oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 286 )

2018 ( 493 )

2017 ( 537 )

2016 ( 674 )

Custom range...

Search Results: 1 - 10 of 360561 matches for " Péricles de Albuquerque;Nagata "
All listed articles are free for downloading (OA Articles)
Page 1 /360561
Display every page Item
Detection of three Allexivirus species infecting garlic in Brazil
Melo Filho, Péricles de Albuquerque;Nagata, Tatsuya;Dusi, André Nepomuceno;Buso, José Amauri;Torres, Antonio Carlos;Eiras, Marcelo;Resende, Renato de Oliveira;
Pesquisa Agropecuária Brasileira , 2004, DOI: 10.1590/S0100-204X2004000800002
Abstract: garlic viruses often occur in mixed infections under field conditions. in this study, garlic samples collected in three geographical areas of brazil were tested by dot-elisa for the detection of allexiviruses using monoclonal specific antibodies to detect garlic virus a (garv-a), garlic virus b (garv-b), garlic virus c (garv-c) and a polyclonal antiserum able to detect the three virus species mentioned plus garlic virus d (garv-d). the detected viruses were biologically isolated by successive passages through chenopodium quinoa. reverse transcriptase polimerase chain reaction (rt-pcr) was performed using primers designed from specific regions of the coat protein genes of japanese allexiviruses available in the genetic bank of national center of biotechnology information (ncbi). by these procedures, individual garlic virus genomes were isolated and sequenced. the nucleotide and amino acid sequence analysis and the one with serological data revealed the presence of three distinct allexiviruses garv-c, garv-d and a recently described allexivirus, named garlic mite-borne filamentous virus (garmbfv), in brazil.
Coloniza??o por ácaros em genótipos de pimentas e piment?es em cultivo protegido
Lima, Milton Luiz da Paz;Melo Filho, Péricles de Albuquerque;Café Filho, Adalberto Corrêa;
Ciência Rural , 2003, DOI: 10.1590/S0103-84782003000600025
Abstract: one hundred and one capsicum genotypes of hot and sweet peppers belonging to four different species were appraised as for their reaction to the attack of phytophagous mites. evaluations consisted of the examination of genotypes for the presence of established colonies of mites, under natural infestation in greenhouse conditions. leaves were observed at stereoscopic microscope to detection of colonies and glass slides were prepared with specimens aiming observation at compound microscope. colonies of two species were identified, polyphagotarsonemus latus and tetranychus urticae. of all of the genotypes tested, 7.5% of the genotypes of capsicum annuum, 50% of c. frutescens, 57% of c. baccatum and 100% of c. chinensis, did not have colonies of neither of the mites species.
Correlations and path analysis of peanut traits associated with the peg
Luz, Lucas Nunes da;Santos, Roseane Cavalcanti dos;Melo Filho, Péricles de Albuquerque;
Crop Breeding and Applied Biotechnology , 2011, DOI: 10.1590/S1984-70332011000100013
Abstract: by correlation and path-coefficient analysis, the most relevant traits for selection for peanut pod yield were identified among the following: total number of pegs (tnp), number of pegs in the lower third of the plant (nplth), number of mature pods (nmp), main stem height (msh), and reproductive efficiency (ef1 and ef2). the trial consisted of 15 f2:3 progenies derived from a cross of variety br 1 and the advanced line cnpa 280 am, evaluated in a randomized block design with three replications. the lines with best reproductive efficiency were l.8 and l.11. path analysis detected a strong direct effect of the number of pegs in the lower plant third on the number of mature pods. this finding justifies the use of the number of pegs in the lower plant third in selection of peanut populations for number of mature pods.
Correlations and path analysis of peanut traits associated with the peg.
Lucas Nunes da Luz,Roseane Cavalcanti dos Santos,Péricles de Albuquerque Melo Filho
Crop Breeding and Applied Biotechnology , 2011,
Abstract: By correlation and path-coefficient analysis, the most relevant traits for selection for peanut pod yield were identifiedamong the following: total number of pegs (TNP), number of pegs in the lower third of the plant (NPLTh), number of mature pods(NMP), main stem height (MSH), and reproductive efficiency (EF1 and EF2). The trial consisted of 15 F2:3 progenies derived froma cross of variety BR 1 and the advanced line CNPA 280 AM, evaluated in a randomized block design with three replications. Thelines with best reproductive efficiency were L.8 and L.11. Path analysis detected a strong direct effect of the number of pegs in thelower plant third on the number of mature pods. This finding justifies the use of the number of pegs in the lower plant third in selectionof peanut populations for number of mature pods.
Ocorrência de Sclerotium rolfsii em plantas de kenaf no Estado de Pernambuco
íris Lettiere do Socorro Santos da Silva,Péricles de Albuquerque Melo Filho
Summa Phytopathologica , 2007, DOI: 10.1590/s0100-54052007000100018
Abstract:
Coloniza o por ácaros em genótipos de pimentas e piment es em cultivo protegido
Lima Milton Luiz da Paz,Melo Filho Péricles de Albuquerque,Café Filho Adalberto Corrêa
Ciência Rural , 2003,
