Plant Genetic Improvement
Mostrando 25-36 de 92 artigos, teses e dissertações.
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25. The use of weighted multiple linear regression to estimate QTL-by-QTL epistatic effects
Knowledge of the nature and magnitude of gene effects, as well as their contribution to the control of metric traits, is important in formulating efficient breeding programs for the improvement of plant genetics. Information concerning a genetic parameter such as the additive-by-additive epistatic effect can be useful in traditional breeding. This report des
Genet. Mol. Biol.. Publicado em: 2012
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26. Epistasia para a produção de grãos e caracteres da planta em milho / Epistasis for yield and plant traits in maize
It is known that epistasis may have important effects in the populations dynamics and in the evolutionary process of the species, and that it is involved in manifestation of important biological phenomena, such as overdominance, inbreeding depression and heterosis. However, epistasis is considered one of the more complex aspects of quantitative genetics sinc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/12/2011
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27. Sistemas alagados construídos para tratamento de águas residuárias do processamento dos frutos do cafeeiro: eficiência e caracterização das comunidades microbianas / Constructed wetlands systems for wastewater treatment in the processing of coffee fruits: eficiency and characterization of microbial communities
This study aimed to evaluate the influence of ryegrass cultivation (Lolium multiflorum Lam) and the artificial aeration of the affluent in the removal of organic matter, nutrients and phenolic compounds present in the ARC, as well as the diversity of microbial communities attached to the medium (gravel) and the rhizosphere of ryegrass, using T-RFLP multiplex
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/11/2011
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28. Desempenho de 79 progênies de soja na geração F6 e correlações fenotípicas, genotípicas e ambientais / Performance of 79 soybean progeny of F6 generation and their phenotypic, genotypic and environmental correlations
Soybean farmers have interest on increasingly early highly productive cultivars has stimulated the development of new genotypes for breeding soy programs. So that, this study aimed to evaluate the agronomic characteristics of 79 progenies of ten biparental crosses Program Soybean Breeding in Federal University of Uberlândia. The experiment was conducted at
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/06/2011
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29. Seleção genômica ampla e novos métodos de melhoramento do milho / Genome wide selection and new methods of maize breeding
The evaluation for nutrient efficiency use (UE) generally use destructive methods of the plant, not allowing, depending on the population genetic structure, using those identified as superior in hybridizations. Consequently, there is a reduction in the potential gains with selection. Additionally, some conventional breeding methods, such as the recurrent sel
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/04/2011
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30. Melhoramento genético do porte do feijoeiro / Genetic improvement of plant architecture in the common bean
Este trabalho foi realizado com os objetivos de obter informações sobre heterose, capacidade geral e específica de combinação, estimar os efeitos gênicos envolvidos no controle genético da arquitetura de planta do feijoeiro e verificar a associação entre caracteres relacionados com a arquitetura de planta. Para isso, 14 linhagens foram cruzadas em e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/01/2011
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31. Heterogeneity of linalool chemotypes of Lippia alba (Mill.) N.E.Br., based on clonal half-sib progenies
Lippia alba (Mill.) N.E.Br. is an aromatic and medicinal shrub native to the American continent. Despite its potential as a source of essential oil for the pharmaceutical and cosmetics industries, few selection and genetic improvement studies have been carried out. The aim of this study was to provide genetic information on this species for breeding programs
Scientia Agricola. Publicado em: 2011-08
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32. Avaliação genética em erva-mate pelo procedimento BLUP individual multivariado sob interação genótipo x ambiente.
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Pesquisa Agropecuária Brasileira. Publicado em: 2011
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33. Combining ability of twelve maize populations.
Genetic progress depends on germplasm quality and breeding methods. Twelve maize populations and their crosses were evaluated to estimate combining ability and potential to be included as source populations in breeding programs. Plant height, point of insertion of the first ear, number of ears per plant, number of grains per ear, root and stalk lodging and g
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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34. Melhoramento vegetal participativo com ênfase na eficiência nutricional.
ABSTRACT: Participatory plant breeding uses a concept that joint formal (official researches institutions) and informal sector (farmers communities), combining the capabilities and the knowledge of both, and farmer's experiences, practices, and preferences. The goal is to join the yield improvement exploring the availabel farmer's agrobiodiversity and introd
Planaltina. Publicado em: 2011
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35. Genetic diversity of upland rice germplasm distributed in Latin America.
Narrow genetic base has been a concern in irrigated rice. Upland rice varieties in Latin America show a similar trend. The parentage of 2,061 upland crosses and 271 advanced lines that CIAT (Centro Internacional de Agricultura Tropical) distributed to partners was traced back to the immediate parents; the yearly percentage participation was estimated. The ma
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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36. Desenvolvimento de cultivares do gênero Brachiaria (trin.) Griseb no Brasil.
In Brazil, cultivated pastures cover more than 100 million hectares and Brachiaria species cover more than 45 million hectares. B. brizantha cv. Marandu and B. decumbens cv. Basilisk are the primary cultivars. The large areas occupied by the same cultivars pose a vulnerability to the beef cattle activity, and make clear how necessary is to increase the genet
Planaltina. Publicado em: 2011