Aneuploids and its increment on diversity of Lippia alba polyploid complex: genetic aspects and origin.

Background: Aneuploidy is associated with add or lack of individual chromosomes. The knowledge regarding aneuploidy is still rare in wild and tropical populations. Lippia alba is a tropical polyploid complex naturally formed, with 2x, 3x, 4x, 6x, and aneuploid individuals.

Chromosomal view of Lippia alba, a tropical polyploid complex under genome stabilization process.

Lippia alba is a phenotypically variable tropical shrub thought to comprise a young autopolyploid complex. Chromosome numbers in L. alba include 2n = 30, 38, 45, 60, and 90.

rDNA mapping, heterochromatin characterization and AT/GC content of Agapanthus africanus (L.) Hoffmanns (Agapanthaceae).

Agapanthus (Agapanthaceae) has 10 species described. However, most taxonomists differ respect to this number because the great phenotypic plasticity of the species. The cytogenetic has been an important tool to aid the plant taxon identification, and to date, all taxa of Agapanthus L'Héritier studied cytologically, presented 2n = 30.