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- Author:
- Khefifi, Hajer; Ben Mimoun, Mehdi; Morillon, Raphael; Luro, Francois
- Source:
- Acta horticulturae 2015 no.1065 pp. 1197-1201
- ISSN:
- 0567-7572
- Subject:
- acidity; clementines; environmental factors; evolution; fruit drop; fruit maturity; fruit pulp; fruiting; hybrids; juices; mandarins; oranges; peduncle; ripening; sugars; total soluble solids; Corsica; Spain
- Abstract:
- ... Citrus fruit development and ripening are complex processes involving physiological and biochemical changes that are under hormonal, nutritional and environmental control. One of the most evident phenomena in late maturation is shedding of ripe fruit. A study made in Spain on sweet oranges showed that fruit shedding was related to the increase of sugars content of fruit pulp juice. To investigate ...
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- Author:
- Carvalho, Sergio Alves de; Latado, Rodrigo Rocha; Silva, Luis Fernando Carvalho; Muller, Gerd Walter
- Source:
- Acta horticulturae 2015 no.1065 pp. 281-291
- ISSN:
- 0567-7572
- Subject:
- Citrus tristeza virus; agronomic traits; clones; fruit quality; fruit yield; mutation; oranges; soil; temperature; vigor; Brazil
- Abstract:
- ... âPeraâ sweet orange, one of the most important Brazilian sweet orange varieties, is high susceptible to Citrus tristeza virus (CTV), causing reduced yield and fruit quality. The âIACâ clone, pre-immunized with a mild protective CTV isolate (âPIACâ), is the most cultivated clone, but several other clones derived from spontaneous mutations have been selected. The agronomic performance of ...
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- Author:
- Scherrer-Montero, Candiada R.; Santos, Liege C. dos; Andreassa, Cristiane S.; Schwarz, Ligia L.; S. Bender, Stefan da; Bender, Renar J.
- Source:
- Acta horticulturae 2015 no.1065 pp. 1621-1626
- ISSN:
- 0567-7572
- Subject:
- Penicillium; chlorine dioxide; cold storage; fungi; heat; heat treatment; imazalil; pathogens; postharvest diseases; postharvest treatment; potassium sorbate; sodium bicarbonate; storage quality; tangerines; temperature
- Abstract:
- ... Penicillium spp. fungi are the most frequent pathogens associated to postharvest decay in citrus fruit. Pre- and postharvest chemical sprays are the most widespread methods to reduce decay incidence, but alternative substances have been reported as promising substitutes for postharvest treatments. Here we evaluated the effects of different combinations of sodium bicarbonate and potassium sorbate a ...
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- Author:
- Alos, Enriqueta; Legaz, Pedro; Rodrigo, Maria Jesus; Zacarias, Lorenzo
- Source:
- Acta horticulturae 2015 no.1065 pp. 735-741
- ISSN:
- 0567-7572
- Subject:
- Citrus sinensis; antioxidants; ascorbic acid; biochemical pathways; biosynthesis; cells; citrus fruits; fruit pulp; galactose; genes; human nutrition; myo-inositol; tissues
- Abstract:
- ... Citrus fruits are widely recognized by their concentration of vitamin C and therefore as one of the major sources of ascorbic acid (AsA) for human nutrition and health. Moreover, AsA is the most abundant antioxidant in plant cells and plays important roles in many developmental and stress processes. The biosynthesis of AsA in higher plants has been elucidated recently and to date four, somehow int ...
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- Author:
- Abe, Akiha; Uchida, Asuka; Hoshino, Yoichiro; Sakakibara, Yoichi; Suiko, Masahito; Kunitake, Hisato
- Source:
- Acta horticulturae 2015 no.1065 pp. 1267-1274
- ISSN:
- 0567-7572
- Subject:
- Citrus; F-box proteins; Rosaceae; Solanaceae; genes; loci; pollen; pollen tubes; protein synthesis; proteome
- Abstract:
- ... To analyze the protein expression of pollen grains and tubes having self-incompatible reactions in Hyuganatsu (Citrus tamurana Hort. ex Tanaka), we cultured mature pollen and treated it with crude extracts from the styles using a mass or single liquid culture system, and we collected pollen grains and tubes for proteome analysis. The relative expression of each identified protein was quantified by ...
