Abstract
Control of growth, fruit yield and sugar content of fruits were studied by comparing between tomato plants grafted on rootstocks of tomato (Lycopersicon esculentum Mill.) and scarlet eggplant (Solanum integrifolium Poir.). Vegetative growth tended to be depressed and the incidence of blossom end rot of fruits to be increased by grafting on scarlet egg-plant rootstocks. Fruit yield on scarlet eggplant rootstocks was lower than that on tomato rootstocks. Guttation was not observed in plants grafted on scarlet eggplant rootstocks. However, concentrations of leaf chlorophyll and the soluble solids and sugar contents in fruits were all higher in plants grafted on scarlet eggplant than on tomato rootstocks. These results indicate that plants grafted on scarlet eggplant rootstocks are likely in a state of water deficiency.
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