Cytotaxonomy of malvaceae. II. Chromosome number and karyotype analysis of Thespesia, Hibiscus, Abelmoschus, Pavonia and Malachra.

Five genera of the family Malvaceae are considered for the present work. On the basis of the cytological work 3 genera of the tribe Hibisceae studied can be arranged in the following evolutionary sequence i.e. Thespesia, Hibiscus and Abelmoschus. In the tribe Ureneae the studies of two genera show the evolved nature of karyotype of Malachra capitata over Pavonia. The most primitive nature of the karyotype is found in Thespesia populnea having 2n=28 suggest number 7 can be a base numbers.