oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 13 )

2019 ( 89 )

2018 ( 113 )

2017 ( 106 )

Custom range...

Search Results: 1 - 10 of 58640 matches for " Walter dos Santos Soares Filho "
All listed articles are free for downloading (OA Articles)
Page 1 /58640
Display every page Item
Production of Dietetic Jam of Umbu-Caja (Spondias sp.): Physical, Physicochemical and Sensorial Evaluations  [PDF]
Maria Eugênia de Oliveira Mamede, Leonardo Dib de Carvalho, Eliseth de Souza Viana, Luciana Alves de Oliveira, Walter dos Santos Soares Filho, Rogério Ritzinger
Food and Nutrition Sciences (FNS) , 2013, DOI: 10.4236/fns.2013.44059
Abstract:

The umbucajazeira is specie native to the Brazilian Northeast semiarid areas, which is economically explored based on the fruit. The fruit has a high agroindustrial potential, mainly for jam production. The aim of this study was to evaluate through sensorial analysis, two formulations of umbu-caja jams: a dietetic one with xylitol, used as an option for substitution of the sugars, and a conventional one. The proportion of 50:50:0.5 (pulp/sugar/pectin or pulp/xylitol/pectin) was used for jam processing. The mixture was concentrated up to reach 65°Brix. The jams were evaluated by 50 non-trained tasters, through a hedonic scale of nine points, whereas the following attributes were used: appearance, color, flavor, aroma and texture. The results of the physical and physicochemical analysis showed that the characteristics of jams prepared with sucrose are close to the ones made with xylitol, except for the total sugars and the energetic value. The jams had pH values ranging between 2.37 and 2.92; titratable acidity varying between 0.56 and 0.78 g citric acid/100 g pulp; soluble solids ranging between 60.92°and 65.08°Brix, respectively. A tendency for yellow color was noticed by the color analysis. Jam diet had the highest scores for appearance (7.4 - 7.7). No significant differences (p > 0.05) were obtained to flavor and texture. The fruit of the umbucajazeira showed to be adequate for jam manufature since they had good sensorial acceptance. The use of xylitol was satisfactory for obtaining a product with jam characteristics similar to the conventional jam, but with lower energetic value.

