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Effects of nitrogen fertilization on fruit quality during storage of spanish ‘piel de sapo’ melon

Sánchez-Bel, Paloma; Flores, Francisco B.; Martínez-Madrid, María Concepción; Martínez-Tébar, Elena; Cabello, María Jesús; Castellanos, María Teresa; Ribas, Francisco; Romojaro, Félix
Fonte: Universidade do Algarve Publicador: Universidade do Algarve
Tipo: Parte de Livro
Publicado em //2010 Português
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Proceedings of the International Conference “Environmentally friendly and safe technologies for quality of fruit and vegetables”, held in Universidade do Algarve, Faro, Portugal, on January 14-16, 2009. This Conference was a join activity with COST Action 924.; The aim of the work is the evaluation of the effect of nitrogen fertilization on fruit quality during postharvest conservation at low temperatures. Melon cultivation was fulfilled at open air with a plastic mulch and drip irrigation (100% of crop evapotranspiration). Nitrogen fertilization was applied at 0, 50, 100 and 150 kg N ha-1. Melon fruits were harvested at 48-50 d (days) after fruit set, and stored at 9±1 ºC and 85 % RH during 10, 20 and 30 d. After each period of conservation colour, firmness, soluble solids, vitamin C and total nitrogen contents from pulp tissue were analysed. The % fruit weight loss was determined too. No influence from the level of nitrogen fertilization on the quality parameters analysed has been detected. As expected, only total nitrogen content in fruit was affected by the different fertilization treatments. During conservation fruit firmness gradually diminished, % weight loss gradually augmented and at the end of storage vitamin C content decreased. The whole set of results showed that melon plant cultivation could be carried out with low levels of nitrogen fertilization without negatively affecting quality during postharvest...

Foliar fertilization with potassium, magnessium and calcium and postharvest fruit quality in plums (prunus domestica l)

Vangdal, Eivind; Flatland, Sigrid; Mehl, Ingvild
Fonte: Universidade do Algarve Publicador: Universidade do Algarve
Tipo: Parte de Livro
Publicado em //2010 Português
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Proceedings of the International Conference “Environmentally friendly and safe technologies for quality of fruit and vegetables”, held in Universidade do Algarve, Faro, Portugal, on January 14-16, 2009. This Conference was a join activity with COST Action 924.; Foliar applications of fertilizers are an important part of standard fertilization programmes in apples to optimize the content of nutrients important to growth and fruit quality. In an experiment in plums (Prunus domestia L.) a foliar fertilization programme was compared to traditional application of fertilizers on the soil. In another experiment extra magnesium, potassium and the combination of both magnesium and potassium were compared to control trees given a standard foliar fertilization programme. Yield and fruit size was registered. Analyses included fruit quality factors, content of major nutrients in fruits and leaves as well as storability. The effects of the different programmes on yield, fruit size and most fruit quality factors were not significant. Fruits from trees given foliar fertilizers had, however, higher content of nitrogen and significantly lower contents of the other major nutrients. The application of extra potassium and magnesium did not increase the level of these elements...

Yield and fruit quality of peach scion by using rootstocks propagated by air layering and seed

Picolotto,Luciano; Fachinello,José Carlos; Bianchi,Valmor João; Manica-Berto,Roberta; Pasa,Mateus da Silveira; Schmitz,Juliano Dutra
Fonte: São Paulo - Escola Superior de Agricultura "Luiz de Queiroz" Publicador: São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2010 Português
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In rootstock propagation, several methods can be used; however few practices are adopted due to the lack of information about the behavior of stionic combinations at field. The work aimed to compare the propagation method by air layering with the traditional propagation system by seeds using the scion peach [Prunus persica (L.) Batsch] cultivar Granada. The following variables were measured: yield, fruit weight and size, skin color, flesh firmness, total soluble solids content (TSS) and titatrable acidity (TA), TSS/TA ratio, total phenols, trunk diameter and pruning mass. Yield, total phenols and titatrable acidity were higher when using the air layering propagation. There was no difference between propagation methods regarding color and diameter of fruit, flesh firmness and total soluble solid and TSS/TA ratio. Depending on propagation method, the fruit weight did not differ, nevertheless using the seed propagated Capdeboscq rootstock fruit weight was heavier. Plant behavior in each propagation method depended on the rootstock used. Scion cultivar (cv.) Granada on air layering rootstock-derived keeps similar or superior yield and same attributes of fruit quality, better than using rootstocks derived from seeds.

