Morphometric diversity between fruits and seeds of mahogany trees (Swietenia macrophylla King.) from Parakanã Indigenous Land, Pará State, Brazil

Leão, N. V. M.; Felipe, Sérgio Heitor Sousa; Emidio-Silva, Claudio; Moraes, Antônia Camila dos Santos; Shimizu, E. S. C.; Gallo, Ricardo; Freitas, Alessandra Doce Dias de; Kato, Osvaldo Ryohei

doi:10.21475/ajcs.18.12.03.pne879

Cited by 11 publications

(7 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Fresh fruit weight, pulp rate, fresh pulp weight, and moisture rate were the traits that most helped to explain the difference between materials. Partially similar results were found in research carried out by Leão et al [ 19 ], in the state of Pará Brazil, for the mogno tree species ( Swietenia macrophylla King.) in which the fresh fruit mass was the second characteristic, with 21.47% in explaining the genetic diversity.…”

Section: Discussionsupporting

confidence: 89%

The Influence of Environmental Features on the Morphometric Variation in Mauritia flexuosa L.f. Fruits and Seeds

Sander¹,

Silva²,

Duarte³

et al. 2020

Plants

View full text Add to dashboard Cite

The environmental heterogeneity may reflect the different morphological and phenotypic traits of individuals belonging to a single species. We used 14 morphological traits of Mauritia flexuosa L.f. to understanding the relation between environment and phenotypic traits. Twenty-five fruits were collected from each of the 10 individuals sampled in each study site: Chapada dos Guimarães (CG), Vila Bela da Santíssima Trindade (VB), and Alta Floresta (AF). We analyzed the genetic divergence, using the standardized Euclidean distance, the sequential method of Tocher, unweighted pair group method with arithmetic mean (UPGMA), and the projection of the distances onto 2D plane, and calculated the relative importance of the traits evaluated. The analysis showed the partition of individuals into three main groups: Two groups comprising the majority of individuals. Fresh fruit weight, pulp rate, fresh pulp weight, and moisture rate were the traits that most helped explaining the difference between materials. The results shown in the current study evidenced the influence of these three different environments on the biometric traits of M. flexuosa. Such influence has led to the formation of Alta Floresta and Vila Bela da Santíssima Trindade individuals in different groups, whereas the Chapada dos Guimarães individuals were able to permeate the two other groups, although they showed stronger tendency to group with individuals from Vila Bela da Santíssima Trindade.

show abstract

Section: Discussionsupporting

confidence: 89%

The Influence of Environmental Features on the Morphometric Variation in Mauritia flexuosa L.f. Fruits and Seeds

Sander¹,

Silva²,

Duarte³

et al. 2020

Plants

View full text Add to dashboard Cite

show abstract

“…Swietenia macrophylla King (Meliaceae), commonly known as mahogany, is one of the most important timber resources in the Americas and the most valuable in Mexico [1,2]. Physical, chemical, mechanical, and anatomical properties of its wood contribute to its high economic value.…”

Section: Introductionmentioning

confidence: 99%

“…According to Newton [15] and IUCN [16], it is considered vulnerable to extinction, and was therefore included in 2003 in Appendix II of the Convention on International Trade in Endangered Species of Wild Fauna and Flora [17]. Similarly, Martins-Leão et al [2], mention that in Brazil and other regions it is in danger of extinction. In addition, it has been reported that the seeds of this species are sensitive to desiccation [18], as they cannot support the extreme loss of cellular water and quickly lose their viability.…”

Section: Introductionmentioning

confidence: 99%

Thermal Niche for Seed Germination and Species Distribution Modelling of Swietenia macrophylla King (Mahogany) under Climate Change Scenarios

