Pollen viability in Syagrus romanzoffiana and S. coronata (Arecaceae)

Palms of the Syagrus genus have several natural hybrids in Brazil. They are widely cultivated around the world as ornamental palm. S. romanzqffiana is the parental of natural hybrids with other Syagrus species that are potentially useful as palm cultivated for heart of palm production. The objective of this work was to evaluate the pollen grains viability got from plants grown in the Experimental Nursery of the FCAVJ/UNESP, Jaboticabal, SP, Brazil. Pollen grains were sampled from inflorescence in three occasions: in the right day of anthesis, one day before and one day after anthesis. For each day, the inflorescence was subdivided in apical, medium and basal portions where pollen grains were collected. The results shown that: a) for S. coronata there was no statistical differences in pollen viability (pollen viability average = 92.89%); b) for S. romanzoffiana the average pollen viability was 87.27%, 87.47% e 86.85% before, during and after the anthesis, respectively. The basal portion pollen grains had lower viability (85.19% - p<0.01) than those from the medium (88.17%) and the apical (88.46%) portion of the inflorescence. These results shown that both species have no problems with pollen viability and can be used as parental of hybrids with other Syagrus species.

Non-Specific Interaction between Ants (Hymenoptera; Formicidae) and Fruits of Syagrus romanzoffiana (Arecaceae) in an Area of the Brazilian Atlantic Forest

On the forest floor of a fragment of the Atlantic Forest which is considered to be in a stage of recuperation, located in southeastern Brazil, we recorded 54 species of ants interacting with the fruits of Syagrus romanzoffiana (Arecaceae). Myrmicinae was the subfamily which was the richest in species, followed by Ponerinae, Formicinae, Ecitoninae, Dolichoderinae, Pseudomyrmecinae and Cerapachyinae. The fruits of S. romanzoffiana can be classified according to whether or not they are preyed by the squirrel Sciurus ingrami, and the ant fauna that visits the fruits has an average similarity. Regarding diversity, the data suggest that there is no significant difference between ant assemblages at preyed and non-preyed-upon fruit falls. The results also indicate that there is no specific interaction between the ant fauna that visits the fruits of S. romanzoffiana, as it consists largely of species with omnivorous feeding habits.

O silêncio das musas: Épico, ciência e poesia em Haroldo de Campos

The epic and science seem to have been the most important concerns of the Brazilian author Haroldo de Campos (1929-2003) in his last twenty years of life. The books Finismundo: a última viagem and A máquina do mundo repensada are two significant works in his aesthetical journey. This paper presents some strategies for reading both books, in which the relationship between those themes is emphasized. As a starting point, it is believed that the analogy between science and the epic does not represent a paradigm of reading on which the poetry of Harold de Campos intends to base itself, but a way of thinking about the political and literary concerns that constitute its own situation. The creation of a poetics of adventure as an alternative to the end of utopia and the affirmation of a principle of indeterminacy as a way to oppose the interpretations immediately available in the present constitute two of the main interests found in this mode of reading.

Origo Vitae: Um diálogo intertextual entre Haroldo de Campos e Gustave Courbet

This work intends to undertake a comparative reading of two works of two different artists: The painting The Origin of the World by Gustave Courbet and the poem Origo Vitae by Haroldo de Campos and, from this reading, to verify how the border between the visible and the invisible may vanish and how, in a process of transcodifying, one mirrors the other in a dialogue that, besides surpassing different codes and times, produces new meanings and elicits a conversation about the act of reading these different codes.

Proximate composition of guariroba (Syagrus oleracea), jerivá (Syagrus romanzoffiana) and macaúba (Acrocomia aculeata) palm fruits

This study aimed to characterize the pulp and kernel of guariroba (Syagrus oleracea), jerivá (Syagrus romanzoffiana) and macaúba (Acrocomia aculeata) palm fruits, through their proximate composition, carotenoids contents and tocopherol composition. The three kernels showed to be composed mainly of lipids and proteins, as the three pulps, of carbohydrate and fiber. In the kernels the levels of lipids ranged from 45.17 to 56.37% and proteins from 15.46 to 28.61%. In the pulps the total fiber content ranged from 20.26 to 26.98%. The pulps also presented a significant amount of ash, which represents a significant mineral content, especially in the guariroba (5.16%). Moreover, the pulp oils showed higher carotenoids and tocopherol contents. The jerivá pulp oil contained carotenoid and tocopherol on average 1219 μg/g and 323.50. mg/kg, respectively. The consumption of the whole fruit, pulp, and kernel supplies important quantities of many necessary nutrients for human diet, including vitamins A and E. © 2011 Elsevier Ltd.

Seed germination of two Syagrus species native to Brazil

Palm species native to Brazil such as Syagrus picrophylla and S. schizophylla have great ornamental value and for this reason are much demanded for use in landscape. Its propagation is by seeds and often presents considerable problems to nursery managers because their seed has a hard and impermeable shell. Temperature is one of the factors that influence the seed germination process; however, the information for these species is scarce. Thus, this work aimed to study the effects of temperature regimes on the germination of S. picrophylla and S. schizophylla seeds and develop some recommendations in which temperature will obtain high rates of seed germination. The experimental design was entirely randomized with six temperatures and four replications of 25 seeds for each species. Germination and germination rate were evaluated. Higher and faster germination of S. picrophylla and S. schizophylla seeds were verified at constant temperature of 30°C and 35°C; and alternated temperature at 25-35°C.

Influência relativa de parâmetros ambientais e espaciais na diversidade de anuros (Amphibia: Anura) dos Campos Gerais, Paraná, Brasil

Pós-graduação em Biologia Animal - IBILCE

Distribuição ecológica das comunidades de macroalgas de ambientes lóticos em duas unidades de conservação abrangendo os biomas da Floresta Estacional Semidecidual e Campos no estado do Paraná

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Fenologia e sucesso reprodutivo de Attalea geraensis e Syagrus petraea (Arecaceae) na borda e interior de um fragmento de cerrado

Pós-graduação em Ciências Biológicas (Biologia Vegetal) - IBRC

Caracterização dos frutos e dos óleos extraídos da polpa e amêndoa de guariroba (Syagrus oleracea), Jerivá (Syagrus romanzoffiana) e macaúba (Acromia aculeata)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Uma contribuição ao estudo do ajuste ótimo de parâmetros para cálculo de campos eletromagnéticos descontínuos com o método EFG

Pós-graduação em Ciência da Computação - IBILCE

Televisão e música popular na década de 60: as vozes conflitantes de José Ramos Tinhorão e Augusto de Campos

Pós-graduação em Comunicação - FAAC

O financiamento da firma e os arranjos produtivos locais: uma abordagem do APL Aeroespacial de São José dos Campos-SP

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Modelos não-lineares de dois campos e aplicações em cenários de mundos-brana

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Modelos não lineares com campos escalares: ladrilhamento e mundos-brana

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)