Journal Article Culturable endophytic bacterial communities associated with field‐grown soybean Get access K.B. de Almeida Lopes, Lopes Agronomy Department Post Graduation Program in Londrina State University PR Brazil Search for other works by this author on: Oxford Academic Google Scholar V. Carpentieri‐Pipolo, Carpentieri‐Pipolo Embrapa Trigo Passo Fundo RS T.H. Oro, Oro E. Stefani Pagliosa, Pagliosa G. Degrassi Industrial Biotechnology Group International Center Genetic Engineering and...

This research was aimed at identifying and characterizing endophytic micro-organisms associated with soybean that have antimicrobial activity towards pathogens.Soybean plants were collected from field trials in four locations of southern Brazil cultivated conventional (C) transgenic glyphosate-resistant (GR) soybeans. Endophytic bacteria isolated roots, stems leaves soybeans evaluated for their capacity to inhibit fungal bacterial plant pathogens 13 identified antagonistic activity....

Increased synthesis of galactinol and raffinose family oligosaccharides (RFOs) has been reported in vegetative tissues response to a range abiotic stresses. In this work, we evaluated the transcriptional profile Coffea canephora synthase gene (CcGolS1) two clones that differed tolerance water deficit order assess contribution drought tolerance. The expression CcGolS1 leaves was differentially regulated by deficit, depending on intensity stress genotype. clone 109A (drought-susceptible),...

The long juvenile period (LJP) characteristic of soybean (Glycine max L. Merrill) cultivars delays flowering under short-day conditions. This trait may be important in increasing the adaptation range to low latitudes and provides greater flexibility for sowing times within same latitude. inheritance was studied MG/BR22 (Garimpo) cultivar provide knowledge support development adapted short day Four ('Paraná', 'Bossier', 'Bragg', 'Davis') were crossed among each other with MG/BR 22...

The RAPD and SSR markers were used to compare the genetic diversity among 16 maize inbred lines. Twenty-two primers in reactions, resulting amplification of 265 fragments, while pairs resulted 75 fragments. similarity based on Dice coefficient for ranged from 53 84% 11 82%. dendrogram obtained by showed five groups, three groups one isolated line. association constructed principal coordinate’s analysis separated lines into two according endosperm color, either orange or yellow. effective...

A acerola (Malpighia emarginata) é uma frutífera tropical encontrada nativa na América Central e no Norte da do Sul, sendo de grande importância econômica social devido ao seu alto conteúdo vitamina C (ácido ascórbico). Pomares têm sido preferencialmente estabelecidos por métodos propagação vegetiva. No entanto, a sexuada sementes igualmente utilizada permite revelar um grau polimorfismo cultura, possibilitando identificação genótipos portadores características interesse agronômico. Vinte...

Curtobacterium sp. GD1 was isolated from leaves of conventionally grown soybean in Brazil. It noteworthy that among all bacteria previously the same origin, only showed a strong chitinase activity. The enzyme secreted and its production induced by presence colloidal chitin medium. partially purified characterized: molecular weight approximately 37 kDa specific activity 90.8 U/mg. Furthermore, genome sequenced analyzed. Our isolate formed phylogenetic cluster with four other spp. strains,...

Este trabalho teve por objetivo identificar e selecionar genótipos parentais de acerola (Malpighia emarginata L.) adequadas a programas melhoramento genético. Nove caracteres quantitativos maior importância agronômica foram usados para determinação da distância genética formação grupos similares acessos. O agrupamento pelo método Tocher, partir das distâncias generalizadas Mahalanobis, possibilitou divisão 14 em três grupos. Com base na divergência no caráter agronômico-chave (teor vitamina...

O objetivo deste trabalho foi avaliar a eficiência de diferentes métodos estratificação ambiental, representatividade dos locais avaliação, e adaptabilidade estabilidade genótipos soja, por meio ensaios produtividade grãos, nos estados do Paraná Santa Catarina, anos agrícolas 2000 2003, em um total 15 ambientes. Foram utilizados, para o método tradicional Lin análise fatores aliada ao porcentual parte simples (PS%) da interação genótipo vs. ambiente (GxA). Na determinação genótipos, foram...