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- Author:
- Snoussi-Trifa, Hager; Duval, Marie France; Garcia-Lor, Andres; Perrier, Xavier; Jacquemoud-Collet, Jean Pierre; Navarro, Luis; Ollitrault, Patrick
- Source:
- Acta horticulturae 2015 no.1065 pp. 147-154
- ISSN:
- 0567-7572
- Subject:
- Citrus aurantium; basins; breeding; crop production; environmental factors; genetic recombination; genetic variation; heterozygosity; lemons; microsatellite repeats; oranges; phenotypic variation; rootstocks; somatic mutation; Mediterranean region; Tunisia
- Abstract:
- ... Breeding and selection of new citrus rootstocks is very important in the Mediterranean Basin because citrus faces increasing biotic and abiotic constraints. In Tunisia, citrus contributes significantly to the national economy, and increases in the citrus production area are favored by natural conditions and economic considerations. Sour orange, the most widespread rootstock of the Mediterranean ar ...
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- Author:
- Etxeberria, Ed; Narciso, Cody
- Source:
- Acta horticulturae 2015 no.1065 pp. 891-897
- ISSN:
- 0567-7572
- Subject:
- cortex; root systems; greening disease; callose; cell walls; sieve elements; trees; carbon; scanning electron microscopy; petioles; Citrus
- Abstract:
- ... Phloem cells from HLB-affected trees become obstructed with callose and P-protein plugs. The presence of these plugs is believed to hinder the translocation of photoassimilates (nitrogenous and reduced carbon compounds) to the root system. However, even with seemingly collapsed phloem tissue, citrus trees remain viable and produce fruit for some time, suggesting the incomplete plugging of phloem e ...
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- Author:
- Torrisi, Biagio; Trinchera, Alessandra; Roccuzzo, Giancarlo; Allegra, Maria; Sequi, Paolo; Epifani, Rosanna; Marcucci, Andrea; Intrigliolo, Francesco; Rea, Elvira
- Source:
- Acta horticulturae 2015 no.1065 pp. 1731-1738
- ISSN:
- 0567-7572
- Subject:
- Citrus aurantium; Citrus sinensis; abiotic stress; calcareous soils; chlorosis; crops; fertilizers; fruit trees; iron; laboratory techniques; leaves; meat meal; mixing; nutrient availability; nutrients; plant growth; roots; rootstocks; vinasse; vines; Mediterranean region
- Abstract:
- ... The aim of the present paper was to investigate the agronomical responses of a fertilizer able to release nutrients on the basis of plant-demand, glass-matrix based fertilizer (GMF). Nutrient release was stimulated by mixing the glass-matrix with organic components such as digested vine vinasse (DVV) or meat-meal (MM), added with the aim to increase GMF biological affinity toward roots. Laboratory ...
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- Author:
- Fallanaj, Frida; Sanzani, Simona M.; Youssef, Khamis; Zavanella, Ciro; Salerno, Mario G.; Ippolito, Antonio
- Source:
- Acta horticulturae 2015 no.1065 pp. 1599-1606
- ISSN:
- 0567-7572
- Subject:
- Citrus; Penicillium digitatum; Pseudomonas; anti-infective properties; bacteria; chlorine; disinfection; electrodes; electrolysis; fungal spores; pathogens; tap water
- Abstract:
- ... The efficacy of thin-film diamond coated electrodes (DiaCell 101) for disinfection of water artificially contaminated with Penicillium digitatum and Pseudomonas spp. was tested. Electrolysis process was performed with different operation conditions: current densities set at 4, 8, and 12A and water flow rate at 150, 300, and 600 L/h. For both pathogens, the experiments were performed in water suspe ...
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- Author:
- Fattah, Ahmed A.; Valentini, Franco; Frasheri, Diana; D'Onghia, Anna M.; Djelouah, Khaled
- Source:
- Acta horticulturae 2015 no.1065 pp. 857-860
- ISSN:
- 0567-7572
- Subject:
- Citrus; DNA; DNA primers; Spiroplasma citri; basins; crop production; polymerase chain reaction; proteins; repetitive sequences; semiarid zones
- Abstract:
- ... Citrus stubborn disease caused by Spiroplasma citri is a limiting factor for citrus production in countries with desert or semi-arid conditions in the Mediterranean basin. In order to develop a PCR assay specific and sensitive for detecting Mediterranean S. citri strains, three new PCR primers were designed based on repetitive sequences annotated as âHypothetical proteinsâ. The primer pairs we ...