Impact of humic substances and nitrogen fertilising on the fruit quality and yield of custard apple

Cunha,Marcelo dos Santos; Cavalcante,Ítalo Herbert Lucena; Mancin,Adriana Cristina; Albano,Francisca Gislene; Marques,Adenaelson Souza
Fonte: Editora da Universidade Estadual de Maringá - EDUEM Publicador: Editora da Universidade Estadual de Maringá - EDUEM
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2015 Português
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The custard apple (Annona squamosa L.), also known as the sugar apple, is a fruit species native to Brazil that has been poorly studied, especially in relation to the effect of humic substances on its fruit quality and yield. An experiment was conducted from December 2010 to November 2011 to evaluate the fruit quality and yield of the custard apple as a function of nitrogen fertilising and the use of humic substances. The experimental design consisted of randomised blocks, with treatments distributed in a factorial arrangement (4 x 2), using four nitrogen doses (0, 100, 175 and 250 g of N plant-1) and two humic substance applications (with and without humic substances), with four replications. The fruit yield and fruit characteristics, such as fruit mass, titratable acidity (TA), soluble solids (SS), pulp pH and SS/TA ratio, were recorded. The humic substances and the nitrogen levels significantly affected the soluble solids, titratable acidity and SS/TA ratio, while the pH pulp was only influenced by the humic substances. The humic substances promoted a quantitative increase in the fruit yield of 0.63 ton ha-1. The fruit quality and yield of the custard apple depend on the nitrogen fertiliser and the interaction of the humic substances. Nitrogen fertilising of 100 g per plant...

Effect of calcium and boron nutrition on grey mould of capsicum (Capsicum annuum L.) and fruit quality.

Le, Thong Duc
Fonte: Universidade de Adelaide Publicador: Universidade de Adelaide
Tipo: Tese de Doutorado
Publicado em //2014 Português
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Capsicum (Capsicum annuum L.) is mostly cultivated in humid and warm conditions, which increases disease development, particularly grey mould caused by Botrytis cinerea. Infection of capsicum fruit by B. cinerea often occurs preharvest but symptoms of grey mould are not usually visible until after harvest making the pathogen difficult to control. Appropriate fertilisation that ensures calcium (Ca) and boron (B) is sufficient in plant tissues, especially in fruit, has been suggested as an alternative to fungicides for disease management. This research studied the infection pathway of B. cinerea and the effect of Ca and B on grey mould development and quality of fruit in two capsicum cultivars (cv. Aries and cv. Papri Queen). Botrytis cinerea infected capsicum preharvest and flowers often died when inoculated at anthesis. The number of dead flowers increased when inoculum concentration increased. The extent of grey mould development on fruit inoculated preharvest was not affected by timing of inoculation [at anthesis, 3 days after anthesis (DAA) or 6 DAA], but was dependent on inoculum concentration and cultivar. When capsicum fruit were inoculated after harvest, grey mould developed most rapidly in red (R) fruit from cv. Aries and breaker red (BR) fruit from cv. Papri Queen. An inoculation of 10⁶ conidia mL¯¹ caused more disease on fruit than 10⁴ or 10⁵ conidia mL¯¹. Cv. Aries was more susceptible to B. cinerea than cv. Papri Queen regardless of whether inoculation occurred before or after harvest. The effect of both soil and foliar application of boron (B)...

