Effect of polymers associated with N and K fertilizer sources and Dendrathema grandiforum growth and K, Ca and Mg relations.

This study was conducted to evaluate the effect of polymer used with different nitrogen and potassium sources on the growth and nutrition of chrysanthemum (Dendranthema grandiforum, var. "Virginal") and on chemical characteristics of substrate. Two substrates were evaluated: 1) composite with 50 % organic soil, 45 % sand, and 5 % composted tobacco; 2) plow layer soil (0-20 cm depth; red oxisol typical dystrophic). The experimental design was a factorial (4x2x2) and included four polymer rates (0, 1, 2, and 4 g kg-1of substrate), two nitrogen ((NH4)2SO4 and (H2N)2CO), and two potassium (KCl and K2SO4) sources. Dry biomass, flower number, and concentration of K, Ca, and Mg were evaluated. Inverse relationships between polymer rates and plant biomass, macronutrient uptake were noticed, regardless substrate or nutrient source

Phylogeny and chromosomal diversification in the <i>Dichroplus elongatus</i> species group (Orthoptera, Melanoplinae)

In an attempt to track the chromosomal differentiation in the Dichroplus elongatus species group, we analyzed the karyotypes of four species with classical cytogenetic and mapping several multigene families through fluorescent in situ hybridization (FISH). We improved the taxon sampling of the D. elongatus species group adding new molecular data to infer the phylogeny of the genus and reconstruct the karyotype evolution. Our molecular analyses recovered a fully resolved tree with no evidence for the monophyly of Dichroplus. However, we recovered several stable clades within the genus, including the D. elongatus species group, under the different strategies of tree analyses (Maximum Parsimony and Maximum Likelihood). The chromosomal data revealed minor variation in the D. elongatus species group's karyotypes caused by chromosome rearrangements compared to the phylogenetically related D. maculipennis species group. The karyotypes of D. intermedius and D. exilis described herein showed the standard characteristics found in most Dichroplini, 2n = 23/24, X0♂ XX♀, Fundamental number (FN) = 23/24. However, we noticed two established pericentric inversions in D. intermedius karyotype, raising the FN to 27♂/28♀. A strong variation in the heterochromatic blocks distribution was evidenced at interespecific level. The multigene families' mapping revealed significant variation, mainly in rDNA clusters. These variations are probably caused by micro chromosomal changes, such as movement of transposable elements (TEs) and ectopic recombination. These observations suggest a high genomic dynamism for these repetitive DNA sequences in related species. The reconstruction of the chromosome character "variation in the FN" posits the FN = 23/24 as the ancestral state, and it is hypothesized that variations due to pericentric inversions has arisen independently three times in the evolutionary history of Dichroplus. One of these independent events occurred in the D. elongatus species group, where D. intermedius is the unique case with the highest FN described in the tribe Dichroplini.Centro de Estudios Parasitológicos y de VectoresFacultad de Ciencias Naturales y Muse

Avaliação de atributos físico-químicos e sensoriais de sucos de uva elaborados com nove cultivares de uva.

XV Congresso Latino-Americano de Viticultura e Enologia E XIII Congresso Brasileiro de Viticultura e Enologia. Bento Gonçalves-RS, 3 a 7 de Novembro de 2015

BRS Bibiana: cultivar de uva tolerante à podridão cinzenta e à podridão ácida, para elaboração de vinho branco aromático, recomendada para a Serra Gaúcha.

A ‘BRS Bibiana’, que agora está sendo disponibilizada para o setor vitivinícola gaúcho, vem complementar o conjunto de cultivares brasileiras resistentes para a elaboração de vinhos que remetem aos produtos elaborados com uvas europeias, dando continuidade a esta linha de trabalho, tradicionalmente desenvolvida pelo Programa “Uvas do Brasil”. A nova cultivar constitui uma alternativa de resistência à podridão cinzenta e à podridão ácida e com alto potencial glucométrico, para a elaboração de vinhos brancos aromáticos.bitstream/item/207816/1/Circ-Tec147.pd

Cultivo protegido das uvas de mesa sem sementes "BRS Vitória" e "BRS Isis" na região da Serra Gaúcha.

A fruticultura brasileira é responsável por 16% dos empregos gerados pelo agronegócio nacional, sendo que, em média, são geradas duas novas vagas a cada hectare cultivado com frutas (ANUÁRIO..., 2018). Quando se considera o volume total produzido, independente da finalidade, a uva está incluída entre os seis produtos responsáveis por cerca de 70% do valor bruto da produção brasileira de frutas (ANUÁRIO..., 2018). No Brasil, a viticultura é praticada em uma grande extensão norte-sul, de cerca de 78.000 ha, incluindo regiões de clima temperado, subtropical e tropical. São exploradas cultivares que pertencem à espécie Vitis vinifera, híbridos de V. labrusca, além de híbridos complexos. Metade do volume total de uvas produzido no país é destinada para o consumo in natura, sendo originada principalmente em regiões de clima subtropical e tropical, nos estados de Pernambuco, da Bahia, de São Paulo, Paraná e de Minas Gerais, enquanto o segmento de uvas para processamento está concentrado na região Sul do país (MAIA et al., 2018).bitstream/item/202699/1/Circ-Tec143.pd

Phylogeny and chromosomal diversification in the <i>Dichroplus elongatus</i> species group (Orthoptera, Melanoplinae)