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- Author:
- Ruiz-Ruiz, Susana; Navarro-Lopez, Josep; Moreno, Pedro; Ambros, Silvia
- Source:
- Acta horticulturae 2015 no.1065 pp. 799-807
- ISSN:
- 0567-7572
- Subject:
- Citrus tristeza virus; control methods; evolution; inoculum; nucleic acids; oranges; reverse transcriptase polymerase chain reaction; tissues
- Abstract:
- ... Measures to control damage caused by severe stem pitting strains (SP) of Citrus tristeza virus (CTV) include selective eradication and cross protection with mild strains (MS). Implementation of these measures needs sensitive and specific methods to discriminate between SP and MS variants in the viral populations. We developed a quantitative real-time RT-PCR method using Taqman locked nucleic acid ...
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- Author:
- Ercisli, Sezai; Uzun, Aydin; Yilmaz, Kadir Ugurtan; Sengul, Memnune; Yildiz, Hilal; Uysal, Onur
- Source:
- Acta horticulturae 2015 no.1065 pp. 1471-1474
- ISSN:
- 0567-7572
- Subject:
- Citrus bergamia; antioxidant activity; antioxidants; beta-carotene; bleaching; calcium; citrates; citric acid; fruits; jams; juices; nutrient content; phenols; tea
- Abstract:
- ... Bergamot extract is used to obtain fragrant tea (Earl Grey) and also its rind is used to make some jams. Calcium citrate and citric acid can be obtained from bergamot juice. In the study, antioxidant and total phenolic content of bergamot juice were determined. Two methods, namely β-carotene bleaching and DPPH assay were used to determine total antioxidant capacity, while FolinâCiocalteu reagen ...
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- Author:
- Tormo, Daniel J.; Sdiri, Sawsen; Conesa, Ernesto; Navarro, Pilar; Salvador, Alejandra
- Source:
- Acta horticulturae 2015 no.1065 pp. 1655-1661
- ISSN:
- 0567-7572
- Subject:
- triclopyr; ethylene; clementines; low volume spraying; auxins; color; degreening; Citrus; calyx
- Abstract:
- ... Postharvest degreening treatment with exogenous ethylene application is widely used in Mediterranean growth area to improve the external coloration of the early-season citrus varieties in which internal maturity is achieved when the peel is still green. Nevertheless this treatment can induce physiological disorders overall related to calyx senescence. In previous studies it has been reported that ...
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- Author:
- Juarez, Jose; Aleza, Pablo; Navarro, Luis
- Source:
- Acta horticulturae 2015 no.1065 pp. 635-642
- ISSN:
- 0567-7572
- Subject:
- Citrus; cultivars; genetic transformation; genome; genotype; haploidy; nursery crops; pathogens; planting; seedless varieties; shoots; somatic hybridization; tetraploidy; transgenic plants; trees; triploidy; Spain
- Abstract:
- ... The main application of shoot-tip grafting in vitro (STG) is to control graft-transmissible pathogens that requires the use of healthy trees in the new plantings. The routine application of STG using 0.1-0.2 mm shoot tips is very efficient for elimination of all citrus graft-transmissible pathogens from local or imported varieties. It has allowed the recovery of hundreds of healthy cultivars and t ...
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- Author:
- Hendrichs, Jorge; Reyes, Jesus; Vreysen, Marc; Cardoso-Pereira, Rui
- Source:
- Acta horticulturae 2015 no.1065 pp. 67-72
- ISSN:
- 0567-7572
- Subject:
- Internet; buildings; business enterprises; community service; ecosystems; electricity; fruit flies; fuels; habitats; households; insect control; insect pests; insecticides; integrated pest management; livestock; municipal solid waste; people; planning; plant pests; public health; roots; schools; sewage; sustainable technology; vector-borne diseases
- Abstract:
- ... In earlier times, each extended family satisfied its needs for essential services such as water, fuel, lighting and sewage disposal independently of its neighbours. The desire for more effective and efficient delivery of these services transformed them from âlocalâ to âarea-wideâ (AW) supply of clean water and the collection of the garbage and disposal of sewage. Today, AW services (e.g. e ...
