01. Universidade Federal Rural de Pernambuco - UFRPE (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/1
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12 resultados
Resultados da Pesquisa
Item Uma análise histórica da mulher na agricultura familiar e sua relevância para preservação da biodiversidade genética e ecológica(2024-03-05) Silva, Jenifer Carla Borges da; Freitas, Nara Suzy Aguiar de; http://lattes.cnpq.br/6891650997818766; http://lattes.cnpq.br/0352343973672028Family farming, essential for food security and sustained by ancestral practices, is marked by the fundamental role of women in the conservation of genetic diversity and the cultivation of traditional varieties. These varieties are vital for the resilience of ecosystems against environmental challenges, but are threatened by modern agriculture and genetic erosion. Therefore, this research aims to analyze the female contribution to family farming and its impact on biodiversity conservation. Using a meta-analysis methodology, the research examines 60 scientific publications, including articles, dissertations, theses, and final papers, to identify trends and gaps in knowledge. Approximately 80% of the studies analyzed include specific information about gender, with 18% focusing specifically on women, reflecting the national reality of female participation in agriculture. Correlation analyses and chi-square tests were applied to investigate the relationship between gender and the use of agrochemicals and organic practices, finding no statistically significant associations. Multiple Correspondence Analysis (MCA) was employed to explore the relationships between seed varieties, methods of acquisition, and geographical locations of farming families in Brazil. The results reveal systemic barriers faced by female farmers, such as limited access to financial resources and agricultural credit. The study also highlights seed selection based on immediate characteristics, the cultural importance of seeds, and the need for supportive policies for family farming. A crucial aspect is the ongoing genetic segregation of Creole seeds, which allows them to adapt to environmental changes and resistance to pests and diseases, although it may result in inconsistencies in production. The artificial selection of Creole seeds by farmers can lead to the loss of valuable genes, underscoring the urgency of expanding the presence of specialized technicians. Family farming in Brazil is revealed in a complex manner, influenced by historical, cultural, and environmental factors.Item Diagnóstico de redes de sementes florestais no Brasil(2024-02-07) Silva, Ana Clara Santana; Santos, Marcone Moreira; http://lattes.cnpq.br/3284707164193715; http://lattes.cnpq.br/5674898094215400Forest seed networks play a fundamental role in the preservation and restoration of forest ecosystems, representing initiatives aimed at conserving native plant species in different biomes. These networks work collaboratively, with the active participation of various social actors, such as local communities, non-governmental organizations (NGOs), research institutions and government entities. The objective of this study was to carry out a comprehensive mapping of forest seed networks in Brazil, with the aim of understanding their distribution, structure and impact on the conservation and restoration of forest ecosystems. For this survey, four methods were adopted: research on the networks' web pages, analysis of Instagram profiles and application of questionnaires, consultation of RENASEM/MAPA with specific filters and analysis of academic articles on Scholar Google, using specific keywords. As a result, it was possible to map twelve forest seed networks in Brazil, identifying four main actors involved. A significant concentration of these networks was evident in the Center-West and Southeast regions of the country, with a significant diversity of native species from the Cerrado, Atlantic Forest and Amazon biomes. The main research institutions and non-governmental organizations were highlighted as the main actors involved in this context.Item Acompanhamento técnico das atividades da terra tecnologia agrícola Ltda – Jaboatão dos Guararapes/PE(2023-05-04) Amorim, Luiz Eduardo Santos de; Melo, Roberto de Albuquerque; http://lattes.cnpq.br/9419474898249921; http://lattes.cnpq.br/5032336323185051Item