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Search Results: 1 - 10 of 220020 matches for " Fernando Sebastián; Cointry "
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Caracteres agronómicos en el cultivo de espárrago de diferentes edades y manejos
Asprelli, Pablo Diego;López Anido, Fernando Sebastián;Cointry, Enrique Luis;
Pesquisa Agropecuária Brasileira , 2005, DOI: 10.1590/S0100-204X2005000100007
Abstract: age and crop system effects on agronomic response were evaluated in 11 hybrids of asparagus officinalis l. the experimental design was a complete randomized block with three replicates of 20 plants of 3 or 4 years old, conducted either in mounded soil over plants for blanched asparagus, or in raised beds without ridging for green asparagus. the highest mean values were obtained under the blanched production for days to harvest, market yield, total yield, spears number and the spear mean weight. however, under the green production, the rate of increment from first to second year was superior for market yield and total yield due to an augmented rate of increment of spears number. type and year of production effects were similar for days to first harvest and spears mean weight, meanwhile days to 50% of sprout plot was affected mainly by the year of production.
Evaluación de siete poblaciones de espárrago (Asparagus officinalis L.)
GATTI, ILEANA;CRAVERO, VANINA PAMELA;LóPEZ ANIDO, FERNANDO SEBASTIáN;COINTRY, ENRIQUE LUIS;
Pesquisa Agropecuária Brasileira , 2000, DOI: 10.1590/S0100-204X2000000600011
Abstract: the materials of asparagus (asparagus officinalis l.) that growers have in use are imported by seed dealers and have been selected according to overseas markets requirements. with the aim of selecting proper parents to use in a breeding program, seven populations of asparagus officinalis (p1 to p7), all rised as white asparagus, were tested during 1993 and 1994, at the experimental field of the facultad de ciencias agrarias (universidad nacional de rosario) placed in zavalla, santa fe, argentina. the evaluation was made on individual plant in a 40 days of harvest period. anova and a cluster analysis were made. in order to improve total and marketable yield, p1, p2 and p3 should be used as females regarding that these ones also have high spear number. to improve spears weight and diameter as well as late production, p5 and p7 are recommended as males, but it should be considered that p5 has a better yield performance.
Aplicación de ácido giberélico en alcaucil
García, Stella Maris;Firpo, Inés Teresa;Anido, Fernando Sebastián López;Cointry, Enrique Luis;
Pesquisa Agropecuária Brasileira , 1999, DOI: 10.1590/S0100-204X1999000500009
Abstract: the production of globe artichoke (cynara scolymus l.) in the horticultural rosary belt (33o 1' s.l and 60o 59' w.l) is concentrated from august to october. in order to increase the profitability it is necessary to bring toward the crop date to the months of higher prices, which could be achieved with the pulverisation of exogenous gibberellic acid (ga3). the behaviour of cultivars grouped according to their precociousness as compared to the application of ga3 as well as effect on the gross revenue were evaluated. a randomised complete block design with two replications was used. fifty ppm of ga3 in april supplemented with 25 ppm were applied in may of 1994 and 1995. the number of heads per hectare, the average weight, the head diameter and height, yield, the average weight of the first range head, days to crop and crop days, were analysed through an anova with 2 classification criteria for each year and in a combined year analysis. the application of ga3 in 1994 brought the production 52 days forward for the group i, 6 days for group ii and only 3 days for group iii, extending the crop days in 60, 8 and 3 days, respectively, showing equal trend in 1995. there were no significant modifications for the rest of the variables in the two trial years. the application of ga3 generated an increase in gross revenue, depending on its magnitude, on the evaluated years and on the analysed group.
Evaluación de siete poblaciones de espárrago (Asparagus officinalis L.)
GATTI ILEANA,CRAVERO VANINA PAMELA,LóPEZ ANIDO FERNANDO SEBASTIáN,COINTRY ENRIQUE LUIS
Pesquisa Agropecuária Brasileira , 2000,
Abstract: Los materiales de espárrago (Asparagus officinalis L.) utilizados hasta el momento por los productores son introducciones realizadas por las casas semilleras y han sido seleccionados para satisfacer requerimientos del mercado de los sitios de origen. El objetivo del siguiente trabajo es evaluar siete poblaciones de espárrago (P1 a P7), con el fin de seleccionar genitores adecuados de manera de recurrir a la hibridación de ellos para obtener materiales adaptados a los requerimientos locales. Las evaluaciones se hicieron sobre plantas individuales, separadas por sexos y manejadas como espárrago blanco, durante los a os 1993 y 1994, en el campo experimental de la Facultad de Ciencias Agrarias (Universidad Nacional de Rosario), ubicado en Zavalla, provincia de Santa Fe. La evaluación se realizó sobre planta individual, durante un período de 40 días de cosecha y con los datos obtenidos se realizó un ANOVA y un análisis de agrupamiento. Para elegir progenitores femeninos con altos rendimientos y rendimiento de mercado se determinó que se deberá recurrir a las P1, P2 y P3, las cuales presentan también alto número de turiones. Para altos peso medio y diámetro de turión, así como producción tardía, son indicadas las P5 y P7 como genitores masculinos, teniendo en cuenta que, mientras la P7 presenta bajo rendimiento, la P5 aportaría mejores producciones.
