Firew Mekbib

• Haramaya University

Ethiopian potato is an underutilized tuber crop with cultural and medicinal values, cultivated by smallholder farmers mainly for food. The study was conducted to develop an efficient protocol for generating callus, somatic embryo, and in vitro plant regeneration in three genotypes of Ethiopian potato. A combination of 2,4-dichlorophenoxyacetic acid...

It is essential to comprehend genetic diversity for the conservation and effective utilization of crop genetic resources. There is limited information on genetic resource collection, phenotypic characterization, and conservation of sorghum genotypes in Ethiopia, particularly in the southern region. The study was conducted at the Jinka Agricultural...

It is essential to comprehend genetic diversity for the conservation and effective utilization of crop genetic resources. There is limited information on genetic resource collection, phenotypic characterization, and conservation of sorghum genotypes in Ethiopia, particularly in the southern region. The study was conducted at the Jinka Agricultural...

For sustainable genetic improvement of crops like sorghum, assessing genetic variability and knowing the nature and extent of the association between grain yield and yield-related traits is a prerequisite. However, there needs to be sufficient information about the genetic variability study as well as yield-related trait correlation and path coeffi...

A multi-environment evaluation of sorghum genotypes was conducted across six environments in the 2021 main growing season in a randomized complete block design with three replications. The objectives of the study were to estimate the magnitude of genotypes by environment interaction (GEI) and grain yield stability of drought-tolerant sorghum genoty...

Barley (Hordeum vulgare L.) is a major grain crop farmed in Ethiopia throughout the long rainy season (Meher) and the short rainy season (Belg) of the year. Barley genotypes were subjected to multi‐environment experiments in six different settings to identify stable genotypes and estimate the impact of genotype × environment interaction (GEI) on gr...

A multi-environment evaluation of sorghum genotypes was conducted across six environments in the 2021 main growing season in a randomized complete block design with three replications. The objectives of the study were to estimate the magnitude of genotypes by environment interaction (GEI) and grain yield stability of drought-tolerant sorghum genoty...

Environmental changes pose major impacts on the performance of crop genotypes with important implications for crop improvement strategies. Hence, breeders pay attention to the effects of genotype by environment interaction (GEI) to mine genetic resources and select adapted genotypes. Twenty sorghum genotypes selected from a large collection of Ethi...

Background Sorghum anthracnose is a major disease that hampers the productivity of the crop globally. The disease is caused by the hemibiotrophic fungal pathogen Colletotrichum sublineola. The identification of anthracnose-resistant sorghum genotypes, defining resistance loci and the underlying genes, and their introgression into adapted cultivars...

Physiological responses to drought

The genetic basis of sorghum genotypes resistance to sorghum anthracnose

The study was conducted to estimate the extent of genetic variation, association between storage tuber yield and yield related traits and to identify the most persuasive character(s) involving 36 yam genotypes for selection and conservation. Field evaluation was conducted at Jimma Agricultural Research Center in Ethiopia using a 6x6 lattice design...

The study was carried out to assess the nature and magnitude of genetic variability for grain quality traits in lowland sorghum accessions. Understanding genetic diversity and trait association is crucial to designing an effective breeding plan to develop nutrient-rich varieties. Two hundred twenty-five accessions were evaluated using a simple latt...

https://wiley.atyponrex.com/submission/submissionBoard/0cedca37-f3aa-4050-89bb-2f1f07af11ba/finalReview

The objective of this study was to assess how GEI affected the grain yield of barley genotypes' and to utilize AMMI and GGE biplot analysis to understand this effect. Field experiment was conducted with an objective to assess how GEI affected the grain yield of barley genotypes' and to utilize AMMI and GGE biplot analysis to understand this effect....

Genetic variability among lowland sorghum accessions from southern Ethiopia for grain quality traits

Agriculture, Cropping system, and cultivar compatibility to the cropping system, and performance of common bean under intercropping

Environmental changes pose major impacts on the performance of genotype with important implications for crop improvement strategies. Hence, breeders pay attention to the effects of GxE interaction (GEI) for exploitation of genetic resources. Twenty sorghum genotypes selected from a large collection of Ethiopian sorghum landraces and two improved va...

Understanding genetic diversity is vital for the conservation and utilization of genetic resources of crops. To date, available information on genetic resource collection, phenotypic characterization, and conservation of mung bean genotypes in Ethiopia is limited. To fill these knowledge gaps, the present study was conducted at Jinka Agricultural R...

Information about the nature and extent of association between seed yield and yield-related traits is important for sustainable genetic improvement. However, there is a lack of sufficient information on seed yield and yield-related trait correlation and path coefficient analysis of mung bean in Ethiopia. Therefore, there is a need to conduct correl...

Nitrogen deficiency is the most limiting abiotic stress factor affecting the grain yield of cowpea (Vigna unguiculata L.) in sub-Saharan Africa (SSA) countries. Breeding for high-yielding potential in association with high nitrogen fixation performance is the principal objective of cowpea breeding programs to improve both the productivity and produ...

Understanding genetic diversity is indispensable for conserving and utilizing the genetic resources of orphan crops. Information on cowpea genetic resource collections, and its characterization and conservation in Ethiopia is limited. The objectives of this study were to determine the extent of genetic diversity within cow-pea genotypes, assess the...

