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Search Results: 1 - 10 of 68066 matches for " Erivaldo José;Branco "
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Assessment of growth and yield performance of rubber tree clones of the IAC 500 series
Gon?alves, Paulo de Souza;Scaloppi Júnior, Erivaldo José;Martins, Maria Alice;Moreno, Rogério Manoel Biagi;Branco, Roberto Botelho Ferraz;Gon?alves, Elaine Cristine Piffer;
Pesquisa Agropecuária Brasileira , 2011, DOI: 10.1590/S0100-204X2011001200009
Abstract: the objective of this work was to evaluate the performance of 15 clones of the iac 500 series of hevea brasiliensis, developed at instituto agron?mico (iac), over a 12-year period, in the northwest region of s?o paulo state, brazil. the 15 new clones evaluated are primary clones obtained from selected ortets within half-sib progenies. the clone rrim 600, of malaysian origin, was used as the control. dry rubber yield performance over a four-year period, mean girth at the tenth year, girth increment before and during tapping, thermal properties of the natural rubber produced and other characters of the laticiferous system were evaluated. forty percent of the clones were superior in comparison to the control for yield. clone iac 500 recorded the highest yield (66.81 g per tree per tapping) over four years of tapping, followed by iac 502 (62.37 g per tree per tapping), whereas the control recorded 48.71 g per tree per tapping. all selected clones were vigorous in growth. the natural rubber from this iac clones showed thermal stability up to 300oc. no differences were observed in the thermal behavior of rubber among the iac series and the rrim 600 clones. the clones iac 500, iac 501, iac 502, iac 503 and iac 506 are the more promising for small-scale plantations, due to growth and yield potential.
Correla??es e análise de trilha em clones de seringueira
Aguiar, Adriano Tosoni da Eira;Martins, Antonio Lúcio Mello;Gon?alves, Elaine Cristine Piffer;Scaloppi Júnior, Erivaldo José;Branco, Roberto Botelho Ferraz;
Revista Ceres , 2010, DOI: 10.1590/S0034-737X2010000500006
Abstract: knowledge of genotype characteristics is very important during the processes of selection and breeding. the objective of this work was to study the relationship between agronomic and anatomical traits of the bark as well the direct and indirect effects on the rubber tree yield using the path coefficient analysis. six rubber tree clones were evaluated in a randomized complete block design with four repetitions. the experiments were carried out in the agribusiness technological development cluster of the center north /apta located in pindorama (sp), brazil, during the year 2005. significant positive correlation was found only between rubber tree yield and total number of latex vessel rings (r=0.88). the girth and the total number of latex vessel rings showed the highest direct effect on the rubber tree yield. on the other hand, the virgin bark thickness and the average diameter of latex vessels showed negative direct effect with high values. the indirect selection using the total number of latex vessel rings can provide gains during the selection in rubber tree breeding programs.
Genetic variation and realized genetic gain from rubber tree improvement
Gon?alves, Paulo de Souza;Aguiar, Adriano Tosoni da Eira;Costa, Reginaldo Brito da;Gon?alves, Elaine Cristine Piffer;Scaloppi Júnior, Erivaldo José;Branco, Roberto Botelho Ferraz;
Scientia Agricola , 2009, DOI: 10.1590/S0103-90162009000100006
Abstract: breeding cycle in rubber extends to 20-30 years between pollination and yield assessment, distributed over three selection stages. five hectares of small scale trial of rubber tree [hevea brasiliensis (willd. ex adr. de juss.) muell.-arg.], was established in the northwestern region of s?o paulo state, brazil. the population comprises 98 clones mostly derived from intensively selected plus tree in the natural forest of rubber tree in the amazon. three open pollinated progeny tests were established in three experimental stations. seedlings from 98 progenies including a commercial check (cc) were planted in each one of the three locations. assessments were made when the plants were one, two and three years old. the variation among progenies for girth was highly significant in all locations examined. in the combined analysis of variance over three locations, differences among progenies were also detected, while progeny × location interaction effect was not significant. narrow sense heritability estimates on individual tree basis (hi2) were variable depending on the characteristic, age of assessment and experimental location. realized genetic gains were calculated for the plant characteristics at the age of three years, by comparing the performance of improved (selected) materials to unimproved materials (cc). the total genetic gain from the genetically tested first generation clone population at votuporanga is estimated as 25% for girth, 14% for rubber yield and 25% for bark thickness. improvement of rubber tree by selection, establishment of clonal population (isolated garden) and progeny testing is a very promising and profitable operation.
