Data/hora: 16/06/2024 10:19:55

Biblioteca(s): | Biblioteca Rui Tendinha.
Data corrente: | 24/11/2020
Data da última atualização: | 30/11/2020
Autoria: | JÚNIOR, A. L. da S.; CABRAL, R. L. R.; SARTORI, L.; SOUZA, L. C. de; MIRANDA, F. D. de; CALDEIRA, M. V. W.; MOREIRA, S. O.; GODINHO, T. de O.
Afiliação: | Adelson Lemes da Silva Júnior, UFES; Rafael Lara Rezende Cabral, UFES; Lara Sartori, UFES; Lucimara Cruz de Souza, UFES; Fábio Demolinari de Miranda, UFES; Marcos Vinicius Winckler Caldeira, UFES; Sarah Ola Moreira, Incaper; Tiago de Oliveira Godinho, Vale Linhares.
Título: | Evaluation of the diversity and genetic struture as strategies for conservation of natural populations of Dalbergia nigra (Vell.) Allemão ex Benth.
Ano de publicação: | 2020
Fonte/Imprenta: | CERNE, v. 26, n. 4, p. 435-443, nov. 2020.
Idioma: | Inglês
Conteúdo: | The evaluation of diversity and genetic structure allows us to verify with precision the effect of evolutionary and anthropic processes on species. The objective of this research was to evaluate the divergence and the genetic structure of two natural populations of Dalbergia  nigra,  using  molecular  markers  Inter  Simple  Sequence  Repeats  (ISSR).  Leaf samples were collected from two populations, located in the National Forest of Pacotuba and the Private Natural Heritage Reserve of Cafundó. Eight ISSR primers were used, which resulted in 97 bands, with 68.04% of polymorphism. Based on the joint data, the values of 0.33 for the Nei index (H*) and 0.50 for the Shannon index (I*) indicated moderate to high genetic diversity, being influenced by the presence of genetically dissimilar individuals in the National Forest of Pacotuba. Most of the genetic  divergence  was  intrapopulational  (85.96%),  with  moderate  differentiation  between  populations  (&#934;ST = 0.1404). The estimated historical gene flow between the  fragments  was  low  (Nm  =  3.21)  when  compared  with  results  from  other  tree  species,  and  the  genetic  structuring  analysis  separated  the  populations  into  two  groups, corresponding to the two populations evaluated. The results indicate a small genetic  share  among  populations,  however,  populations  are  becoming  structured.  The satisfactory levels of genetic diversity benefit the use of the trees as matrixes for programs of restoration and recovery of degraded areas, connectivity of landscapes, and sustainable use of forest resources.
Palavras-Chave: | Jacarandá-da-baía.
Thesagro: | Dalbergia Nigra; Genética Vegetal.
Thesaurus NAL: | Ecological genetics.
Categoria do assunto: | K Ciência Florestal e Produtos de Origem Vegetal
URL: | https://biblioteca.incaper.es.gov.br/digital/bitstream/123456789/4124/1/dalbergia-nigra-moreira.pdf
Registro original: | Biblioteca Rui Tendinha (BRT)
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