Melon fruit quality: a genomic approach

Katzir, N.; Harel-Bega, R.; Protnoy, V.; Tzuri, G.; Koren, E.; Lev, S.; Bar, E.; Tadmor, Y.; Burger, Y.; Lewinsohn, E.; Fei, Z.; Giovannoni, J.J.; Schaffer, A.A.
Fonte: INRA. Centre de Recherche d'Avignon. Unité Génétique et Amélioration des Fruits et Légumes, Montfavet (France) Publicador: INRA. Centre de Recherche d'Avignon. Unité Génétique et Amélioration des Fruits et Légumes, Montfavet (France)
Tipo: Conference Paper
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Genomic resources, including large-scale sequencing, whole genome transcriptome analyses, and fine-scale genetic mapping, enable new insights into entire networks determining fruit quality. Molecular biology was introduced into melon fruit quality studies almost 15 years ago beginning with several breakthroughs: (1) the cloning and knockout of a gene involved in the regulation of fruit ripening, (2) the isolation and characterization of additional genes associated with fruit ripening and quality, and (3) the first genetic map that included molecular markers. Subsequent advances in molecular techniques led to the rapid development of genomic and metabolomic resources for melon and other cucurbits. The impact of this progress on the application to fruit quality improvement is just beginning to emerge. This is an overview of the current knowledge related to some of the major metabolic pathways associated with melon fruit quality and the genomic tools that are being developed.; Cucurbitaceae 2008. IX EUCARPIA Meeting. Avignon (France), May 21-24th, 2008

Near-isogenic lines of melon with different climacteric behavior as a tool to characterize fruit senescence traits

Obando-Ulloa, J.M.; Jowkar, M.M.; Moreno, E.; Souri, M.K.; Dos Santos, N.; Sanmartin, P.; Bueso, M.C.; Kessler, M.; Martinez, J.A.; Alarcon, A.; Nicolai, B.; Lammertyn, J.; Garcia-Mas, J.; Monforte, A.J.; Fernandez-Trujillo, J.P.
Fonte: INRA. Centre de Recherche d'Avignon. Unité Génétique et Amélioration des Fruits et Légumes, Montfavet (France) Publicador: INRA. Centre de Recherche d'Avignon. Unité Génétique et Amélioration des Fruits et Légumes, Montfavet (France)
Tipo: Poster
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Aroma volatiles and fruit quality traits at harvest or after senescence were determined in a collection of near-isogenic lines (NILs) with different climacteric behavior (two non-climacteric NILs more the parental non-climacteric ´Piel de sapo´ and the rest climacteric). Data were analyzed by partial least squares discriminant analysis. In senescent fruit, four ester volatiles (particularly benzyl acetate) helped to discriminate between climacteric and non-climacteric NILs. Aroma volatiles were more efficient for discriminating by senescent or climacteric behavior than fruit quality traits, and flavor traits (dry matter, soluble solids content, titratable acidity, and individual sugars and organic acid content) were more efficient than using other major quality traits (including color, texture, pH, extractable juice and juice density). Particularly flesh firmness was clearly discriminating the fruit of the parental line from the rest either at harvest or after senescence.; Cucurbitaceae 2008. IX EUCARPIA Meeting. Avignon (France), May 21-24th, 2008

Fruit quality of 'Tahiti' lime (Citrus latifolia Tanak) grafted on twelve different rootstocks; Qualidade de frutos de limeira-ácida 'Tahiti' (Citrus latifolia Tanaka) enxertada em doze porta-enxertos

STUCHI, Eduardo Sanches; MARTINS, Antonio Baldo Geraldo; LEMO, Rodrigo Rodas; CANTUARIAS-AVILÉS, Tatiana
Fonte: Sociedade Brasileira de Fruticultura Publicador: Sociedade Brasileira de Fruticultura
Tipo: Artigo de Revista Científica
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In the present work, the effect of twelve rootstocks on fruit quality of the nucellar clone IAC-5 of 'Tahiti' lime, (Citrus latifolia Tanaka) and the influence of fruit position on tree in fruit quality was evaluated in the Citrus Experimental Station of Bebedouro (EECB), located in the Bebedouro county, state of São Paulo, Brazil. A 8.0 x 5.0m planting frame was utilized. The evaluated rootstocks were: 'Carrizo' citrange (C. sinensis (L.) Osbeck x Poncirus trifoliata (L.) Raf.); the hybrids 'Rangpur' lime x 'Swingle' citrumello (C. limonia Osbeck x P. trifoliata Raf) and 'Changsha' x 'English Small'(C. sunki Hort. ex Tan. x P. trifoliata Raf.); the mandarins 'Sun Chu Sha Kat' (C. reticulata Blanco) and 'Sunki' (C. sunki Hort. ex Tanaka); the 'Rangpur' limes 'Cravo Limeira' and ' Cravo FCAV' (C. limonia Osbeck); the 'Swingle' citrumello (P. trifoliata Raf. x C. paradisi Macf.); the 'Orlando' tangelo (C. reticulata Blanco x C. paradisi Macf.) and the trifoliates cvs. 'Rubidoux', 'FCAV' and 'Flying Dragon' (P. trifoliata Raf.). The experiment was arranged in a randomized block design, with twelve treatments, six replicates and one plant per plot. The rootstocks induced differences in fruit quality; however, all the evaluated quality characteristics were within the values considered as normal and acceptable for the variety...

