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Search Results: 1 - 10 of 277040 matches for " PAIVA JO?O RODRIGUES DE "
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Parametros genéticos em progênies de poliniza??o livre de acerola
Paiva, Joo Rodrigues de;Paiva, Waldelice Oliveira de;Cordeiro, Everton Rabelo;Sabry Neto, Hassan;
Pesquisa Agropecuária Brasileira , 1999, DOI: 10.1590/S0100-204X1999000400014
Abstract: acerola (malpighia emarginata d.c.), a typical tropical crop, has shown excellent adaptation in many brazilian regions. its high vitamin c content has attracted the interest of consumers, farmers, industries and exporters. selected materials with desirable characteristics such as high productivity and high fruit quality must be planted to establish new orchards. the main purposes of this work were to estimate and genetically interpret the portion of variability among some characteristics of acerola plants within a population. open pollination progenies from 62 mother trees previously selected within a commercial plantation were utilized. the experimental design used was a completely randomized block with three replicates, four plants per plot and spacing of 4 by 3 meters. the results showed that in the first year of evaluation the majority of the progenies had already fruited and the proportion of the flowering was lower than that of fruiting during the period of evaluation. the parameters used to evaluate genetic variation within the population showed high variability, which is favorable for selection.
índice Multiefeitos e estimativas de parametros genéticos em aceroleira
Paiva, Joo Rodrigues de;Resende, Marcos Deon Vilela de;Cordeiro, Everton Rabelo;
Pesquisa Agropecuária Brasileira , 2002, DOI: 10.1590/S0100-204X2002000600009
Abstract: the selection made by multi-effects index has grounds for one index that considers simultaneously individual and their family behavior, as well as the plot effect where the individual was planted. the objective of this work was to evaluate genetic parameters in an acerola population and to compare genetic gains through six selection methods. the experiment was settled under a randomized complete block experimental design, with 62 progenies, three repetitions and four plants per plot. the traits evaluated were: plant height, and stalk diameter at first, second and third years of plant ages; canopy diameter at second and third years; and fruit yield by a period of one year with weekly harvest. the genetics parameters estimated to population pointed out favorable conditions to selection by the heritability of moderate magnitudes. the selection based on multi-effects index was positive, so it gives a bigger genetic gain and high accuracy than among and within progenies selection, parental selection based on progenies behavior and individual selection.
Heterose em cajueiro an?o precoce
Cavalcanti, José Jaime Vasconcelos;Crisóstomo, Joo Ribeiro;Barros, Levi de Moura;Paiva, Joo Rodrigues de;
Ciência e Agrotecnologia , 2003, DOI: 10.1590/S1413-70542003000300010
Abstract: the objective of this work was to evaluate the heterosis in dwarf cashew (anacardium occidentale l.). the experiment had six parent clones (ccp 06, ccp 09, ccp 76, ccp 1001, c1p3, and p399e) and 18 hybrid plants. a randomized complete block experimental design with two replications and five plants per plot was used. the average heterosis was 12%, 19%, 98%, 97%, and -2%, for the parent clones, based on the traits plant height, canopy diameter, number of nuts per plant, nut yield, and nut weight. it should be pointed out the presence of hybrid vigor in all crosses for all traits, except nut weight. this stresses the importance of hybrid vigor exploration, with perspectives of significant genetic improvement of the cashew culture, by obtaining superior commercial clones and establishing base-populations for the population breeding program. the hybrid combinations ccp 06 x c1p3, ccp 09 x p399e, and ccp 09 x ccp 06 are the most promising.
CULTIVAR RELEASE-BRS 274 (BRS Jacaju): common or giant cashew clone
Joo Rodrigues de Paiva,José Jaime Vasconcelos Cavalcanti,Levi de Moura Barros,Joo Ribeiro Crisóstomo
Crop Breeding and Applied Biotechnology , 2008,
Abstract: BRS Jacaju is a common cashew clone developed by the Brazilian Agricultural Research Corporation Embrapa,sector Tropical Agro-industry, in partnership with the Companhia Industrial de óleos do Nordeste (CIONE). The clone isrecommended for rainfed cultivation along the coastline of the Northeastern Region or similar environmental conditions, forboth nut and peduncle production for fruit juice industry.
