Abstract: Potato (Solanum tuberosum L.) is a highly heterozygous and has complex tetrasomic inheritance that make difficult to understand the inheritance of traits and implement in hybridization program. However, the genetic variation created in F1 generation could be exploited through asexual propagation. Research efforts carried out in Ethiopia related to improving potato through crossing were limited in scope of breeding works. Thus, this study was conducted at Adet in 2018 to assess the ...
Abstract: In Ethiopia, rice variety development program was started recently but many rice varieties were recommended for production. But recommendation of varieties and introduction of new genotypes alone might not be enough to increase rice yield. This required conducting a multi-location evaluation of varieties and identified wide to specific adaptable variety is critical steps in breeding. Therefore, this research was conducted to determine the effect of genotype (G), environment (E) and...
Abstract: The field experiment was conducted to assess the extent of genetic variability and traits associations in soybean genotypes for yield and its related traits and thereby generate information as well as identify superior genotypes for further improvement program. A total of thirty-six soybean genotypes were evaluated using simple lattice design at Fedis eastern Ethiopia during the 2018 cropping season. Data were recorded for major qualitative and quantitative traits and analyzed usin...
Abstract: Assessment of genetic variability in crop species is one of the major activities of plant breeding which helps to design breeding methos.Keeping this in view, the present study was conducted to assess the genetic variability and character associations among yield and yield related traits in Ethiopian linseed genotypes.Fortiy nine linseed genotypess including four released varieties were evaluated in 7x7simple lattice design at Debre Berhan,North Shewa in 2018 main cropping season.T...
Abstract: Haramaya University had developed Haramaya I carrot variety which does not require vernalization for seed production, However, rates of blended NPS fertilizer and plant population were not determined to produce high seed yield and quality from the variety. This research was conducted to determine the effect of blended NPS fertilizer rates and plant spacing on yield and quality of carrot seed, and to estimate the cost-benefit of blended NPS fertilizer rates in carrot seed production...
Abstract: Sorghum is one of the major staple food crops in eastern Ethiopia where the area is known with an uncertainty of rainfall. Therefore, this study was conducted to assess genetic variability among sorghum genotypes, and to estimate associations among yield and yield-related traits of sorghum genotypes. Thirty-four sorghum genotypes and two improved varities in 6x6 simple lattice designs at Fedis Agricultural Research Center in 2018 cropping season. Results of analysis of variance rev...
Abstract: Quality protein maize (QPM) is a type of maize whose nutritional value has been enhanced through conventional breeding. The production of hybrid QPM is started very recently in Ethiopia that requires extensive research to exploit heterosis to increase the productivity of the crop. Exploitation of heterosis through the production of hybrids is proven breeding method to improve the yield of maize. Accordingly, the objectives of this study were to estimate the magnitude of heterosis a...
Abstract: Genotype by environment interaction and yield stability analysis are important in measuring varietal stability and suitability for cultivation across seasons and different ecological zones. The genetic potential contained within the crop, the environmental effects and their interaction play a great role in determining the yield performance and stability of the crop to a given environment. Such kind of study was lucking at the study areas and the current study was conducted with the...
Abstract: Durum wheat is among the major cereal crops in Ethiopia, but its production has been challenged by several factors. Loss of diversity due to genetic erosion, drought stress and lack of stable genotypes due to genotypes by environment interactions have been among the factors that could be mentioned The overall objective of the present study was to estimate genetic erosion, drought stress and genotype by environment interaction on durum wheat. Three approaches; namely: direct observa...
Abstract: The study was conducted at Haro Sabu Agricultural Research Centre (HSARC) during the 2015 main cropping season. The objectives of the study were to estimate combining ability and to identify direction and magnitude of standard heterosis in mid-altitude maize test crosses for grain yield and yield related traits. Eighteen inbred lines and four single cross testers were crossed in line x tester mating design during the 2014 main cropping season at Bako National Maize Research Center ...
Abstract: There has been no work conducted in Ethiopia to evaluate and document the progress made in improving the genetic yield potential and associated traits of soybean varieties by grouping in to early, medium and late maturity classes. Hence, soybean varieties released/registered in Ethiopia from 1974 to 2015, were grouped in to early (7), medium (7) and late (11) and evaluated at Bako to determine the genetic gain in grain yield potential and associated traits in the last 38, 31 and 12...
Abstract: The yield performance of sorghum cultivars is highly influenced by environmental factors and genotype x environment interaction; therefore interaction is the major concern to plant breeders to develop improved cultivars. Field experiment was conducted to evaluate striga resistant sorghum genotypes during the 2014 cropping season at Fedis,Meiso, Kobo,Pawi and Humera. The materials used in the study consisted of eight striga resistant sorghum genotypes representing the types widely g...
Abstract: The present investigation was carried out in total of 100 sorghum [Sorghum bicolor (L.), Moench] genotypes. The material for investigation consisted of 84 inbred lines, 15 parental lines and one standard check (Melkam) were evaluated using 10x10 simple lattice designs at Sheraro, Northern Ethiopia in 2017 to evaluate sorghum inbred lines for agro-morphological and grain quality traits and to determine the association, direct and indirect effects of yield, yield components and quali...
Abstract: Grasspea is one of the principal grain legumes in Ethiopia adapted to adverse climatic and edaphic conditions. It is high yielding and the only available food source during drought times. However, the grain contains a toxin, ODAP (Oxalyl diamino propionic acid) which causes paralysis of legs when consumed as a stable food for more than three months. In addition, the crop has got less research attention compared to other legumes. As a result, very limited information is available on...
Abstract: Ethiopia is claimed to be center of diversity for cowpea. The crop being the most drought tolerant, and could serve the country to overcome the recurrent drought problem. However, the yield is very low due to the less attention given to develop varietes. This research was aimed at evaluating the stability of cowpea genotypes and estimating the magnitude of genotype, environment and genotype by environment interaction (GEI) effect on stability of grain yield. Sixteen cowpea genotype...