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| Schmit,Rodolfo; Melo,Rita Carolina de; Pereira,Thayse Cristine Vieira; Beck,Mattheus; Guidolin,Altamir Frederico; Coimbra,Jefferson Luís Meirelles. |
| ABSTRACT: The objective of this study was to apply multivariate techniques, canonical discriminant analysis, and multivariate contrasts, indicating the most favorable inferences in the evaluation of pure lines of beans. The study was conducted at the experimental field of the Institute for Breeding and Molecular Genetics, in Lages, SC, Brazil. The experiment was composed of 24 pure lines of beans from the Santa Catarina test of cultivars. Plant height, numbers of pods and grains per plant, and stem diameter were the variables measured. The complete randomized block design was used with four replications. The data were subjected to multivariate analysis of variance, canonical discriminant analysis, multivariate contrasts and univariate contrasts. The first... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris L; Multivariate analysis of variance; Multivariate contrasts; Canonical discriminant analysis. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000901535 |
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| Cerutti,Paulo Henrique; Grigolo,Sibila; Melo,Rita Carolina de; Fioreze,Ana Carolina da Costa Lara; Guidolin,Altamir Frederico; Coimbra,Jefferson Luís Meirelles. |
| ABSTRACT When different gene groups are combined by hybridization, the expression of predominant genes for a trait must be known. This understanding is fundamental to the decisions made by breeders in the stages of cultivation and selection of segregating populations during the breeding program. Thus, the objective of this study was to determine the effects of combining ability and gene action for the root distribution traits of the Andean and Mesoamerican common bean gene groups. Six common bean parents from the Andean and Mesoamerican groups were hybridized in a complete diallel mating scheme, resulting in 30 F1 hybrids. The parents and hybrids were planted in the field in a simple lattice design. The target trait was root distribution, calculated as the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gene action; Andean and mesoamerican gene pool; Diallel analysis.. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100226 |
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| Schmit,Rodolfo; Trevisani,Nicole; Melo,Rita Carolina de; Veiga,Alessandra; Beck,Mattheus; Coimbra,Jefferson Luís Meirelles; Guidolin,Altamir Frederico. |
| O objetivo deste trabalho foi evidenciar a contribuição da análise da heterogeneidade das linhas de regressão para a recomendação de novas cultivares, pela metodologia de Eberhart & Russell. Um experimento com dez genótipos de arroz, avaliados em oito ambientes, foi utilizado para ilustração da metodologia. Utilizou-se o delineamento de blocos ao acaso com três repetições. A soma dos quadrados da interação genótipo x ambiente (GxA) foi decomposta para avaliação da heterogeneidade das linhas de regressão e dos desvios acumulados da linearidade. A heterogeneidade das linhas de regressão foi analisada com o uso do teste t sobre os coeficientes de regressão linear dos genótipos. Os dois componentes ortogonais da interação GxA foram significativos. A... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adaptabilidade e estabilidade fenotípica Eberhart & Russell interação genótipo x ambiente produtividade de grãos. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000600475 |
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| Melo,Rita Carolina de; Trevisani,Nicole; Pereira,Thayse Cristine Vieira; Guidolin,Altamir Frederico; Coimbra,Jefferson Luís Meirelles. |
| ABSTRACT Heterozygosity is an extremely important resource in early breeding programs using autogamous plants because it is usually associated with the presence of genetic variability. Induced mutation and artificial hybridization can increase distinctly the proportion of loci in heterozygosis. This study aimed to compare segregating and mutant populations and relate the mechanisms used to generate variability with their respective heterozygosity levels tested. The treatments mutant populations (M2, M3, M4, M5, M6 and M7), segregating populations (F4, F5 and F6) and lines (BRS Pérola and IPR Uirapuru) were evaluated by multivariate analysis and compared by orthogonal contrasts. The canonical discriminant analysis revealed which response variables... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Multivariate analysis; Orthogonal contrasts; Multiple allelism; Selection intensity. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000300480 |