CULTIVAR RELEASE-BRS 275 (BRS D o): Hybrid clone of dwarf x common or giant cashew
Joo Rodrigues de Paiva,José Jaime Vasconcelos Cavalcanti,Levi de Moura Barros,Joo Ribeiro Crisóstomo
Crop Breeding and Applied Biotechnology , 2008,
Abstract: BRS D o is a cashew clone developed by the Brazilian Agricultural Research Corporation Embrapa, sectorTropical Agro-industry, in partnership with the Companhia Industrial de óleos do Nordeste (CIONE). It was selected from aplant derived from the cross between the dwarf clone CCP 1001 and the common genotype CP 12. It is recommended forcultivation without irrigation along the coastline in the Northeast of Brazil and in similar environmental conditions for bothnut and peduncle production for the fruit juice industry.
Repetibilidade de caracteres de produ o e porte da planta em clones de cajueiro-an o precoce
CAVALCANTI JOSé JAIME VASCONCELOS,PAIVA JOO RODRIGUES DE,BARROS LEVI DE MOURA,CRISóSTOMO JOO RIBEIRO
Pesquisa Agropecuária Brasileira , 2000,
Abstract: Os objetivos deste trabalho foram estimar coeficientes de repetibilidade (r), comparar a eficiência das metodologias utilizadas no processo de estima o, e determinar o número de avalia es necessárias à sele o clonal de cajueiro-an o (Anacardium occidentale L.) precoce. As metodologias aplicadas para estima o do coeficiente de repetibilidade constaram da análise de variancia, na qual o efeito temporário do ambiente é removido do erro (ANOVA); de análise dos componentes principais obtidos da matriz de correla es (CPCOR) e da matriz de variancias e covariancias fenotípicas (CPCOV); e da análise estrutural, com base no autovalor teórico da matriz de correla es ou correla o média (AECOR). Foram avaliados, em trinta clones, os caracteres altura da planta (AP), diametro da copa (DC) e produ o de castanha (PC), durante cinco anos. Verificou-se que em rela o aos caracteres AP e DC os valores de r variaram de 0,85 (ANOVA) a 0,96 (CPCOV). Quanto à produ o, os valores de r foram de 0,51 (ANOVA) a 0,88 (CPCOV). Desta forma, constatou-se que o método de componentes principais utilizando a matriz de variancias e covariancias fenotípicas é mais eficiente para estima o do coeficiente de repetibilidade, sobretudo no que se refere ao carácter produ o de castanha. Observou-se que s o suficientes duas medi es da AP e do DC, e três medi es da PC no processo seletivo.
Sele o de clones de cajueiro-an o para o plantio comercial no estado do Ceará
BARROS LEVI DE MOURA,CAVALCANTI JOSé JAIME VASCONCELOS,PAIVA JOO RODRIGUES DE,CRISóSTOMO JOO RIBEIRO
Pesquisa Agropecuária Brasileira , 2000,
Abstract: O principal problema da cajucultura no Brasil é a baixa produtividade dos pomares, atualmente menos de 220 kg ha-1,de castanha, raz o pela qual a prioridade é a obten o de novas cultivares. Neste trabalho s o apresentados os resultados da avalia o de 30 clones de cajueiro (incluindo quatro testemunhas), em regime de sequeiro, efetuada entre abril de 1990 e fevereiro de 1997, na Esta o Experimental de Pacajus, CE, Brasil. O delineamento experimental foi o de blocos ao acaso, com quatro repeti es e quatro plantas/parcela, com espa os de 7 x 7 m. Os resultados mostraram que os clones CAP 01, CAP 05 e CAP 12, com altura mais de 70% superior aos 2,4 m médios das testemunhas, s o de porte intermediário entre os tipos comum e an oprecoce. O diametro da copa dos clones CAP 10, CAP 06 e CAP 26 foi superior em mais de 63% aos 4,8 m médios das testemunhas; os clones CAP 02, CAP 07, CAP 24 e CAP 25 foram os de menor envergadura. A produ o dos clones CAP 12, CAP 18 e CAP 26 foi, respectivamente, de 1.510, 1.281 e 1.262 kg ha-1 de castanhas, no quinto ano, ou seja, 175% maior do que a testemunha mais produtiva, e o CAP 12 e o CAP 18 foram os mais regulares quanto a este caráter. O peso da amêndoa variou de 1,9 a 3,2 g, com 16 clones apresentando amêndoas superiores a 2,5 g (as de maior pre o no mercado internacional de nozes). Quatro clones apresentaram rendimento de amêndoa acima dos 28% da melhor testemunha (s o obtidos 22% na indústria brasileira), e os clones CAP 11, CAP 06 e CAP 05 apresentaram menos de 2% de amêndoas quebradas. Os resultados apontaram os clones CAP 26 e CAP 06 como os mais promissores.
