期刊论文详细信息
Genetics and Molecular Biology
Population structures of Brazilian Tall coconut (Cocos nucifera L.) by microsatellite markers
Francisco E. Ribeiro2  Luc Baudouin1  Patricia Lebrun1  Lázaro J. Chaves1  Claudio Brondani1  Maria I. Zucchi1  Roland Vencovsky1 
[1] ,Embrapa Tabuleiros CosteirosAracaju SE ,Brazil
关键词: coconut;    genetic diversity;    genetic variability;    molecular markers;    SSR;   
DOI  :  10.1590/S1415-47572010005000077
来源: SciELO
PDF
【 摘 要 】

Coconut palms of the Tall group were introduced to Brazil from the Cape Verde Islands in 1553. The present study sought to evaluate the genetic diversity among and within Brazilian Tall coconut populations. Samples were collected of 195 trees from 10 populations. Genetic diversity was accessed by investigating 13 simple sequence repeats (SSR) loci. This provided a total of 68 alleles, ranging from 2 to 13 alleles per locus, with an average of 5.23. The mean values of gene diversity (He) and observed heterozygosity (Ho) were 0.459 and 0.443, respectively. The genetic differentiation among populations was estimated at θ = 0.1600 and the estimated apparent outcrossing rate was t a = 0.92. Estimates of genetic distances between the populations varied from 0.034 to 0.390. Genetic distance and the corresponding clustering analysis indicate the formation of two groups. The first consists of the Baía Formosa, Georgino Avelino, and São José do Mipibu populations and the second consists of the Japoatã, Pacatuba, and Praia do Forte populations. The correlation matrix between genetic and geographic distances was positive and significant at a 1% probability. Taken together, our results suggest a spatial structuring of the genetic variability among the populations. Geographically closer populations exhibited greater similarities.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License

【 预 览 】
附件列表
Files Size Format View
RO202005130148219ZK.pdf 125KB PDF download
  文献评价指标  
  下载次数:8次 浏览次数:12次