Performance of 'Jaffa' sweet orange on different rootstocks for orchards in the Brazilian Northeast

Abstract: The objective of this work was to evaluate the effect of nine rootstocks on 'Jaffa' sweet orange (Citrus sinensis) for its vegetative, productive, and qualitative traits, and for its susceptibility to three pest mites (Eutetranychus banksi, Tetranychus mexicanus and Phyllocoptruta oleivora). The following parameters were evaluated: vegetative growth, yield, physiochemical characteristics of fruit, and density of pest mites. 'Sunki Tropical' mandarin conferred high cumulative yields whereas 'Orlando' tangelo and 'Rugoso Vermelho' lemon imparted bigger fruit with low brix, and less acidity to 'Jaffa'. Indio and 'Riverside' citrandarins induced more acid fruit of smaller sizes, as well as low-cumulated yields and canopy volumes. Also, the 'Cravo Santa Cruz' lime, 'San Diego' citrandarin, and the hybrids HTR-051 and LVK x LCR-010 conferred lower-cumulated yields to 'Jaffa'. The rootstocks did not influence the population levels of the evaluated mites. 'Sunki Tropical' mandarin, 'Cravo Santa Cruz' lime and 'Rugoso Vermelho' lemon stand up as excellent rootstock options for 'Jaffa' sweet orange in the Northeastern Brazil.

摘要：本研究旨在评估9种砧木对'Jaffa'甜橙（Citrus sinensis）的营养生长、生产性能与品质性状的影响，以及其对三种害螨（Eutetranychus banksi、Tetranychus mexicanus和Phyllocoptruta oleivora）的易感程度。本研究评估的指标包括营养生长量、产量、果实理化特性以及害螨种群密度。结果显示，'Sunki Tropical'宽皮橘（'Sunki Tropical' mandarin）可使'Jaffa'甜橙获得较高的累计产量；'Orlando'橘柚（'Orlando' tangelo）与'Rugoso Vermelho'柠檬（'Rugoso Vermelho' lemon）可使果实体积更大，且可溶性固形物含量（Brix）更低、酸度更弱。'Indio'与'Riverside'枳橙（citrandarin）则会诱导结出酸度更高、体积更小的果实，同时累计产量与树冠体积均较低。此外，'Cravo Santa Cruz'酸橙（'Cravo Santa Cruz' lime）、'San Diego'枳橙（'San Diego' citrandarin）以及杂交种HTR-051与LVK x LCR-010均会降低'Jaffa'甜橙的累计产量。砧木对本次评估的三种害螨的种群密度无显著影响。综上，'Sunki Tropical'宽皮橘、'Cravo Santa Cruz'酸橙以及'Rugoso Vermelho'柠檬可作为巴西东北部地区'Jaffa'甜橙的优良砧木选择。