Karyotypes of Species of Sesbania Scop. (Fabaceae)

Abstract

The karyotypes of five species of Sesbania were studied. All species had 2n=12 and there was agreement with x=6 for the genus. The majority of chromosomes were metacentric and their length varied from 2.12 to 6.99μm. Karyotype information is presented for the first time for three species. There are correlations between karyotypes and taxonomic arrangement at subgenus level. Some phylogenetic relationships were discussed. Comparisons of TF% index agreed with the proposals presented in literature.