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Características físicas de frutos e amêndoas e características químico-nutricionais de amêndoas de acessos de sapucaia; Fruit and almond physical characteristics and almond chemical-nutritional characteristics of sapucaia accesses

SOUZA, Valdomiro Aurélio Barbosa de; CARVALHO, Michelle Garcêz de; SANTOS, Kleber Silva; FERREIRA, Clemilton da Silva
Fonte: Sociedade Brasileira de Fruticultura Publicador: Sociedade Brasileira de Fruticultura
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
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O objetivo deste trabalho foi avaliar a variabilidade fenotípica entre acessos de sapucaia para características físicas de frutos e amêndoas e características químico-nutricionais de amêndoas, para fins de uso em futuros trabalhos de melhoramento genético. Os frutos foram colhidos no estádio de pré-maturação e mantidos em temperatura ambiente por cerca de uma semana para completar a maturação. As seguintes características físicas e químico-nutricionais foram analisadas: peso médio de fruto, diâmetro longitudinal, diâmetro equatorial, relação diâmetro longitudinal/diâmetro equatorial do fruto, diâmetro da tampa, peso médio de amêndoa, comprimento da amêndoa, diâmetro da amêndoa, relação comprimento/diâmetro da amêndoa, número de amêndoas/fruto, energia, gordura, proteína bruta, cinzas e minerais. Os dados foram submetidos à análise de variância, e as médias dos acessos, comparadas pelo teste de Scott-Knott a 5%. Houve diferenças estatísticas entre os acessos para as características avaliadas, exceto gordura e proteína bruta. Observou-se grande variabilidade fenotípica no germoplasma analisado, indicando que essa variabilidade pode servir de base inicial para futuros trabalhos de melhoramento genético.; The objective of this work was to evaluate fruit and almond physical characteristics and almond chemical-nutritional characteristics of sapucaia accesses. Fruits were harvested at the stage of pre-ripening and kept at environment temperature for about a week to complete the ripening. The following physical and chemical-nutritional characteristics were analyzed: fruit mean weight...

High intake of fruits and vegetables predicts weight loss in Brazilian overweight adults

SARTORELLI, Daniela Saes; FRANCO, Laercio Joel; CARDOSO, Marly Augusto
Fonte: PERGAMON-ELSEVIER SCIENCE LTD Publicador: PERGAMON-ELSEVIER SCIENCE LTD
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
38.1369%
To determine whether changes in dietary intakes predict weight loss, we studied 80 overweight adults who attended a nutritional counseling program during 6 months of follow-up at a primary health care center in Brazil. Habitual diet was assessed using a validated food frequency questionnaire at baseline and after 6 months. The mean age (+/-SD) of the participants was 46.5 +/- 9.5 years, and their mean body mass index was 29 +/- 3 kg/m(2) at baseline. After 6 months, the differences in body weight and fruit/vegetable intake were -1.4 +/- 3 kg and 109 +/- 320 g daily, respectively. Using multiple linear regression models adjusted for age, sex, changes in walking time, and total energy intake, the increased intake of dietary fiber from fruits/vegetables was associated with a greater weight loss (beta 1 [95% confidence interval (CI)] = -0.180 [-0.269, -0.0911) after 6 months of follow-up. Similar results were observed for increased intake of vegetables (beta 1 [95% CI] = -0.00497 [-0.008, -0.0021) and fruits (beta 1 [95% CI] = -0.00290 [-0.005, -0.001]) as predictors of weight loss. The increase of 100 g/d of vegetables and fruits represented a body weight loss of 500 and 300 g after 6 months, respectively (P <.05). Our findings support the relevance of increased intakes of fruits and vegetables that may help avoid weight gain in overweight adults. (C) 2008 Elsevier Inc. All rights reserved.