Sampayo-Maldonado

Ordoñez‐Salanueva

Mattana

et al. 2021

Plants

View full text Add to dashboard Cite

Swietenia macrophylla is an economically important tree species propagated by seeds that lose their viability in a short time, making seed germination a key stage for the species recruitment. The objective of this study was to determine the cardinal temperatures and thermal time for seed germination of S. macrophylla; and its potential distribution under different climate change scenarios. Seeds were placed in germination chambers at constant temperatures from 5 to 45 °C and their thermal responses modelled using a thermal time approach. In addition, the potential biogeographic distribution was projected according to the Community Climate System Model version 4 (CCSM4). Germination rate reached its maximum at 37.3 ± 1.3 °C (To); seed germination decreased to near zero at 52.7 ± 2.2 °C (ceiling temperature, Tc) and at 12.8 ± 2.4 °C (base temperature, Tb). The suboptimal thermal time θ150 needed for 50% germination was ca. 190 °Cd, which in the current scenario is accumulated in 20 days. The CCSM4 model estimates an increase of the potential distribution of the species of 12.3 to 18.3% compared to the current scenario. The temperature had an important effect on the physiological processes of the seeds. With the increase in temperature, the thermal needs for germination are completed in less time, so the species will not be affected in its distribution. Although the distribution of the species may not be affected, it is crucial to generate sustainable management strategies to ensure its long-term conservation.

show abstract

“…Os resultados biométricos para frutos e sementes de Swietenia macrophylla King, coletados de 20 matrizes localizadas em diferentes municípios do sudeste do estado do Pará indicaram alta diversidade fenotípica, independentemente da localização da matriz (LEÃO et al, 2018). Com relação aos estudos de emergência de plântulas, houve diferença significativa entre as procedências para tempo médio de emergência (TME) e índice de velocidade de emergência (IVE), conforme observado na tabela 1.…”

Section: Resultsunclassified

Atributos Biofísicos De Frutos E Sementes E Emergência De Plântulas De Jutaí-Açú

Campos¹,

Leão²,

Shimizu³

et al. 2018

Enci Bio

View full text Add to dashboard Cite

Biometric studies of fruits and seeds can detect phenotypic variability among individuals of the same species and it be applied in breeding programs. Besides, they contribute to the selection of seeds with a higher standard of biophysical quality to be used for the seedlings production. The objective of this study was to evaluate the fruit and seeds biophysical traits and emergency of "jutaí-açú" (Hymenaea courbaril L.) seedlings from different provenance. The fruits and seeds come from the municipalities of Ananindeua and Portel, Pará. For biometric evaluation of fruits and seeds and fresh mass, 50 and 100 units were used, respectively. Additionally, the moisture content and number of seeds per fruit were evaluated. The emergency test was performed in a completely randomized design, consisting four replicates of 25 seeds each. The percentage of emergency (E), emergency speed index (ESI) and average time of emergency (ATE) were evaluated. Ananindeua provenance showed higher averages for length, thickness and number of seeds per fruit. In contrast, the Portel provenance showed the highest averages for length and seed thickness. Ananindeua provenance was higher physiologically in relation to the Portel provenance, with E equal to 73 and 21%, respectively; the TME was 14.86 and 23.03, respectively; and the IVE was 1.27 and 0.23 respectively. The results showed variations between the biophysical and physiological attributes of the two provenances.

show abstract

Morphometric diversity between fruits and seeds of mahogany trees (Swietenia macrophylla King.) from Parakanã Indigenous Land, Pará State, Brazil

Cited by 11 publications

References 15 publications

The Influence of Environmental Features on the Morphometric Variation in Mauritia flexuosa L.f. Fruits and Seeds

The Influence of Environmental Features on the Morphometric Variation in Mauritia flexuosa L.f. Fruits and Seeds

Thermal Niche for Seed Germination and Species Distribution Modelling of Swietenia macrophylla King (Mahogany) under Climate Change Scenarios

Atributos Biofísicos De Frutos E Sementes E Emergência De Plântulas De Jutaí-Açú

Contact Info

Product

Resources

About