Fruit quality of 'Tahiti' lime (Citrus latifolia Tanak) grafted on twelve different rootstocks

Stuchi,Eduardo Sanches; Martins,Antonio Baldo Geraldo; Lemo,Rodrigo Rodas; Cantuarias-Avilés,Tatiana
Fonte: Sociedade Brasileira de Fruticultura Publicador: Sociedade Brasileira de Fruticultura
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2009 Português
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In the present work, the effect of twelve rootstocks on fruit quality of the nucellar clone IAC-5 of 'Tahiti' lime, (Citrus latifolia Tanaka) and the influence of fruit position on tree in fruit quality was evaluated in the Citrus Experimental Station of Bebedouro (EECB), located in the Bebedouro county, state of São Paulo, Brazil. A 8.0 x 5.0m planting frame was utilized. The evaluated rootstocks were: 'Carrizo' citrange (C. sinensis (L.) Osbeck x Poncirus trifoliata (L.) Raf.); the hybrids 'Rangpur' lime x 'Swingle' citrumello (C. limonia Osbeck x P. trifoliata Raf) and 'Changsha' x 'English Small'(C. sunki Hort. ex Tan. x P. trifoliata Raf.); the mandarins 'Sun Chu Sha Kat' (C. reticulata Blanco) and 'Sunki' (C. sunki Hort. ex Tanaka); the 'Rangpur' limes 'Cravo Limeira' and ' Cravo FCAV' (C. limonia Osbeck); the 'Swingle' citrumello (P. trifoliata Raf. x C. paradisi Macf.); the 'Orlando' tangelo (C. reticulata Blanco x C. paradisi Macf.) and the trifoliates cvs. 'Rubidoux', 'FCAV' and 'Flying Dragon' (P. trifoliata Raf.). The experiment was arranged in a randomized block design, with twelve treatments, six replicates and one plant per plot. The rootstocks induced differences in fruit quality; however, all the evaluated quality characteristics were within the values considered as normal and acceptable for the variety...

Effect of deficit irrigation on apricot fruit quality at harvest and during storage

Pérez-Pastor, A.; Ruiz Sánchez, Mª Carmen; Martínez López, Juan Antonio; Nortes, P. A.; Artés Calero, Francisco; Domingo Miguel, Rafael
Fonte: John Wiley & Sons Publicador: John Wiley & Sons
Tipo: Artículo Formato: 579917 bytes; image/jpeg
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The effect of different irrigation strategies on the fruit quality at harvest and during storage at 1 °C of 'Búlida' apricots (Prunus armeniaca L.) was studied. Irrigation treatments consisted of a control irrigated at 100% of crop evapotranspiration (ETc) throughout the season, and two deficit irrigation treatments consisting of continuous irrigation at 50% of control, and regulated deficit irrigation (RDI) at 100% of ETc during the critical periods (second rapid fruit growth and early post-harvest) and at 25% during the rest of the season. Fruits at harvest from both deficit irrigation treatments showed higher values of total soluble solids (TSS), titratable acidity and hue angle (h°) than control fruits, whereas their diameter, fresh weight, firmness and maturity index values were similar to those in the control. During the first 10 days of the 30-day chilling storage period, higher TSS and h° values were found in deficit irrigated fruits, whilst the other parameters were similar for all treatments. Weight loss and fungal attacks (mainly Rhizopus sp. and Monilinia sp.) during a subsequent retail sale period of 4 days at 13 °C were the lowest in RDI. Deficit irrigation was demonstrated to be commercially advantageous for keeping fruit quality...