Relatório de Estágio Supervisionado Obrigatório. Práticas laboratoriais de análise de sementes - IPA(2022-05-27) Carvalho, Robson Oliveira de; Santos, Mércia Virginia Ferreira dos; http://lattes.cnpq.br/9565465836878202Item Seleção de progênies via germinação de sementes de Mimosa caesalpiniifolia B. sob estresse salino(2022-05-26) Ordonho, Larissa Santiago Ritt; Gallo, Ricardo; http://lattes.cnpq.br/5160912065817980; http://lattes.cnpq.br/4822409457783849Mimosa caesalpiniifolia Benth., known as sabiá, is a native forest specie of Caatinga belonging to the Fabaceae family. Species that develop in arid and semi-arid regions, such as sabiá, usually encounter adverse conditions for germination and emergence, such as high soil salinity and water deficit. Thus, the objective of this work was to verify whether it is possible to select progenies of M. caesalpiniifolia that are tolerant to the stress caused by doses of saline solutions in the early stages of development. Seeds were collected from 16 matrices located in different states (PE, PI, CE, RN), four per state. The experiment was carried out in the forest seed analysis laboratory at the Federal Rural University of Pernambuco (UFRPE). To simulate saline stress, NaCl solutions were used, with osmotic potentials of 0.0; -0.2; -0.4; -0.6; -0.8; -1 MPa. Percentage and germination speed index, length and dry mass of shoots and roots and percentage of abnormal seedlings were evaluated. The experimental design was completely randomized with four replications of 32 seeds for each potential. After carrying out the evaluations, the maximum dose of pre-established tolerance was reapplied in four replications of 25 seeds from each provenance to identify the genetic divergence in terms of tolerance to saline stress. For the germination percentage, the values were adjusted to the quadratic regression model and for the germination speed index, the data were adjusted to the decreasing linear regression model, reducing as the osmotic concentration increased. Salinity reduced the germination and vigor of M. caesalpiniifolia seeds, decreasing the characters evaluated at the lowest osmotic potentials. The germination test with sabiá seeds proved to be effective for determining tolerance to salt levels (NaCl), the species M. caesalpiniifolia tolerates low osmotic concentrations of sodium chloride and the critical level selected was -0.4 MPa. Through the Mulamba and Mock index, it was possible to select the P1-CE, P2-PI, P3-RN, P1-PE and P1-PI progenies in early stages of development that showed tolerance to salinity levels for the production of seedlings.Item Relatório de Estágio Supervisionado Obrigatório - ESO. Qualidade fisiológica das sementes de genótipos de feijão-caupi e feijão comum(2022) Nascimento, Lucas Mateus Gomes do; Carvalho, Rejane Rodrigues da Costa e; http://lattes.cnpq.br/3307316028992311; http://lattes.cnpq.br/3658697763020844Item Avaliação de progênies C2 de coentro para germinação e vigor das sementes(2019) Lima, Sonny Mateus Delfim da Silva; Carvalho, Rejane Rodrigues da Costa e; http://lattes.cnpq.br/3307316028992311; http://lattes.cnpq.br/1297066278757054Item Diversidade genética de Schizolobium parahyba var. Amazonicum via biometria de sementes(2019-12-05) Oliveira, Divani de Carvalho; Gallo, Ricardo; http://lattes.cnpq.br/5160912065817980; http://lattes.cnpq.br/4412602011492691Morphometric analyzes in forest seeds can generate relevant information that help in breeding programs, indicating genetic variability among individuals of the same species. Knowing the genetic characteristics of parica seeds (Schizolobium parahyba var. Amazonicum (Huber ex Ducke) Barneby) helps in choosing materials with desirable characteristics to be used in breeding programs, seeking to obtain greater productive potential and may contribute to the advancement of breeding genetic of the species. The objective of this study was to characterize genetic diversity by biometric seed evaluation of S. parahyba var. amazonicum. The seeds were collected in the municipality of Paranaita, Mato Grosso, in forest fragments. Subsequently, 424 seeds from the 6 mother trees were analyzed. The characteristics evaluated were length, width, thickness and weight. The analysis of variance was performed on the collected data and the averages were compared