Abstract: Groundnut is one of the most important oil crops in Hararghe, Eastern Ethiopia. However, the production of the crop is constrained by several biotic and abiotic factors of which lack of improved varieties is among the major constraints. Therefore, the current study was conducted with the objectives of assessing the extent of genetic variability and characters association and to determine direct and indirect effect of yield related characters and oil content on grain yield. The expe...
Abstract: The study was conducted to investigate the response of common bean genotypes on limed and unlimed acid soils at Bako Agricultural Research Center (BARC) during-2015 main cropping season. The objectives were to evaluate common bean genotypes for tolerance to soil acidity, to determine the effect of liming on yield, yield components and on root phenotypes of common bean genotypes on acidic soil. Sixteen common bean genotypes were tested by using split plot design with three replicati...
Abstract: Lentil is a multipurpose crop grown in many environments of Ethiopia and it is the second center of diversity in the country. However, limited information on genetic variation as well as the association of yield, yield related and nutritional traits is available. Therefore, this study was carried out to assess the genetic variability, traits association, direct and indirect effects of yield related and nutritional traits on grain yield of lentil genotypes. A total of 64 lentil geno...
Abstract: Twenty large seeded bean genotypes were tested in randomized complete block design at Haramaya University field research station with the objectives of estimating the magnitude of genetic variability, heritability and genetic advance, and associations among characters. Analysis of variance revealed statistically significant differences among the twenty genotypes for most of characters studied, indicating the existence of variability and the potential for selection and improvement o...
Abstract: Variability has been reported on wheat for different traits including nitrogen use efficiency (NUE). However there is limited information on NUE variability among wheat cultivars in eastern Ethiopia. Study was conducted to assess genetic variability in NUE among twenty bread wheat cultivars and to assess the association among traits in bread wheat at Haramaya University under two N levels (0 and 41 kg N/ha in 2017 cropping season. The cultivars were evaluated in split plot design w...
Abstract: Sorghum is drought tolerant C4 tropical crop with wide diversity grown for food, feed and beverages. There is a growing demand for food and malt type sorghum varieties due to the low supply of mat barley, climate resilient and gluten free nature of the crop. Therefore, this study was initiated to characterize the malting quality, genetic variability, heritability, associations among traits and the relative importance of traits in influencing grain yield and malting quality of sorgh...
Abstract: Information on the extent of genetic variation and associations among characters is important to design breeding strategies and to develop varieties for the targeted area of production. Therefore, this research was conducted at Sinana Agriculture Research Centre testing site and at Robe on farm, south eastern Ethiopia, with the objectives of evaluating advanced bread wheat genotypes for yield, yield related and quality traits, to assess associations among yield, yield components an...
Abstract: Sorghum known as a Camel crop of cereals, is among the dominant staple food grains for the majority of Ethiopians. In spite of biotic and abiotic stress tolerance, the procedures in the selection of good performing and stable genotypes are complicated by the phenomenon of genotype by environment interaction; therefore, interaction is the major concern to plant breeders to develop improved varieties/hybrids. Forty nine sorghum genotypes (hybrids and open pollinated varieties) were e...
Abstract: Common bean is one of the most important cash crops and protein sources for smallholder farmers in many low lands and mid altitude areas of western Ethiopia. Its production is mainly constrained by soil acidity problem. Furthermore, in the past it has been known that bean varieties are highly sensitive to soil acidity and differential interaction of varieties with the environment, while soil acidity management practices have also been practiced. Thus, the present study was aimed to...
Abstract: Genetic analysis for traits of interest in crop varieties is necessary in designinig appropriate breeding methods. Several varieties of groundnut have been recommended for cultivation in Ethiopia; however, little genetic information has been generated so far. Therefore, this research was conducted with the objectives of assessing genetic variation and association of traits in groundnut varieties; estimate genetic progresses made through decades of breeding efforts and determine eff...
Abstract: The lowland areas of Ethiopia have considerable potential for increased oil crop production including groundnut. In Benishangul Gumuz Region, groundnut is cultivated in various zones and woredas under rainfed condition. However, due to insufficient improved groundnut varieties found in the region the productivity was low. Testing genotypes for the presence of variations and generation of genetic information is the first step in plant breeding to develop varieties for the targeted a...
Abstract: Landraces constitute the basic material for developing any variety or hybrid. Ethiopia has a large number of Desi chickpea landraces cultivated by the farmers through traditional method of selection over centuries. However, chickpea yield in Ethiopia is still below the realizable potential. And the amount and regional distribution of chickpea diversity in the country is relatively unknown and exploitation of valuable local diversity for breeding higher yielding varieties is hindere...
Abstract: Garlic (Allium sativum L.) is an important vegetable crop in Ethiopia. The yield of the crop is often constrained by low and unbalanced nutrient supply in the soil. This study was undertaken to assess response of garlic variety Chelenko I to vermicompost and mineral N fertilizer application on growth and bulb yield of the crop during the 2016/2017 main rainy season. The treatment consisted of a factorial combination of four levels of vermicompost (0, 2.5, 5 and 7.5 t ha-1) and five...
Abstract: xvi GENOTYPIC VARIATION FOR YIELD AND QUALITY CHARACTERS IN BREAD WHEAT GENOTYPES IN CENTRAL TIGRAY, NORTHERN ETHIOPIA ABSTRACT Development of wheat varieties for high yield with desirable grain quality for different agro ecologies of the country is important. Estimation of variability is critical for variety development. This study was conducted at Axum Agricultural research center in 2016/17 main season to assess the extent of genetic variability of wheat genotypes for yield, yie...
Abstract: Conducting multi-location trials along with the commercial varieties and genotype by environment (G x E) data analysis are vital to breeders to develop superior genotypes and to meet the challenges posed by environmental factors. This research was undertaken to evaluate maize hybrids for yield and yield related traits, assess the effect of G x E on grain yield, and determine the yield stability of hybrids across major maize growing areas of Ethiopia. A total of 24 maize hybrids inc...