Reação de variedades e clones de laranjas a Xylella fastidiosa

Souza, Paulo Sergio de; Goes, António de; Stuchi, Eduardo Sanches; Jaimes, Elena Paola González; Wickert, Ester; Silva, Simone Rodrigues da; Donadio, Luiz Carlos

doi:10.1590/s0100-29452006000100040

Cited by 6 publications

(7 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…An example of cross-breedings is the one between the Pera sweet orange, which is CVC susceptible and resistant to Alternaria brown spot with Murcott tangor or Cravo mandarin, both resistant to CVC, and Murcott tangor susceptible to Alternaria brown spot (Oliveira et al, 2002;Bastianel et al, 2004;Souza et al, 2006;Machado, Cristofany-Yaly, & Bastianel, 2011;Figueiredo et al, 2012;Pacheco et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Sensory Analysis of New Varieties of Citrus as a Complementary Strategy to the Brazilian Citriculture

Castro¹,

Mauricio²,

Cristofani–Yaly³

et al. 2013

JAS

View full text Add to dashboard Cite

In Brazil new varieties of citrus were selected along the years, but none sensory analysis is usually made to verify the acceptance as one of the bottleneck for fresh citrus juice industry and before the commercial release. We have evaluated the response of consumers (n=62) for eight new hybrids of the crossing between sweet orange and mandarin in five sensory attributes and used analysis of variance Tukey's procedure (HSD) and internal preference mapping for the data processing. The results were compared in relation to their standard physical-chemical characteristics and with commercial varieties: Murcott tangor (Citrus sinensis (L.) Osbeck x Citrus reticulata Blanco), Pera sweet orange (Citrus sinensis (L.) Osbeck, Cravo mandarin (Citrus reticulata Blanco). Hybrids TM x LP 222 and TC x LP 5 are candidates to become variety and TM x LP 94 was chosen for new sensory analysis. Flavor featured as the most important parameter for orange juice and some hybrids with adequate physical-chemical parameters presented low acceptance, while others with inadequate parameters showed good acceptability, what suggests a new way to fruit selection.

show abstract

Section: Introductionmentioning

confidence: 99%

Sensory Analysis of New Varieties of Citrus as a Complementary Strategy to the Brazilian Citriculture

Castro¹,

Mauricio²,

Cristofani–Yaly³

et al. 2013

JAS

View full text Add to dashboard Cite

show abstract

“…We did not observe any differences on symptoms in the plants single (Nav1) or doubly infected (Nav5 and Nav6) by HSVd and CDVd. According to Vernière et al (2004;2006), the only visible effect caused by CDVd in single infections is the dwarfing on the infected trees, that has pointed CDVd as the most promising agent to control citrus tree size without inducing other undesirable effect in the plants. However, antagonistic interactions between CEVd and CDVd or CBLVd and CDVd were observed in Clementines trees grafted on trifoliate orange (Vernière et al, 2006).…”

mentioning

confidence: 99%

“…In the field, citrus trees are naturally co-infected with a mixture of viroid species, that can result in antagonistic or synergistic effects depending on viroid species or viroid variants interactions (Vernière et al, 2004;2006). 'Etrog' citron when co-inoculated with CBLVd, HSVd and CDVd showed a synergistic effect (Duran-Vila et al, 1988), while, conversely, cachexia sources of HSVd co-inoculated with other viroid combinations masked the typical symptoms on the 'Parson's Special' mandarin indicator plants, indicating an antagonistic effect (Pina et al, 1991).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Identification and characterization of viroids in 'Navelina ISA 315' sweet orange

Eiras

Silva

Stuchi

et al. 2013

Trop. plant pathol.

View full text Add to dashboard Cite

To date, seven species of viroids have been described infecting Citrus. However, only Citrus exocortis viroid (CEVd), Hop stunt viroid (HSVd) and Citrus dwarfing viroid (CDVd) have been reported in this crop in Brazil. The aim of our work was to identify and characterize viroids infecting plants of 'Navelina ISA 315' sweet orange cultivar grafted on 'Rangpur' lime from field experiments located in Bebedouro, SP, that showed gumming in the bark and wood symptoms. Biological indexing was done on the indicator host 'Clemelin 1120' tangor plants that reacted with typical gumming symptoms. Viroid infection was assessed by graft-inoculation of buds from the field trees on 'Etrog' citron plants grafted on 'Rangpur' lime, followed by RNA extraction and sPAGE analysis. RNAs were subjected to RT-PCR with primers for citrus viroids. The full-length amplified products were sequenced and compared to those available in the GenBank. The trees were found to be infected with cachexia (Ca) variants of HSVd-Ca or HSVd-Ca plus CDVd. The results indicate that efforts have to be made to increase and stimulate the indexing programs, to maintain plants healthy and to develop sanitary programs focused on reducing the spread of viroids and other graft-transmissible agents.