Desenvolvimento, produção e qualidade de frutos de abacateiro cv. "Hass" sobre dois porta-enxertos nas condições edafoclimáticas da região central do Estado de São Paulo; Growth, fruit yield and quality of 'Hass' avocado budded onto two rootstocks in the central region of São Paulo State

Moraes, Ana Flávia Garcia
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 10/09/2014 Português
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48.137104%
A produção comercial brasileira de abacates ocorre em pomares implantados sobre porta-enxertos oriundos de sementes, o que resulta em grande desuniformidade das plantas com relação a tamanho da copa, produção, qualidade de frutos e suscetibilidade a patógenos do solo, principalmente Phytophthora cinnamomi, agente causal da podridão radicular, principal doença da cultura. Enquanto em outros países já é adotado o uso de porta-enxertos com características superiores que são propagados clonalmente visando minimizar esses problemas, no Brasil estes materiais ainda não foram avaliados. Durante os anos de 2010 a 2013 foi conduzido um experimento na Fazenda Jaguacy, município de Bauru, SP, com o objetivo de avaliar o desenvolvimento, produção e qualidade de frutos de abacateiro 'Hass' sobre dois porta-enxertos, sendo um proveniente de sementes ('Seedling') (T1) e o outro da cultivar Dusa obtido por propagação clonal (T2). O experimento foi conduzido seguindo um delineamento em blocos casualizados, com dois tratamentos, 5 repetições e 10 plantas por parcela, totalizando 100 plantas em avaliação. O desenvolvimento vegetativo foi obtido pela medição da altura e diâmetro das plantas, utilizados para o cálculo do volume de copa. A produção foi avaliada a partir da contagem e pesagem de todos os frutos de cada planta e também pelo cálculo da eficiência produtiva e da alternância produtiva entre anos. A qualidade dos frutos foi avaliada a partir da massa...

Efeito do raleio e do anelamento do tronco no crescimento, produção e qualidade da ameixeira japonesa

Ilha, Luciano Larruscahim Hamilton; Marodin, Gilmar Arduino Bettio; Seibert, Eduardo; Barradas, Carlos Iguacu Nogue
Fonte: Universidade Federal do Rio Grande do Sul Publicador: Universidade Federal do Rio Grande do Sul
Tipo: Artigo de Revista Científica Formato: application/pdf
Português
Relevância na Pesquisa
68.30691%
Na produção de ameixas (Prunus salicina Lindley) para consumo in natura, o tamanho do fruto é um dos aspectos mais valorizados. O raleio de frutos é tradicionalmente utilizado para obter, entre outros efeitos, a melhoria do tamanho dos frutos remanescentes. Uma antiga prática, que está recebendo renovada atenção, é o anelamento, que em muitas situações pode aumentar o tamanho dos frutos e antecipar a colheita. Este trabalho avaliou os efeitos do raleio manual de frutos em intensidades de 0, 25, 50 e 75%, associado ou não ao anelamento do tronco (4 mm de largura), sobre o crescimento, a produção e a qualidade da ameixeira cv. Amarelinha. O experimento foi conduzido na Estação Experimental Agronômica da Universidade Federal do Rio Grande do Sul (EEA/UFRGS) no ciclo 1995/96. O raleio foi realizado em 16/10/95, 36 dias após a plena floração, e o anelamento, sete dias após o raleio. O raleio reduziu a produção proporcionalmente à intensidade de raleio aplicada. O anelamento antecipou a colheita, diminuiu a firmeza e a acidez titulável, e aumentou a relação sólidos solúveis totais/acidez titulável dos frutos; mas diminuiu o vigor e o crescimento das plantas. Nenhum dos tratamentos alterou significativamente o peso médio dos frutos.; In the production of plums (Prunus salicina Lindley) for in natura consumption the fruit size is a very important feature. Fruit thinning is traditionally used to increase fruit size. Girdling is a practice which is deserving renewed attention...

