Multivariate approach in the selection of superior soybean progeny which carry the RR gene

Efficiency in the use of genetic variability, whether existing or created, increases when properly explored and analysed. Incorporation of biotechnology into breeding programs has been the general practice. The challenge for the researcher is the constant development of new and improved cultivars. The aim of this experiment was to select progenies with superior characteristics, whether or not carriers of the RR gene, derived from bi-parental crosses in the soybean, with the help of multivariate techniques. The experiment was carried out in a family-type experimental design, including controls, during the agricultural year 2010/2011 and 2011/2012 in Jaboticabal in the Brazilian State of São Paulo. From the F3 generation, phenotypically superior plants were selected, which were evaluated for the following traits: number of days to flowering; number of days to maturity; height of first pod insertion; plant height at maturity; lodging; agronomic value; number of branches; number of pods per plant; 100-seed weight; number of seeds per plant; grain yield per plant. Given the results, it appears possible to select superior progeny by principal component analysis. Cluster analysis using the K-means method links progeny according to the most important characteristics in each group and identifies, by the Ward method and by means of a dendrogram, the structure of similarity and divergence between selected progeny. Both methods are effective in aiding progeny selection.

Use of mathematical models in the study of bodily growth in GIFT strain Nile tilapia

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Gas exchanges in annonaceae species under different crop protections

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Persistência e liberação de elementos da fitomassa do consórcio crotalária com milheto sob fragmentação

Objetivou-se, com esse trabalho, avaliar a taxa de decomposição e a velocidade de liberação de macronutrientes e Si da fitomassa do consórcio crotalária mais milheto, em função do tempo após manejo, sem e com fragmentação. O experimento foi conduzido em condições de campo, em Botucatu-SP. O delineamento experimental foi de blocos casualizados, com quatro repetições, em esquema fatorial constituído por dois manejos da fitomassa da parte aérea (sem e com fragmentação mecânica) e seis épocas de coleta [0; 18; 32; 46; 74 e 91 dias após manejo (DAM)]. Foram determinadas a massa de matéria seca, teor de macronutrientes e Si e quantidade dos nutrientes remanescentes. Os dados foram submetidos à análise de variância, as médias dos tratamentos do fator manejo comparadas pelo teste de t (LSD) a 5% e do fator épocas de coletas ajustados a equações matemáticas. A fragmentação da fitomassa aumenta a taxa de decomposição e a liberação de N, P, Ca e S. O K é rapidamente disponibilizado, restando 91 DAM, em média, 1,5% da quantidade total acumulada. Aos 91 DAM pelo menos 80% de todos os macronutrientes já haviam sido liberados ao solo. A máxima liberação diária dos macronutrientes ocorre entre 0 a 18 DAM. A taxa de liberação de Si é constante e ocorre aumento do teor do elemento na fitomassa com o tempo devido à acentuada liberação de C. O Si é o elemento liberado mais lentamente ao solo, restando ainda 91 DAM, em média, 85% da quantidade total acumulada na fitomassa.

Action of rain on the efficiency of herbicides applied post-emergence in the control of Senna obtusifolia

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Fruit quality in the peach and nectarine with application of hydrogenated cyanamide and mineral oil

This work evaluated the quality of the fruit in peach and nectarine cultivars with and without the application of hydrogenated cyanamide and mineral oil, for two production cycles (2009 and 2010). The experiment was carried out at the School of Agricultural Science of the São Paulo State University (UNESP), at Botucatu in the Brazilian state of São Paulo, located at latitude 22º51'55 S and longitude 48º26'22 E, at an altitude of 810 m. The predominant climate type is warm temperate (mesothermal) with rains in the summer and dry in the winter. The following were evaluated: soluble solids, titratable acidity, pH, ratio, firmness, vitamin C and pulp yield. The use of hydrogenated cyanamide and mineral oil had no effect on the quality attributes of the fruit, except for pH, where those fruits under application of the products showed higher values. The cultivars all had a pulp yield greater than 90%, with 'Tourmaline' showing the highest yield (96 %). The levels of vitamin C varied according to the cultivars, where 'Marli' (16.9 mg 100 g-1) and 'Dourado-2' (16.5 mg 100 g-1), stood out for having the highest levels.

Levantamento de raças do agente causador do míldio da alface no estado de São Paulo em 2012 e 2013

Pós-graduação em Agronomia (Genética e Melhoramento de Plantas) - FCAV

Inteligência competitiva organizacional: um modelo apoiado nos comportamentos de busca, compartilhamento e uso de informação e de TIC

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Erosion of an active fault scarp leads to drainage capture in the Amazon region, Brazil

Far from the continental margin, drainage basins in Central Amazonia should be in topographic steady state; but they are not. Abandoned remnant fluvial valleys up to hundreds of square kilometers in size are observed throughout Amazonia, and are evidence of significant landscape reorganization. While major Late Miocene drainage shifts occurred due to initiation of the transcontinental Amazon River, local landscape change has remained active until today. Driven either by dynamic topography, tectonism, and/or climatic fluctuations, drainage captures in Amazonia provide a natural experiment for assessing the geomorphic response of low-slope basins to sudden, capture related base-level falls. This paper evaluates the timing of geomorphic change by examining a drainage capture event across the Baependi fault scarp involving the Cuieiras and TarumA-Mirim River basins northwest of the city of Manaus in Brazil. A system of capture-related knickpoints was generated by base-level fall following drainage capture; through numerical modeling of their initiation and propagation, the capture event is inferred to have occurred between the middle and late Pleistocene, consistent with other studies of landscape change in surrounding areas. In low-slope settings like the Amazon River basin, base-level fall can increase erosion rates by more than an order of magnitude, and moderate to large river basins can respond to episodes of base-level fall over timescales of tens to hundreds of thousands of years. Copyright (c) 2013 John Wiley & Sons, Ltd.

Mapeamento geoambiental de Espírito Santo do Pinhal e Santo Antônio do Jardim (SP)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Ocorrência da infecção por Cryptosporidium spp. em cabritos (Capra hircus)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Adaptabilidade na produção de massa verde e grãos de genótipos de milho no Tocantins

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Physiological changes in eucalyptus hybrids under different irrigation regimes

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Ecophysiology of seed germination in Digitaria insularis ((L.) Fedde)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Procuram-se braços para a lavoura: imigrantes e retirantes na economia cafeeira paulista no final do Oitocentos

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)