Genetic Variation in Long Maturing Sorghum [Sorghum Bicolor (L.) Moench] Landraces from Wello and Hararge Regions of Ethiopia

No Thumbnail Available



Journal Title

Journal ISSN

Volume Title


Addis Ababa Universty


A study on the extent and pattem of genetic variability among long maturing sorghum genotypes collected from Wello and Hararge areas of Ethiopia was conducted using morphological and random amplified polymorphic DNA (RAPD) markers. The field experiment was conducted at the experimental field of Melkassa Agricultural Research Center and the molecular work was done at Annauer Hanson Research Institute laboratory, AddisAbaba. A total of 27 morphological traits were recorded from all 26 genotypes included in the study. RAPD marker analysis was conducted on fourteen genotypes sub-sampled, from the different clusters generated using morphological data. Distribution of various qualitative traits between regions and altitudes zones showed variation from total absence to high level of variation from one morphological trait to the other. Mean Shannon-Weaver diversity index (H) varied from 0.04 for grain plumpness to 0.99 for seed color with over all mean of 0.60. Highest heritability and genetic advance was observed for leaf area, plant height, number of primmy branches and number of seeds per head, indicating that selection progress will be expected to be high for these traits. High heritability coupled with high expected genetic gain may be due to high additive gene effects implying that selection applied for these traits would lead to yield in an improvement in . the crop of study. Variation within accessions, regions of origin and altitude classes accounted for a large portion of the total variation for morphological data. But, Nie's diversity index from molecular marker data fails to reflect the within accessions and region variation, rather it showed relatively higher variability between populations and regions of origin. Cluster analysis from morphological data fail to group genotypes either based on their region of origin or altitude classes while cluster from molecular marker tend to arrange genotypes based on their regions of origin regardless of their altitude classes.



Sorghum Bicolor (L.) Moench