Early selection of elite plants in Asparagus
COINTRY ENRIQUE LUIS,LóPEZ ANIDO FERNANDO SEBASTIáN,GATTI ILEANA,CRAVERO VANINA PAMELA
Bragantia , 2000,
Abstract: In order to establish an efficient selection criterion the variability in three asparagus populations was evaluated defining the most important yield components and analysing its evolution along three growing seasons. The yield components, coefficient of variation (CV) and the proportion of plants contributing to 80% of the total yield were estimated. The elite plants were selected by mean of total yield and clusters techniques. Multiple regression showed that spear number (SN) and spear weight (SW) were the most important yield components. In every population, total yield (TY) and SN showed the highest values of CV, independently of sex. 69% of the plants contributed to the 80% of the total yield in the first year while in the second and third year the contribution was 57%. At the end of the third year, 17 plants were selected by the average of the total yield and 43 by clusters. It is suggested to select for SW in the first year, reducing in 68% the experimental material. In the second year, the selection for SN would reduce to 5% the plants to evaluate for total yield in the third year. In this way the selected plants are the same but the number of plants to evaluate is dramatically reduced along the years, therefore facilitating the breeders work.
Relationships among agronomic traits and seed yield in pea
Espósito,María Andrea; Martin,Eugenia Alejandra; Cravero,Vanina Pamela; Liberatti,David; López Anido,Fernando Sebastián; Cointry,Enrique Luis;
BAG. Journal of basic and applied genetics , 2009,
Abstract: the evaluation of selection criteria using correlation coefficients, multiple regression and path analysis was carried out for a period of two years on forty pea genotypes. the correlation analysis revealed that grain yield had genotypic relationships with numbers of pods, seeds per plot, length of the internodes and plant height in 2007 and also with grain diameter, length and width of leaflets and number of nodes at the first pod in 2008. the highest positive direct effects in 2007 were length of the internodes (0.68), seeds per plot (0.38) and numbers of pods (0.26). length leaflets exhibited a negative direct effect (-0.46). the highest positive indirect contribution of plant height mediated by length of the internodes was 0.50. the highest negative indirect contribution was pod length via length of the internodes (-0.35). in 2008, the highest positive direct effects were seeds per plot (0.67), width leaflets (0.33) and numbers of pods (0.25). length leaflets presented the highest negative direct effect (-0.34). the indirect effects were observed via seeds per plot, length and width leaflets; therefore numbers of pods and seeds per plot can be used for indirect selection. the parameter estimated showed that number of pods and seeds, and pod length determined the yield during 2007 and number of pod and seeds, and grain diameter during 2008. the r2 values for both models were 0.60 and 0.89 respectively. the number of pod and seeds per plot were the main components of seed yield, having the maximum direct effects on this trait. these results might be used as selection criteria in order to increase the selection efficiency in pea breeding programs.
Early selection of elite plants in Asparagus
COINTRY, ENRIQUE LUIS;LóPEZ ANIDO, FERNANDO SEBASTIáN;GATTI, ILEANA;CRAVERO, VANINA PAMELA;FIRPO, INéS TERESA;GARCíA, STELLA MARIS;
Bragantia , 2000, DOI: 10.1590/S0006-87052000000100005
Abstract: in order to establish an efficient selection criterion the variability in three asparagus populations was evaluated defining the most important yield components and analysing its evolution along three growing seasons. the yield components, coefficient of variation (cv) and the proportion of plants contributing to 80% of the total yield were estimated. the elite plants were selected by mean of total yield and clusters techniques. multiple regression showed that spear number (sn) and spear weight (sw) were the most important yield components. in every population, total yield (ty) and sn showed the highest values of cv, independently of sex. 69% of the plants contributed to the 80% of the total yield in the first year while in the second and third year the contribution was 57%. at the end of the third year, 17 plants were selected by the average of the total yield and 43 by clusters. it is suggested to select for sw in the first year, reducing in 68% the experimental material. in the second year, the selection for sn would reduce to 5% the plants to evaluate for total yield in the third year. in this way the selected plants are the same but the number of plants to evaluate is dramatically reduced along the years, therefore facilitating the breeders work.
