AVALIAÇÃO INICIAL DE PROGÊNIES DE MANGABEIRA

A mangabeira (Hancornia speciosa Gomes) é uma espécie frutífera nativa do Brasil. A avaliação de características de crescimento se torna importante em pesquisas de melhoramento genético e podem estar correlacionadas positivamente com produtividade. O presente trabalho objetivou avaliar aspectos iniciais de desenvolvimento em um teste de progênie, que possibilite fundamentos para conservação da mangabeira. Foram avaliadas as variáveis: altura das mudas, diâmetro do coleto e sobrevivência. O delineamento experimental utilizado foi em blocos casualizados, em que os tratamentos consistiram nos diferentes acessos utilizados na produção das mudas e nos tempos de avaliação. Para comparação do tempo de crescimento foi utilizado o teste de Tukey (

Cambuí (Myrciaria floribunda (West ex Willd.) O. Berg): A potential nutritional supplement for inhibition of COVID-19 infections / Cambuí (Myrciaria floribunda (West ex Willd.) O. Berg): Um potencial suplemento nutricional para a inibição de infecções por COVID-19

In the present study, we suggest that the Myrciaria floribunda (West ex Willd.) O. Berg fruit (cambuí) is a natural source of potential molecules against COVID-19. Extracts from orange and purple cambuí were obtained by using pressurized hot water extraction (PHWE). Extraction overall yield was 39.66 ± 1.62% and 33.00 ± 8.44% for the extracts of purple and orange cambuí, respectively. All analyzed extracts showed high total phenolic contents, especially those of purple fruits (3870.37 ± 353.09 mg GAE/100g). The total flavonoid content was 693.16 ± 180.09 and 770.08 ± 103.62 mg RE/100g for purple and orange fruit extracts, respectively. The secondary metabolite profile exhibited ellagic acid, ellagitannins, and derivatives of caffeic acid and ellagic acid. PHWE showed a good alternative for molecules separation from cambuí with promising potential for further in vitro and in vivo evaluation against Covid-19 infections

Identification and preliminary characterization of early fruiting mangabeira (Hancornia speciosa – Apocynaceae)

The mangabeira (Hancornia speciosa G.) is a native Brazilian species in the process of domestication. It has several potential uses. In recent years the populations of mangabeira have become fragmented and, to conserve their genetic resources, Embrapa Tabuleiros Costeiros has, since 2006, maintained a Mangaba Genebank, which currently has 299 individuals distributed across 27 accessions. In one of these accessions (CP), first fruiting was observed to occur at 13 months, indicating precocity. The current project was developed with the intention of morphologically characterizing the CP accessions and evaluating the extent of genetic diversity between genotypes, based on genetic markers associated with fruiting precocity. Morphological variation in crown and leaf shape, growth habit, total height, stem diameter and canopy height were investigated. For molecular characterization, 18 CP accession genotypes were used, all from Sergipe State, Brazil, and 11 ISSR markers were studied that generated 62 fragments with 91.4% polymorphism. The fruits have physical and chemical characteristics suitable for in natura consumption and also for processing. UPGMA dendrogram analysis showed the genotypes CP2 and CP6 to be most similar and CP10 the most divergent within the CP accessions. The results showed the existence of polymorphism, and genetic divergence among genotypes, thus reinforcing the importance of constant germplasm characterization, which guarantees information on gene sources for future use, while providing information concerning potential parents that can be used in breeding programs as well as the identification of duplicates

Fruiting and quality attributes of cambui (Myrciaria floribunda (West ex Willd.) O. Berg in the Atlantic Forest of northeast Brazil

Cambuizeiro is a fruit native to the Atlantic Forest biome that has potential for ornamental use and for human consumption, either raw or processed, due to the organoleptic characteristics of its fruits. Accordingly, the study objective was to evaluate the fruiting periods and quality attributes of two types of cambuizeiros, differentiated by fruit color. The plants studied were from a natural population from the Embrapa Tabuleiros Costeiros Experimental Station, in the municipality of Itaporanga d’Ajuda, state of Sergipe, Brazil. A total of 20 plants, 14 with orange and six with purple fruit, seven days after anthesis (DAA), were evaluated weekly during fruiting. After harvest, the fruits were evaluated for weight, length, width, number of seeds, pH, soluble solids (SS), total titratable acidity (TTA) and vitamin C content. There was heterogeneity in the ripening of the two cambuizeiro types. The highest peak of ripening occurred at 63 DAA (83.2% of orange and 68.3% of purple fruits). The purple fruits had superior physical attributes. However, the pulp of the orange colored fruits had a higher TTA content. Both types of fruits have potential characteristics for commercial exploration and use

Identification and preliminary characterization of early fruiting mangabeira (Hancornia speciosa – Apocynaceae)

The mangabeira (Hancornia speciosa G.) is a native Brazilian species in the process of domestication. It has several potential uses. In recent years the populations of mangabeira have become fragmented and, to conserve their genetic resources, Embrapa Tabuleiros Costeiros has, since 2006, maintained a Mangaba Genebank, which currently has 299 individuals distributed across 27 accessions. In one of these accessions (CP), first fruiting was observed to occur at 13 months, indicating precocity. The current project was developed with the intention of morphologically characterizing the CP accessions and evaluating the extent of genetic diversity between genotypes, based on genetic markers associated with fruiting precocity. Morphological variation in crown and leaf shape, growth habit, total height, stem diameter and canopy height were investigated. For molecular characterization, 18 CP accession genotypes were used, all from Sergipe State, Brazil, and 11 ISSR markers were studied that generated 62 fragments with 91.4% polymorphism. The fruits have physical and chemical characteristics suitable for in natura consumption and also for processing. UPGMA dendrogram analysis showed the genotypes CP2 and CP6 to be most similar and CP10 the most divergent within the CP accessions. The results showed the existence of polymorphism, and genetic divergence among genotypes, thus reinforcing the importance of constant germplasm characterization, which guarantees information on gene sources for future use, while providing information concerning potential parents that can be used in breeding programs as well as the identification of duplicates