Phenotypic diversity and relationships of fruit quality traits in peach and nectarine [Prunus persica (L.) Batsch] breeding progenies

Cantín Mardones, Celia M.; Gogorcena Aoiz, Yolanda; Moreno Sánchez, María Ángeles
Fonte: Springer Publicador: Springer
Tipo: Artículo Formato: 378953 bytes; application/pdf
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The definitive version is available at: http://www.springerlink.com/content/102881/; Agronomic and fruit quality traits were evaluated and compared for three consecutive years on 1,111 seedlings coming from 15 peach and nectarine breeding crosses, grown under a Mediterranean climate. Significant differences among and within the different progenies were found for most of the traits analyzed. The breeding population segregated for several Mendelian characters such as peach or nectarine fruit, round or flat fruit, yellow or white flesh and freestone or clingstone. In addition, aborting fruit and flat fruit trees were found in our progeny, and our data seem to support multi-allelic control of both flat shape and aborting fruit. The variation within the progenies of some traits such as blooming and harvesting date, yield, fruit weight and SSC was continuous, suggesting a polygenic inheritance. Relationships between qualitative pomological traits and these agronomic and fruit quality parameters were also found. Valuable correlations among agronomic and fruit quality parameters were found, although coefficients of variation depending on the progeny should be considered. In addition, principal component analysis (PCA) revealed several relationships among quality traits in the evaluated progenies. Based on this evaluation...

Monitoring Yield and Fruit quality parameters in Open-Canopy Tree crops under Water Stress. Implications for ASTER

Sepulcre-Cantó, G.; Zarco-Tejada, Pablo J.; Jiménez-Muñoz, J. C.; Sobrino, J. A.; Soriano, Mª Auxiliadora; Fereres Castiel, Elías; Vega Macías, Victorino; Pastor, M.
Fonte: Elsevier Publicador: Elsevier
Tipo: Artículo Formato: 4085 bytes; image/gif
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Work on water stress detection at tree and orchard levels using a high-spatial airborne thermal sensor is presented, showing its connection with yield and some fruit quality indicators in olive and peach commercial orchards under different irrigation regimes. Two airborne campaigns were conducted with the Airborne Hyperspectral Scanner (AHS) over olive and peach orchards located in Córdoba, southern Spain. The AHS sensor was flown at three different times on 25 July 2004 and 16 July 2005, collecting 2 m spatial resolution imagery in 80 spectral bands in the 0.43– 12.5 μm spectral range. Thermal bands were assessed for the retrieval of land surface temperature using the split-window algorithm and TES (Temperature-Emissivity-Separation) method, separating pure crowns from shadows and sunlit soil pixels using the reflectance bands. Stem water potential and stomatal conductance were measured on selected trees at the time of airborne flights over the orchards. Tree fruit yield and quality parameters such as oil, weight and water content (for the olive trees), and fruit volume and weight (for the peach trees) were obtained at harvest and through laboratory analysis. Relationships between airborne-estimated crown temperature minus air temperature and stem water potential yielded r2=0.5 (12:30 GMT) at the olive tree level...

Influencia de diferentes patrones para cerezo en la calidad del fruto del cultivar 'Sunburst'; Effect of several rootstocks on fruit quality of 'Sunburst' sweet cherry

