Browsing by Author "Getnet, Zelalem"

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    Analyzing first Cycle Primary School Textbooks for Diversity Contents: Its Implication For A Multicultural Reform The Case of Addis Ababa
    (Addis Ababa University, 2008-07) Getnet, Zelalem; Sahilemariam, Getachew (PhD)
    This study analyzed selection of primary school first cycle Amharic and Social Studies textbooks for grades 1–4 published in Addis Ababa Administrative Region by means of both qualitative and quantitative analysis of text and illustrations in order to analyze their contribution to social cohesion. The purposes of this research were to determine, whether textbook contents reflect the multiethnic nature of the society, and if multiculturalism’s principles are observed, i.e. if diversity issues are infused into textbook contents and, if textbooks effectively contextualize and exploit diversity and multicultural concerns. Measurable categories were developed for the analysis based on existing literature. The findings of the study indicated that textbook contents most portray groups whose ethnic and cultural background is Undeterminable (Common). Next to the Common/Undeterminable ethnic category, the Amhara and the Tigraway ethnic groups are highly visible where as the Oromo and the Gurage are sometimes found to be underrepresented. Other ethnic groups are very insignificantly mentioned in the contents of both Amharic and Social Studies textbooks. It was also found out that the number of pages devoted to diversity and multicultural concerns is very insignificant as compared to the total pages contained in textbooks and that most contents discussing diversity and multicultural issues are segregated to specific chapters and subchapters. The study also revealed that major diversity and multicultural issues are poorly contextualized and inefficiently exploited.
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    Physiological and Agronomic Performance Evaluation of Stay Green (SG) Sorghum (Sorghum bicolor (L.) Moench) Varieties at Shewa Robit, Amhara Regional State, Ethiopia
    (Addis Ababa University, 2014-07) Getnet, Zelalem; Fetene, Masresha(Professor)
    Drought is one of the major constraints limiting crop production worldwide. Crop growth models predict that this issue will be more severe in the future. Drought impairs normal growth, disturbs water relations, reduces water use efficiency and affects yield. Plants, however, have a variety of morphological, physiological and biochemical responses at cellular and whole organism level, making it a more complex phenomenon. A field experiment was conducted at Shewa robit to evaluate the physiological and agronomic performance of different SG sorghum accessions. To achieve this, three sorghum genotypes (Sorcoll 141/07, Sorcoll 146/07 and, Sorcoll 163/07) and a check (Afeso) accessions were used in the experiment. The experiment was laid down in a randomized complete block design (RCBD). The data on morphological, physiological and biochemical traits such as girth diameter, number of tillers, total green leaf area, chlorophyll content, rate of leaf senescence, relative water content, assimilation rate, WUE, SDW, RDW, RSR, leaf proline, nitrogen, protein, soluble sugar contents, and yield revealed significant difference among accessions at P < 0.05. Afeso and Sorcoll 163/07 showed better stress tolerance and SG property. These accessions were also selected for their maximum grain yield per hectare, while accession Sorcoll 146/07 was selected for its early maturity. Correlation analysis revealed that GD, number of tillers, chlorophyll content, GLA, RWC, WUE, lower rate of leaf senescence, SDW, RDW and RSR had significantly positive relation with grain yield per hectare and have been found to be effective screening tools for stress tolerance and SG property. So, they can be used in sorghum breeding program. Key words/ phrases: Agronomic performance; Biochemical traits; Sorghum accessions; Stay-green; Stress tolerance.