Behavior of some citric fruit on different rootstocks, in their third growing season, Quillón, VIII Region, Chile

Fruit yield and quality were evaluated on one mandarin cultivar ( Citrus reticulata Blanco), three orange ( Citrus sinensis L. Osbeck) cultivars and two lemon ( Citrus limon L. Burmann) cultivars on different rootstocks in a cold region (Quillón, Chile) in their third season of growth. There was a moderate influence of rootstocks on fruit quality, but not on yield. Thus, Troyer induced lower fruit quality in mandarin cv. Clementina than Carrizo and Citrumelo, nevertheless, it was not significant due to the scarce production per tree in this season. In orange cv. Newhall, Rubidoux induced higher yield than Troyer and Carrizo, the latter induced a higher soluble solid content. Salustiana on Carrizo achieved greater juice content and a thicker pericarp, but with less production than Troyer. Carrizo y Rubidoux did not influence the quality of orange cv. Valencia. Citrumelo induced just a higher yield than Flying Dragon in lemon cv. Limoneira 8A being due to the latter having a smaller tree size due to its dwarfing character. The lemon cv. Génova grafted on Macrophylla was seriously affected by frost, being the only treatment with this problem