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| Trevisani,Nicole; Melo,Rita Carolina de; Bernardy,João Pedro Fossa; Pierre,Patrícia Maria Oliveira; Coimbra,Jefferson Luís Meirelles; Guidolin,Altamir Frederico. |
| Abstract The restricted genetic base in physalis in Southern Brazil is a challenge that requires genetic breeding for the achievement of fruits with superior agronomic quality. Therefore, genetic changes were induced in physalis for the selection of populations with superior fruit quality. To that end, seven populations of physalis were submitted to gamma irradiation (0,100 and 200 Grays – Gy), which provided 21 populations. Significant population difference was observed, which indicates the existence of variability between at least two populations of physalis. The contrasts showed difference for Colômbia01, Colômbia02, Caçador and CAV. The mutation induction was effective at causing genetic variations in these populations. For Colombia01 (100 Gy), it was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Small fruit; Gamma radiation; Cobalt60; Selection. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000300801 |
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| Velho,Luis Paulo Saraiva; Gemeli,Murielli Sabrina; Trevisani,Nicole; Pereira,Thayse Cristine Vieira; Cerutti,Paulo Henrique; Melo,Rita Carolina de; Guidolin,Altamir Frederico; Coimbra,Jefferson Luís Meirelles; Corrêa,Sabrina Cristina. |
| Abstract: The objective of this work was to estimate the phenotypic correlation and the direct and indirect effects of the aerial part components of common bean (Phaseolus vulgaris) that are associated with root distribution, in order to facilitate the indirect selection for this character. Sixteen genotypes were used, from which 12 are segregating populations in the F6 generation and four are fixed populations, which were conducted in field conditions in a randomized complete block design, with two replicates. The root system evaluation was performed according to Böhm’s method. Pearson’s phenotypic correlation was estimated by the path analysis. The characters stem diameter, leaf area index, first pod set, and root angle showed the highest positive... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Abiotic stress; Indirect selection; Path analysis.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000500328 |
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| Melo,Rita Carolina de; Toigo,Marcelo de Carli; Lannes,Sergio Dias; Trevisani,Nicole; Pereira,Thayse Cristine Vieira; Grigolo,Sibila; Guidolin,Altamir Frederico; Coimbra,Jefferson Luís Meirelles. |
| ABSTRACT: The objective of this study was to analize the inheritance of characters in wheat using multivariate analysis of variance. Sixteen genetic constitutions were evaluated between commercial cultivars and progenies F1 and F2. Treatments were arranged in completely randomized blocks, with three replicates. Five characters were evaluated. Multivariate analysis of variance and multivariate contrasts were then performed to test the hypotheses. The significant differences, obtained for comparison between parents and progenies F1, may be evidence of heterosis occurrence. However, only comparisons between progenies P1_P3 (F1) vs. P1_P3 (F2) and P4_P2 (F1) vs. P4_P2 (F2) showed significant differences. Multivariate analysis of variance revealed that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Multivariate contrasts; Additivity; Inbreeding. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700201 |
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| Pereira,Thayse Cristine Vieira; Schmit,Rodolfo; Haveroth,Eduardo José; Melo,Rita Carolina de; Coimbra,Jefferson Luís Meirelles; Guidolin,Altamir Frederico; Backes,Rogério Luiz. |
| RESUMO: O objetivo foi avaliar os componentes da variância fenotípica e estimar a influência da interação genótipo*ambiente no rendimento de grãos em feijão. Os componentes da variância fenotípica foram estimados pelo método da máxima verossimilhança restrita e do melhor preditor linear não viesado (REML/BLUP), juntamente com o espaço de inferência específico. As avaliações foram realizadas nas safras agrícolas de 2006/07 a 2011/12 no município de Lages/SC. Durante o período, 104 genótipos foram avaliados. Os dados são desbalanceados, sendo que 13 genótipos permaneceram nos ensaios em todos os anos. Observando os resultados, foi possível visualizar que a grande variação (59,0%) no comportamento dos genótipos ao longo dos anos é atribuída principalmente à... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Efeito do ambiente; Melhoramento vegetal; Modelos lineares mistos; Phaseolus vulgaris L.; REML/BLUP. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000300411 |
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