow not grafted), red CK (red not grafted), yellow stock (yellow is the stock), yellow spike (yellow is the scion), red stock (red is the stock), red spike (red is the scion) and the fruit of post-generation were analyzed.

ResultCompared with yellow CK, the single fruit weight, fruit firmness and internal quality except vitamin C in yellow rootstock were obviously improved by grafting, and the Cd content in yellow rootstock decreased by 15.37%. Compared with red CK, the contents of soluble protein, vitamin C and carotenoid in red rootstock fruit increased by 9.03%, 10.14% and 8.44%, respectively, and the Cd content in fruit decreased by 8.00%.

ConclusionUnder Cd contamination, planting yellow rootstock and red rootstock can both improve fruit quality and reduce Cd accumulation in fruits.