Vegetal Crossing
Mostrando 1-12 de 32 artigos, teses e dissertações.
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1. Index to select the best segregating populations of common bean.
This work was carried out to verify if a selection index with equal weight for standardized variables is useful to assessing the genetic values of parents in a diallel crossing.
Annual Report of the Bean Improvement Cooperative. Publicado em: 2011
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2. Mating system parameters in Stylosanthes guianensis (Aubl.) Sw. based on RAPD markers
This study investigated the mating systems in Stylosanthes guianensis, an important tropical forage legume. Twelve progenies were analyzed with 21 polymorphic random amplified polymorphic DNA (RAPD) loci. The mating parameters estimated using the mixed mating model showed that this population practices a mixture of selfing (61.4%) and out-crossing (38.6%) fo
African Journal of Biotechnology. Publicado em: 2011
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3. Trigo BRS 264: cultivar precoce com alto rendimento de grãos indicada para o cerrado do Brasil Central.
ABSTRACT: Embrapa, through Embrapa Savanas and Embrapa Wheat have developed a new wheat cultivar, denoted BRS 264 (Triticum aestivum L), for the savana region of Central Brazil. The new cultivar is originated from the crossing Buckbuck/Chiroca/Tui. The selection from the F2 population was performed at Embrapa Savanas, at Planaltina, DF. It is indicated for i
Planaltina. Publicado em: 2011
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4. Proposta para ampliação da base genética por meio de cruzamento interespecífico no pré-melhoramento do tomateiro / Proposal for amplification the genetic base for interespecific cross in tomato pre-breeding.
The aim of this study was to evaluate: 1 - the variability among families resistant PepYMV from the crossing between S.lycopersicum and S.habrochaites; 2 - the contribution of variability in this cross for the breeding of tomato. The diversity assessment was performed with a square lattice design experiment with two replications and three plants per plot. Th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/03/2010
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5. Genetic parameters and agronomic potential of adapted x exotic soybean crosses, with emphasis on the reaction to Asian soybean rust / Parâmetros genéticos e potencial agronômico de cruzamentos tipo adaptado x exótico em soja, com ênfase na reação à ferrugem asiática
Neste trabalho teve-se por objetivo estimar parâmetros genéticos e avaliar o potencial agronômico em gerações F2 e F3:2 de cruzamentos do tipo adaptado x exótico em soja, quanto ao potencial de gerar descendentes agronomicamente superiores e com resistência à ferrugem asiática. Ademais, procurou-se estudar a resistência a doenças de final de ciclo
Publicado em: 2009
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6. Parental selection for crossings based on molecular genetic distances and perspectives for soybean breeding / Seleção de genitores para cruzamentos com base em distâncias genéticas moleculares e perspectivas para o melhoramento de soja
A seleção de genitores para cruzamentos constitui-se em uma das etapas mais importantes em programas de melhoramento genético, pois com isso evita-se o desenvolvimento de populações pouco promissoras. Com o advento dos marcadores moleculares surgiu a possibilidade de predizer o desempenho das populações com base nas distâncias genéticas entre os gen
Publicado em: 2009
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7. Vegetation mapping of Serra do Cipo National Park (MG, Brasil) and its relation with morphometrical variables. / Classificação da vegetação do Parque Nacional da Serra do Cipó (MG) e sua relação com variáveis morfométricas
The following work maps the vegetation cover of Serra do Cipó National Park, Minas Gerais, Brazil, and correlates the flora distribution to the occurrence of the local morphometric variables: altitude, slope and face orientation, vertical and horizontal curvatures. Its objective is to provide some environment conditional information to the Park and to devel
Publicado em: 2009
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8. Oito ciclos de seleÃÃo recorrente visando à resistÃncia à mancha-angular no feijoeiro / Eight cycles of recurrent selection aimed at resistance to angular leaf spot in common bean
This work was carried out with the objective of evaluating both the genetic progress after eight cycles of phenotypical recurrent selection for resistance to angular leaf spot in bean plants and the indirect responses for both productivity and grain types. The base population was obtained from partial diallelic crossing of seven carioca-type grain lines (Car
Publicado em: 2009
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9. Estudo da herança dos caracteres stay-green, produção e seus componentes em milho utilizando o delineamento III e mapeamento de QTL / Inheritance study of stay-green, yield and its components in maize using the design III and QTL mapping
Maize is one of the most important agricultural activities in Brazil. The country is the third largest world producer and the yield rose from 1800 kg ha-1 to 3000 kg ha-1 in the last 15 years. The grain yield and drought tolerance are complex traits, difficult to select. A possibility to increase the efficiency of breeding programs that aims to improve the g
Publicado em: 2009
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10. Avaliação do sêmen ovino diluído e congelado em meio à base de água de coco em pó (ACP-102c) ou Tris. / Evaluation of sheep semen diluted and frozen in the middle of the base of coconut milk powder (ACP-102C) or Tris.
The cryopreservated semen at artificial insemination programs is a value tool for genetic and ovine breed conservation programs. To facilitate the disponibility of seminal extenders and reduce the costs, it was developed a vegetal extender based on powder coconut water (PCW- 102), that shown satisfactory results in chilled ram semen. However, there is a lack
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/12/2008
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11. Estimation of genetic parameters among families of clones intra and interspecific elephantgrass hybrids in two forms of genetic evaluation. / Parâmetros genéticos entre híbridos de capim-elefante sob duas formas de avaliação.
The objective of this study was to compare two forms of assessment based on data per se and in the form of genetically stratified selection from genetic parameters in cross intra and inter-specific elephantgrass. The study was conducted in the Itambé Experimental Station, of the Pernambuco Agronomic Institute IPA. For definition of estimated genetic paramet
Publicado em: 2008
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12. Mapping of Puccinia psidii resistance locus in Eucalyptus sp. by molecular microsatelite markers / Mapeamento de loco de resistência à Puccinia psidii em Eucalyptus sp. por meio de marcadores moleculares microssatélites
The occurrence of the rust caused by Puccinia Psidii can represent a limiting factor for the eucalypt plantations. Planting of resistant genotypes is the most advisable control measure against the disease. This way, the study and the detection of genes that are responsible for the rust resistance, aiming the selection of resistant genotypes, became desirable
Publicado em: 2008