Monda em macieira Fuji. Comparação entre novas substâncias quimicas e a monda manual

Fernandes, Carla Maria Correia
Fonte: ISA/UTL Publicador: ISA/UTL
Tipo: Dissertação de Mestrado
Publicado em //2010 Português
Relevância na Pesquisa
47.724%
Mestrado em Engenharia Agronómica - Hortofruticultura e Viticultura - Instituto Superior de Agronomia; The chemical agents, ammonium thiosulphate (ATS) (1%), 6-benzyladenine (BA) (100 ppm) and metamitron (100, 175, and 350 ppm) were evaluated as thinning agents on 3 years old „Fuji‟ grafted on to M9 apples trees. The products were used alone, at single or double application or in combination. There were no differences between treatments regarding yield, mean fruit weight and number of commercial fruits (70 – 85 mm) but there were differences concerning the greater and smaller fruit size classes. The fruit set was reduced by metramitron, but when considering different crop loads its action was independent of the crop load for the 175 and 350 ppm concentrations, however, an over thinning effect was observed at 350 ppm in trees with low crop load. Probably, unfavourable weather conditions during the application period of ATS+BA has jeopardized its effectiveness. Hand thinning, leaving one fruit per cluster spaced of 15 cm, was the best option, but is often impossible because of labor costs and the limited supply of available labor

Relationship between fruit traits of custard apple trees (Annona squamosa L.)

Mariguele,Keny Henrique; Silva,Paulo Sérgio Lima e
Fonte: Universidade Federal de Viçosa Publicador: Universidade Federal de Viçosa
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/08/2010 Português
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The objective of this study was to estimate simple and partial coefficients of correlation, as well as to divide their effects into direct and indirect using path analysis for custard apple tree traits. Twenty half-sibling progenies were evaluated in a randomized block design with five replicates, and plots consisting of four plants. Six traits were evaluated in the first cropping season (mean number of seeds per fruit and mean weight of the pericarp, pulp, pedicel, seeds per fruit, and the whole fruit), while five traits were evaluated in the first three cropping seasons (mean fruit length and width, total number of fruits ha-1, mean fruit weight (in both types of analyses), and fruit yield in kg ha-1). The results of this work led to the conclusion that doing selection based on simple correlation estimates may not be convenient, since not always a cause and effect relationship can be verified between two traits. Positive correlations were obtained between number of seeds and seed weight, and between number of fruits and yield. The greatest direct effects were those obtained for pulp weight on fruit weight and for mean number and weight of fruits on fruit yield. The most important indirect effects were obtained for number of seeds and pericarp weight...

Grafted eggplant yield, quality and growth in infested soil with Verticillium dahliae and Meloidogyne incognita

Çürük,Sebahattin; Dasgan,H. Yıldız; Mansuroğlu,Sedat; Kurt,Şener; Mazmanoğlu,Meltem; Antaklı,Özgür; Tarla,Gülcan
Fonte: Embrapa Informação Tecnológica; Pesquisa Agropecuária Brasileira Publicador: Embrapa Informação Tecnológica; Pesquisa Agropecuária Brasileira
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2009 Português
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38.281484%
The objective of this work was to evaluate the effect of grafting (onto Solanum torvum Sw.) on plant growth, yield and fruit quality of the Pala and Faselis eggplant (Solanum melongena L.) cultivars, grown in a soil infested with Verticillium dahliae Kleb. and Meloidogyne incognita, or in noninfested soil. Soil infestation decreased yield, plant height, final above-ground biomass, and also reduced fruit mean weight and shoot dry weight depending on cultivar or grafting. Grafting decreased fruit oxalic acid and the soluble solid contents, and increased mean fruit weight, depending on cultivar and soil infestation. Grafting also reduced the negative effects of the pathogens on disease index, plant height and shoot dry weight. Cultivar Pala was more vigorous than Faselis, and S. torvum was a vigorous rootstock. The combination of a vigorous rootstock with a weak cultivar (Faselis) is more profitable than that of a vigorous rootstock and a vigorous cultivar (Pala). Using S. torvum as a rootstock for cultivar Faselis, grown in soil infested with the pathogens, is most likely to be useful in conventional and low-input sustainable horticulture, since grafting increases protection against the pathogens, and reduces the losses in quality and yield.

