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Search Results: 1 - 10 of 148288 matches for " Boris; Kalazich B "
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Uso de Marcadores SSR para Identificación de Germoplasma de Papa en el Programa de Mejoramiento de INIA de Chile
Mathias R,Mónica; Sagredo D,Boris; Kalazich B,Julio;
Agricultura Técnica , 2007, DOI: 10.4067/S0365-28072007000100001
Abstract: molecular markers based on simple sequence repeats (ssr) are a very efficient tool for potato (solanum tuberosum l.) genotype identification and can be very useful for germplasm conservation and management. with the purpose of incorporate this technology into the potato breeding program of the national institute of agricultural research (inia) chile, a set of 26 ssr markers was evaluated on a sample of 71 potato genotypes. each marker was characterized for number and combinations of alleles, scoring quality, polymorphic information content (pic) and discrimination power (d). from the total, only 21 ssr markers showed up scoreable products and the allele number ranged between 2 and 17. the observed allelic combinations among the different potato genotypes ranged from 2 to 47; however, unique genotypes detected by each ssr marker ranged from 0 to 38. the observed (do) and expected (dj) discriminatory power ranged from 0.23 to 0.98 and from 0.43 to 0.92, respectively. the seven ssr markers which showed the highest do scores were stm1009 (0.98), stm1020 (0.97), stm0031 (0.97), stm2013 (0.96), stm1008 (0.94), stm1052 (0.93) and stm0019 (0.91). the stm1009, stm1020 and stm1008 markers are multi-loci ssr, where each one amplifies more than one locus of the potato genome. the utilization of the multi-loci type of marker, or combinations of several ssr markers in either pcr-multiplex or pseudo-multiplex reactions, are good options to increase the speed and reduce the cost of ssr markers application
Uso de Marcadores SSR para Identificación de Germoplasma de Papa en el Programa de Mejoramiento de INIA de Chile Use of SSR Markers to Identify Potato Germplasm in the INIA Chile Breeding Program
Mónica Mathias R,Boris Sagredo D,Julio Kalazich B
Agricultura Técnica , 2007,
Abstract: Los marcadores moleculares basados en Secuencias Simples Repetidas (SSR) constituyen una herramienta altamente eficaz para la identificación de genotipos de papa (Solanum tuberosum L.) y pueden ser de gran utilidad en la conservación y manejo de germoplasma. Con el propósito de incorporar esta tecnología al Programa de Mejoramiento de Papa del Instituto de Investigaciones Agropecuarias (INIA) de Chile, se evaluó un grupo de 26 marcadores SSR sobre una muestra de 71 genotipos de papa. Cada marcador se caracterizó según su número de alelos y sus respectivas combinaciones, calidad de lectura, contenido de información polimórfica (PIC) y poder discriminatorio (D). Del total sólo 21 marcadores SSR mostraron productos legibles con un número de alelos que varió entre 2 y 17. Las combinaciones alélicas observadas variaron desde 2 a 47; sin embargo, los genotipos únicos detectados por cada marcador fueron desde 0 a 38. El poder discriminatorio observado (Do) y esperado (Dj) estuvo entre 0,23 a 0,98 y entre 0,43 a 0,92, respectivamente. Los siete marcadores que presentaron mayor Do fueron STM1009 (0,98), STM1020 (0.97), STM0031 (0,97), STM2013 (0,96), STM1008 (0,94), STM1052 (0,93) y STM0019 (0,91). Los marcadores STM1009, STM1020 y STM1008 corresponden a SSR multi-loci, donde cada uno amplifica más de un locus desde distintas regiones del genoma de la papa. La utilización de este tipo de marcadores multi-loci, o de combinaciones de varios SSR en reacciones de PCR-múltiplex o pseudos-múltiplex son una buena alternativa para aumentar rapidez y disminuir costo en la aplicación de marcadores SSR Molecular markers based on Simple Sequence Repeats (SSR) are a very efficient tool for potato (Solanum tuberosum L.) genotype