‘Navelina’ sweet orange trees on five rootstocks in Northern Parana state, Brazil

Cruz, Maria Aparecida da; Neves, Carmen Sílvia Vieira Janeiro; Carvalho, Deived Uilian de; Colombo, Ronan Carlos; Leite, Rui Pereira; Tazima, Zuleide Hissano

doi:10.1590/0100-29452019006

Cited by 11 publications

(13 citation statements)

References 22 publications

(35 reference statements)

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“…Trees grafted on these two rootstocks usually bear fruits at an early stage ( Castle and Stover, 2000 ; Bowman and Joubert, 2020 ). This finding is in agreement with those reported for other citrus cultivars as “Okitsu” satsumas and “Oneco” mandarins, and the “Jaffa,” “Navelina,” and “Salustiana” sweet oranges ( Gonzatto et al, 2011 ; Tazima et al, 2013 ; Bacar et al, 2017 ; Cruz et al, 2019 ; Carvalho et al, 2021 ). Rootstocks that induce early fruiting to the citrus trees are preferable, especially under the current HLB situation.…”

Section: Discussionsupporting

confidence: 92%

“…The highest TDB/TDA ratios of the “Emperor” trees were observed for those on “Swingle” citrumelo and “Fepagro C-13” citrange ( Table 1 ). Similar TDB/TDA ratios were reported for other mandarins and sweet oranges grafted on the same rootstocks, such as “Marisol” clementine ( Bassal, 2009 ), “Navelina” sweet orange ( Cruz et al, 2019 ), and “Okitsu” satsuma mandarin ( Tazima et al, 2013 , 2014 ). However, the differences in trunk diameters between scion and rootstock may not be related to graft-incompatibility in some cases and may not always influence the horticultural performance of the scion ( Fadel et al, 2018 ).…”

Section: Discussionsupporting

confidence: 76%

“…Trees on “Swingle” citrumelo grow vigorously and show a trunk overgrowth near to the grafting union ( Castle et al, 1988 ). Similar overgrowth has been observed for “Okitsu” satsuma mandarin and “Navelina,” “Jaffa,” “Cadenera,” and “Salustiana” sweet orange trees grafted on “Swingle” citrumelo ( Tazima et al, 2013 ; Bacar et al, 2017 ; Domingues et al, 2018 ; Cruz et al, 2019 ; Carvalho et al, 2021 ).…”

Section: Discussionsupporting

confidence: 69%

“…“Swingle” citrumelo has become an alternative for rootstock diversification in several countries globally, including the United States, Spain, and Mexico ( Castle et al, 2010 ; Cruz et al, 2019 ; Bowman and Joubert, 2020 ). Similar to “Rangpur” lime, “Swingle” citrumelo induces early fruiting and is resistant to CTV ( Castle and Stover, 2000 ; Castle, 2010 ).…”

Section: Introductionmentioning

confidence: 99%

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Five Rootstocks for “Emperor” Mandarin Under Subtropical Climate in Southern Brazil

Cruz

Neves²,

Carvalho³

et al. 2021

Front. Plant Sci.

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Rootstocks modulate several characteristics of citrus trees, including vegetative growth, fruit yield and quality, and resistance or tolerance to pests, diseases, soil drought, and salinity, among other factors. There is a shortage of scion and rootstock cultivars among the combinations planted in Brazil. “Ponkan” mandarin and “Murcott” tangor grafted on “Rangpur” lime comprise the majority of the commercial mandarin orchards in Brazil. This low genetic diversity of citrus orchards can favor pest and disease outbreaks. This study aimed to evaluate the agronomic performance, Huanglongbing (HLB) tolerance, and fruit quality of “Emperor” mandarin on five different rootstocks for nine cropping seasons under the subtropical soil-climate conditions of the North region of the state of Paraná, Brazil. The experimental design was a randomized block, with six replications, two trees per block, and five rootstocks, including “Rangpur” lime, “Cleopatra,” and “Sunki” mandarins, “Swingle” citrumelo, and “Fepagro C-13” citrange. The evaluations included tree growth, yield performance, fruit quality, and HLB disease incidence. “Emperor” mandarin trees grafted on “Rangpur” lime and “Swingle” citrumelo had early fruiting and high yield efficiency. “Rangpur” lime also induced the lowest tree growth, but low fruit quality. Trees on “Swingle” citrumelo and “Fepagro C-13” citrange showed low scion and rootstock affinity and produced fruits with high total soluble solids (TSS), with a lower number of seeds for those from trees on “Fepagro C-13” citrange. “Cleopatra” and “Sunki” mandarins induced higher juice content, while fruits from trees on “Cleopatra” also had higher TSS/titratable acidity (TA) ratio. “Emperor” mandarin trees were susceptible to HLB regardless of the rootstocks. Overall, “Cleopatra” and “Sunki” mandarins, “Swingle” citrumelo, and “Fepagro C-13” are more suitable rootstocks for “Emperor” mandarin under Brazilian subtropical conditions than “Rangpur” lime.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 76%