Caracteriza??o de híbridos de Poncirus trifoliata e de outros porta-enxertos de citros no Estado da Bahia
Passos, Orlando Sampaio;Peixouto, Leandro Santos;Santos, Leonardo Costa dos;Caldas, Ranulfo Corrêa;Soares Filho, Walter dos Santos;
Revista Brasileira de Fruticultura , 2006, DOI: 10.1590/S0100-29452006000300016
Abstract: studies on characterization of trifoliate hybrids and traditional rootstocks were accomplished in order to know their behavior under tropical conditions in the state of bahia. measurements of the height, diameter and weight of the fruits were taken, number of seeds per fruit and per kilo were counted, as well as number of embryos, polyembryony and germination rate and grafting in 34 accessions, mostly introduced from california, usa. the obtained data encourage the use of some trifoliate hybrids, as those from crosses between 'cleopatra' mandarin (c. reshni hort. ex tanaka) and 'sunki' mandarin (c. sunki hort. ex tanaka) with 'swingle' and 'english' trifoliate.
Poliembrionia e freqüência de híbridos em Citrus spp.
SOARES FILHO WALTER DOS SANTOS,MOREIRA CéLIO DOS SANTOS,CUNHA MARIO AUGUSTO PINTO DA,CUNHA SOBRINHO ALMIR PINTO DA
Pesquisa Agropecuária Brasileira , 2000,
Abstract: Com o objetivo de estudar a rela o entre o grau de poliembrionia e a freqüência de híbridos em citros, foram realizados cruzamentos controlados utilizando como parentais femininos as tangerinas 'Clementina' e 'Sunki' e os lim es 'Cravo' e 'Volkameriano', que apresentam graus de poliembrionia nulo, baixo, baixo a moderado e moderado, respectivamente. Como parentais masculinos empregaram-se Poncirus trifoliata e híbridos desta, tendo em vista a característica morfológica dominante folhas trilobadas. Observaram-se nas tangerinas 'Clementina' e 'Sunki' e nos lim es 'Cravo' e 'Volkameriano' as seguintes freqüências de híbridos: 57,4%, 53,6%, 18,6% e 14,2%, respectivamente. Foi verificada uma associa o negativa entre o grau de poliembrionia e a freqüência de híbridos.
Umbu-cajá como repositório natural de parasitoide nativo de moscas-das-frutas
Carvalho, Romulo da Silva;Soares Filho, Walter dos Santos;Ritzinger, Rogerio;
Pesquisa Agropecuária Brasileira , 2010, DOI: 10.1590/S0100-204X2010001000024
Abstract: the objective of this work was to assess the species diversity of fruit fly and their parasitoids in fruit of umbu-cajá (spondias spp.). fruit were collected in nine municipalities of the state of bahia, brazil. fruit infestation, fruit fly parasitism rates, and frequencies of the parasitoid species were estimated. for the first time, anastrepha obliqua infesting umbu-cajá fruit and the presence of the native parasitoid asobara anastrephae in anastrepha oblique larvae were recorded. the native parasitoid doryctobracon areolatus was the most frequent. umbu-cajá tree is a natural repository of tephritidae parasitoids, and its preservation is essential for the maintenance of trophic relationships between fruit fly species and parasitoids.
CALOGêNESE EM óVULOS DE ESPéCIES E VARIEDADES DE CITRUS
OLIVEIRA, ROBERTO PEDROSO DE;ZANOL, GENI CARMEN;GON?ALVES, JOAQUIM ALVES;SOARES FILHO, WALTER DOS SANTOS;
Revista Brasileira de Fruticultura , 2001, DOI: 10.1590/S0100-29452001000200003
Abstract: embrapa cassava & fruits research with citrus aim at obtaining somatic hybrids, particularly rootstocks, better adapted to the brazilian tropical cultivation conditions than the varieties currently in use. the main objectives are the selection of genotypes tolerant to drought and aluminum toxicity, tolerant/resistant to phytophthora foot rot and citrus tristeza virus, besides being well adapted to high planting densities. the following varieties have being used as protoplast sources: cleopatra, sunki and 'swatow' mandarins, rangpur lime selections santa cruz and santa bárbara, volkamer lemon and mazoe rough lemon, 'hamlin' sweet orange selections cnpmf 04 and cnpmf 20, sour orange selections common and narrow leaf, troyer citrange, citrus amblycarpa and microcitrus papuana. the study focused on obtaining and cultivating embryogenic calli. ovules taken from immature fruits were used in a modified mt culture medium, containing 50g.l-1 of sucrose and 500 mg.l-1 of malt extract, solidified with 7 g.l-1 of agar. in general, callus induction in the studied varieties was observed between the 6th and the 8th weeks of cultivation. in the rangpur lime, 'hamlin' sweet orange, cleopatra and 'swatow' mandarins and troyer citrange, the percentage of callus formation was equal or superior to 50%. the cleopatra mandarin stood out with a percentage near 70% of callus formation.
