Doutorado em Agronomia

URI Permanente para esta coleção

http://repositorio.ufes.br/handle/10/17349

Nível: Doutorado Acadêmico
Ano de início: 2010
Conceito atual na CAPES: 4
Ato normativo: Doutorado - Reconhecido Port. MEC 609, de 14/03/2019, DOU 18/03/2019, parecer 487/2018).
Periodicidade de seleção: Semestral
Área(s) de concentração: Produção Vegetal
Url do curso: https://producaovegetal.ufes.br/pt-br/pos-graduacao/PPGA/detalhes-do-curso?id=1440

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Navegando Doutorado em Agronomia por Autor "Alexandre, Rodrigo Sobreira"

Agora exibindo 1 - 9 de 9
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    Aspectos fisiológicos e bioquímicos da maturação, embebição e armazenamento de sementes da jabuticaba (Plinia cauliflora)
    (Universidade Federal do Espírito Santo, 2018-11-01) Cabanez, Patricia Alvarez; Alexandre, Rodrigo Sobreira; Lopes, José Carlos; Freitas, Allan Rocha de; Fontes, Milene Miranda Praça; Ferreira, Adésio
    The jabuticabeira originates from the Center-West / South / Southeast of Brazil and belongs to the Myrtaceae family. The main method of propagation of the jabuticabeira is seminiferous, due to the difficulty of adventitious rooting. Sexual propagation can
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    Aspectos fisiológicos e biotecnológicos da propagação do mamoeiro (carica papaya L.)
    (Universidade Federal do Espírito Santo, 2014-12-05) Mengarda, Liana Hilda Golin; Alexandre, Rodrigo Sobreira; Lopes, José Carlos; Souza, Carolina Maria Palácios; Cavatte, Paulo Cezar; Ferreira, Adesio
    This study has the objective of elucidate some physiological and biotechnological aspects of papaya propagation. In order to investigate the water uptake phases during the germination, it was observed that the phase I comprised the period between zero and
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    Biotecnologia genética, fisiológica e histopatológica de sementes e plantas de híbridos de maracujazeiro
    (Universidade Federal do Espírito Santo, 2024-07-19) Nascimento, Gilma Rosa do; Alexandre, Rodrigo Sobreira ; https://orcid.org/0000-0002-5248-6773; http://lattes.cnpq.br/; Lopes, José Carlos ; https://orcid.org/0000-0002-4880-0547; http://lattes.cnpq.br/; https://orcid.org/0000-0002-7656-3665; http://lattes.cnpq.br/; Passos, Juliana de Lanna ; https://orcid.org/0000-0002-5101-4811; http://lattes.cnpq.br/; Maciel, Khétrin Silva ; https://orcid.org/0000-0002-8590-7917; http://lattes.cnpq.br/; Freitas, Allan Rocha de ; https://orcid.org/; http://lattes.cnpq.br/3436114117792924; Lopes, José Carlos ; https://orcid.org/0000-0002-4880-0547; http://lattes.cnpq.br/
    Passion fruit represents an important economic activity for the southern region of the State of Espirito Santo. There is a notable need for research that helps leverage the commercial passion fruit production system and establish strategies to increase productivity, as well as manage and make use of the variation in available genetic material. In view of the above, the objective of this work was to study biotechnological advances and the genetic diversity of species of the genus Passiflora spp. based on qualitative and quantitative characteristics of plants and the physiological quality of seeds from cultivated and native plants. Intraspecific pollinations will be carried out using plants of passion fruit genotypes native to the Restinga P. mucronata, resistant to Fusarium oxysporum f. passiflorae and Fusarium solani in which plants originating from hybrid seeds will be tested for the heritability of resistance for the indication of commercial passion fruit rootstock, as well as the responses of plants subjected to the use of phytoregulators. The experiments will be conducted at the Seed Analysis Laboratory of the Center for Agricultural Sciences and Engineering at the Federal University of Espírito Santo (CCAE-UFES), municipality of Alegre Espirito