Crop loading studies on ‘Caricia’ and ‘Eva’ apples grown in a mild winter area

Castro,Damián César; Álvarez,Norma; Gabriel,Paola; Micheloud,Norma; Buyatti,Marcela; Gariglio,Norberto
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 01/06/2015 Português
Relevância na Pesquisa
47.8913%
The crop load level of an apple (Malus × domestica Borkh.) tree impacts fruit yield and quality parameters, tree vigor and biennial bearing. The optimal crop load is that which allows for consistent annual cropping and fruit quality acceptable to the market. We evaluated the effect of crop load on yield and fruit quality of two low-chill apples cv. ‘Caricia’ and ‘Eva’, growing in a mild winter area. During 2010 and 2011 crop load was manually adjusted from 2 or 3 to 17 fruits cm−2 of trunk cross-sectional area (TCSA). Fruit yield was positively related to crop load in both cultivars but mean fruit weight diminished as the crop load increased. For both cultivars, the production of non-commercial and small-sized fruit increased, whereas production of middle-sized fruit diminished as the fruit load increased. Shoot length was not affected by crop load in ‘Eva’ whereas it was reduced in ‘Caricia’. Red skin color (RSC %) had a quadratic response to crop load in ‘Caricia’. On the other hand, the RSC % of ‘Eva’ fruit was adjusted to a negative logarithmic model as an effect of crop load increment. No biennial bearing was observed in either cultivar. This research study suggests that the maximum limit of crop load for both cultivars is 7 fruits cm−2 of TCSA...

Expression of heterosis for productive traits in F1 eggplant (Solanum melongena L.) hybrids

Sousa,João Alencar de; Maluf,Wilson Roberto
Fonte: Sociedade Brasileira de Genética Publicador: Sociedade Brasileira de Genética
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/1998 Português
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38.15995%
This study was carried out to obtain estimates of heterosis in crosses between seven eggplant cultivars (Embu = E; Santa Genebra = SG; Viserba = V; Aubergine de Barbentane = AB; Florida Market 10 = FM; Black Beauty = BB, and Melitino = M) and two breeding lines (B-14-07 = B1 and B-31-06 = B2). The F1 hybrids used were: E x FM; E x BB; E x M; E x B1; E x B2; SG x FM; SG x BB; SG x M; SG x B1; SG x B2; V x FM; V x B1; V x B2; AB x FM; AB x M; AB x B1; AB x B2 and M x FM. Cultivars, lines and hybrids were evaluated at the ESAL experimental field in Lavras, MG, from February to October 1992. A randomized complete block design with three replications was used. Significant heterosis relative to the parental means was detected for all traits studied. Their values ranged from +41.23% to +113.31% for total fruit yield, from -11.45% to +26.17% for average fruit weight, and from +27.98% to +141.81% for early production. Heterosis relative to the superior parent ranged from +13.89% to +92.51% for total fruit yield. Hybrid pairs: SG x FM and AB x B1, V x FM and AB x FM, E x M and AB x B1 were the most heterotic relative to the parental mean for total fruit production, mean fruit weight and early production, respectively. The hybrids displaying highest heterosis relative to the superior parent for total yield were AB x B1 and SG x FM.

Cell Expansion and Endoreduplication Show a Large Genetic Variability in Pericarp and Contribute Strongly to Tomato Fruit Growth1

Cheniclet, Catherine; Rong, Wen Ying; Causse, Mathilde; Frangne, Nathalie; Bolling, Laurence; Carde, Jean-Pierre; Renaudin, Jean-Pierre
Fonte: American Society of Plant Biologists Publicador: American Society of Plant Biologists
Tipo: Artigo de Revista Científica
Publicado em /12/2005 Português
Relevância na Pesquisa
38.535266%
Postanthesis growth of tomato (Solanum lycopersicon) as of many types of fruit relies on cell division and cell expansion, so that some of the largest cells to be found in plants occur in fleshy fruit. Endoreduplication is known to occur in such materials, which suggests its involvement in cell expansion, although no data have demonstrated this hypothesis as yet. We have analyzed pattern formation, cell size, and ploidy in tomato fruit pericarp. A first set of data was collected in one cherry tomato line throughout fruit development. A second set of data was obtained from 20 tomato lines displaying a large weight range in fruit, which were compared as ovaries at anthesis and as fully grown fruit at breaker stage. A remarkable conservation of pericarp pattern, including cell layer number and cell size, is observed in all of the 20 tomato lines at anthesis, whereas large variations of growth occur afterward. A strong, positive correlation, combining development and genetic diversity, is demonstrated between mean cell size and ploidy, which holds for mean cell diameters from 10 to 350 μm (i.e. a 32,000-times volume variation) and for mean ploidy levels from 3 to 80 C. Fruit weight appears also significantly correlated with cell size and ploidy. These data provide a framework of pericarp patterning and growth. They strongly suggest the quantitative importance of polyploidy-associated cell expansion as a determinant of fruit weight in tomato.