Evaluation of umbu-caja germplasm in the state of Bahia, Brazil
Rogério Ritzinger,Walter dos Santos Soares Filho,Paulo César Lemos de Carvalho
Crop Breeding and Applied Biotechnology , 2008,
Abstract: The umbu-caja is a tree native to the Northeastern region of Brazil, with promising perspectives of economicuse. Aiming to detect variability in the species, 43 umbu-caja genotypes were identified in 14 counties of the state of Bahia,Brazil. Fruits of these genotypes were collected for physical, chemical and physico-chemical analysis. The range of variationof all analyzed traits was large. Among genotypes, there was, however, predominance of pear-shaped to slightly pear-shapedfruits, fruit weight ranging from 15 g to 27 g, pulp/seed index around 2.0, total titratable acidity between 1.5 and 2.6%, totalsoluble solids between 9.0o and 14.0o Brix, and vitamin C content ranging from 3.6 to 16.4 mg ascorbic acid 100g pulp-1. Thepresence of seeds in genotypes ranged from 5 to 100 % of fruits without seeds.
Crescimento de híbridos e variedades porta-enxerto de citros sob salinidade = Growth of hybrids and rootstock varieties of citrus under salinity.
Pedro Dantas Fernandes,Marcos Eric Barbosa Brito,Hans Raj Gheyi,Walter dos Santos Soares Filho
Acta Scientiarum : Agronomy , 2011,
Abstract: A salinidade da água e do solo afeta o crescimento, o desenvolvimento e a produ o de espécies frutíferas, dentre as quais os citros. O uso de porta-enxertos tolerantes pode garantir a sustentabilidade do agronegócio citrícola em tais condi es. Assim, estudou-se a sensibilidade à salinidade durante a fase de forma o de portaenxertoscompreendendo variedades e híbridos selecionados. O experimento foirealizado em casa-de-vegeta o, considerando cinco níveis de salinidade da água de irriga o [testemunha, irriga o com água de abastecimento local, condutividade elétrica da água (CEa) de 0,41 dS m-1 e água com CEa de 1,0; 2,0; 3,0 e 4,0 dS m-1] e sete genótipos, utilizando delineamento em blocos casualizados, com cinco repeti esem esquema fatorial e quatro plantas úteis por parcela, durante o período de 150 dias. Avaliaram-se variáveis de crescimento e fisiológicas. A redu o mais expressiva foi observada na fitomassa seca total da parte aérea com aumento unitário da CEa. Observou-se redu o linear no crescimento com aumento da salinidade nos híbridosLVK x LVA-009 e TSK x TRENG-256. Dentre os genótipos avaliados, o limoeiro ‘Volkameriano’ foi o menos sensível ao estresse salino. Water and soil salinity affects the growth, development and production of fructiferous species, such as citrus. The use of tolerant rootstocks can guarantee the agribusiness of citrus under such conditions. Thus, the sensibility to salinity during the phase of rootstock formation of varieties and selected hybrids was studied. The experiment was carried out in a greenhouse, with five levels of irrigation water salinity [control, tap water with electrical conductivity (ECw) of 0.41 dS m-1, and water with ECw of 1.0, 2.0, 3.0 and 4.0 dS m-1] and seven genotypes, in a randomized block designand five replications each consisting of four plants, during 150 day period. Growth and physiologic variables were evaluated. Significant effects of genotypes and salinity in the variables were observed. The most expressive reduction was found for total dry matter with unit increase of ECw. A linear reduction was observed in hybrids LVK x LVA-009 and TSK x TRENG-256. Among the evaluated genotypes ‘Volkamer’ lemon was the least sensitive to saline stress.
CALOGêNESE EM óVULOS DE ESPéCIES E VARIEDADES DE CITRUS
OLIVEIRA ROBERTO PEDROSO DE,ZANOL GENI CARMEN,GON?ALVES JOAQUIM ALVES,SOARES FILHO WALTER DOS SANTOS
Revista Brasileira de Fruticultura , 2001,
