Abstract
Although grafting is an old and common horticultural technique, influence of rootstock on postharvest quality is poorly understood. Rootstocks influence the scion development in several ways, affecting the traits of agricultural interest, such as vegetative vigor, stress tolerance, yield, fruit quality, and so forth. Based on a consistent body of literature, this chapter attempts to elucidate some of these influences, especially on quality. Despite the incongruence in literature that may arise from the differences in terms of species, cultivars, rootstock combination, climates and the biological control of dwarfism, rootstocks are decisive for size, acidity, color, and firmness of the fruit. Some of these effects are indirect or secondary. The analysis of rootstock effect is extended to proteomics and the transfer of epigenetic information.
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