Jiménez Tarodo, Sergio; Garín Oliva, Ana; Betrán Aso, Jesús Ángel; Gogorcena Aoiz, Yolanda; Moreno Sánchez, María Ángeles
Fonte: Asociación Interprofesional para el Desarrollo Agrario Publicador: Asociación Interprofesional para el Desarrollo Agrario
Tipo: Artículo Formato: 506173 bytes; application/pdf
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[ES] Este trabajo pretende evaluar la influencia de los patrones ‘CAB 6P’, ‘CAB 1 lE’, ‘Masto de Montañana’ (‘MM 9’), ‘MaxMa 14’, ‘MaxMa 97’, ‘GM 61/1’ (‘Damil’), ‘Colt’ y ‘Santa Lucía GF 64’ (‘SL 64’) en la calidad del fruto del cerezo ‘Sunburst’. El ensayo se ha realizado en el Valle Medio del Ebro, en un suelo pesado y calizo. Se determinaron los siguientes parámetros: tamaño (calibre), peso medio del fruto, color, firmeza y propiedades organolépticas del fruto (acidez, pH y concentración de azúcares). Además, se analizaron por cromatografia líquida (HPLC) los azúcares más importantes presentes en el zumo del fruto (glucosa, fructosa y sorbitol). Se encontraron diferencias significativas entre patrones en la concentración de azúcares, color, peso y firmeza del fruto. Los mayores pesos de fruto y calibres fueron inducidos por los patrones P. cerasus y ‘Colt’, especialmente para los años de mayor producción. Resultados preliminares indican que los patrones que inducen una mayor cantidad de sólidos solubles también parecen mostrar una mayor firmeza del fruto.; [EN] The influence of ‘CAB 6P’, ‘CAB 1 lE’, ‘Masto de Montañana’ (‘MM 9’), ‘MaxMa 14’...

Growth, yield and fruit quality of ‘Van’ and ‘Stark Hardy Giant’ sweet cherry cultivars as influenced by grafting on different rootstocks

Cantín Mardones, Celia M.; Pinochet, Jorge; Gogorcena Aoiz, Yolanda; Moreno Sánchez, María Ángeles
Fonte: Elsevier Publicador: Elsevier
Tipo: Artículo Formato: 125168 bytes; application/pdf
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The definitive version is available at: http://www.sciencedirect.com/science/journal/03044238; The influence of Adara, CAB 6P, Gisela 5, MaxMa 14, Saint Lucie GF 64 (SL 64), Saint Lucie GF 405 (SL 405), and Tabel rootstocks onto vegetative growth, yield and fruit quality of ‘Van’ and ‘Stark Hardy Giant’ (SHG) sweet cherry cultivars was studied during 10 years after grafting. The experiment was performed in the Ebro Valley (Zaragoza, Spain), on a heavy and calcareous soil. Significant differences in some of these parameters such as vigour, yield, fruit size, soluble solids content (SSC), titratable acidity (TA), skin colour and fruit firmness were examined among rootstocks. In general, the highest vigour, annual and cumulative yield were induced by Adara rootstock, whereas Gisela 5 induced the lowest when grafted with both cultivars. The highest yield efficiency was induced by Gisela 5 due to its low trunk cross-sectional area (TCSA), together with Adara, CAB 6P and Tabel for ‘SHG’ cultivar. Regarding fruit quality, Adara, CAB 6P and MaxMa 14 showed, in general, the highest fruit weight and the more attractive skin colour for both sweet cherry cultivars. Furthermore, the high yield shown by Adara did not significantly affect its fruit size. Cherries of trees grafted on Adara also showed high firmness...

Predicción mediante análisis floral de la clorosis férrica en melocotonero. Corrección e influencia en la calidad del fruto; Floral analysis for predigting iron clorosis in peach trees. Correction and influence in fruit quality

Sanz Encinas, Manuel; Pascual Taratiel, Jesús; Machín Gayarre, Javier
Fonte: Asociación Interprofesional para el Desarrollo Agrario Publicador: Asociación Interprofesional para el Desarrollo Agrario
Tipo: Artículo Formato: 329139 bytes; application/pdf
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[ES] El análisis de hierro en flor ha permitido realizar una prognosis de la incidencia de la clorosis férrica en melocotonero (Prunus persica L. Batsch), “Babygol 7” injertado sobre franco, con una elevada fiabilidad. Seis casos elegidos con una concentración de Fe en flor menor de 133 ppm sobre materia seca, de entre treinta y cinco melocotoneros analizados, han presentado posteriormente una clorosis grave en las hojas. La corrección temprana de esta carencia ha posibilitado medir la influencia de la clorosis férrica en la calidad del fruto y su corrección ha permitido duplicar los calibres de los frutos en los árboles tratados y evitar un retaso en maduración.; [EN] The floral analyses of iron content allowed the prognosis of the incidence of the iron chlorosis on peach traes (Prunus persica L. Batsch), c.v. “Babygold 7” grafted on seedling, with high reliability. From a total of 35 peach traes analysed, six of them with floral iron concentratiori in dry matter less than 133 ppm were selected. These six trees further developed a severa iron chlorosis in leaves. The early correction of this deficiency permitted to measure its influence on the fruit quality, doubling the sizes and avoiding the delay into fruit ripeness for the corrected trees.; Peer reviewed