Timing of Mite Injury Affects the Bloom and Fruit Development of Apple

Beers, E. H.; Hull, L. A.
Fonte: Oxford University Press Publicador: Oxford University Press
Tipo: Artigo de Revista Científica Formato: text/html
Português
Relevância na Pesquisa
47.651934%
The time when injury by the European red mite, Panonychus ulmi (Koch), occurs on an apple tree was studied to determine if yield components and vegetative growth were affected. Apple trees were subjected to about 1,000 cumulative mite days at three different times: early season (early May to mid-June), midseason (mid-June to 1 August), and late season (1 August to mid-October). Midseason injury resulted in the greatest reduction in mean fruit weight at harvest as well as return bloom and fruit load the following season. Late-season injury resulted in a reduction of return bloom. Early-season injury did not result in significant differences from the control for any of the response variables measured. On defruited trees, return bloom, percentage of set, and fruit load were not affected by early-season mite injury of the previous year. Percentage of set was not related to early-season injury occurring the same year.

Effect of a Foliar Urea Application and Mite Injury on Yield and Fruit Quality of Apple

Beers, E. H.; Hull, L. A.; Greene, G. M.
Fonte: Oxford University Press Publicador: Oxford University Press
Tipo: Artigo de Revista Científica Formato: text/html
Português
Relevância na Pesquisa
48.282153%
Malus × domestica Borkhauser, ‘Bisbee Delicious’ and ‘Rome Beauty’ apple trees were subjected to varying amounts (range, approximately 20-1,140) of European red mite, Panonychus ulmi (Koch), injury and then treated with a foliar urea to determine if the effects of mite injury could be mitigated. The effects of these treatments were determined on mean fruit weight, soluble solids, fruit firmness, fruit color, leaf nitrogen, and number of actively growing shoots at harvest, as well as return bloom, percentage of fruit set, and crop load the following season. Mean fruit weight, fruit firmness, and percentage of leaf nitrogen in August and September were affected by mite injury on ‘Bisbee Delicious,’ whereas with ‘Rome Beauty’ soluble solids, fruit color, and percentage of leaf nitrogen in August were affected by mite injury. The only effect of the urea application after mite injury was a reduction in red color of ‘Bisbee Delicious.’

Grafted eggplant yield, quality and growth in infested soil with Verticillium dahliae and Meloidogyne incognita.

ÇÜRÜK, S.; DASGAN, H. Y.; MANSUROGLU, S.; KURT, S.; MAZMANOGLU, M.; ANTAKLI, Ö.; TARLA, G.
Fonte: Pesquisa Agropecuária Brasileira. Brasília, v.44, n.12, p. 1673-1681, dez. 2009 Publicador: Pesquisa Agropecuária Brasileira. Brasília, v.44, n.12, p. 1673-1681, dez. 2009
Tipo: Artigo em periódico indexado (ALICE)
Português
Relevância na Pesquisa
38.281484%
Abstract - The objective of this work was to evaluate the effect of grafting (onto Solanum torvum Sw.) on plant growth, yield and fruit quality of the Pala and Faselis eggplant (Solanum melongena L.) cultivars, grown in a soil infested with Verticillium dahliae Kleb. and Meloidogyne incognita, or in noninfested soil. Soil infestation decreased yield, plant height, final above-ground biomass, and also reduced fruit mean weight and shoot dry weight depending on cultivar or grafting. Grafting decreased fruit oxalic acid and the soluble solid contents, and increased mean fruit weight, depending on cultivar and soil infestation. Grafting also reduced the negative effects of the pathogens on disease index, plant height and shoot dry weight. Cultivar Pala was more vigorous than Faselis, and S. torvum was a vigorous rootstock. The combination of a vigorous rootstock with a weak cultivar (Faselis) is more profitable than that of a vigorous rootstock and a vigorous cultivar (Pala). Using S. torvum as a rootstock for cultivar Faselis, grown in soil infested with the pathogens, is most likely to be useful in conventional and low-input sustainable horticulture, since grafting increases protection against the pathogens, and reduces the losses in quality and yield.; 2009

