Citrus crop performance and fruit quality in response to different scion-rootstock combinations

Aim of study: To address diversification citrus cultivars to increase the variety and profitability orchards adapt them environmental changes.
 Area State São Paulo, a subtropical region southeastern Brazil.
 Material methods: The study evaluated phenological intervals, thermal sum, vegetative productive performance, fruit quality sweet orange ‘Rubi’ (R), ‘Lue Gin Gong’ (LGG) ‘Valencia Delta Seedless’ (VDS) grafted onto 'Rangpur' lime (RL) 'Swingle' citrumelo (SC). field experiment was conducted over consecutive growing seasons 2018-2021.
 Main results: duration intervals little influenced by rootstocks. harvest time approximately 245 days after anthesis (DAA) for R, 402 DAA LGG, 407 VDS, regardless rootstock. Scion RL showed larger canopy volumes greater weight, length, diameter fruits than those SC trees, combinations with were more productively efficient due lower volume. R scion cultivar presented superior yield performance colouration LGG VDS. physicochemical improved results LGG/RL, LGG/SC, VDS/RL, VDS/SC.
 Research highlights: These may be useful when planning scion/rootstock new orchards, identifying dual-market industrial processing natural consumption, determining that are better adapted undesirable climatic conditions.