Abstract: A Embrapa Mandioca e Fruticultura vem realizando a es de pesquisa visando à obten o de híbridos somáticos de citros, particularmente porta-enxertos, melhor adaptados às condi es tropicais de cultivo brasileiras que as variedades atualmente em uso. Como objetivo principal, busca-se a sele o de genótipos tolerantes à seca e ao alumínio, tolerantes/resistentes a gomose de Phytophthora e tristeza dos citros, além de adaptados a altas densidades populacionais. Como fontes de protoplastos, vêm sendo utilizadas as tangerinas-'Cleópatra', 'Sunki' e 'Swatow', lim es-'Cravo Santa Cruz' e 'Santa Bárbara', 'Volkameriano' e 'Rugoso Mazoe', laranja 'Hamlin CNPMF 04' e 'CNPMF 20', laranjas-azedas 'Comum' e 'Narrow Leaf', citrange-'Troyer', Citrus amblycarpa e Microcitrus papuana. O estudo concentrou-se na etapa de obten o e cultivo de calos embriogênicos. Foram utilizados óvulos extraídos de frutos imaturos, empregando-se como meio de cultura o MT, adicionando-se 50 g.L-1 de sacarose e 500 mg.L-1de extrato de malte e solidificando com 7 g.L-1 1de ágar. Em geral, a indu o de calos nas variedades estudadas ocorreu entre a 6a e a 8a semana de cultivo, com maior precocidade na laranja-?Hamlin?, sendo que, em lim o-?Cravo?, laranja-?Hamlin? , tangerinas-?Cleópatra? e ?Swatow? e citrange-?Troyer?, a porcentagem de forma o de calos foi igual ou superior a 50%, destacando-se a tangerina-?Cleópatra? com um porcentual próximo a 70% de calogênese.
Rapid Differentiation of Closely Related Citrus Genotypes by Fluorescence Spectroscopy  [PDF]
Dayse Drielly Souza Santana-Vieira, Débora Marcondes Bastos Pereira Milori, Paulino Ribeiro Villas Boas, Marina Fran?a e Silva, Magno Guimar?es Santos, Fernanda Amato Gaiotto, Walter dos Santos Soares Filho, Abelmon da Silva Gesteira
Advances in Bioscience and Biotechnology (ABB) , 2014, DOI: 10.4236/abb.2014.511105
Abstract: The differentiation of closely related Citrus genotypes is a meticulous, laborious, and time-consuming task that involves the assessment of complex traits such as growth, tolerance to stress, photosynthetic efficiency, yield, and many others. Such a task is generally accomplished either by analyzing specific features of adult plants or by applying molecular markers to young trees. On one hand, only after plants start yielding can distinct genotypes be differentiated by comparing their fruit sizes, shapes, taste, and the number of seeds. On the other hand, molecular markers are expensive, and demand expertise and time for the analysis of a larger number of plants. For these reasons, the development of techniques that could assist in an early, quick and accurate differen-tiation of closely related Citrus varieties is of utmost importance. In this context, laser-induced fluorescence spectroscopy (LIFS) is a promising technique, since it is rapid, highly sensitive, and inexpensive. Previous studies showed that LIFS can differentiate a variety of sweet orange. However, this new study aimed to determine LIFS accuracy in the differentiation and grouping of very closely varieties of four Sunki mandarin selections: Comum, Florida, Tropical, and Maravilha. Furthermore we compared the results with ISSR and SSR molecular markers for the same varieties. LIFS technique distinguished the four selections with accuracy greater than 70%. Only with molecular markers was possible distinguishing clearly Tropical from Maravilha, but not Comum from Florida selections. In this way the results suggest that LIFS may be a sound tool for helping the identification of closely Citrus varieties.
Coloniza??o micorrízica natural de porta-enxertos de citros em campo
Nunes, Maiara de Souza;Soares, Ana Cristina Fermino;Soares Filho, Walter dos Santos;Lêdo, Carlos Alberto da Silva;
Pesquisa Agropecuária Brasileira , 2006, DOI: 10.1590/S0100-204X2006000300021
Abstract: the objective of this work was to evaluate the mycorrhizal colonization of citrus rootstocks (traditional and hybrid), in the field, selected as tolerant to water deficit by the citrus breeding program of embrapa mandioca e fruticultura tropical. fine roots and soil samples were collected in two seasons of the year. the mycorrhizal colonization was high in both citrus orchards sampled, and varied among the genotypes and the seasons of the year. all citrus rootstocks presented high percentages of root colonization, varying from 42 to 83%, even in high soil phosphorous conditions.
Page 1 /58640
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.