identification and can be very useful for germplasm conservation and management. With the purpose of incorporate this technology into the potato breeding program of the National Institute of Agricultural Research (INIA) Chile, a set of 26 SSR markers was evaluated on a sample of 71 potato genotypes. Each marker was characterized for number and combinations of alleles, scoring quality, polymorphic information content (PIC) and discrimination power (D). From the total, only 21 SSR markers showed up scoreable products and the allele number ranged between 2 and 17. The observed allelic combinations among the different potato genotypes ranged from 2 to 47; however, unique genotypes detected by each SSR marker ranged from 0 to 38. The observed (Do) and expected (Dj) discriminatory power ranged from 0.23 to 0.98 and from 0.43 to 0.92, respectively. The seven
Evaluation of a SCAR RYSC3 Marker of the Ry adg Gene to Select Resistant Genotypes to Potato Virus Y (PVY) in the INIA Potato Breeding Program
Sagredo D,Boris; Mathias R,Mónica; Barrientos P,Claudia; Acu?a B,Ivette; Kalazich B,Julio; Santos Rojas,José;
Chilean journal of agricultural research , 2009, DOI: 10.4067/S0718-58392009000300002
Abstract: the potato virus y (pvy) is distributed worldwide and is one of the most damaging viruses in terms of yield reduction in the potato (solanum tuberosum l.) crop with losses sometimes reaching 80%. to reduce its impact, there is great interest in obtaining varieties carrying the ryadg gene that provides extreme resistance to this virus. this could be facilitated with scar (sequence characterized amplified region) rysc3 by molecular marker-assisted selection (mas). this study compared the effectiveness of the rysc3 marker in the detection of the ryadg gene vs. biological tests on populations of the potato breeding program of the instituto de investigaciones agropecuarias (inia), chile. within the group of 71 progenitors, 30 plants had some kind of resistance to the virus, of which 17 were carriers of the rysc3 marker. these genotypes came from cornell university, centro internacional de la papa (cip), peru, and inia. the analysis of 460 progenies which came from three different crosses showed that 299 individuals amplified the rysc3 marker and had the resistant phenotype, with the exception of one plant. within the group of non-rysc3 carrier plants, a significant percentage (22.5%) showed a resistant phenotype, indicating that these progenies segregate other r genes (e.g., hypersensitivity) that reduce biological test effectiveness. this high effectiveness (99.7%) in the detection of the ryadg gene in both parents and segregating progenies, showed that this marker is appropriate in assisting selection of genotypes with extreme pvy-resistance in the potato breeding programs.
Karu-INIA, nuevo cultivar de papa para Chile
Kalazich B.,Julio; López T.,Horacio; Rojas R.,José; Acu?a B.,Ivette; Sagredo D.,Boris; Sierra B.,Carlos; Inostrosa F.,Juan; Barrientos P.,Claudia; Uribe G.,Marco; Winkler R.,Annelore; Catalán D.,Patricia; Gutierrez M.,Manuel;
Agricultura Técnica , 2004, DOI: 10.4067/S0365-28072004000400009
Abstract: karu-inia is a new potato (solanum tuberosum l.) cultivar, created from a cross between the cultivars yagana-inia x fanfare by the potato breeding program of the national agricultural research institue (inia), at the remehue regional research center, osorno, chile, in 1989. it is a semi-erect plant, with vigorous growth, a medium to large size, long oval-shaped tuber, red skin and clear yellow flesh. it is a high yielding cultivar and adapts well to the majority of the potato production areas and crop seasons in chile. it is preferred for fresh consumption, although it has fairly good frying quality, similar to yagana-inia.
Karu-INIA, nuevo cultivar de papa para Chile Karu-INIA, new potato cultivar for Chile
Julio Kalazich B.,Horacio López T.,José Rojas R.,Ivette Acu?a B.
