Interaction Genotypes X Environments
Mostrando 25-34 de 34 artigos, teses e dissertações.
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25. Uso dos mÃtodos AMMI e GGE biplot para anÃlises de adaptabilidade e estabilidade de hÃbridos de milho e estratificaÃÃo ambiental / The use of AMMI and GGE biplot methods for analysis of adaptability and stability of maize hybrids and environmental stratification
This work was carried out for evaluating stability, adaptability and environmental stratification, through the AMMI and GGE biplot methods by using maize hybrids trials data evaluation and for comparing the efficiency of these methods. Grain yield data originating from final trials of maize hybrids evaluation supplied by the Monsanto company were used and th
Publicado em: 2009
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26. EstratÃgias para obtenÃÃo de linhagens com resistÃncia durÃvel à ferrugem asiÃtica da soja. / Strategies to breed soybean varieties with durable resistance to Asian rust
A ferrugem-asiÃtica da soja, causada pelo fungo Phakopsora pachyrhizi Sydow &P. Syd., à considerada altamente agressiva e foi relatada, pela primeira vez no Brasil, em 2001. As plantas de soja sÃo suscetÃveis ao fungo em todos os estÃdios de crescimento e as perdas podem ser de atà 100%. As pesquisas tÃm se concentrado na obtenÃÃo de cultivares resi
Publicado em: 2009
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27. Statistical test for contribution in the interaction matrix of genotypes and environments / Teste estatístico para contribuição de genótipos e ambientes na matriz de interação GE
The objective of the present work was to propose a method for testing the con- tribution of each element in a genotypes X environments interaction using multi-environment analyses by means of an F test and implementation of a computational routine to analyze the data according to the test proposed. The study evaluated four data sets, each with a di®erent nu
Publicado em: 2008
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28. Variabilidade fenotípica dos teores de óleo e proteína de cultivares de soja em diferentes ambientes / Phenotypic variability in the oil and protein contents of cultivars of soybean in different environments
The present work was developed with soybeans genotypes grown in different planting times and different soil types in the agricultural years of 2004/05, 2005/06 and 2006/07 in the municipalities of Viçosa-MG, Frutal-MG and Pindorama-SP respectively. In this work, it was aimed to evaluate the effect of advancing and delaying the harvest on germination and the
Publicado em: 2008
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29. Adaptability and stability of 20 soybean genotypes for the macro-region 3 / Adaptabilidade e estabilidade de 20 genótipos de soja para a macroregião sojícola 3
This study evaluated the adaptability and stability of 20 soybean genotypes, where 10 of them were lines of the breeding program of Monsoy Ltd. and the other 10 were commercially used controls. The experiments were done in the agricultural years 2005/2006 and 2006/2007, in the soybean macro-region 3 (micro-regions 301, 302 and 303). The experimental design w
Publicado em: 2008
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30. Avaliação de genótipos de arroz de terras altas na Zona da Mata de Pernambuco.
Rice (Oryza sativa L.) is one of the most cultivated and consumed crop in all continents. In Brazil, it is one of the basic sources of food, but the Brazilian productivity average is considerad low. That is due to inappropriate cultivation practices in some regions and mainly because there is not a sufficient number of evaluated and recommended cultivars for
Publicado em: 2007
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31. 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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32. 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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33. 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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34. 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