Water resources of Paraiba: a juridical and institutional approach
Erivaldo Moreira Barbosa,José Dantas Neto
Engenharia Ambiental : Pesquisa e Tecnologia , 2009,
Abstract: This article presents information on water resources management of Paraiba through a juridical and institutional approach. Therefore, legal and managerial aspects for instance, the concession on the right to use and tax the water resources, besides the procedures and position of the “Paraiba State Water Agency” – AESA , have been analyzed by the hermeneutic and systemic method. From the hermeneutics contained in the juridical documents as well as an applied questionnaire, it came to the conclusion that the concession has being partially implemented since the files have not been concluded yet. In relation to the taxing, the government proposal has not been made yet; in relation to AESA management procedures, there is a process of deconcentration causing consequently, a relative power centralization in the hands of the Executive power as well as the negligent attention by the government in relation to the effective society participation in state water resources issues.
Clonagem de quatro espécies de Annonaceae potenciais como porta-enxertos
Scaloppi Junior, Erivaldo José;Martins, Antonio Baldo Geraldo;
Revista Brasileira de Fruticultura , 2003, DOI: 10.1590/S0100-29452003000200026
Abstract: this work aimed to study the rooting capacity of four rootstocks (annona glabra l., annona montana macfad, rollinia emarginata and rollinia mucosa baill.) for annonaceae species. the experiment was carried out at unesp/fcav (21o15'22"s and 48o18'58"w). apical leafy cuttings were treated (5 seconds) with different concentrations of indolbutiric acid (iba) (0, 1000, 3000, 5000 and 7000 mg.l-1). after the treatment, the cuttings were placed in drilled box supplied with vermiculite under intermitent mist inside a lathhouse. it was used experimental design completely randomized in factorial scheme. after 90 days the evaluations were made for: percentage of rooted and survived cuttings, number and length of roots. the iba did not increase the rooting in the species. a. glabra and a. montana showed to be promising to cutting in summer. r. emarginata presented low values for all the evaluated characteristics and experiments must be intensified to promote the rooting. r. mucosa did not present satisfactory results, and the causes must be investigated better. for all the evaluated characteristics, the annona species presented better values in relation to rollinia.
Clonagem de quatro espécies de Annonaceae potenciais como porta-enxertos
Scaloppi Junior Erivaldo José,Martins Antonio Baldo Geraldo
Revista Brasileira de Fruticultura , 2003,
Abstract: O trabalho objetivou o estudo da capacidade de enraizamento de quatro espécies de Annonaceae potenciais como porta-enxertos (Annona glabra L., Annona montana Macfad, Rollinia emarginata e Rollinia mucosa Baill.) em três épocas do ano (ver o, outono e inverno). Experimento conduzido em camara de nebuliza o intermitente pertencente à UNESP/FCAV (21o15'22"S e 48o18'58"W), utilizando-se de estacas apicais enfolhadas em tratamento rápido (5 segundos) com ácido indolbutírico (IBA) (0; 1000; 3000; 5000 e 7000 mg.L-1), em esquema fatorial. Após 90 dias, avaliaram-se a porcentagem de estacas enraizadas, sobrevivência, comprimento e número de raízes. Como resultados, o IBA n o incrementou a capacidade de enraizamento das espécies. A época do ano foi grande influente no sucesso de enraizamento, sendo o ver o mais adequado. A. glabra e A. montana mostraram-se promissoras na propaga o vegetativa via estaquia (clonagem). R. emarginata apresentou baixos valores para as características avaliadas, devendo ser intensificados experimentos na promo o do enraizamento em rela o aos atuais valores obtidos. R. mucosa n o apresentou resultados satisfatórios, ocorrendo necrose de tecido na base das estacas, devendo as causas serem melhor investigadas. O sucesso no enraizamento de Annonaceae é dependente da espécie, tendo aquelas do gênero Annona apresentado resultados superiores em rela o às do gênero Rollinia.
