Livia Maria Chamma Davide
Universidade Federal da Grande Dourados
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Publication
Featured researches published by Livia Maria Chamma Davide.
Ciencia E Agrotecnologia | 2013
Evellyn Giselly de Oliveira Couto; Livia Maria Chamma Davide; Fernanda de Oliveira Bustamante; Renzo Garcia Von Pinho; Tallyta Nayara Silva
The development of homozygous breeding lines in maize may be accelerated through the use of haploids. Thus, the obtaining and prior identification of haploids generated by the haploid inducer lines is an important factor. The purpose of this study was to identify haploids by flow cytometry and to correlate the nuclear DNA content to the morphological and morphometric traits of the seeds that gave rise to them. In addition, molecular markers were used to confirm the androgenetic nature of the haploid. The seeds obtained were derived from the cross between the inbred line W23 and the commercial hybrid P30F90. Among these seeds, a group was selected, putative haploids, whose embryo was white and the pericarp purplish. This group, consisting of 330 seeds, was characterized based on seed morphology, seed morphometry and nuclear DNA content. Flow cytometry analyses identified four haploids, and all of them were small size plants and had brittle leaves. The weight, length, thickness and width of the haploid seeds were very variable indicating that morphometric traits do not constitute reliable data for visual selection of haploid seeds. Based on results, the inbred line W23 induced haploid maize even under tropical conditions. Microsatellite molecular markers (SSR) proved to be efficient, confirming the androgenetic trait of the haploids.
Crop Breeding and Applied Biotechnology | 2012
André Humberto de Brito; Livia Maria Chamma Davide; Renzo Garcia Von Pinho; Rafael Pelloso de Carvalho; Matheus Costa dos Reis
The main goal of this study was to assess the nature and magnitude of gene effects for resistance to Cercospora leaf spot. A randomized block design with three replications was used. The data were obtained at the plant level by assessing the disease severity. The data were analyzed per experiment, using the average data per plot. A dominant-additive genetic model without epistasis was considered, with estimation of the components of means and variance. The genetic control of resistance to gray leaf spot is polygenic with predominance of the additive effects. Dominance was observed in a few small-effect loci and high heritability values.
Revista Brasileira de Milho e Sorgo | 2011
Rafael Pelloso de Carvalho; Renzo Garcia Von Pinho; Livia Maria Chamma Davide
Revista Brasileira de Milho e Sorgo | 2010
Livia Maria Chamma Davide; Roselaine Cristina Pereira; Guilherme Barbosa Abreu; João Cândido de Souza; Édila Vilela De Rezende Von Pinho
Revista Brasileira de Milho e Sorgo | 2009
Livia Maria Chamma Davide; Rui Pereira; Guilherme Barbosa Abreu; J. C. de Souza; É. V. de R. von Pinho
Semina-ciencias Agrarias | 2012
Rafael Pelloso de Carvalho; Renzo Garcia Von Pinho; Livia Maria Chamma Davide
Revista Brasileira de Milho e Sorgo | 2011
Patrícia Maria Oliveira Pierre; Livia Maria Chamma Davide; Evellyn Giselly de Oliveira Couto; Tallyta Nayara Silva; Magno Antonio Patto Ramalho; João Bosco dos Santos
Ciencia Rural | 2017
Emanoel Sanches Martins; Livia Maria Chamma Davide; Gian José Miranda; Jefferson de Oliveira Barizon; Francisco de Assis Souza Junior; Rafael Pelloso de Carvalho; Manoel Carlos Gonçalves
Revista Ceres | 2016
Wesley de Souza Prado; William Leonello Estevão; Arthur Kenji Mendes Maeda; André Carlesso; Manoel Carlos Gonçalves; Livia Maria Chamma Davide
Comunicata Scientiae | 2016
Adriano dos Santos; G. Ceccon; Livia Maria Chamma Davide; Antonio Luiz Neto Neto; Juslei Figueiredo da Silva; Rita de Cássia Félix Alvares