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- Author:
- Ekesi, Sunday
- Source:
- Acta horticulturae 2015 no.1065 pp. 1117-1124
- ISSN:
- 0567-7572
- Subject:
- Aleyrodidae; Bactrocera invadens; Citrus sinensis; Thaumatotibia leucotreta; Trioza erytreae; coasts; crop production; fruit flies; fruits; insect pests; integrated pest management; leaves; orchards; plant pests; species diversity; Kenya
- Abstract:
- ... Studies were conducted at Lukore, Coast province (January 18-July 18, 2012) and Maranjau, Central province (November 15, 2011-March 15, 2012) of Kenya, both representing a lowland and highland citrus production locality, respectively, to assess the composition and abundance of arthropod pests on Citrus sinensis. In Lukore, although a diverse complex of insect pest was found attacking foliage, infe ...
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- Author:
- Juan-Blasco, Maria; Argiles, Rafael; Jacas, Josep A.; Castanera, Pedro; Urbaneja, Alberto; Sabater-Munoz, Beatriz
- Source:
- Acta horticulturae 2015 no.1065 pp. 1003-1008
- ISSN:
- 0567-7572
- Subject:
- Ceratitis capitata; integrated pest management; males; progeny; sterile insect technique
- Abstract:
- ... Autocidal control of the Mediterranean fruit fly, Ceratitis capitata (Wiedemann) (Diptera: Tephritidae), has become the cornerstone of area-wide integrated pest management programs in many countries. In this technique a critical point is the mating success of released sterile males which should contribute to reduce wild populations. Till this moment the evaluation of mating success is not performe ...
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- Author:
- Pons, Elsa; Navarro, Antonio; Ollitrault, Patrick; Pena, Leandro
- Source:
- Acta horticulturae 2015 no.1065 pp. 711-718
- ISSN:
- 0567-7572
- Subject:
- Citrus; commercialization; cultivars; environmental exposure; environmental impact; field experimentation; genetic markers; genetically modified organisms; genotype; issues and policy; loci; microsatellite repeats; paternity; pollen; pollination; progeny; seeds; transgenes; trees
- Abstract:
- ... Despite potential benefits granted by genetically modified (GM) citrus trees, their release and commercialization raises concerns about their potential environmental impact. The transfer via pollen of transgenes to cross-compatible cultivars is deemed to be the greatest source for environmental exposure. In this work, three different citrus genotypes carrying the uidA (GUS) tracer marker gene (pol ...
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- Author:
- Cuenca, Jose; Aleza, Pablo; Navarro, Luis; Ollitrault, Patrick
- Source:
- Acta horticulturae 2015 no.1065 pp. 433-438
- ISSN:
- 0567-7572
- Subject:
- Citrus; alleles; cost effectiveness; genetic markers; genotyping; polymerase chain reaction; single nucleotide polymorphism; triploidy
- Abstract:
- ... Estimation of allele copy numbers for molecular markers has long been considered a challenge for polyploid species, while this process is essential for most genetic research. With the increasing availability and whole genome coverage of SNP markers, it is important to implement a versatile SNP genotyping method to efficiently assign allelic configuration in polyploids. This work demonstrates the u ...
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- Author:
- Sauer, Aline V.; Santos, Elisangela M.; Goncalves-Zuliani, Aline M. O.; Nocchi, Paula T. R.; Nunes, William M. C.; Bonato, Carlos M.
- Source:
- Acta horticulturae 2015 no.1065 pp. 931-936
- ISSN:
- 0567-7572
- Subject:
- Citrus aurantium; Cymbopogon winterianus; Foeniculum vulgare; Ocimum gratissimum; Pinus elliottii; Xanthomonas citri subsp. citri; agar; antibacterial properties; basil; control methods; enzyme-linked immunosorbent assay; essential oils; fennel; minimum inhibitory concentration; pathogens; pesticides; pollution
- Abstract:
- ... Xanthomonas citri subsp. citri, the causal agent of citrus canker, is a pathogen difficult to control. Excessive use of pesticides has caused environmental contamination and has resulted in the selection of resistant strains of many pathogens, so the search for alternative control methods is of great importance. Several essential oils have shown bactericidal activity. The objective of this researc ...
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