Agricultura Técnica , 2004,
Abstract: Karu-INIA es un nuevo cultivar de papa (Solanum tuberosum L.) creado a partir del cruzamiento Yagana-INIA x Fanfare, por el Programa de Mejoramiento Genético de la Papa del Instituto de Investigaciones Agropecuarias (INIA), en el Centro Regional de Investigación Remehue, Osorno, el a o 1989. Es una planta semi erecta, de buen vigor, con tubérculos de tama o medio a grande, uniformes, de forma oval alargada, piel roja y pulpa amarilla clara. Posee altos rendimientos y se adapta bien a la mayoría de las zonas y épocas de cultivo de la papa en Chile. Su uso preferente es para consumo fresco, aunque produce una fritura de calidad altamente aceptable, similar a Yagana-INIA. Karu-INIA is a new potato (Solanum tuberosum L.) cultivar, created from a cross between the cultivars Yagana-INIA x Fanfare by the Potato Breeding Program of the National Agricultural Research Institue (INIA), at the Remehue Regional Research Center, Osorno, Chile, in 1989. It is a semi-erect plant, with vigorous growth, a medium to large size, long oval-shaped tuber, red skin and clear yellow flesh. It is a high yielding cultivar and adapts well to the majority of the potato production areas and crop seasons in Chile. It is preferred for fresh consumption, although it has fairly good frying quality, similar to Yagana-INIA.
Efficacy of Different Rates of Sexual Pheromoneof Phthorimaea operculella (Zeller) (Lepidoptera: Gellechiidae) in Maleso of PotatoTuber Moth Captures Efectividad de Distintas Dosis de Feromona Sexual de Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae) en la Captura de Machos de Polilla de la Papa
Patricia Larraín S,Michel Guillon,Julio Kalazich B,Fernando Gra?a S
Agricultura Técnica , 2007,
Abstract: Potato tuber moth (PTM), Phthorimaea operculella (Zeller), widely world distributed, is one of the most serious insect pest attacking potatoes (Solanum tuberosum L.). Larvae develop in foliage and tubers of potato causing direct losses of edible product. Chemicals treatment to control this pest have shown limited efficacy, especially when larvae is under the soil. The utilization of synthetic pheromones as a tool that interferes with insects mating had been widely demonstrated in numerous moth and others insects species. With the objective to evaluate the efficacy of different doses of pheromone per trap in PTM males captures for its future utilization as a mass trapping technique, two experiments in a complete randomized blocks design, were carried out at Valle del Elqui, Coquimbo ,egión, Chile, during the summer season 2003-2004, and spring 2004. Doses of 0.2, 0.5, 1, 2 and 5 mg and 0.05, 0.1, 0.2, and 0.5 mg of PTM sex pheromone mixture (E4-Z7 Tridecadienil acetate, and E4-Z7-Z10 Tridecatrienil acetate at rate 1:1.5) per trap were evaluated. Results showed that pheromone′s dispensers loaded with the rates of 0.2 and 0.5 mg, captured the larger numbers of PTM males per trap. With the optimization of the pheromone rate per trap, studies will continue to propose PTM mass trapping technique, a non chemical method of control, environmentally safe. La polilla de la papa, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae), es uno de los insectos plaga más importantes que atacan al cultivo de la papa (Solanum tuberosum L.). Las larvas se desarrollan en el follaje y tubérculos de papa causando pérdidas directas del producto a comercializar. Los tratamientos químicos para el control de esta plaga han mostrado eficiencia limitada, especialmente cuando la larva está bajo el suelo. La utilización de feromonas sintéticas como una herramienta que interfiere con el apareamiento, ha sido ampliamente demostrada en innumerables especies de polillas y otros insectos. Con el fin de evaluar la efectividad de diferentes dosis de feromona en la captura de machos de P. operculella, para su futura utilización como técnica de trampeo masivo, se realizaron dos ensayos en un dise o de bloques completos al azar, durante las temporadas verano 2003-2004, y primavera 2004, en el Valle del Elqui, IV Región, Chile. Dosis de 0,2; 0,5; 1; 2 y 5 mg y 0,05; 0,1; 0,2 y 0,5 mg de la mezcla de las feromonas sexuales sintéticas de la polilla de la papa (E4-Z7 Tridecadienil acetate, and E4-Z7-Z10 Tridecatrienil acetate, en tasa de 1:1,5) por trampa. Los resultados obtenidos indican qu
Efficacy of Different Rates of Sexual Pheromoneof Phthorimaea operculella (Zeller) (Lepidoptera: Gellechiidae) in Maleso of PotatoTuber Moth Captures