with each other by the Scott-Knott clustering test at the 5% probability level. Genetic dissimilarity was verified by the generalized Mahalanobis distance using the Unweighted Pair Group Mean Average (UPGMA) method, Tocher optimization, canonical variables (VC) and character importance. The results showed great genotypic diversity for the evaluated seeds (especially seed thickness and width), and it was possible to group the mother trees. The result of cluster analysis based on the generalized distance of Mahalanobis (D2) by the Tocher optimization method, showed the formation of two distinct groups, such result reveals a great genetic diversity among the studied genotypes. According to the selective accuracy, it was possible to verify that the methodology used was adequate and of very high selective accuracy. Thus, it was verified that the parica matrices have great potential for use in breeding programs and to highlight seed collection areas.Item Banco de sementes do solo em áreas ciliares em processo de restauração florestal na Zona da Mata Sul de Pernambuco(2019-07-15) Silva, Lucas Benedito da; Feliciano, Ana Lícia Patriota; Silva, Marilia Isabelle Oliveira da; http://lattes.cnpq.br/1029149032423660; http://lattes.cnpq.br/9184673853412326; http://lattes.cnpq.br/2948005042743422This work aimed to evaluate the composition and diversity of soil seed bank species in riparian areas with different stages of forest restoration located in the municipality of Sirinhaém, Zona Sul Mata de Pernambuco. The present research was developed in two areas under restoration process, located at the Usina Trapiche S / A, in the municipality of Sirinhaém, in the region of Mata Sul in the State of Pernambuco. Sampling of the seed bank was performed in 40 plots of 250 m 2, 20 plots in each area, and two samples per plot were collected, totaling 80 samples. The soil was collected to a depth of 0-5 cm, using a square template with dimensions of 0.25 m x 0.25 m (0.03625 m²). The samples were stored in plastic bags and transported to the Forest Nursery of the Forest Science Department of UFRPE. The experiment was set up using 80 perforated plastic trays, with a volume of 0.0767m³. The trays were accommodated in two flowerbeds. On the bed was mounted two structures, one covered by white tulle - (full sun) and another covered by shade screen (70%), making it impossible to contaminate by external propagules. Among the soil trays were randomly arranged 10 trays with sterilized substrate to avoid contamination between the trays inside the structure. Germination was evaluated biweekly over the six-month period. All seedlings were identified to the lowest taxonomic level, quantified and then withdrawn from the trays. The emergent individuals were peeled to polyethylene bags that remained until their flowering, being the same herborizadas and deposited in the herbarium, for identification purposes. The species were classified when the dispersion syndrome, ecological group and its origin. The richness and phytosociological parameters, the Shannon diversity index (H '), the Pielou equability (J'), the Sorensen Similarity and the Hutcheson test were calculated by the MS-Excel 2016 program. The differences between the abundance of seeds of the two areas, their means and medians were obtained by software R °. The maximum seed density found in area 2 was represented by the Shading Screen of 70% (3,205.2 seeds / m²) and for area 1, it was the full sun (3,086.8 seeds / m²). Both areas had a high similarity index (Ss = 25.70%). The highest density in both areas was represented by herbaceous plants with a total of 10,916 seeds / m², of which 5,771.2 for area 2 and 5,144.8 for area 1. The species with the highest VIBS in the seed bank in area 1 and 2 were herbaceous (Lindernia crustacea (L.) F.Muell. And Ludwigia leptocarpa (Nutt.) H. Hara, area 1 and 2. Germinated a total of 19 species with 17 trees in area 2 and 10 in area 1, with 100% of pioneers. The species Solanum paniculatum L., Cecropia pachystachya Trécul and Piper aducum L. were the most representative. Among the total shrub and tree individuals present in area 1 (92.58%) are composed of species that present a zoocoric dispersion syndrome.Item Plano de negócio de uma sementeira(2019) Silva, Marcia Viana da; Corrêa, Maria Iraê de Souza; http://lattes.cnpq.br/9339401156849765