Caracterização de frutos e de mudas de mangabeira(Hancornia speciosa Gomes) de Goiás; Characterization of fruit and seedlings Mangabeira (Hancornia speciosa) of Goiás

VIEIRA, Muza do Carmo
Fonte: Universidade Federal de Goiás; BR; UFG; Mestrado em Agronomia; Ciências Agrárias Publicador: Universidade Federal de Goiás; BR; UFG; Mestrado em Agronomia; Ciências Agrárias
Tipo: Dissertação Formato: application/pdf
Português
Relevância na Pesquisa
48.00485%
Mangabeira (Hancornia speciosa) is a fruit tree, native to Brazil and found in various regions of the country, from the Coastal Plains and Southeast. We conducted this study in order to characterize fruits and seedlings in nursery and field mangabeira of different plants and natural areas of occurrence in the Cerrado of the State of Goiás ten areas were selected and each were chosen randomly plants were in full production. These plants were collected up to 12 fruits. Separating samples of five ripe fruit per plant are evaluated the following characteristics: weight, transversal and longitudinal directions, the total number of seeds and the total mass of seeds. Each pulped fruit and seeds washed and dried, separated samples per plant and a subsample of these two seeds were sown in separate tubes and for evaluation of emergency (%) and emergence speed index (ESI) (%). In the nursery, seedlings originated from seeds that were evaluated: length (cm) and number of air p sheets (NPF). Data were collected monthly for each offspring to the tenth evaluation. Ultimately, they separate, and these six plants, three samples per array seedlings were planted in the field at the School of Agronomy and Food Engineering - UFG and three in the Federal Institute Campus Urutaí Goiás-GO and underwent monthly assessments leading into account the diameter (mm) length (cm) and number of pair of sheets. Among matrices test was performed for average...

Produção e qualidade de morangos a partir de formulações de fertilizantes alternativos; Pre-planting fertilization effects on strawberry fruit quality and yield.

VIGNOLO, Gerson Kleinick
Fonte: Universidade Federal de Pelotas; Agronomia; Programa de Pós-Graduação em Agronomia; UFPel; BR Publicador: Universidade Federal de Pelotas; Agronomia; Programa de Pós-Graduação em Agronomia; UFPel; BR
Tipo: Dissertação Formato: application/pdf
Português
Relevância na Pesquisa
38.354648%
The effect of different fertilization formulations in pre-planting on yield and quality were evaluated for Camarosa and Camino Real strawberry cultivars (Fragaria x ananassa Duch.). This research was conducted at private farm located at Gama Road, 9th District of Pelotas / RS, during May to December 2009. The Camarosa and Camino Real strawberry cultivars were planted in annual system, using plant spacing of 0.30 x 0.30 m under low tunnels and drip irrigation. The treatments were based on doses of NPK (kg ha-1) recommended for strawberry crop. A factorial experiment arranged in a split-plot design was used, with two strawberry cultivars as main plot treatments, and ten levels of pre-planting fertilization as subplot treatments, with four replications. The experimental design was randomized blocks each replication consisted of 12 plants. The first six treatment were applied a fixed rate of castor bean (TM), phosphorite alvorada (FA) and potassium chloride (KCl) at 2400 kg ha-1, 375 kg ha-1 and 100 kg ha-1, respectively combined to: A1: 500 kg ha-1 MBR 7, A2: 1000 kg ha-1 MBR 7, A3: 1500 kg ha-1 MBR7, A4: 500 kg ha-1 MBR 33, A5: 1000 kg ha-1 MBR 33, A6: 1500 kg ha-1 MBR 33. The next four treatments were applied just TM, FA and KCl at three rates: A7: 0 kg ha-1 TM...

