GENETIC DIVERSITY IN AMBURANA (Amburana cearensis) ACCESSIONS: HIERARCHICAL AND OPTIMIZATION METHODS

• Autor(a) principal: Souza,Ana Valéria Vieira de
• Data de Publicação: 2021
• Outros Autores: Carvalho,Jackson Rafael de Sá, Costa,Evelyn Sophia Silva, Souza,Cristina Soares de, Silva,Herick Fernando de Jesus, Luz,José Magno Queiroz, Maciel,Gabriel Mascarenhas, Siquieroli,Ana Carolina Silva
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Árvore (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622021000100208
• topic: Caatinga; Genetic conservation; Native tree

ABSTRACT The evaluation of accessions in a germplasm bank is essential for determining the potential parents in conservation programs, especially for native trees. This study aimed to determine the genetic diversity among 68 Amburana cearensis genotypes from different locations in the state of Pernambuco, Brazil. Their genetic patterns were evaluated by Inter Simple Sequence Repeat (ISSR) molecular markers and genetic divergence was evaluated through multivariate analyses using different clustering methods. The optimization method used (Tocher) was in agreement with all the hierarchical models used, in which clustering of the genotypes occurred similarly, specifically for the accession BB116, which is an important genetic material to be preserved and studied. Among the various hierarchical methods applied, the Average Linkage method exhibited higher discrimination power, allowing identification of a larger number of divergent groups, thus implying wide genetic diversity among A. cearensis accessions.