Phylogeny of the genus corchorus (Malvacea S.L.) and diversity analyses in selected species. Evidence from morphology, flow cytometry, and molecular data

This dissertation focuses on the molecular systematic analysis of the genus

Corchorus (Malvaceae s.l.), investigated for the first time using nuclear rDNA ITS

sequences, and addresses diversity of selected species, which were conducted

using morphological, molecular, and flow cytometry methods.

Prior to this study, little information was available regarding the biodiversity and

potential use of jute (Corchorus species) in Ethiopian agriculture. The present study

summarizes species¿ ecological distribution, use, and ethnobotany of Corchorus

species in Ethiopia. About 13 species were recorded, ranking the country second in

the total number of species in Africa. The study revealed low similarity in species

composition between the regional states, indicating that each region has its own

unique set of species. Farmers¿ perception, indigenous knowledge and folk taxonomy

of jute species are more comprehensive in the southwest than other studied regions

of the country. Although several jute species are found in Ethiopia, they are neither

cultivated nor popularly used as leafy vegetables. This part of the dissertation

emphasizes the need for creating of public awareness of jute in Ethiopian agriculture

and recommends conservation measures for some threatened species.