The P16 rootstock inhibits the growth but enhances the fruit quality of 'Jonagored' apples when grown under warm summer conditions; El patrón P16 inhibe el crecimiento y mejora la calidad del fruto en manzanos ‘Jonagored’ cultivados en climas de veranos cálidos

Blanco Braña, Álvaro; Mata Bordonaba, Ana Pilar; Lasaosa Vidal, Alejandro; Val Falcón, Jesús
Fonte: Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (España) Publicador: Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (España)
Tipo: Artículo Formato: 89330 bytes; application/pdf
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Available online at www.inia.es/sjar; [EN] The production of high quality fruit is the main aim of fruit growers. In areas where summers are warm, high apple quality is often difficult to attain, particularly with respect to red cultivars; colour is one of the main features affecting fruit quality. In vigorous red apple cultivars, the use of very dwarfing rootstocks might help overcome the lack of colouring in the fruit. In experiments performed in 2003 and 2004, specimens of apple cv. Jonagored grafted onto P16 rootstocks were compared to others grafted onto M9 rootstocks; fruit thinning was performed to various extents so that trees carried different crop loads. Under the warm summer conditions of the Ebro Valley, Spain, the P16 rootstock showed very strong dwarfing properties. �Jonagored� trees grafted onto these rootstocks had shorter shoot lengths and a smaller leaf area than those grafted onto M9 rootstocks. The fruits of �Jonagored� apple trees are usually large, but in 2004, when the crop loads of the P16-grafted trees were far greater than those of the M9-grafted trees, the fruits of the former were smaller than those produced by the latter, although still commercially suitable. The rootstocks were found to affect several fruit quality variables. The soluble solids content of the fruits of the P16-grafted trees was greater than that of the M9-grafted trees...

Phenotypic diversity and relationships of fruit quality traits in apricot ( Prunus armeniaca L.) germplasm

Ruiz, David; Egea, José
Fonte: Springer Publicador: Springer
Tipo: Artículo Formato: 259768 bytes; application/pdf
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16 pages, 1 figure, 7 tables.; Fruit quality attributes were studied for two consecutive years in forty-three apricot cultivars and selections grown in a Mediterranean climate. Physical parameters (weight, size, flesh and skin colour, percentage of blush, firmness and percentage of dry matter), chemical parameters (total soluble solids content and acidity) and sensory parameters (attractiveness, taste, aroma and texture) were evaluated. A high variability was found in the set of the evaluated apricot genotypes and significant differences were found among them in all studied quality attributes. Year-by-year variations were observed for some pomological traits such as harvest date, flesh colour, fruit weight, firmness and soluble solids content. A high correlation was found among some apricot quality attributes. In addition, principal component analysis (PCA) made it possible to establish similar groups of genotypes depending on their quality characteristics as well as to study relationships among pomological traits in the set of apricot genotypes evaluated.; The authors are grateful to Spanish CICYT (Comisión Interministerial de Ciencia y Tecnología) Projects AGL2004-04126-C02-01 for financial support, and the MEC, for financially assisting Dr. Ruiz.; Peer reviewed

Yield and fruit quality of two melon cultivars irrigated with saline water at different stages of development

Botía, Pablo; Navarro, Josefa M.; Cerdá, Antonio; Martínez, Vicente
Fonte: Elsevier Publicador: Elsevier
Tipo: Artículo Formato: 579917 bytes; image/jpeg
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The response of two cultivars of melon (Cucumis melo L.) (Galia and Amarillo Oro) to irrigation with saline water at different stages of development has been studied under field conditions. Two levels of salinity (1.3 and 6.1 dS m−1) were used for irrigation water. Four treatments, differing with respect to the time of application of saline water, were used. These treatments were: control water (1.3 dS m−1) throughout the experiment, saline water (6.1 dS m−1) from transplanting to harvest, control water until flowering and then saline water until harvest, and control water from transplanting to fruiting and then saline water until harvest. Salinity had similar effects on vegetative growth in both cultivars. However, Galia exhibited higher salt tolerance than Amarillo Oro on the basis of fruit yield since marketable yield was reduced by 12% and 39%, respectively, when salinity was applied throughout the experiment. Salinity reduced flower number of Amarillo Oro and delayed flowering in Galia. Application of saline water from fruiting onward did not reduce marketable fruit yield (28.8 and 20.6 t ha−1 for Galia and Amarillo Oro, respectively) and increased fruit quality (TSS and maturity index) in both cultivars. Melon plants accumulated Na+ and Cl− in the stem...