Abstract: Cento e um genótipos de pimentas e piment es de quatro espécies de Capsicum foram avaliados quanto ao ataque de ácaros fitófagos. As avalia es consistiram em detectar sobre quais genótipos houve o estabelecimento de col nias de ácaros cuja infesta o ocorreu sob condi es naturais. Folhas foram observadas ao microscópio estereoscópio para detec o de col nias e preparadas laminas com espécimes coletados para observa o ao microscópio composto. Foram identificadas col nias de Polyphagotarsonemus latus e Tetranychus urticae. De todos os materiais testados, 7,5% dos genótipos de Capsicum annuum, 50% de C. frutescens, 57% de C. baccatum e 100% de C. chinensis, n o apresentaram col nias de ácaros fitófagos.
Express?es ecofisiológicas de germoplasma de Hancornia speciosa Gomes cultivado no Litoral de Pernambuco
Nogueira, Rejane Jurema Mansur Custódio;Melo Filho, Péricles de Albuquerque;Araújo, Elcida de Lima;
Ciência Rural , 1999, DOI: 10.1590/S0103-84781999000400027
Abstract: a study was carried out with tropical fruit germoplasm (hancornia speciosa gomes) to evaluate "in loco" water relations and their respectives correlations in four acesses (m-ufrpe 1, m-ufrpe 2, m-ufrpe 3 and m-ufrpe 4) cultivated at the coastal region, in brazil. the datas were taken from fully expanded adults leaves. two treatments were studied: leaves fully exposed to the sun and shadow leaves. the following characters were analized: leaf temperature (tf), transpiration (e) and diffusive resistance (rs). the shadow leaves of the m-ufrpe 2 showed higher transpiration rate than fully exposed leaves to the sun. this behaviour was different compared to the other treatment. the variation between fully exposed leaves to the sun and shadow leaves for rs was 1.1 to 4.5s.cm-1 and 1.7 to 3.5s.cm-1, respectively. the exrs correlation was more significant and negative. the tf and e correlation was longer influenced by relative humidity than photosynthetically in fully exposed leaves to the sun treatment.
Adaptabilidade e estabilidade fenotípica de genótipos de amendoim de porte ereto
Gomes, Lidinalva de Resende;Santos, Roseane Cavalcanti dos;Anuncia??o Filho, Clodoaldo José da;Melo Filho, Péricles de Albuquerque;
Pesquisa Agropecuária Brasileira , 2007, DOI: 10.1590/S0100-204X2007000700010
Abstract: the objective of this work was to estimate stability and adaptability parameters, related to pod and seed yields, of nine peanut genotypes evaluated in eight environments of pernambuco state, brazil. a randomized block design was used with five replicates. the method of eberhart & russell was utilized. the genotypes br1, brs havana, brs 151 l7, cnpa 280 am e l7 beje showed high pod and seed production, with yield averages of 3,106 kg ha-1 and 2,068 kg ha-1, respectively. however, taking into account both pod and seed yields, brs 151 l7 showed high production, broad adaptability and previsible behavior in the environmental conditions evaluated; and genotypes br 1, brs havana and l7 beje were also highly adapted and stable, but only for seed yield.
Detec??o de allexivírus em primórdios foliares de alho via RT-PCR
Nascimento, Robson José do;Pio-Ribeiro, Gilvan;Santos, Roseane Cavalcanti dos;Melo Filho, Péricles de Albuquerque;
Summa Phytopathologica , 2008, DOI: 10.1590/S0100-54052008000300014
Abstract: cloves crop is a routinely practice often used in procedures for detecting allexiviruses in garlic bulbs to obtainment foliar tissue to be analyzed by serological and/or molecular tests. the availability of the plants under greenhouse implies is expenses with the maintenance and requires abaut 30 days. in areas free of these viruses, there is also the risk of their introduction and dissemination. this study presents an adjustment of protocol aiming a fast detection of allexiviruses, using primordial leaves. cloves of consumption-garlic, from rio grande do sul, brazil, and imported from argentina were dissected for obtaining primordial leaves and total rna extraction, using 0,1g of tissue of each sample. rt-pcr reactions were performed with a pair of primers able to amplify a 500 bp fragment, corresponding to the internal region of the coat protein gene from several species of allexivirus genus. a band in the expected height (500 pb) was visualized in agarose gels and further confirmed using southern blot test and by sequencing as garlic virus c (garv-c, ay170322.1). total rna obtained from foliar primordia of cloves and its use in rt-pcr analysis is an economic, fast and secure methodology for allexivirus detection in garlic bulbs.
Mudan?as bioquímicas em genótipos de amendoim submetidos a déficit hídrico moderado
Pereira, Jacqueline Wanessa de Lima;Melo Filho, Péricles de Albuquerque;Albuquerque, Manoel Bandeira;Nogueira, Rejane Jurema Mansur Custódio;Santos, Roseane Cavalcanti;
Revista Ciência Agron?mica , 2012, DOI: 10.1590/S1806-66902012000400019
Abstract: five peanut genotypes, with different growth habits were submitted to moderate water stress in a greenhouse for seven days. seeds were planted in 15-litre pots containing soil and a substrate (plantmax?), both optimized for the crop. the adopted experimental design was completely randomized, using a 5 x 2 bi-factorial scheme(5 genotypes × 2 water treatments) with five replications. the enzymatic activities of sod, cat, apx and gpx were analyzed, as well as the carbohydrate, starch and proline. an increased activity was shown in sod and cat enzymes for all genotypes submitted to water stress, in both leaf and root, especially in the 55 437 and br1 cultivars and also in lbm branco line. proline accumulation and reduced starch were verified in all stressed genotypes, but carbohydrate content was increased just in tolerant materials. based on results, 55 437 and br1 were more tolerant to water stress, followed by lbm branco. the lbr branco shows intermediate behavior and lvipe- 06 was more sensitive.
Page 1 /360561
Display every page Item


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