Population structures of Brazilian Tall coconut (Cocos nucifera L.) by microsatellite markers
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 in...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Genética
2010-01-01
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| Series: | Genetics and Molecular Biology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000400016 |
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| author | Francisco E. Ribeiro Luc Baudouin Patricia Lebrun Lázaro J. Chaves Claudio Brondani Maria I. Zucchi Roland Vencovsky |
| author_facet | Francisco E. Ribeiro Luc Baudouin Patricia Lebrun Lázaro J. Chaves Claudio Brondani Maria I. Zucchi Roland Vencovsky |
| author_sort | Francisco E. Ribeiro |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-10T22:17:52Z |
| format | Article |
| id | doaj.art-d7236dfaedfe4a75a6a1e577085c0ef7 |
| institution | Directory Open Access Journal |
| issn | 1415-4757 1678-4685 |
| language | English |
| last_indexed | 2024-12-10T22:17:52Z |
| publishDate | 2010-01-01 |
| publisher | Sociedade Brasileira de Genética |
| record_format | Article |
| series | Genetics and Molecular Biology |
| spelling | doaj.art-d7236dfaedfe4a75a6a1e577085c0ef72022-12-22T01:31:25ZengSociedade Brasileira de GenéticaGenetics and Molecular Biology1415-47571678-46852010-01-01334696702Population structures of Brazilian Tall coconut (Cocos nucifera L.) by microsatellite markersFrancisco E. RibeiroLuc BaudouinPatricia LebrunLázaro J. ChavesClaudio BrondaniMaria I. ZucchiRoland VencovskyCoconut 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000400016coconutgenetic diversitygenetic variabilitymolecular markersSSR |
| spellingShingle | Francisco E. Ribeiro Luc Baudouin Patricia Lebrun Lázaro J. Chaves Claudio Brondani Maria I. Zucchi Roland Vencovsky Population structures of Brazilian Tall coconut (Cocos nucifera L.) by microsatellite markers Genetics and Molecular Biology coconut genetic diversity genetic variability molecular markers SSR |
| title | Population structures of Brazilian Tall coconut (Cocos nucifera L.) by microsatellite markers |
| title_full | Population structures of Brazilian Tall coconut (Cocos nucifera L.) by microsatellite markers |
| title_fullStr | Population structures of Brazilian Tall coconut (Cocos nucifera L.) by microsatellite markers |
| title_full_unstemmed | Population structures of Brazilian Tall coconut (Cocos nucifera L.) by microsatellite markers |
| title_short | Population structures of Brazilian Tall coconut (Cocos nucifera L.) by microsatellite markers |
| title_sort | population structures of brazilian tall coconut cocos nucifera l by microsatellite markers |
| topic | coconut genetic diversity genetic variability molecular markers SSR |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000400016 |
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