Section: Discussionsupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

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Five Rootstocks for “Emperor” Mandarin Under Subtropical Climate in Southern Brazil

Cruz

Neves²,

Carvalho³

et al. 2021

Front. Plant Sci.

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“…Despite considerable effort toward developing and testing new citrus rootstocks at numerous institutions and citrus growing regions over the past 100 years, inadequate rootstocks are still used for a large portion of world citrus production. Rootstock trials in different regions demonstrate, repeatedly, that trees on some particular rootstocks show better tolerance to disease and stress, and yield more and better quality fruit than other rootstocks (Louzada et al, 2008;Rodriguez-Gamir et al, 2010;Bowman et al, 2016a;Cruz et al, 2019;Kunwar et al, 2021;Singerman et al, 2021). Within a regional rootstock trial, often the best performing rootstocks are not those that are in most common commercial use.…”

Section: Need For Better Rootstocks and A New Strategymentioning

confidence: 99%

SuperSour: A New Strategy for Breeding Superior Citrus Rootstocks

2021

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Citrus crops have a long history of cultivation as grafted trees on selected rootstock cultivars, but all current rootstocks have significant limitations and traditional methods of rootstock breeding take at least 2–3 decades to develop and field test new rootstocks. Citrus production in the United States, and other parts of the world, is impaired by a wide range of biotic and abiotic problems, with especially severe damage caused by the disease huanglongbing (HLB) associated with Candidatus Liberibacter asiaticus. All major commercial citrus scion cultivars are damaged by HLB, but tree tolerance is significantly improved by some rootstocks. To overcome these challenges, the USDA citrus breeding program has implemented a multi-pronged strategy for rootstock breeding that expands the diversity of germplasm utilized in rootstock breeding, significantly increases the number of new hybrids evaluated concurrently, and greatly reduces the time from cross to potential cultivar release. We describe the key components and methodologies of this new strategy, termed “SuperSour,” along with reference to the historical favorite rootstock sour orange (Citrus aurantium), and previous methods employed in citrus rootstock breeding. Rootstock propagation by cuttings and tissue culture is one key to the new strategy, and by avoiding the need for nucellar seeds, eliminates the 6- to 15-year delay in testing while waiting for new hybrids to fruit. In addition, avoiding selection of parents and progeny based on nucellar polyembryony vastly expands the potential genepool for use in rootstock improvement. Fifteen new field trials with more than 350 new hybrid rootstocks have been established under the SuperSour strategy in the last 8 years. Detailed multi-year performance data from the trials will be used to identify superior rootstocks for commercial release, and to map important traits and develop molecular markers for the next generation of rootstock development. Results from two of these multi-year replicated field trials with sweet orange scion are presented to illustrate performance of 97 new hybrid rootstocks relative to four commercial rootstocks. Through the first 7 years in the field with endemic HLB, many of the new SuperSour hybrid rootstocks exhibit greatly superior fruit yield, yield efficiency, canopy health, and fruit quality, as compared with the standard rootstocks included in the trials.

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Fruits and vegetable-processing waste: a case study in two markets at Rio de Janeiro, RJ, Brazil

Nogueira

Silva

Luiz

et al. 2020

Environ Sci Pollut Res

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‘Navelina’ sweet orange trees on five rootstocks in Northern Parana state, Brazil

Cited by 11 publications

References 22 publications

Five Rootstocks for “Emperor” Mandarin Under Subtropical Climate in Southern Brazil

Five Rootstocks for “Emperor” Mandarin Under Subtropical Climate in Southern Brazil

SuperSour: A New Strategy for Breeding Superior Citrus Rootstocks

Fruits and vegetable-processing waste: a case study in two markets at Rio de Janeiro, RJ, Brazil

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