Clonal Selection
Mostrando 25-36 de 227 artigos, teses e dissertações.
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25. SELEÇÃO DE CLONES DE BATATA DE CURTA DORMÊNCIA, ALTA QUALIDADE DE PROCESSAMENTO E ADAPTADOS AOS CULTIVOS DE PRIMAVERA E OUTONO / SELECTION OF POTATO CLONES WITH SHORT DORMANCY, HIGH PROCESSING QUALITY AND ADAPTED TO SPRING AND AUTUMN GROWN SEASONS
Selection of potato clones might be done during spring and autumn grown seasons of Rio Grande do Sul (RS). These grown seasons have contrasting conditions of temperature, photoperiod and solar irradiation, which may affect tuber dormancy and chip processing quality. The objectives of this work were to identify potato clones with short dormancy, high chip qua
Publicado em: 2008
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26. Epidemiological characterization of resistance and PCR typing of Shigella flexneri and Shigella sonnei strains isolated from bacillary dysentery cases in Southeast Brazil
Shigella spp are Gram-negative, anaerobic facultative, non-motile, and non-sporulated bacilli of the Enterobacteriaceae family responsible for "Shigellosis" or bacillary dysentery, an important cause of worldwide morbidity and mortality. However, despite this, there are very few epidemiological studies about this bacterium in Brazil. We studied the antibioti
Brazilian Journal of Medical and Biological Research. Publicado em: 09/01/2007
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27. Viability of potatoÂs family selection in the early generations / Viabilidade da seleÃÃo de famÃlias de batata em geraÃÃes precoces
Potato selection is practiced according to the advancement of generations In the early generations a number of limitations hamper the genetic gains such as high number of clones use of visual selection and limited numbers of tubers from each genotype Thus research has been directed toward family selection which focus first in the selection of the best famili
Publicado em: 2007
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28. Recurrent selection in potato for heat tolerance. / SeleÃÃo recorrente em batata visando a tolerÃncia ao calor
All potato cultivars most planted in Brazil come from temperate countries. They are not adapted to the tropical conditions and this results in poorer tuber yields. The objective of this research was to study how recurrent selection can contribute to the development of more adapted potato clones to the tropical climate. The base population (SR0) used in this
Publicado em: 2007
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29. Investigation of a framework based on artificial immune system applied to the pattern recognition / InvestigaÃÃo de uma arquitetura baseada em sistemas imunolÃgicos artificiais aplicada ao reconhecimento de dÃgitos manuscritos
The discovery of new functionalities through the study of human physiology has contributed toward the evolution of Artificial Immune Systems. The present work investigates a new architecture through observations of natural immunological behavior. New functionalities observed in the biological environment were studied for the modeling of this immunological ap
Publicado em: 2007
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30. DESENVOLVIMENTO DE CLONES DE BATATA DE ALTA QUALIDADE DE TUBÉRCULO A PARTIR DE GENITORES RESISTENTES A REQUEIMA / DEVELOPMENT OF POTATO CLONES WITH HIGHT TUBER QUALITY FROM LATE BLIGHT RESISTENT PROGENITORS
Potato (Solanum tuberosum L.) is the most important horticultural crop of the world. Late blight (Phytophthora infestans (Mont.) de Bary) is the most important and devastating disease. There is no cultivar with sufficient level of resistance in Brazil being most part of production costs used for its control. Besides late blight resistance, new cultivars shou
Publicado em: 2007
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31. EstimaÃÃo de ParÃmetros GenÃticos, FenotÃpicos e Ambientais para a Qualidade da Madeira de Eucalyptus em Ãrvores Vivas. / Estimation Of Genetic, Phenotypic And Environmental Parameters For Eucalyptus Wood Quality In Living Trees.
The evaluation of the technological characteristics of wood, in most times, is accomplished through destructive methods. But, that process make it impossible the evaluation of a large number of genetic materials. So, the utilization of non-destructive methods makes it possible to evaluate a large amount of trees, allowing a more intensive selection of trees
Publicado em: 2007
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32. Otimização do cultivo in vitro visando a transformação genética das cultivares brasileiras de alho (Allium sativum L.) / Optimization of in vitro culture aiming at genetic transformation of Brazilian garlic (Allium sativum L.) cultivars
Garlic (Allium sativum L.) breeding has been limited to clonal selection of mutant genotypes, since almost all the species germplasm is sterile, not flowering under standard culture conditions. Garlic sterility affects not only breeding but also directly influences production costs. Further, the requirement of vegetative propagation using small bulbs as prop
Publicado em: 2007
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33. Critérios na escolha de genitores e mecanismos de seleção para caracteres agronômicos nas primeiras gerações em batata (Solanum tuberosum L.) / Critérios na escolha de genitores e mecanismos de seleção para caracteres agronômicos nas primeiras gerações em batata (Solanum tuberosum L.).
The choice of parents and selection strategies when carefully defined and incorporated as usual practice in potato breeding programs, increase their efficiency and versatility. This research was composed of four studies. The work had as the main objective to analyze the use of distance measurements among potato genotypes through genealogy, morphologic and mo
Publicado em: 2006
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34. SeleÃÃo assistida por marcadores para a qualidade de processamento em batata / Marker Assisted Selection for tuber processing traits in potato
A seleÃÃo precoce de clones que possuam nÃveis elevados de matÃria seca e baixos teores de aÃÃcares redutores à uma necessidade nos programas de melhoramento para a qualidade de processamento da batata (Solanum tuberosum L.). Com a utilizaÃÃo de marcadores genÃticos a seleÃÃo precoce tornou-se possÃvel, visto que eles permitem a identificaÃÃo
Publicado em: 2006
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35. Analysis of sequences of minicircles of kDNA gotten of clinical samples (active and healed injuries) of patients with American cutaneous leishmaniasis in Pernambuco, Brazil / Análise de seqüências de minicírculos do kDNA obtidos de amostras clínicas (lesões ativas e cicatrizadas) de pacientes com leishmaniose tegumentar americana em Pernambuco, Brasil
Some species of the genus Leishmania sp. are causative agents of the leishmaniasis, that are important public health problems. American cutaneous leishmaniasis (ACL), caused by Leishmania (Viannia) braziliensis presents cutaneous lesions that heal spontaneously or after specific treatment. In the present study, in vitro and in silico approaches were performe
Publicado em: 2006
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36. InteraÃÃo famÃlias por ambientes e seleÃÃo de clones de batata resistentes à pinta preta e tolerantes ao calor. / Families x environments interaction and selection of potato clones to early blight resistance and heat tolerance.
Potato breeding programs for tropical conditions require some specific aspects which should be considered to lead to successful results. Included among these aspects are the selection of clones adapted to heat stress and with reasonable level of resistance to early blight. Early blight is a common disease in the tropics and is caused by Alternaria solani. An
Publicado em: 2005