Variabilidade genética e correlações juvenil - adulto de baru (Dipteryx alata Vog.) no Município de Brasilândia - Mg

Pós-graduação em Ciência Florestal - FCA

Contribuição para a análise de aplicações de métodos de tomada de decisão com múltiplos critérios

Not available

Seleção de ingredientes ativos para o desenvolvimento de iscas tóxicas para o controle de formigas-cortadeiras (Hymenoptera: Formicidae)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Processo de seleção do sexo de espermatozóides mamíferos e método de controle de qualidade de doses de sêmen sexado congelado

A presente invenção permite produzir por centrifugação em gradiente de densidade, em empresas especializadas na produção e comercialização de sêmen congelado, doses de sêmen enriquecidas com espermatozóides portadores do cromossomo X ou Y, sem comprometer a capacidade fecundante destes espermatozóides. Pela presente invenção, doses de espermatozóides contendo ambos espermatozóides X e Y podem ser separadas para produzir sub populações de espermatozóides enriquecidas em portadores do cromossomo X ou Y, as quais são substancialmente puras em relação ao espermatozóide desejado e substancialmente livres do outro tipo de espermatozóide.

Seleção de características morfofuncionais de cavalos da raça Mangalarga Marchador por meio da análise de componentes principais

Records from 14,288 animals of the Mangalarga Marchador breed, born from 1990 to 2005, were used to discard morphofunctional traits in a principal component analysis. The following traits were used: height at withers, height at croup, lengths of head, neck, back, croup, hip length and body, widths of head, hip width, thorax perimeter, cannon bone circumference and gait score. For the traits considered it was observed that 7 principal components showed variation lower than 0.7; suggesting that seven variables could be discarded. The reason is that when variable are highly correlated with the principal components of smaller variance, their variation is practically insignificant. Based on those results the recommendation is to maintain the following traits for future research with this database: gait score, height at croup, length of back, length of croup, width of head and cannon bone circumference.

Parâmetros genéticos em progênies de polinização aberta de Enterolobium contortisiliquum (Vell.) Morong em Luiz Antonio, SP, Brasil

The aim of this study was to estimate the genetic parameters on a progeny test of Enterolobium contortisiliquum, located at the Fazenda Experimental de Luíz Antônio (IF-SP), São Paulo State, Brazil, for genetic selection and seed production. The coefficients of genetic variation and heritability, as well as the genetic and phenotypic correlations for the silvicultural traits diameter at breast height (DBH) and total height of plants at the age of 19, 20, and 21 years and bifurcation (BIF) and stem straightness (RET), at the age of 19 years were estimated. The F test of analysis of variance detected significant variation among the progeny for the traits DBH, height in the three tested ages, and straightness of the trunk, which indicates that the tested population can be improved by selection among progenies. The estimation of heritability at the level of progeny (h²m, minimum of 0.50) for all traits was high and at the levels of individual plants (h²i, minimum 0.18) and within progenies (h²d, minimum of 0.14) was medium, indicating that the population can be improved by selection among and within progenies. Significant high genetic and phenotypic correlations among pairwise growth traits of the same age were detected as well as among those with different ages. Therefore, the direct selection, of a trait allows indirect selection of another. The results showed the potential of this progeny test to enhance a seed orchard by selection and seed production for commercial and environmental reforestation plans.

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.

Testes para a seleção de populações de cenoura visando ao vigor e à longevidade das sementes

Populations of carrot seeds with superior physiological quality and storage potential are of interest to seed companies and growers. Thus, we verified the efficiency of some tests for the selection of carrot populations with greater vigor and longevity of seeds. Seeds of 50 carrots progenies of different half-brothers from Brasilia cultivar were evaluated for the mass of one hundred seeds, the first count, germination, dormancy, accelerated aging with water and saturated NaCl solution. The seeds were stored at moisture contents of 6.1±0.3% in hermetic packaging at temperatures of 15 and 25°C for 12 months and germination was evaluated quarterly. The experimental data were evaluated for variance and phenotypic, genotypic and environmental heritability, coefficient of variation and genetic gain from selection. Selection based on the mass should not be used because it would increase the occurrence of dormancy in seeds of the next generation. The test of the first count, germination and accelerated aging in water or saline solution saturated may be used to select populations of carrot seeds of higher vigor and longevity. The estimated gain genetic selection for germination after 12 months storage at 25°C was 14%.

Esverdeando a manufatura: dos fundamentos conceituais ao estudo de múltiplos casos

The purpose of this paper is to analyze the integration of environmental issues in the context of manufacturing function/production (or operations), which is considered the organizational area that should lead corporate environmental management. We present a background on the greening of the manufacturing area, especially in terms of product development, process, quality management and logistics. Four case studies of Brazilian companies are presented as part of the study, and it is found that the maturity level of these companies' environmental management tends to follow the degree to which the environment has been inserted into subareas of production, especially in the process of product development. However, difficulties encountered in greening a company's logistics activities are also recognized in most cases. It is concluded that companies can overcome this challenge by adopting new concepts of green supply chain management. The notes highlight the observed distance between arguments in the international literature and the reality of Brazilian companies on the greening of manufacturing aspects.

Análise do apoio dos sistemas de informação para as práticas de gestão ambiental em empresas com ISO 14001 - estudo de múltiplos casos

The purpose of this article is to identify the contributions of Information Systems (IS) for environmental management practices, as well as the opportunities and challenges in this relation. Thus, we performed two case studies with Brazilian enterprises certified ISO 14001, by conducting interviews, document analysis and direct observation. As results, we present the identification of the main contributions of information systems for environmental management practices in the studied cases, the verification that a more advanced stage regarding IS is a factor that implies a more effective contribution, besides finding challenges and opportunities in this relation. The main contribution of this research consists of the presentation of a framework that identifies the support of information systems for environmental practices.