Estimates of genetic parameters for fruit yield and quality in custard apple progenies

Silva,Paulo Sérgio Lima e; Antonio,Rafaela Priscila; Mariguele,Keny Henrique; Silva,Kathia Maria Barbosa e; Lima,Lidiane Kely de; Silva,Júlio César do Vale
Fonte: Sociedade Brasileira de Fruticultura Publicador: Sociedade Brasileira de Fruticultura
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2007 Português
Relevância na Pesquisa
48.708813%
Apparently, there are no custard apple cultivars defined for the northeastern region of Brazil. The establishment of breeding programs aimed at the selection of types from productive locations for later cloning is desirable. This work's objective was to evaluate the yield (during the first three crops) and quality (first crop) of fruits from 20 half-sibling custard apple tree progenies, selected from home orchards. An additional objective was to estimate genetic parameters for the traits evaluated. A micro sprinkling-irrigated experiment was conducted in Mossoró-RN, Brazil, as random blocks with five replications. In characteristics evaluated for periods longer than a year (diameter, height and mean weight of fruits, number of fruits ha-1 and fruit yield (kg ha-1), and a split-plot design was adopted, with progenies considered as plots and annual cropping seasons as subplots. The best progenies in terms of fruit yield (A3 and A4) are not necessarily the best for fruit dimensions and fruit mean weight (A2, FE4, JG1, JG2, SM1, SM7, and SM8). These progenies show great potential to be used in future studies on crosses or on vegetative propagation. In this regard, progeny JG2 should be highlighted as promising in terms of yield and fruit size. The progenies are not different with regard to percentages (in relation to mean fruit mass) of pericarp...

Uniformidade da produção numa experiência de adubação da laranjeira baía

Brieger,F. G.; Moreira,Sílvio
Fonte: Instituto Agronômico de Campinas Publicador: Instituto Agronômico de Campinas
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/1941 Português
Relevância na Pesquisa
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1) - The present paper contains the results of the analysis of homogeneity in an experiment on the fertilization of the orange "Baía" (Washington Navel), in progress since 1932 in the Experiment Station of the Instituto Agronômico do Estado de São Paulo, at Limeira, São Paulo, Brasil. Such an experiment has to be divided into two phases': a preliminary period during which the trees remain without fertilizer in order to study their production and the homogeneity of the experimental plots, and the final period during which the different treatments are to be applied. The trees entered into production in 1938. It was decided to close up the first period after three harvestings, viz., in 1938, 1939 and 1940. The number of yields at our disposal remained thus very small. The trees, requiring urgent fertilization, began to be treated in 1941. 2) - Special care was taken while selecting a suitable, homogenous, minimum area of 233.600 sq. m. where to plot the experiment. Sour orange rootstocks from non selected seeds were subjected to a rigorous selection before budding. The buds were taken from two selected trees of heigh quality "Baía" variety. 3) - Every year the total number of fruits and their total weight in kg per tree were determined. These data were then subjected to a detailed statistical analysis...

Perceived barriers mediate the association between self-efficacy and fruit and vegetable consumption among students attending alternative high schools

Bruening, Meg; Kubik, Martha Y.; Kenyon, DenYelle; Davey, Cynthia; Story, Mary
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /10/2010 Português
Relevância na Pesquisa
38.19783%
Compared to students attending regular high schools, alternative high schools (AHS) students are more likely to be racial/ethnic minorities, have higher levels of poverty, and higher rates of risky and poor health behaviors, including weight-related behaviors, such as limited fruit/vegetable intake. However, little is known about fruit/vegetable intake among AHS students. This study examined whether perceived barriers to healthy eating mediated association between self-efficacy to eat healthy foods and fruit/vegetable consumption among AHS students. The cross-sectional study population consisted of students (n=145) attending 6 alternative high schools in the St. Paul/Minneapolis, MN area who were participants in an obesity prevention pilot study and completed a baseline survey in Fall 2006. Mixed model linear regression, adjusting for sociodemographic characteristics was used to test a series of regression models performed according to mediation analysis procedures. Students' mean age was 17.3 years, 52% were male, 63% were low-income, and 61% were from racial/ethnic minorities. Students reported a mean fruit/vegetable intake of 3.6 servings per day, mean self-efficacy to eat healthy score of 22.2 (range 3-35), and mean barriers to eating healthy score of 6.9 (range 3-13). Perceived barriers to healthy eating fully mediated the relationship between self-efficacy and fruit/vegetable consumption (Sobel test statistic=2.7...