Larraín S,Patricia; Guillon,Michel; Kalazich B,Julio; Gra?a S,Fernando; Vásquez R,Claudia;
Agricultura Técnica , 2007, DOI: 10.4067/S0365-28072007000400011
Abstract: potato tuber moth (ptm), phthorimaea operculella (zeller), widely world distributed, is one of the most serious insect pest attacking potatoes (solanum tuberosum l.). larvae develop in foliage and tubers of potato causing direct losses of edible product. chemicals treatment to control this pest have shown limited efficacy, especially when larvae is under the soil. the utilization of synthetic pheromones as a tool that interferes with insects mating had been widely demonstrated in numerous moth and others insects species. with the objective to evaluate the efficacy of different doses of pheromone per trap in ptm males captures for its future utilization as a mass trapping technique, two experiments in a complete randomized blocks design, were carried out at valle del elqui, coquimbo ,egión, chile, during the summer season 2003-2004, and spring 2004. doses of 0.2, 0.5, 1, 2 and 5 mg and 0.05, 0.1, 0.2, and 0.5 mg of ptm sex pheromone mixture (e4-z7 tridecadienil acetate, and e4-z7-z10 tridecatrienil acetate at rate 1:1.5) per trap were evaluated. results showed that pheromone′s dispensers loaded with the rates of 0.2 and 0.5 mg, captured the larger numbers of ptm males per trap. with the optimization of the pheromone rate per trap, studies will continue to propose ptm mass trapping technique, a non chemical method of control, environmentally safe.
Primary and Secondary Appraisals in Measuring Resilience to Stress
Boris B. Velichkovsky
Psychology in Russia : State of Art , 2009,
Abstract: Measuring resilience to stress (or stress resistance) validly and reliably is an important theoretical and practical problem. Process-oriented stress theories assume that primary and secondary appraisals play an important role in determining the level of resilience. In the present study, a model of resilience based on the analysis of the interplay between primary and secondary appraisal processes is developed. Resilience is high if benign primary appraisals of taxing situations are accompanied by secondary appraisals of coping resources as being sufficient for controlling stressors. In an implementation of the model, the quality of primary appraisals is assessed through the assessment of anxiety, anger and depression, which characterize the most typical cognitive-emotional reactions to demanding situations. The assessment of secondary appraisals is restricted to the analysis of psychophysiological (functional) resources, which are involved in all forms of coping activities. The implementation of the model gives rise to a measure of resilience, which is shown to successfully predict the outcome of the stress process in a sample of Russian police officers.
Open Access Publishing - A Challenge for Russian Psychology
BORIS B. VELICHKOVSKY
Psychology Science Quarterly , 2009,
Abstract: Publication practices in Russian psychology have changed a lot since the break-up of the Soviet Union, but still differ substantially from those in the Western countries. In the last decade, an exponen-tial growth of the number of scientific psychological journals was observed, but in general, scientific publishing is not a profitable business in Russia. There is a lot of variability in the accessibility and quality of the journals. In sum, psychological publishing in today’s Russia is not well developed. Open access (OA) publishing technologies seem to bring clear benefits to Russian psychology, but there are some problems that prevent their ready acceptance. First, there is a linguistic problem – Russian read-ers and writers have bad command of foreign languages. Second, there is a problem of background – Russian readers and writers are not used to Western-style research papers. Third, there is an economic problem – it is unclear, whether Russian universities and funding agencies will ever be ready to support publications in OA-journals. Thus, self-archiving and no-fee OA seem to be the most obvious ways to introduce OA to Russian psychologists.
On an upper bound for the prime gap
Boris B. Benyaminov
Mathematics , 2011,
Abstract: We investigate logarithmic and square-root types of bounds for the general difference of two primes, $P_{k+q}-P_k$, $k, q\in\mathbb{N}$.
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