The objective of this work was to evaluate the genetic diversity 16 maize inbred lines, and determine correlation between distance hybrid performance, using random amplified polymorphic DNA (RAPD) molecular markers. Twenty-two different primers were used, which resulted in amplification 265 fragments, 237 (84.44%) them being polymorphic. A similarity matrix created from RAPD data, Jaccard coefficient, a dendrogram constructed. Hybrid analyses carried out block design Griffing method VI for...

Em um programa de melhoramento, o conhecimento da grandeza das associações entre caracteres interesse, é fundamental importância na obtenção populações melhoradas. O presente trabalho teve como objetivo determinar as correlações genotípicas, fenotípicas e ambientais quantitativos em milho pipoca. Foram avaliados nove genótipos pipoca dispostos no campo delineamento blocos casualizados com oito repetições. Os UEL ZP, SI PAP revelaram maiores capacidades expansão (27,50; 27,15 24,40...

O programa de melhoramento genético acerola, na Universidade Estadual Londrina, iniciou-se em 1992, com a implatação um pomar clonal constituído genótipos selecionados no Norte do Paraná. As cultivares UEL 3-Dominga , 4-Lígia, 5-Natália são resultados 5 ciclos avaliações, onde foram considerados: precocidade, produtividade, conteúdo vitamina C nos frutos, tolerância pragas e doenças, tamanho aparência dos frutos. 5- Natália, destacam-se pela produtividade das plantas, pelo fruto. Em...

Coffee quality is directly related to the harvest and post conditions.Non-uniform maturation of coffee fruits, combined with inadequate harvest, negatively affects final product.Pectin methylesterase (PME) plays an important role in fruit softening due hydrolysis methylester groups cell wall pectins.In order characterize changes occurring during maturation, enzymatic activity PME was measured different stages ripening.PME progressively increased from beginning ripening process cherry...

For many decades, rhizosphere bacteria have been studied for their potential to promote crop growth and control certain pathogens.Compared the studies conducted, there are relatively few examples of microbial inoculants based on that had commercial success, mainly due strong competition present in rhizosphere.In last twenty years, endophytes multiplied, also above all as a possible alternative rhizobacteria, development capable replacing some agrochemicals reducing environmental impact...

A associação entre a produtividade e outras características da planta identifica caracteres para uso na seleção indireta produtividade. Com objetivo de identificar parentais serem incluídos em um programa melhoramento, foram avaliadas trinta quatro linhagens soja doze (peso sementes por parcela, altura planta, primeira vagem, número vagens com grão, dois grãos, três diâmetro do caule, peso haste mais casca, cem sementes, dias florescimento maturação). Esta pesquisa procurou quantificar estas...

O objetivo deste estudo foi avaliar, por meio de topcrosses, o potencial heterótico 14 populações milho pipoca. No ano agrícola 1997/1998, foram obtidos os híbridos topcrosses resultantes dos cruzamentos das com testador, que se constituiu da mistura eqüitativa sementes todas as populações. 1999/2000, e avaliados em dois experimentos, delineamento blocos ao acaso, três repetições. Foram estimados parâmetros genéticos, realizadas análises variância Com base nos resultados capacidade geral...

RAPD molecular markers were used to analyze genetic diversity between 16 corn lines. Twenty-two primers resulting in the amplification of 265 fragments, which 237 (84.44%) polymorphic. Using UPGMA method associations obtained showed 5 distinct heterotic groups. A principal coordinates analysis also an association lines groups, agreement with results observed dendrogram. bootstrap procedure was applied verify whether amount sufficient ensure reliability results, a coefficient variation 8.3%,...

The objective of this work was to determine the inheritance long juvenile period trait in natural variants Doko, BR 9 (Savana), Davis, Embrapa 1 (IAS 5RC), and 16 soybean cultivars. Complete diallel crosses were made between Doko cultivars their variants. A 3:1 segregation ratio observed F2 populations 'Doko' x Doko-18T, Doko-Milionária, 'Davis' São Carlos, 'BR (Savana)' MABR92-836 (Savanão) crosses, indicating that is controlled by a pair recessive genes. difference late flowering cultivar...

The purpose of this study was to investigate the diversity 14 popcorn populations and a broad genetic base tester using molecular RAPD markers estimate correlation between distances performance top-cross hybrids. For evaluation hybrids resulting from topcrosses, reduced model Gardner used. A distance matrix generated based on by Jaccard coefficient, dendrogram constructed. In general, topcrosses performed better than per se evidenced heterosis occurrence in topcrosses. trait grain weight is...