show abstract

“…As variedades 'Westin' (meia-estação) e 'Lue Gin Gong' (tardia) são menos afetadas por X. fastidiosa, sem decréscimos significativos à produção POMPEU JÚNIOR, 2002). Por outro lado, há diferenças na severidade da doença entre clones de laranjas doces (LI et al, 1996b;DE NEGRI, 1990;SOUZA et al, 2006). Li; Donadio e Sempionato (1998) verificaram diferenças na susceptibilidade entre clones de laranja 'Natal', em que o clone 'Natal 1' mostrou-se menos afetado entre os outros clones testados.…”

Section: A Clorose Variegada Dos Citros No Brasilunclassified

Avaliação horitcultural da laranjeira 'Folha Murcha', tangerineira 'Satsuma' e limeira ácida 'Tahiti' sobre doze porta-enxertos

Cantuarias-Avilés¹

View full text Add to dashboard Cite

Horticultural evaluation of 'Folha Murcha' sweet orange, 'Satsuma' manadarin and 'Tahiti' lime on twelve rootstocks Brazilian citriculture is mainly based on one rootstock cultivar, the 'Cravo' Rangpur lime, exploring a restricted number of scion cultivars. This situation limits the expansion of citrus production for fresh fruit export, due to the limited number of cultivars in use. Besides, near 80% of citrus orchards are located in an area of approximately 600,000 ha, in the São Paulo State and the southern region of the Minas Gerais State. These facts also impose a large phytossanitary vulnerability to citrus production, due to the increasing threats of pests and diseases outbreaks, that cause productivity decrease and higher costs for orchard establishment and management. The Citrus Variegated Chlorosis (CVC), caused by the xylem-limited bacterium, Xylella fastidiosa, is one example of such threats. This disease is extremely severe in sweet oranges, causing size reduction ad quality deterioration of fruits, that become unsuitable for fresh consume or juice processing. The losses associated to CVC have been recently estimated in 10-14% of the total comercial crop in São Paulo State. CVC management is currently based on the use of healthy nursery plants, pruning of injured branches and control of the vectors. In addition to these strategies, it is important to maintain adequate cultural practices for orchard management. Nonetheless, the utilization of resistant cultivars is an indispensable strategy to co-exist with the disease in the long term. This study was aimed to evaluate the horticultural performance of 'Folha Murcha' sweet orange, 'Okitsu' Satsuma mandarin and 'Tahiti' lime grafted onto twelve rootstocks. 'Okitsu' Satsuma mandarin and 'Tahiti' lime are assymptomatical species in relation to CVC, with potential to be produced in small areas. The 'Folha Murcha' sweet orange has demonstrated high tolerance to CVC, when compared with other sweet orange cultivars. The trials were conducted at the Estação Experimental de Citricultura de Bebedouro, (EECB), and were planted in 2001. Evaluations of plant growth, yield and fruit quality were carried out in all the trials, during three years. In the 'Folha Murcha' trial, additional evaluations of CVC tolerance were conducted. In the non-irrigated trials, tree water deficit tolerance was evaluated by two methods: visual assessment of water stress and direct leaf color measurements. In 'Tahiti' lime, peel color of export fruits was measured and a quantitative methodology was defined as an alternative for current classification criteria, which are based on the subjective visual inspection of external fruit aspect. The horticultural evaluation of 'Folha Murcha' sweet orange, 'Okitsu' Satsuma mandarin and 'Tahiti' lime onto twelve rootstocks allowed to identify the trifoliate rootstocks 'Flying Dragon', 'Rubidoux' and 'FCAV' as alternatives to 'Cravo Limeira'.

show abstract

Reação de variedades e clones de laranjas a Xylella fastidiosa

Cited by 6 publications

References 2 publications

Sensory Analysis of New Varieties of Citrus as a Complementary Strategy to the Brazilian Citriculture

Sensory Analysis of New Varieties of Citrus as a Complementary Strategy to the Brazilian Citriculture

Identification and characterization of viroids in 'Navelina ISA 315' sweet orange

Avaliação horitcultural da laranjeira 'Folha Murcha', tangerineira 'Satsuma' e limeira ácida 'Tahiti' sobre doze porta-enxertos

Contact Info

Product

Resources

About