In an attempt to track the chromosomal differentiation in the Dichroplus elongatus species group, we analyzed the karyotypes of four species with classical cytogenetic and mapping several multigene families through fluorescent in situ hybridization (FISH). We improved the taxon sampling of the D. elongatus species group adding new molecular data to infer the phylogeny of the genus and reconstruct the karyotype evolution. Our molecular analyses recovered a fully resolved tree with no evidence for the monophyly of Dichroplus. However, we recovered several stable clades within the genus, including the D. elongatus species group, under the different strategies of tree analyses (Maximum Parsimony and Maximum Likelihood). The chromosomal data revealed minor variation in the D. elongatus species group's karyotypes caused by chromosome rearrangements compared to the phylogenetically related D. maculipennis species group. The karyotypes of D. intermedius and D. exilis described herein showed the standard characteristics found in most Dichroplini, 2n = 23/24, X0♂ XX♀, Fundamental number (FN) = 23/24. However, we noticed two established pericentric inversions in D. intermedius karyotype, raising the FN to 27♂/28♀. A strong variation in the heterochromatic blocks distribution was evidenced at interespecific level. The multigene families' mapping revealed significant variation, mainly in rDNA clusters. These variations are probably caused by micro chromosomal changes, such as movement of transposable elements (TEs) and ectopic recombination. These observations suggest a high genomic dynamism for these repetitive DNA sequences in related species. The reconstruction of the chromosome character "variation in the FN" posits the FN = 23/24 as the ancestral state, and it is hypothesized that variations due to pericentric inversions has arisen independently three times in the evolutionary history of Dichroplus. One of these independent events occurred in the D. elongatus species group, where D. intermedius is the unique case with the highest FN described in the tribe Dichroplini.Centro de Estudios Parasitológicos y de VectoresFacultad de Ciencias Naturales y Muse

"Heavy metal" en las plantas: la mostaza etíope como especie fitorremediadora de sedimentos contaminados con metales pesados

Trabajo presentado en el 39º Congreso Argentino de Horticultura ("Valorización para nuevas oportunidades"), celebrado en Santa Fé (Argentina) del 26 al 29 de septiembre de 2016.La mostaza etíope (Brassica carinata L.) es una especie que se cultiva en diferentes lugares del mundo como oleaginosa, hortícola y condimentaria. La misma ha sido reconocida como tolerante a diversos metales pesados, pudiendo suponer su potencial de fitorremediación. A tal fin, se tomó una muestra de sedimentos en la cuenca baja del río Matanza-Riachuelo, sector que presenta contaminación con metales pesados, se acondicionó y se colocó en macetas realizando seis tratamientos con distintas proporciones de compost (C), donado de una empresa recicladora, y sedimento (S), sedimento, compost y como tratamiento control, tierra comprada. Se realizaron doce repeticiones por tratamiento. Las plántulas crecieron al aire libre en los distintos sustratos hasta cosecharlas en principio de fructificación. Se realizaron determinaciones de los metales pesados Pb, Cu, Cr en los sustratos pre trasplante, y en la biomasa vegetal. Se calculó un índice para evaluar la translocación de los metales de los sustratos a las plantas. Para la determinación de metales se realizó primero la digestión ácida de los sustratos y de los tejidos vegetales. Luego, a partir de los extractos obtenidos, se determinó la concentración de los metales mediante espectrometría de absorción atómica. Se observó la mayor extracción de los tres metales se obtuvo en sedimentos puros y en la mezcla con la proporción de 75% S y 25% C a razón de aproximadamente 50 mgkg-1 de cada metal. La concentración mayor siempre estuvo en raíces.N

Effect of polymers associated with N and K fertilizer sources and Dendrathema grandiforum growth and K, Ca and Mg relations.

This study was conducted to evaluate the effect of polymer used with different nitrogen and potassium sources on the growth and nutrition of chrysanthemum (Dendranthema grandiforum, var. "Virginal") and on chemical characteristics of substrate. Two substrates were evaluated: 1) composite with 50 % organic soil, 45 % sand, and 5 % composted tobacco; 2) plow layer soil (0-20 cm depth; red oxisol typical dystrophic). The experimental design was a factorial (4x2x2) and included four polymer rates (0, 1, 2, and 4 g kg-1of substrate), two nitrogen ((NH4)2SO4 and (H2N)2CO), and two potassium (KCl and K2SO4) sources. Dry biomass, flower number, and concentration of K, Ca, and Mg were evaluated. Inverse relationships between polymer rates and plant biomass, macronutrient uptake were noticed, regardless substrate or nutrient source.200

Aleuas uruguayensis Carbonell (Orthoptera, Acrididae, Copiocerinae): novel occurrence in the Paranaense biogeographic province

El género neotropical Aleuas Stål 1878 está constituido por nueve es - pecies distribuidas a lo largo de América del Sur. Este género se encuentra cer - canamente relacionado con Adimantus Stål 1878, Zygoclistron Rehn 1905 y Epis - copotettix Rehn 1903 (Copiocerinae). Únicamente cuatro especies de Aleuas fue - ron descriptas en distintas provincias fitogeográficas en Argentina: A. gracilis Stål 1878, A. lineatus Stål 1878, A. paranensis Carbonell 2008 y A. vitticollis Stål 1878. En este trabajo proporcionamos nuevos registros de A. uruguayensis y brindamos un mapa de distribución geográfica actualizado, incluyendo las localidades conocidas en las que se encuentra esta especie. Confirmamos la presencia de A. uruguayensis por primera vez en Argentina, en cuatro localidades distantes a 450 kilómetros al noroeste del único registro conocido. De esta manera, ampliamos el rango de distribución de la especie y realizamos un aporte al conocimiento general de la diversidad de ortópteros de Argentina