Genetic structure and gene flow of Eugenia dysenterica natural populations

Pesquisa Agropecuária Brasileira

Maria Imaculada Zucchi²  José Baldin Pinheiro¹  Lázaro José Chaves¹  Alexandre Siqueira Guedes Coelho¹  Mansuêmia Alves Couto¹  Lizz Kezzy De Morais²  Roland Vencovsky¹ 

[1] ,Instituto AgronômicoCampinas SP ,Brazil

关键词: Myrtaceae;    Cerrado;    tropical species;    genetic diversity;    Myrtaceae;    Cerrado;    espécies tropicais;    diversidade genética;    Eugenia dysenterica;   

DOI  :  10.1590/S0100-204X2005001000005

来源: SciELO

【 摘 要 】

This study was carried out to assess the genetic variability of ten "cagaita" tree (Eugenia dysenterica) populations in Southeastern Goiás. Fifty-four randomly amplified polymorphic DNA (RAPD) loci were used to characterize the population genetic variability, using the analysis of molecular variance (AMOVA). A phiST value of 0.2703 was obtained, showing that 27.03% and 72.97% of the genetic variability is present among and within populations, respectively. The Pearson correlation coefficient (r) among the genetic distances matrix (1 - Jaccard similarity index) and the geographic distances were estimated, and a strong positive correlation was detected. Results suggest that these populations are differentiating through a stochastic process, with restricted and geographic distribution dependent gene flow.

【 授权许可】

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