Genotypes By Environments Interaction
Mostrando 25-36 de 36 artigos, teses e dissertações.
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25. Interação genótipos-ambientes e parâmetros de adaptabilidade e estabilidade para características de crescimento em bovinos de corte compostos no Brasil / Genotype-environmental interactions and adaptability and stability parameters for growth traits in composite beef cattle in Brazil.
Data from 111,101 weaning weight adjusted to 205 days (WW), 50,860 yearling weight adjusted to 390 days (YW) and 47,462 weight gain from weaning to yearling (WG) were analyzed to evaluated the genotype-environmental interactions and estimates adaptability parameters for seven genotype combinations of crossbreed beef cattle, raised in three environment of the
Publicado em: 2007
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26. Agressividade de isolados de Cercospora zeae-maydis em genótipos de milho / Aggressiveness of Cercospora zeae-maydis isolates in maize genotypes
Maize (Zea maydis L.) is of great social, cultural and economical importance in Brazil and in the world. Maize diseases are the main factors that reduce crop yield. Gray leaf spot, caused by the fungus Cercospora zeae-maydis Tehon &Daniels, is one of the most important diseases in many countries. Given that the disease can be controlled by the use of resista
Publicado em: 2006
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27. Study of genotypes x environments in some productive traits in Nellore cattle / Estudo da interação genótipos x ambientes em algumas características produtivas na raça Nelore
The objective of the present study was to evaluate the genotype x environment interaction effect on weaning weight, post-weaning weight and weight gain post-weaning in Nellore beef cattle herds. There were analyzed 45,697 data of weaning weight adjusted to 205 days (PD), 34,773 data of post-weaning weight adjusted to 550 days (PS) and 34,753 data of weight g
Publicado em: 2006
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28. Environmental stratification for evaluation cotton genotypes in Mato Grosso State, Brazil. / Estratificação ambiental para avaliação de genótipos de algodoeiro no estado de Mato Grosso.
Data of yield were obtained from Regional Yield Trials of cotton (Gossypium hirsutum) genotypes carried out in Mato Grosso State, Brazil in 1998/99, 1999/00 and 2000/01, was used in this study on environmental stratification and evaluation of the minimum number of environments required for cotton genotypes assessments. Eight genotypes were evaluated in 1998/
Publicado em: 2005
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29. Mapeamento de QTLs para reação à doença mancha de Phaeosphaeria em milho. / Mapping QTLs for reaction to Phaeosphaeria leaf spot disease in maize.
Phaeosphaeria leaf spot disease in maize (Zea mays L.) has becoming a concern in Brazil in the last years because of its increase spreading in maize growing areas. Inheritance studies of the reaction of maize genotypes to this foliar disease are necessary to support plant breeding programs. Thus, the objective of this research was to map QTLs to study the in
Publicado em: 2005
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30. Regression and uni-multivariate methodologies for reduction of the replication number in experiments of the intermediary phase of a soybean breeding program. / Métodos de regressão e uni-multivariado para a redução do número de repetições em experimentos intermediários de um programa de melhoramento de soja.
The intermediary phase of a soybean breeding program involves the evaluation of a large number of genotypes (about 100 lines) in several environments, becoming this a very expensive step. The utilization of statistical methods that allow a refined analysis of the genotype x environment (GxE) interaction, may generate gains in precision as a compensation to t
Publicado em: 2004
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31. Produtividade agroindustrial de genótipos RB de cana-de-açúcar da série 1993 em 3 regiões de cultivo do estado de Alagoas: estratificação de ambiente e análise de adaptabilidade e estabilidade / Agroindustrial productivity of sugarcane RB genotypes 1993 series cultivated in three regions of the state of Alagoas: environment stratification and adaptability and stability analyses
The aim of this work was to analyse sugarcane RB (Republic of Brazil) clones as part of the series 93 of PMGCA-CECA/UFAL, to identify the best clones and evaluate the representativity of the areas where the essays were performed and so to subsidiary the recommendations of clones of the referred series which are in releasing process for commercial cultivation
Publicado em: 2004
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32. Genotype-environment interaction and phenotypic stability for girth growth and rubber yield of Hevea clones in São Paulo State, Brazil
The best-yielding, best vigour and most stable Hevea clones are identified by growing clones in different environments. However, research on the stability in Hevea brasiliensis (Willd. Adr. ex Juss.) Muell.-Arg. is scarce. The objectives of this work were to assess genotype-environment interaction and determine stable genotypes. Stability analysis were perfo
Genetics and Molecular Biology. Publicado em: 2003-12
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33. Severidade de Phaeosphaeria maydis e rendimento de grãos de milho (Zea mays L.) em diferentes ambientes e doses de nitrogênio. / Severity of phaeosphaeria maydis and grain yield of maize (Zea mays L.) in several environments and nitrogen doses.
Maize (Zea mays L.) crop management is incorporating the ultimate technological advances in Agriculture, resulting in higher yield. Procedures to reduce diseases severity, as those caused by Phaeosphaeria maydis, are becoming more important. The fungus is a biotic agent that reduces productivity due to plant stress. This is related to disease severity and cl
Publicado em: 2002
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34. Contribution of individual random mutations to genotype-by-environment interactions in Escherichia coli
Numerous studies have shown genotype-by-environment (G×E) interactions for traits related to organismal fitness. However, the genetic architecture of the interaction is usually unknown because these studies used genotypes that differ from one another by many unknown mutations. These mutations were also present as standing variation in populations and h
The National Academy of Sciences.
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35. among-Environment Heteroscedasticity and Genetic Autocorrelation: Implications for the Study of Phenotypic Plasticity
The impact of among-environment heteroscedasticity and genetic autocorrelation on the analysis of phenotypic plasticity is examined. Among-environment heteroscedasticity occurs when genotypic variances differ among environments. Genetic autocorrelation arises whenever the responses of a genotype to different environments are more or less similar than expecte
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36. Identification of Quantitative Trait Loci Influencing Wood Specific Gravity in an Outbred Pedigree of Loblolly Pine
We report the identification of quantitative trait loci (QTL) influencing wood specific gravity (WSG) in an outbred pedigree of loblolly pine (Pinus taeda L.). QTL mapping in an outcrossing species is complicated by the presence of multiple alleles (>2) at QTL and marker loci. Multiple alleles at QTL allow the examination of interaction among alleles at QTL