Nutritional potential of forage species found in Brazilian Semiarid region

2017 ◽  
Vol 195 ◽  
pp. 118-124 ◽  
Author(s):  
K.C. Santos ◽  
A.L.R. Magalhães ◽  
D.K.A. Silva ◽  
G.G.L. Araújo ◽  
G.M. Fagundes ◽  
...  
2020 ◽  
Vol 42 ◽  
pp. e44076
Author(s):  
Ana Paula Gomes da Silva ◽  
Divan Soares da Silva ◽  
Mailson Monteiro do Rego ◽  
Albericio Pereira de Andrade ◽  
Fleming Sena Campos ◽  
...  

 The aim of this study was to perform a morphological and morphoagronomic analysis of wild Manihot species from a Brazilian semiarid region for inclusion in the collection at the Center for Agricultural Sciences, Federal University of Paraíba. To characterize the 55 accessions, 12 quantitative and 18 qualitative descriptors were used. A dissimilarity matrix was generated by Mahalanobis generalized distance (D²), and clusters were identified by the UPGMA method. It was possible to verify the formation of 8 dissimilar groups based on morphological characters and 5 groups based on morphometric characters, indicating the presence of genetic diversity among accessions. The evaluated morphometric variable with the greatest relative contribution was the length between the central lobe. Based on the dissimilarity matrix, the accessions 16 x 48 were the most genetically distant accessions, followed by 47 x 49. The accessions 4 Monteiro, 16 Soledad, 38 Boa Vista, 3 Pedra Lavrada, 7 Junco, 10 Barra de Santa Rosa, 21 Monteiro, and 39 Junco are the most promising and can be used as parents in breeding programs for this forage species.


Author(s):  
Uemeson José dos Santos ◽  
Everardo Valadares de Sá Barretto Sampaio ◽  
Eunice Maia de Andrade ◽  
Alexandre de Siqueira Pinto ◽  
Bruno de Oliveira Dias ◽  
...  

2021 ◽  
pp. 1-12
Author(s):  
José Almir Cirilo ◽  
Alfredo Ribeiro Neto ◽  
Nyadja Menezes Rodrigues Ramos ◽  
Carla Fernanda Fortunato ◽  
Júlia Daniele Silva de Souza ◽  
...  

2018 ◽  
Vol 30 (0) ◽  
Author(s):  
Josiane Souza Santos ◽  
Nadson Ressyé Simões ◽  
Sérgio Luiz Sonoda

Abstract Aim: The objective of this study was to investigate the spatial and temporal variation of microcrustacean assemblages of a reservoir in the Brazilian semiarid region. Methods Physical and chemical water variables and samples of microcrustaceans were collected at eight sites of the reservoir between July 2013 and November 2014, in a total of seven campaigns. For this study, the reservoir was categorized in two compartments: lateral and central. Results Limnological variables showed significant temporal variation (PERMANOVA, Pseudo-F = 19.51, p = 0.001). Higher turbidity values and suspended solids were observed in the rainiest months, while during the dry months, we measured higher values of transparency, dissolved oxygen, and chlorophyll-a. It was not found significant spatial variation of limnological variables (PERMANOVA, Pseudo-F = 0.96; p = 0.394). During the study period, ten species were recorded: four Cladocera (Ceriodaphnia cornuta, Daphnia gessneri, Diaphanosoma birgei and Diaphanosoma spinulosum ) three Copepoda Calanoida (Argyrodiaptomus azevedoi, Notodiaptomus cearensis and Notodiaptomus iheringi) and three Copepoda Cyclopoida (Macrocyclops albidus, Thermocyclops minutus and Thermocyclops decipiens). The microcrustacean assemblages showed significant temporal variation (PERMANOVA, Pseudo-F = 4.34; p = 0.001) as well as significant spatial variation (PERMANOVA, Pseudo-F = 9.46; p = 0.001). The highest values of abundance and richness were observed in the lateral compartment, this result is mainly related to the presence of aquatic macrophytes in this region, because the analysis of partial RDA indicated that limnological variables explained only 11% of this variation (Pseudo-F = 2.08, p = 0.001). Conclusions The results suggest that the seasonality of the semiarid is an important factor in the temporal dynamics of the limnological variables, while the aquatic macrophytes play an important role in the spatial distribution of the microcrustacean assembly.


2014 ◽  
Author(s):  
Sergio Rosim ◽  
João Ricardo de Freitas Oliveira ◽  
Jussara de Oliveira Ortiz ◽  
Miguel Zanic Cuellar ◽  
Alexandre Copertino Jardim

2021 ◽  
Vol 26 (2) ◽  
Author(s):  
Luan Pedro-Silva ◽  
Thaynara Sousa Silva ◽  
José Iranildo Miranda De Melo

2021 ◽  
Vol 7 (7) ◽  
pp. 69081-69099
Author(s):  
Tatiane Aparecida Queiroz ◽  
Francisca Patrícia Barreto De Carvalho ◽  
Alfredo Marcelo Grigio ◽  
Weslley Misael Bezerra Damasio ◽  
Lara Candice Costa de Morais Leonez ◽  
...  

Author(s):  
Diego de M. Bento ◽  
Marconi Souza-Silva ◽  
Alexandre Vasconcellos ◽  
Bruno C. Bellini ◽  
Xavier Prous ◽  
...  

Author(s):  
Laylson da Silva Borges ◽  
Geandro Carvalho Castro ◽  
João Lopes Anastácio Filho ◽  
Isak Samir de Sousa Lima ◽  
Flávio Carvalho de Aquino ◽  
...  

2019 ◽  
Vol 11 (4) ◽  
pp. 536
Author(s):  
Jucirema Ferreira da Silva ◽  
Jeane Cruz Portela ◽  
Nildo da Silva Dias ◽  
Cezar Augusto Medeiros Rebouças ◽  
Francisco Ernesto Sobrinho ◽  
...  

The ethnopedological approach to soil characterization presents great challenges, since the understanding of the systems occurs through the knowledge acquired by the man in his coexistence with agroecosystems. The aim of the present research was to characterize the agricultural soils through morphological, physical and chemical analysis, using ethnopedological studies in the ‘Santa Agostinha’ Settlement Project, Caraúbas-RN, Brazil. Five areas were defined for study in the soil/landscape relation: i) area with cashew cultivation; ii) area of pasture; iii) area of crops in consortium; iv) agroforestry; and v) preserved forest, used as the reference. Participatory workshops, exchanges and classifications (from the locals and formal) were carried out with the analysis of the morphological, physical and chemical attributes of the studied soils in the layers of 0.00-0.10, 0.10-0.20 and 0.20-0.30 m. The results of the ethicist classification, based on the attributes evaluation were: Quartzarenic latosol NEOSOL (cashew area); Regolitic euthrofic NEOSOL (pasture area); Ortic quartzarenic fragiudult NEOSOL (intercropping area); typical quartzarenic ortic NEOSOL (agroforestry area and typical hydromorphic quartzarenic NEOSOL that presented a close relation with the emicist classification (from the local people). The observation of the different soil types in the landscape, due to the stratification of the environments, allowed the growers to identify characteristics associated with soil potentials and restrictions and, consequently, the correct management to be adopted. The experiences of local growers in the participatory workshops provided an exchange of popular and scientific knowledge, as well as new perspectives of coexistence with the semiarid.


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