Influência da adubação nitrogenada e potássica na eficiência do uso da água e na qualidade de frutos de melão; Influence of nitrogen and potassium fertilization on water use efficiency and fruit quality for melon crop

Buzetti, S.; Hernandez, F.B.T.; Sá, M.E.; Suzuki, M.A.
Fonte: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz Publicador: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ; ; ; Formato: application/pdf
Publicado em 01/12/1993 Português
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O presente trabalho foi conduzido com o objetivo de se estudar 3 doses de N e 3 doses de K2O, combinadas entre si e aplicadas em cobertura aos 15, 30 e 45 dias após a emergência das plântulas, na eficiência do uso da água e na qualidade de frutos de melão. Utilizou-se um Podzólico Vermelho Escuro, eutrófíco, textura média/argilosa, do município de Ilha Solteira(SP). O experimento foi implantado no ano de 1991 fazendo-se uso dos cultivares Valenciano Amarelo e Eldorado 300, em espaçamento de 2,0m entre linhas e 0,75m entre covas. A cultura foi conduzida sem capação e desbrota e os tratamentos fítossanitários procedidos de acordo com a necessidade. Pelos resultados obtidos verificou-se que o N ou o K2O influenciaram alguns parâmetros no cultivar Eldorado 300: peso da casca, peso de sementes com mucilagem e acidez titulável, além do rendimento de polpa no cultivar Valenciano Amarelo.; The present work was developed with the objective of studying 3 combined doses of N and K2O, applied as cover dressings within 15, 30 and 45 days after seedling emergence, in the water efficience use and fruit quality of muskmelons grown on a Dark Red Podzolic soil. The experiment was carried in Ilha Solteira, Sao Paulo State, Brazil. The experiment was carried out in 1991 with the Valenciano Amarelo and Eldorado 300 cultivars...

Produtividade e qualidade de fruto de pessegueiro utilizando porta-enxertos propagados por alporquia aérea e semente; Yield and fruit quality of peach scion by using rootstocks propagated by air layering and seed

Picolotto, Luciano; Fachinello, José Carlos; Bianchi, Valmor João; Manica-Berto, Roberta; Pasa, Mateus da Silveira; Schmitz, Juliano Dutra
Fonte: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz Publicador: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ; ; ; Formato: application/pdf
Publicado em 01/12/2010 Português
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Na propagação de porta-enxertos vários métodos podem ser usados, no entanto alguns são pouco utilizados devido à falta de informação sobre o comportamento das plantas a campo. Avaliou-se o método de propagação de porta-enxertos por alporquia comparado ao sistema tradicional de propagação por meio de sementes no pêssego [Prunus persica (L.) Batsch] cv. copa Granada. Avaliaram-se as seguintes variáveis: produtividade, peso de fruto, coloração da epiderme, firmeza de polpa, teor de sólidos solúveis totais (SST) e acidez titulável (AT), relação SST/AT, tamanho de fruto, fenóis totais, diâmetro de tronco, e peso de poda. A produtividade, fenóis totais e acidez titulável foram maiores quando utilizado o método de propagação por alporquia. Não houve diferenças entre os métodos de propagação para coloração e diâmetro de fruto, firmeza de polpa e sólidos solúveis totais e relação sólidos solúveis totais e acidez titulável. Dependendo do médoto de propagação, o peso do fruto não se diferencia entre os porta-enxertos. Para o porta-enxerto Capdeboscq os frutos maiores foram obtidos com a propagação com sementes. O comportamento dentro de cada método de propagação está relacionado com o tipo de porta-enxerto utilizado. A cultivar (cv.) copa Granada...