Alimenta??o natural de Etropus crossotus Jordan & Gilbert (Teleostei, Pleuronectiformes, Paralichthyidae), na Arma??o do Itapocoroy, Penha, Santa Catarina, Brasil
Lunardon-Branco, Maria José;Branco, Joaquim Olinto;
Revista Brasileira de Zoologia , 2003, DOI: 10.1590/S0101-81752003000400012
Abstract: the feeding of e. crossotus was analyzed during the period from january to december 1995 using the frequency of occurrence, frequency of points and feeding index methods. the species presents a broad trophic specter and diversified, composed by 32 itens. the trophic analyses indicated the species show that the categories crustacea, polychaeta and osteichthyes were the most exploited resources.
Ecologia trófica de Portunus spinimanus Latreille (Decapoda, Portunidae) na Arma??o do Itapocoroy, Penha, Santa Catarina, Brasil
Branco, Joaquim Olinto;Lunardon-Branco, Maria José;
Revista Brasileira de Zoologia , 2002, DOI: 10.1590/S0101-81752002000300009
Abstract: the feeding of p. spinunanus latreille, 1819 was analyzed from january to december 1995 using the frequency of occurrence, frequency of points and feeding index methods. the species presents a broad trophic specter and diversified, composed by 24 items. the trophic analyses indicated the species show that the categories crustacea, osteichthyes, echinodennata and mollusca were the rnostexploited resources.
Alimenta o natural de Etropus crossotus Jordan & Gilbert (Teleostei, Pleuronectiformes, Paralichthyidae), na Arma o do Itapocoroy, Penha, Santa Catarina, Brasil
Lunardon-Branco Maria José,Branco Joaquim Olinto
Revista Brasileira de Zoologia , 2003,
Abstract: The feeding of E. crossotus was analyzed during the period from January to December 1995 using the frequency of occurrence, frequency of points and feeding index methods. The species presents a broad trophic specter and diversified, composed by 32 itens. The trophic analyses indicated the species show that the categories Crustacea, Polychaeta and Osteichthyes were the most exploited resources.
Caracteriza??o espectral de áreas de gramíneas forrageiras infectadas com a doen?a "mela-das-sementes da braquiária" por meio de imagens CCD/CBERS-2
Rosatti, José C.;Silva, Erivaldo A. da;Silva, Hélio R.;Kruppa, Pedro C.;
Engenharia Agrícola , 2006, DOI: 10.1590/S0100-69162006000300019
Abstract: ccd/cbers-2 images in the spectral bands of ccd2, ccd3 and ccd4 of the years 2004 and 2005, from mirante do paranapanema - sp (brazil), were transformed into surface reflectance images using the 5s atmospheric correction model and radiometrically normalized. the main objective was to spectrally characterize pastures of brachiaria brizantha in the flowering phase, exempt and infected with the disease "mela-das-sementes da braquiária" making it possible its detection through the comparison among the sbrf - surface bidirectional reflectance factor values. at the same time, it was aimed to evaluate the effectiveness of the ccd/cbers-2 images to obtain spectral responses of pastures. the healthy and diseased vegetation canopies were identified through the analysis of the surface reflectance values and the observed data of the accumulative crop water stress index (acwsi) obtained from the study area. the results indicated that the main differences were the decrease of the reflectance in the ccd3 band and the increase of the reflectance in the ccd4 band in the diseased areas. using the ccd/cbers-2 data associated with the acwsi, the methodology was effective to discriminate the vegetation canopies infected with the "mela-das-sementes da braquiária".
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