Abstract: Durum wheat is one of the most important cereal crops in Ethiopia. The national average productivity and quality of durum wheat is low due to lack of improved varieties and dif erent biotic and abiotic constraints prevailing in the country these calls for development of improved durum wheat varieties. Knowledge on extent of genetic variability and identification of important characters and their interrelationship is a prerequisite for the development of high yielding and quality du...
Abstract: Information on combining ability and heterosis of maize (Zea mays L.) inbred lines is essential to maximize their use for variety development. This study was conducted to estimate general and specific combining ability effects of maize inbred lines and estimate the amount of standard heterosis of the hybrids for yield and yield-related traits. Eight maize inbred lines were mated through a half diallel mating design (Griffing’s Method IV, Model I). The resulting twenty-eight F1 hy...
Abstract: Breeding efforts to convert elite mid-altitude normal maize inbred lines to quality protein maize (QPM) has a recent history in Ethiopia. For a successful QPM hybrid and synthetic variety development, generation of information on heterosis, and combining abilities of newly developed QPM inbred lines is necessary. Accordingly, this study was conducted to estimate the combining ability of QPM inbred lines for grain yield and yield related traits, to estimate the magnitudes of heteros...
Abstract: Ethiopian potato (Plectranthus edulis) is an indigenous, underutilized tuber crop which has received very little attention in research, development, conservation, production and utiliza-tion. Considering the immense potential of biotechnological methods for conservation and im-provement of Ethiopian potato, the present study was designed to develop in vitro protocols for plant regeneration and somatic embryogenesis as well as to assess its genetic diversity. The study was conducted...
Abstract: Sesame is an annual oilseed plant, and indigenous, as evidenced with the presence of wild relatives, to Ethiopia. Despite immense economic importance and genetic resource, the report related to agronomical important traits is limited to very few populations. Thus, the current study was conducted to assess the genetic variability and association in yield, yield related traits and oil content of 36 Ethiopian sesame genotypes. The study was conducted at Babile and Dire Dawa, eastern E...
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...