Tessema, Biniyam Asfaw (2015) Wild Relatives of Monocotyledonous Crop Ethiopian Flora. Masters thesis, Addis Ababa University.
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Abstract
This research focused on the current status, distribution and the uses of wild relatives of monocotyledonous crops grown in Ethiopia. The data were collected in two phases. First, data were gathered from literature and herbarium specimens and then field studies were undertaken to collect voucher specimens and ethnobotanical data by using purposive sampling technique and semi-structured interviews. The field study was conducted in six floristic regions of Ethiopia (Gamo Gofa, Gojam, Harerge, Kefa, Shewa and Sidamo). Then after, identification of the voucher specimens were made at the National Herbarium (ETH) of Addis Ababa University using keys in the Flora volumes and authenticated specimens housed at ETH and confirmed by the taxonomic experts. Data were entered in to Microsoft Excel spreadsheet, and then descriptive statistics, informant consensus and ranking exercises were employed for the analysis. From the Flora and other literature sources 17 species of monocotyledonous crop wild relatives were recorded but at the National Herbarium 16 species had voucher specimens. The field survey came up with seven (41.2%) species only, clearly showing the need for more field survey and collection. Wild Colocasia esculenta and Sorghum arundinaceum are abundant in the field while the two wild yam species (Dioscorea bulbifera and Dioscorea praehensilis) have declined through time as affirmed by informants and the finding of these species in the wild environment is very limited. More species of monocotyledonous crop wild relatives were obtained from Kefa floristic region. Informant consensus analysis showed that Sorghum arundinaceum was cited by 22 (48.89 %) informants followed by Dioscorea bulbifera and Dioscorea praehensilis 20 (44.44%) and 18 (40.00%) respectively. Dioscorea praehensilis and Dioscorea bulbifera were reported by informant as highly scarce. The main causes for the depletion of crop wild relatives according to the informants are agricultural expansion and over grazing which scored 21 and 18 respectively. The monocotyledonous crop wild relatives include species that are of high potential in crop breeding and for enhance utilization by the community.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Crop wild relatives, domestication, ethnobotany, monocotyledons, voucher specimen. |
| Subjects: | Q Science > Q Science (General) Q Science > QH Natural history > QH301 Biology Q Science > QK Botany |
| Divisions: | Africana |
| Depositing User: | Selom Ghislain |
| Date Deposited: | 19 Sep 2018 13:33 |
| Last Modified: | 19 Sep 2018 13:33 |
| URI: | http://thesisbank.jhia.ac.ke/id/eprint/5419 |
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