Floral and vegetative morphometrics of three<i>Platonia insignis</i>Mart. (Clusiaceae) populations, a native tree from the Brazilian Amazon

Saraiva, Raysa Valéria Carvalho; Albuquerque, Patrícia Maia Correia de; Girnos, E. C.

doi:10.1080/11263504.2013.791648

Cited by 4 publications

(3 citation statements)

References 32 publications

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“…The correlation between genetic and geographic distances confirmed by the Mantel test, and the strong structure between the Amazon and the Cerrado biomes observed in this study and in Nascimento et al [24] make the isolation of populations by distance evident. Saraiva et al [25] reported that P. insignis populations in different environments that are geographically isolated may accumulate genetic differences, suggesting that the individuals experience habitat-specific selective pressures, the result of which may be ecotypic differentiation, which might explain our results.…”

Section: Genetic Diversity and Structure Among The Bacurizeiro Sample...mentioning

confidence: 60%

“…Studies regarding the pollination of this species are still scarce, with most of them carried out in unnatural conditions. Self-pollination in P. insignis is a possibility that should be considered, indicating that this species is in transition to the mixed system [25,34]. The inbreeding observed in this study may also suggest the inefficient action of pollinators, mainly birds [24,35], given the conditions of habitat degradation and the reduction of these visitors to bacurizeiro flowers.…”

Section: Genetic Diversity and Structure Among The Bacurizeiro Sample...mentioning

confidence: 69%

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Low Diversity and High Genetic Structure for Platonia insignis Mart., an Endangered Fruit Tree Species

Garcia,

Silva,

Carvalho

et al. 2024

Plants

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Platonia insignis is a fruit tree native to Brazil of increasing economic importance, with its pulp trading among the highest market values. This study aimed to evaluate the structure and genomic diversity of P. insignis (bacurizeiro) accessions from six locations in the Brazilian States of Roraima, Amazonas, Pará (Amazon biome), and Maranhão (Cerrado biome). A total of 2031 SNP markers were obtained using genotyping-by-sequencing (GBS), from which 625 outlier SNPs were identified. High genetic structure was observed, with most of the genetic variability (59%) concentrated among locations, mainly between biomes (Amazon and Cerrado). A positive and significant correlation (r = 0.85; p < 0.005) was detected between genetic and geographic distances, indicating isolation by distance. The highest genetic diversity was observed for the location in the Cerrado biome (HE = 0.1746; HO = 0.2078). The locations in the Amazon biome showed low genetic diversity indexes with significant levels of inbreeding. The advance of urban areas, events of burning, and expansion of agricultural activities are most probably the main factors for the genetic diversity reduction of P. insignis. Approaches to functional analysis showed that most of the outlier loci found may be related to genes involved in cellular and metabolic processes.

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Section: Genetic Diversity and Structure Among The Bacurizeiro Sample...mentioning

confidence: 60%

Section: Genetic Diversity and Structure Among The Bacurizeiro Sample...mentioning

confidence: 69%

Low Diversity and High Genetic Structure for Platonia insignis Mart., an Endangered Fruit Tree Species

Garcia,

Silva,

Carvalho

et al. 2024

Plants

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“…A espécie é predominantemente alógama, com autoincompatibilidade esporofítica e apresenta flores grandes, actinomorfas e hermafroditas, (Saraiva et al, 2013). Nos Estados do Piauí e Maranhão, a floração ocorre de julho a outubro, no entanto, ela pode variar nas demais regiões (Souza et al, 2000).…”

Section: Conservation and Degreasing Of Bacury Pollen Grainsunclassified

Conservação e desengorduramento de grãos de pólen de bacurizeiro

Vale

Moreira

Vasconcelos

et al. 2016

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito de métodos de extração da oleosidade de grãos de pólen de bacurizeiro (Platonia insignis), sobre sua viabilidade. Avaliaram-se sete tratamentos para a extração de lipídios do pólen, cinco deles por imersão em éter de petróleo por 30 s (T1), 60 s (T2), 300 s (T3), 600 s (T4), e 900 s (T5), e dois por imersão em 25% de álcool e 75% de éter petróleo por 60 s (T6) e 900 s (T7); e um tratamento-controle, sem a adição de solventes. Posteriormente, os grãos de pólen desengordurados foram submetidos a um teste de germinação in vitro. Os grãos de pólen submetidos a T2, T3, T4 e T5 apresentaram teores de lipídios menores do que o do tratamento-controle. O tratamento T2 promoveu a maior germinação dos pólens.Termos para indexação: Platonia insignis, Clusiaceae, armazenamento de pólen, viabilidade do pólen. Conservation and degreasing of bacury pollen grainsAbstract -The objective of this work was to evaluate the effect of methods of oil extraction from bacury (Platonia insignis) pollen grains, on their viability. Seven treatments were evaluated for lipid extraction of pollen grains, five of which by immersion in petroleum ether for 30 s (T1), 60 s (T2), 300 s (T3), 600 s (T4), and 900 s (T5), and two treatments by immersion in 25% alcohol and 75% petroleum ether for 60 s (T6) and 900 s (T7); besides a control without solvents. Subsequently, degreased pollen grains were subjected to an in vitro germination test. Pollen grains subjected to T2, T3, T4, and T5 showed lower lipid content than the control treatment. The T2 treatment provided the highest germination of pollen.

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Nuclear and chloroplast microsatellites reveal high genetic diversity and structure in Platonia insignis Mart., an endangered species native to the Brazilian Amazon

Nascimento

Dequigiovanni²,

Ramos

et al. 2021

Acta Bot. Bras.

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Floral and vegetative morphometrics of threePlatonia insignisMart. (Clusiaceae) populations, a native tree from the Brazilian Amazon

Cited by 4 publications

References 32 publications

Low Diversity and High Genetic Structure for Platonia insignis Mart., an Endangered Fruit Tree Species

Low Diversity and High Genetic Structure for Platonia insignis Mart., an Endangered Fruit Tree Species

Conservação e desengorduramento de grãos de pólen de bacurizeiro

Nuclear and chloroplast microsatellites reveal high genetic diversity and structure in Platonia insignis Mart., an endangered species native to the Brazilian Amazon

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