Análise da castanha do cajueiro por tomografia de ressonancia magnética
Paiva, Joo Rodrigues de;Biscegli, Clovis Isberto;Lima, Ant?nio Calixto;
Pesquisa Agropecuária Brasileira , 2004, DOI: 10.1590/S0100-204X2004001100014
Abstract: the objective of this work was to evaluate the technique of magnetic resonance tomography for cashew nut analysis, compared to the traditional method of clone selection. samples of cashew nut from 40 clones harvested in 2002 were analyzed using both methods. using traditional method most of clones showed high and medium values of the industrial indicators nut and seed mass and industrial yield and low values of seed breakage. by magnetic resonance tomography majority of clones showed cashew nuts with empty spaces between the nut and the endocarp, which can protect the seed during decortication. the results for the two methods were complementary and the tomography, besides being a promising option for the quality evaluation of cashew nut, can give support to other researches related to cashew nut study.
VARIABILIDADE GENéTICA EM CARACTERES MORFOLóGICOS DE POPULA ES DE PLANTAS JOVENS DE ACEROLA
PAIVA JOO RODRIGUES DE,CAVALCANTI JOSé JAIME VASCONCELOS,SABRY NETO HASSAN,FREITAS AMANDA SORAYA MOREIRA
Revista Brasileira de Fruticultura , 2001,
Abstract: Com o objetivo de estimar e interpretar geneticamente a por o de variabilidade genética existente em popula es de plantas juvenis de acerola obtidas de sementes, originadas de popula es submetidas a processo de sele o, foi instalado um experimento com três tipos de popula es, em blocos ao acaso, com 45 progênies, três repeti es e número variável de 4 a 6 plantas por parcela. Tendo em vista os resultados obtidos, conclui-se que a avalia o da variabilidade genética em popula es de plantas jovens de aceroleira n o se constitui em material adequado para esse tipo de estudo. Também n o foi possível fazer uma interpreta o genética da por o de variabilidade existente nas popula es, haja vista n o seguirem um padr o que possibilitasse estabelecer associa es entre as popula es nas condi es em que o trabalho foi desenvolvido.
Antimicrobial Action and Scaring of 10% Green Banana Shell in Chronic Wounds  [PDF]
Ana Beatriz Alkimim Teixeira Loyola, Rafael Vieira Fernandes, Joo Victor Braga Mendes, Nadir Alves de Oliveira Neta, Luiz Francisley de Paiva, Adriana Rodrigues dos Anjos Mendon?a, Dênia Amélia Novato Castelli Von Atzingen
Open Journal of Medical Microbiology (OJMM) , 2018, DOI: 10.4236/ojmm.2018.83005
Abstract: The percentage of diabetic patients with contaminated lesions increases from 3% to 10%. Treatment with herbal products shows benefits in their use, as well as antioxidant and antifungal activities. Objective: to evaluate the antimicrobial action of 10% banana peel gel and the contraction of diabetic and venous wounds. Methods: individual, analytical, interventional, longitudinal, prospective, randomized study from February to December 2015. Five patients were included in the study; 3 with venous ulcer and 2 with diabetic wound. Application of 10% green banana peel gel and weekly samples were performed. After six days, the second collection was performed. The samples were seeded in the Mannitol salt agar culture medium, MacConkey agar and Saboraund agar with chloramphenicol for isolation of cocci and Gram-positive and Gram-negative bacilli; and fungi. The total counts of bacteria were determined by PCA (Plate Count Agar) and measurement of the lesion margin. There was a reduction of microorganisms with the use of the gel in 53.57% of the patients, and reduction of wound areas in 48.1%.
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