Santo. Seeds and seedlings from mature fruits of five species of passion fruit will be used: sour yellow passion fruit (Passiflora edulis f. flavicarpa), sour purple passion fruit (P. edulis Sims), native restinga passion fruit (P. mucronata), passion fruit wild sweet (P. alata spp.), commercial sweet passion fruit (P. alata Curtis). The material comes from the southern region of the state of Espirito Santo 20° 45′ 48″ S - 41° 32′ 2″ W. It is expected from the knowledge and propagation of this material to establish the best method of propagation and conservation of available genetic material, plants free from soil diseases and seminiferous seedlings, from intraspecific hybridizations expressing resistance to Fusarium oxyporum passiflorae, across the various areas of study involved F. oxysporum passiflorae and F. solani
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    Caracterização agronômica, molecular e fitoquímica de espécies do gênero Passiflora
    (Universidade Federal do Espírito Santo, 2018-02-22) Bernardes, Paula Mauri; Ferreira, Marcia Flores da Silva; Santos, Pedro Henrique Araújo Diniz; Lopes, Jose Carlos; Fontes, Milene Miranda Praça; Ferreira, Adésio; Alexandre, Rodrigo Sobreira
    The genus Passiflora is composed of 17 genera and 630 species approximately, with pharmacological, ornamental, industrial and alimentary potential. The passion fruit culture has been gaining market in the sector of the fruit cultivation, because of its fa
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    Diversidade de respostas de plântulas de cultivares de Psidium guajava L. sob estresses osmótico e salino in vitro
    (Universidade Federal do Espírito Santo, 2024-06-24) Silva, Kaoany Ferreira da; Werner, Elias Terra ; https://orcid.org/0000-0001-7781-4342; http://lattes.cnpq.br/; Fontes, Milene Miranda Praça ; https://orcid.org/0000-0001-7738-9518; http://lattes.cnpq.br/; https://orcid.org/0000-0002-1757-4444; http://lattes.cnpq.br/; Ferreira, Márcia Flores da Silva ; https://orcid.org/0000-0003-1541-6634; http://lattes.cnpq.br/; Cavatte, Paulo Cezar ; https://orcid.org/0000-0003-2963-7673; http://lattes.cnpq.br/; Alexandre, Rodrigo Sobreira ; https://orcid.org/0000-0002-5248-6773; http://lattes.cnpq.br/; Karsburg, Isane Vera ; https://orcid.org/0000-0003-3625-1656; http://lattes.cnpq.br/; Santa Catarina, Claudete; https://orcid.org/0000-0002-1669-660X
    Over the years, the occurrence of saline soils and low-quality water has increased in commercial crops, a problem that directly interferes with the productivity of several important crops, including guava (Psidium guajava L.). As the most important fruitful crop in the Myrtaceae family, guava presents great genetic variability and is cultivated in various regions in Brazil, suggesting its high potential for agroclimatic flexibility. The adoption of technologies like in vitro assays has been shown as powerful allies in this domain in front of benefits as high repeatability in small spaces, environmental control and several others. This study aimed to investigate the responses triggered by Psidium guajava L. seedlings under osmotic and saline stresses in vitro through the addition of active compounds, namely Mannitol and NaCl, to the culture medium. In the first chapter, morphological - shoot lenght (mm), root lenght (mm), leaf number and total fresh weight (mg) - and anatomical variables - cuticle and epicuticular wax production - were analyzed in P. guajava ‘Paluma’ under medium without active compounds (Ψos = 0 MPa), 12,26 g L-1 Mannitol (Ψos = -0,5 MPa), 24,52 g L-1 Mannitol (Ψos = -1 MPa), 5,9 g L-1 NaCl (Ψos = -0,5 MPa), and 11,8 g L-1 NaCl (Ψos = -1 MPa) in vitro culture medium. It was observed that P. guajava ‘Paluma’ seedlings exhibited responses such as a reduction in the number of leaves under stress, with a focus on osmotic stress in vitro, and an increase in cuticle and epicuticular wax on leaves under saline