A morphology-based phylogeny of Phymaturus (Iguania: Liolaemidae) with the description of four new species from Argentina
Lobo, Fernando;Quinteros, Sebastián;
Papéis Avulsos de Zoologia (S?o Paulo) , 2005, DOI: 10.1590/S0031-10492005001300001
Abstract: phylogenetic relationships within the liolaemid lizard genus phymaturus were studied using parsimony analysis of morphological data. the data set includes 133 characters: 28 described in the literature as apomorphies of the three genera of liolaemidae (ctenoblepharys, liolaemus, and phymaturus), 21 published characters of allozymes and karyology, 53 characters taken from external morphology across all terminals of phymaturus, and 31 from the skeletal anatomy. this data set includes representatives of 10 of the 12 species currently recognized in the literature plus twelve other terminals considered in this study and representing independent lineages assigned to patagonicus or palluma. four of these terminals are described in the present study as new species, one belonging to the palluma group and the other three to the patagonicus group. we performed four analyses using different methods of coding binary polymorphic characters, and a new method for treating continuous characters. the traditional division of the genus in two groups is not supported here, with the patagonicus group resulting paraphyletic in some of the analyses. the palluma group is monophyletic and supported by many characters. a majority rule consensus tree of all runs recovers a reasonably well-resolved topology of the group. all analyses recovered a northern subclade within the palluma group, formed by species distributed in argentina from northern of san juan province (north to 30 degrees of latitude). in this analysis palluma from el planchón (chile) was found to be more closely related to this northern subclade than any other "palluma" form.
Análisis bibliométrico de la revista “Educación” de la Pontificia Universidad Católica del Perú (1992-2005)
Fernando Sebastián Blanco Olea
Alexandría : Revista de Ciencias de la Información , 2010,
Abstract: La presente investigación establece un panorama general de la revista “Educación” de la Pontificia Universidad Católica del Perú durante el periodo 1992-2005, por medio del análisis bibliométrico de la información bibliográfica presente en los 27 números que comprende la revista en dicho periodo. Para ello, se calcularon y analizaron los indicadores de producción (índice de productividad de Lotka, índice de cooperación o número de firmas/trabajo, índice de referencias por artículo); y los indicadores de consumo (distribución de referencias según el país de origen, idioma, etc.; índice de aislamiento; índice de Price; y vida media de las referencias). Asimismo, se realizó un análisis de contenido de los artículos; y se evaluó el grado de cumplimiento, por parte de la revista, de los criterios establecidos por tres sistemas de bases de datos de revistas científicas latinoamericanas: Latindex, Redalyc y SciELO. -- This research provides an overview of the journal “Educación” of the Pontifical Catholic University of Peru during 1992 – 2005 through a bibliometric analysis of the bibliographic information of the 27 issues covered by the journal during that period. In order to do this, productivity indicators (Lotka’s productivity index, cooperation index and references-per-article index) and consumption indicators (references distribution according to their country of origin, language, etc; isolation index, Price’s index and references average life) were calculated and analyzed. Additionally, a content analysis of the articles was carried out and Educación’s fulfillment level of three Latin American scientific journals indexing systems (Latindex, Redalyc and SciELO) requirements was evaluated.
Urinary Excretion of microRNAs in Young Fabry Disease Patients with Mild or Absent Nephropathy  [PDF]
Sebastián Jaurretche, Graciela Venera, Norberto Antongiovanni, Fernando Perretta, Germán R. Perez
Open Journal of Nephrology (OJNeph) , 2018, DOI: 10.4236/ojneph.2018.83009
Abstract: Fabry disease (FD) clinical manifestations often start in childhood. Among the FD complications, renal failure causes significant morbidity and mortality. Early diagnosis and treatment of FD nephropathy in children may be critical to preserve renal function. In proteinuric progressive nephropathies it has been described that pro-fibrotic miR-21, miR-192, and miR-433 families are activated and that anti-fibrotic miR-29 and miR-200 families are inhibited. Objective: Analyze urinary excretion of microRNAs related to renal fibrosis in FD patients with mild or absent nephropathy. Patients with confirmed diagnosis of FD under 18 years of age were compared with healthy subjects. Patients were classified into two groups: 1) Patients with urinary excretion profile of microRNAs indicative of renal fibrosis; and 2) Patients with urinary excretion profile of microRNAs not indicative of renal fibrosis. Results: 9 healthy subjects were enrolled in the study (18.66 ± 13.43 years), 4 males and 5 females. All of them presented normal eFGR without pathological albuminuria. FD population: 12 patients (10.33 ± 3.93 years) were studied, 5 males and 7 females. Patients presented 2 different genotypes: L415P (6 patients) and E398X (6 patients). The urinary excretion profile of microRNAs indicative of renal fibrosis was present in 4 patients (2 with L415P genotype and 2 with E398X genotype), all of them with a decreased of miR-29 and/or miR-200. No patient presented increased miR-21, miR-192 and/or miR-433. Decreased α-gal-A activity was the only variable associated with statistical significance (p ≤ 0.01) to urinary excretion profile of microRNA indicative of renal fibrosis. Conclusions: Young FD patients with classical mutations of GLA gene and mild or absent nephropathy could present a profile of urinary excretion of microRNAs indicative of renal fibrosis associated with decreased α-gal-A activity independently of the other variables. Our findings could suggest a regulation of microRNAs not mediated by TGF-β in FD nephropathy.
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