Fruit quality parameters of some southern highbush blueberries (Vaccinium xcorymbosum L.) grown in Andalusia (Spain)

Molina, J. M.; Calvo, D.; Medina, J. J.; Barrau, C.; Romero, Francisco
Fonte: Conselho Superior de Investigações Científicas Publicador: Conselho Superior de Investigações Científicas
Tipo: Artículo Formato: 212026 bytes; application/pdf
Português
Relevância na Pesquisa
38.28215%
7 pages, and tables.; Physical and chemical parameters of fresh berries from three southern highbush (‘O’Neal’, ‘Sharpblue’ and ‘Misty’) blueberry cultivars grown in Huelva (Southwestern Spain) under two production systems were measured and evaluated. ANOVA applied to data yielded significant differences between production systems for mean fruit size and mean fruit fresh weight (P<0.05), although main effects on physical and chemical characteristics of fruit were due to cultivar. All three cultivars showed significantly different means (P<0.05) for fruit fresh weight, and all chemical characteristics. Stepwise discriminant analysis (SDA) for classification and identification of the cultivars based on physico-chemical properties of samples of fruits was performed. The model obtained gave high percentages of correct classification and prediction (81.1% and 78.4%, respectively). The variables with higher discriminating power were fruit titratable acidity, fruit size and fruit sugar content. Se midieron parámetros físicos y químicos de frutos frescos de arándano americano, correspondientes a tres cultivares de bajos requerimientos en horas frío (‘O’Neal’, ‘Sharpblue’ y ‘Misty’) cultivados en Huelva (suroeste de España) bajo dos sistemas de producción. Los datos se sometieron al análisis de varianza (ANOVA) de 2 factores. No se encontraron diferencias significativas (P>0...

The performance of Adara as a cherry rootstock

Moreno Sánchez, María Ángeles; Montañés Millán, Luis; Tabuenca Abadía, María de la Concepción; Cambra Ruiz de Velasco, Rafael
Fonte: Elsevier Publicador: Elsevier
Tipo: Artículo Formato: 918459 bytes; application/pdf
Português
Relevância na Pesquisa
57.60147%
7 pages, 1 figure, 3 tables. The definitive version is available at: http://www.sciencedirect.com/science/journal/03044238; The field performance of Adara (Prunus cerasifera L.), SL 64 (Prunus mahaleb) and Colt (Prunus avium X Prunus pseudocerasus) rootstocks grafted with two sweet cherry cultivars (Prunus avium L. cvs. ‘Van’ and ‘Tardif de Vignola’), were tested for 12 years on a calcareous clay-loam soil which was flood irrigated. No tree grafted on Adara died during the experiment. The percentage of dead trees of ‘Tardif de Vignola’ on SL 64 and Colt reached 63% and 19%, respectively. The percentage of dead trees of ‘Van’ was 19% when grafted on SL 64 and 6% on Colt. For ‘Van’ scion, Adara was the most invigorating rootstock and showed the greatest yield efficiency and cumulative production after 12 years. For ‘Tardif de Vignola’ scion, Adara also gave greater cumulative production, mean fruit weight, and vigour than SL 64 and Colt. Leaf mineral analysis of ‘Van’ trees showed a mineral element concentration closer to the optimum for the trees grafted on Adara than for those grafted on SL 64 and Colt. According to our results, Adara seems to be a suitable rootstock for cherry cultivars to avoid root asphyxia in heavy soils and/or under flood irrigation conditions...