stress. In the second chapter, morphological - shoot lenght (mm), root lenght (mm), leaf number and total fresh weight (mg) - and biochemical variables - chlorophyll a (g kg-1 MS), chlorophyll b (g kg-1 MS), carotenoids (g kg-1 MS), phenolic compounds (mg g-1 MS), aminoacids (mM g-1 MS), proline (mmol kg-1 MS) e malondialdehyde (mmol g-1 MS) - of seedlings were analyzed under a factorial design, including the same treatments applied in the first chapter and three commercial cultivars of P. guajava, ‘Paluma’, ‘Cortibel Rugosa Média’, and ‘Cortibel Rugosa Grande’. The results showed differences between the brazilian commercial cultivars of P. guajava under osmotic and saline stress. These differences were noticeable through the responses triggered by their seedlings. All commercial cultivars showed an increase in plant biomass, albeit with distinct "preferences". While P. guajava ‘Paluma’ seedlings increased both fresh and dry mass under both stresses, P. guajava ‘Cortibel Rugosa Média’ seedlings increased their rates under higher Mannitol concentration in the culture medium and both NaCl treatments, and P. guajava ‘Cortibel Rugosa Grande’ seedlings increased under ionic stress in both treatments. It was concluded that P. guajava plants develop differently responses when subjected to osmotic and saline stress. These mechanisms extend to morphological, anatomical and biochemical levels, which varies also among cultivars. Therefore, characterizations of these responses are necessary to understand each cultivar particularities and its climatic aptitude, in order to stablish a correct and efficient handling for each one
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    Métodos multivariados aplicados ao melhoramento genético do feijoeiro visando ao aumento da tolerância ao estresse osmótico e biofortificação de grãos
    (Universidade Federal do Espírito Santo, 2015-08-28) Zanotti, Rafael Fonsêca; Ferreira, Adésio; Posse, Sheila Cristina Prucoli; Lopes, José Carlos; Dalvi, Leandro Pin; Alexandre, Rodrigo Sobreira; Souza, Tercio da Silva
    The common bean (Phaseolus vulgaris L.) is a very important crop economically and nutritionally for the Brazilian population and needs a simple and effective methodology that help the breeding process. The techniques should minimize the adverse effects of
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    Morfologia, propagação e inibidores de germinação do maracujazeiro doce e análise de fitotoxidez do lodo de esgoto
    (Universidade Federal do Espírito Santo, 2016-07-12) Freitas, Allan Rocha de; Alexandre, Rodrigo Sobreira; Lopes, José Carlos; Souza, Tercio da Silva de; Ferreira, Adésio; Silva, Conforti, Adriana Madeira Álvares da
    The sweet passion fruit (Passiflora alata Curtis) is a herbaceous plant, in general climbing plants, which features subcoriaceous leaves, solitary flowers, axillary, fragrant and fruit with sucosa pulp sweet and pleasant taste. Traditionally, commercial o
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    Propagação e avaliação de passifloráceas submetidas a estresses bióticos e abióticos
    (Universidade Federal do Espírito Santo, 2018-07-26) Correia, Arêssa de Oliveira; Alexandre, Rodrigo Sobreira; Lopes, José Carlos; Ferreira, Adésio; Oliveira, Regina Gonçalves dos Santos; Bernardes, Paula Mauri
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    Reguladores vegetais na germinação, vigor e mobilização de reservas em sementes de Passiflora edulis Sims. F. flavicarpa Degener
    (Universidade Federal do Espírito Santo, 2014-02-15) Manhone, Pedro Ramon; Alexandre, Rodrigo Sobreira; Lopes, José Carlos; Dias, Maristela Aparecida; Coelho, Ruimário Inácio
    The passion fruit seeds have related to their physiological quality problems such as uneven germination, which undermines the vigor and seedling formation. Treatments by soaking the seeds accelerate and standardize germination. The objective of this work