Genetic variation in remnant populations of Dalbergia nigra (Papilionoideae), an endangered tree from the Brazilian Atlantic Forest.

ABSTRACT:

Background and aims

Dalbergia nigra, known as Brazilian rosewood, is an endangered tree species restricted to the Brazilian Atlantic Forest and has been intensively logged for five centuries due to its high-quality wood. The objective of the present study was to assess the genetic variation and structure in adults and saplings of the species from a large reserve of the Atlantic Forest, the Rio Doce State Park, and from two small surrounding fragments, one better preserved and another with a high degree of anthropogenic disturbance.

Methods

Analyses of genetic variation and structure were conducted by studying allozyme markers. Seven putative enzymatic loci were resolved, five of them being polymorphic.

Key results

The mean numbers of alleles per locus (A) were 1.93 an

SUBMITTER: Ribeiro RA 

PROVIDER: S-EPMC4246900 | biostudies-literature | 2005 Jun

REPOSITORIES: biostudies-literature