Marlúcia Souza Pádua
Universidade Federal de Lavras
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Featured researches published by Marlúcia Souza Pádua.
Ciencia Rural | 2014
Marlúcia Souza Pádua; Luciano Vilela Paiva; Luciano Coutinho Silva; Kalynka Gabriella do Livramento; Eduardo Alves; Ana Hortência Fonsêca Castro
O objetivo deste trabalho foi caracterizar e comparar dois tipos de calos de explantes foliares de Coffea arabica (cultivar Catigua). Celulas de diferentes tipos de calos foram caracterizadas quanto a viabilidade e caracteristicas morfologicas externas e internas. Foram obtidos dois tipos de calos morfologicamente distintos: (a) amarelo friavel e (b) transparente aquoso. Os calos amarelos friaveis apresentaram maior viabilidade celular e caracteristicas embriogenicas. Microscopia eletronica de varredura e transmissao mostraram caracteristicas embriogenicas em calos amarelos friaveis evidenciadas pela presenca de celulas pequenas e isodiametricas. Os calos transparentes aquosos apresentaram celulas alongadas e vacuolizadas.
Anais Da Academia Brasileira De Ciencias | 2013
Marlúcia Souza Pádua; Luciano Vilela Paiva; Cláudia Regina Gontijo Labory; Eduardo Alves; Vanessa Cristina Stein
Oil palm is one of the most economically valuable oil seed plants, but the expansion of plantations has been limited by availability of seedlings, as the conventional propagation is through seeds, which have low germination rates. One possible solution for the large-scale production is the use of somatic embryogenesis. The aim of this study was evaluate the effects auxins 2,4-D and picloram on the induction of pro-embryogenic masses in E.guineenesis hybrid leaf explants and characterize, regarding embryogenic characteristics, with cytochemical and ultrastructural analysis. Specifically, in vitro plantlets leaves fragments were inoculated in Y3 culture medium supplemented by 2.4-D or picloram at different concentrations (0.0, 1.0, 3.0, 6.0 and 9.0 mg l⁻¹). After 90 days the presence/ absence of cell masses were evaluated. Both growth regulators efficiently induced cellular masses regardless of the concentrations applied. As the cell masses were not homogeneously formed, they were classified according to color and shape into four types: TYPE 1--elongated and translucent, TYPE 2--uneven and translucent, TYPE 3--globular and beige, TYPE 4--globular and white. Based on the anatomical and ultrastructural features, TYPE 2, 3 and 4 cell masses were considered to have the highest embryogenic potential and therefore may be most suited to large-scale vegetative propagation of oil palm.
Revista Arvore | 2014
Marlúcia Souza Pádua; Luciano Viela Paiva; Luis Gustavo Texeira da Silva; Luciano Coutinho Silva; Vanessa Cristina Stein
Fruits and almond from the dendezeiro, oil palmbelonging to the Elaeis genus,are widely used for the production of cookingoils or for the pharmaceutical and cosmetic industries.In the last decade, this oil palm also emerged as a promising source for commercialbiofuel production. This study evaluated the effect of different culture media, MS (MURASHIGUE AND SKOOG) and Y3 (EEUWENS)and carbohydrates duringin vitro germination of zygotic embryos, the effect of growth regulators GA3, NAA and BA Ponin vitro seedling development, and the survival rate of acclimatized seedlingsof Manicore hybrid (Elaeis oleifera x E. guineensis). Zygotic embryos were inoculated on MS and modified Y3 media, supplemented with different sucrose concentrations (30, 45, and 60 gL-1) or sorbitol (36 gL-1), and the germination rate was evaluated after 30 days. Subsequently, seedlings were transferred to modified Y3 culture medium supplemented with differentGA3 concentrations (3.5 and 7 mgL-1) or without it, combined or not with 1 mgL-1 of NAA, 5 mgL-1 of BAP.The highest germinationpercentage of germinated embryos (92%) was observed in MS medium supplemented with 36 gL-1 sorbitol. Culture media supplemented with growth regulatorsGA3, NAA and BAP promoted greater shoot lengththan control media. Rooted seedlings showed high survival percentage (85%) during acclimatization.
Acta Scientiarum-agronomy | 2012
Luciene de Oliveira Ribeiro; Luciano Vilela Paiva; Marlúcia Souza Pádua; Breno Régis Santos; Eduardo Alves; Vanessa Cristina Stein
African Journal of Biotechnology | 2014
Marlúcia Souza Pádua; Luciano Vilela Paiva; Marinês Ferreira Pires; L. G. T. da Silva; Em de Castro; Vanessa Cristina Stein
Revista Arvore | 2018
Marlúcia Souza Pádua; Raíssa Silveira Santos; Luciano Vilela Paiva; Vanessa Cristina Stein; Luciano Coutinho Silva
Protoplasma | 2018
Marlúcia Souza Pádua; R. S. Santos; Cláudia Regina Gontijo Labory; Vanessa Cristina Stein; E. G. Mendonça; Eduardo Alves; Luciano Vilela Paiva
Journal of Experimental Agriculture International | 2018
Luana Ferreira Torres; Marlúcia Souza Pádua; Kalynka Gabriella do Livramento; Leandro Eugenio Cardamone Diniz; Luciano Vilela Paiva
Tropical Plant Biology | 2015
Raquel Bezerra Chiavegatto; Ana Hortência Fonsêca Castro; Mayra Gonçalves Marçal; Marlúcia Souza Pádua; Eduardo Alves; Vânia Helena Techio
Revista de Ciências Agrárias | 2015
Marlúcia Souza Pádua; Carolina Delfim Lima; Luciano Vilela Paiva; Douglas Barduche; Breno Régis Santos; Vanessa Cristina Stein