Genetic diversity of Brazil nut tree (Bertholletia excelsa Bonpl.) in southern Brazilian Amazon

被引：27

作者：

Baldoni, Aisy Botega ^{[1
]}

Ribeiro Teodoro, Larissa Pereira ^{[2
]}

Teodoro, Paulo Eduardo ^{[2
]}

Tonini, Helio ^{[3
]}

Tardin, Flavio Dessaune ^{[4
]}

Botin, Andreia Alves ^{[5
]}

Sobreira Hoogerheide, Eulalia Soler ^{[1
]}

Campos Botelho, Silvia de Carvalho ^{[1
]}

Lulu, Jorge ^{[1
]}

de Farias Neto, Austeclinio Lopes ^{[1
]}

Renno Azevedo, Vania C. ^{[6
,7
]}

机构：

[1] Brazilian Agr Res Corp EMBRAPA, Embrapa Agrossilvipastoril, Sinop, Mato Grosso, Brazil

[2] Univ Fed Mato Grosso do SUl UFMS, Chapadao Do Sul, MS, Brazil

[3] Brazilian Agr Res Corp EMBRAPA, Embrapa Pecuaria Sul, Bage, RS, Brazil

[4] Brazilian Agr Res Corp EMBRAPA, Embrapa Milho & Sorgo, Sete Lagoas, MG, Brazil

[5] Univ Fed Mato Grosso, Sinop, Mato Grosso, Brazil

[6] Brazilian Agr Res Corp EMBRAPA, Embrapa Cenargen, Brasilia, DF, Brazil

[7] Int Crops Res Inst Semi Arid Trop, Hyderabad, India

来源：

FOREST ECOLOGY AND MANAGEMENT | 2020年 / 458卷

关键词：

Conservation program; Breeding strategy; Microsatellite; Genetic distance; Diversity between and within; MICROSATELLITE MARKERS; POPULATION; FOREST; POLLINATORS; STATISTICS; PATTERNS; FRAGMENT; DISTANCE; HUMB; MAP;

D O I：

10.1016/j.foreco.2019.117795

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Understanding genetic diversity is the basis of the evolutionary process of any species, as there are mechanisms that increase or reduce genetic variation. Brazil nut (Bertholletia excelsa Bonpl.) occurs in the Amazon region, and is included in the list of endangered species, justifying the importance of this study for the species. This study hypothesized that genetic diversity among individuals collected at different locations in the Amazon (between groups) is greater than genetic diversity between individuals from the same location (within groups). We aimed to study the genetic diversity of four populations of B. excelsa, located in native forests in the Amazon region of the state of Mato Grosso. DNAs were collected from 50 adult trees at each four sites, which were evaluated by seven microsatellite molecular markers (loci Bex06, Bet15, Bet14, Bex09 and Bet16). Genetic diversity of four Brazil nut tree populations collected in the Amazon region were assessed by microsatellite molecular markers. Brazil nut tree revealed to have greater genetic diversity between population than within in individuals in each population, suggesting that seed collection considering a larger number of matrices between a population than within populations is a more effective strategy. The most genetically distant populations were Itauba and Juina, and Itauba and Cotriguacu, showing a relationship with geographical distance and also with differences found in fruit and seed characteristics already reported in other studies evaluating such populations. The findings of this study contribute to the establishment of the species breeding strategies that, in turn, ensure the maintenance and preservation of the genetic diversity of Brazil nut tree in southern Brazilian Amazon.

引用

页数：7

共 53 条

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