Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Paternity analysis, pollen flow, and spatial genetic structure of a natural population of Euterpe precatoria in the Brazilian Amazon

Full text
Author(s):
Ferreyra Ramos, Santiago Linorio [1] ; Dequigiovanni, Gabriel [2] ; Sebbenn, Alexandre Magno [3] ; Gomes Lopes, Maria Teresa [4] ; Vasconcelos de Macedo, Jeferson Luis [5] ; Veasey, Elizabeth Ann [2] ; Alves-Pereira, Alessandro [2] ; da Silva, Perla Pimentel [6] ; Garcia, Jose Nivaldo [7] ; Kageyama, Paulo Yoshio [7]
Total Authors: 10
Affiliation:
[1] Univ Fed Amazonas, Inst Ciencias Exatas & Tecnol, Itacoatiara, AM - Brazil
[2] Univ Sao Paulo, ESALQ, Dept Genet, Piracicaba, SP - Brazil
[3] Inst Florestal Sao Paulo, Secao Melhoramento & Conservacao Genet Florestal, Sao Paulo, SP - Brazil
[4] Univ Fed Amazonas, Fac Ciencias Agr, Manaus, AM - Brazil
[5] Embrapa Amazonia Ocidental, Manaus, AM - Brazil
[6] Univ Estadual Paulista, Inst Pesquisa Bioenergia, Rio Claro, SP - Brazil
[7] Univ Sao Paulo, ESALQ, Dept Ciencias Florestais, Piracicaba, SP - Brazil
Total Affiliations: 7
Document type: Journal article
Source: ECOLOGY AND EVOLUTION; v. 8, n. 22, p. 11143-11157, NOV 2018.
Web of Science Citations: 0
Abstract

Euterpe precatoria, known as acai do Amazonas, is a regionally important palm of the Amazon rainforest for the fruit production through extractive agriculture. Little information is available with regard to genetic diversity, gene flow, and spatial genetic structure (SGS) of acai populations, which are essential for the use, management, and conservation of genetic resources of the species. This research aimed to assess the genetic diversity, inbreeding level, SGS, and gene flow in four ontogenetic stages of a natural E. precatoria population in the Brazilian Amazon, based on 18 microsatellite loci. The study was carried out in a natural population dispersed in an area of about 10 ha. Leaf tissues of 248 plants were mapped and sampled and classified into four ontogenetic stages: reproductive (59), immature (70), young (60), and seedling (59). Genetic diversity indices were high for all ontogenetic stages. The fixation index (F) for all ontogenetic stages was not significantly different from zero, indicating the absence of inbreeding. A significant SGS was found for all ontogenetic stages (68-110 m), indicating seed dispersal over short distances. Paternity analysis detected pollen immigration of 39.1%, a selfing rate of 4.2%, and a mean pollen dispersal distance within the population of 531 m. The results indicate substantial allele input in the population via pollen immigration, contributing to the maintenance of the genetic diversity of the population. However, within a population, the renewal with new progenies selected from seed plants spaced at least 110 m apart is important to avoid collecting seeds from related plants. (AU)

FAPESP's process: 14/10947-8 - Genetic diversity and structure, gene flow and mating system of Euterpe precatoria Mart. in natural populations in the Amazon, in the states of Acre, Roraima and Amazonas, by microsatellite markers
Grantee:Santiago Linorio Ferreyra Ramos
Support Opportunities: Scholarships in Brazil - Post-Doctoral