Assessment of genetic variability in crop species is one of the major activities to meet the diversified goals in plant breeding programs. However, there is a lack of sufficient information on the genetic variability study of mung bean. Therefore, field experiment was conducted on sixty mung bean genotypes with the objectives to assess the genetic...

Twenty large seeded common bean varieties released over two decades were evaluated at five locations in 2017 main cropping seasons in Ethiopia. The objective of the study was to determine the magnitude and pattern of G × E interaction and yield stability. The study was conducted using a randomized complete block design with three replications. G ×...

Barley is one of the most important cereal crops cultivated over a wider environment in the diverse agro-ecologies in Ethiopia. Study on genotype by environment interaction and stability analysis using thirty barley genotypes was conducted across nine environments in randomized complete block design with three replications to study the magnitude of...

Yam production in Southwest Ethiopia is threatened by a socioeconomic, a biotic and biotic factors. The objective of this study was to document the major yam production constraints, farming systems, the number of farmers identified landraces and trait preferences from major growing areas of Southwest Ethiopia. A participatory rural appraisal study...

Plectranthus edulis is among the most ancient and native tuber crops in Ethiopia, which is mainly cultivated by smallholder farmers. Being an orphan crop, it has not received due research attention. To tackle major crop-production constraints through breeding, knowledge of its genetic diversity is a prerequisite. Thus, the current study was carried...

Cowpea is one of the most important indigenous food and forage legumes in Africa. It serves as a primary source of protein for poor farmers in drought-prone areas of Ethiopia. The crop is used as a source of food, and insurance crop during the dry season. Cowpea is adaptable to a wide range of climatic conditions. Despite this, the yield of the cro...

In vitro Evaluation of Tef [Eragrostis tef (Zucc) Trotter] Genotypes for Drought Tolerance

Anchote is one of the most important but underutilized indigenous root tuber crops in Ethiopia. Lack of improved varieties is among the most important factors limiting production of the crop. Considering the significant contribution of in vitro haploid production in the development of improved variety, an experiment was conducted to develop in vitr...

Black pepper belongs to the family Piperaceae. It is a perennial woody climbing tree. In Ethiopia, black pepper, known as ''Kundo berbere' or 'Yebahir kimem'. Lack of a steady supply of quality planting material is one of the bottlenecks for the exploitation of the export potential of black pepper. Thus use of micro propagation is suggested to alle...

Barley is an important food security and industrial crop in Ethiopia and its production is constrained by several factors including soil acidity stress. Thus, an experiment was conducted using 320 barley genotypes in alpha lattice design with two replications at Holeta, Jeldu and Midakegn testing sites during 2017 and 2018 to assess genetic variabi...

Cowpea is one of the most important indigenous food and forage legumes in Africa. It serves as a primary source of protein for poor farmers in drought-prone areas of Ethiopia. The crop is used as a source of food, and insurance crop during the dry season. Cowpea is adaptable to a wide range of climatic conditions. Despite this, the productivity of...

Genetic diversity present within and between populations is crucial for breeding and conservation. The objective of this study was to assess the genetic diversity in yam landraces by using agro-morphological and microsatellite markers. Phenotypic diversity of 36 landraces collected from southwest Ethiopia was determined using diversity indices, pri...

Sorghum anthracnose caused by the fungal pathogen Colletotrichum sublineolum, is one of the most economically important diseases of sorghum globally and in Ethiopia. Breeding for resistance to this highly variable pathogen requires identification of new sources of resistance. Here we describe the identification of new sources of anthracnose resista...

Mung bean is an important pulse crop grown by poor farmers in marginal and drought-prone areas of Ethiopia. Information on the extent of genetic divergence in mung bean is vital to identify diverse genotypes for crop improvement and the efficient utilization of the existing genetic resources. Therefore, the objectives of the study were to assess th...

Sorghum (Sorghum bicolor) known as a Camel crop of cereals, is among the dominant staple food grains for the majority of Ethiopians. Forty nine sorghum genotypes (hybrids + open pollinated varieties) were tested at five locations in a simple lattice design with two replications during the 2016 main cropping season. The objectives of this study were...

Aim: The study was undertaken to assess the genetic variability and character association in 81 mid-altitude sesame accessions of Ethiopia based on important agronomic traits. Study Design: A 9 x 9 Simple Lattice Design (SLD) with two replications was used. Place and Duration of Study: Melkassa Agricultural Research Centre Ethiopia, during the July...

Background Bread wheat is one of the most important cereal crops produced in almost all agro-ecologies of Ethiopia. Assessment of genetic variability in crop species is one of the major activities of plant breeding which helps to design breeding methods for further evaluation to meet the diversified goals. Methods The experiment was laid out in 8x...

AMMI stability analysis for black cumin genotypes across major black cumin growing agroecologies

Yams (Dioscorea spp.) are an important crop widely food, feed and medicine in different areas of the world. Knowledge on genetic diversity among yam landraces is essential for breeding and conservation strategies. The objective of this study was to assess the level of genetic diversity present among yam landraces using phenotypic traits. Thirty-six...

Understanding the nature of associations among economically important traits is essential to improve selection efficiency in plant breeding programs. This study aimed to determine the magnitude of association between tuber yield and related traits and to identify the most influential character (s) involving 36 landrace collections of yams for effec...

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 conc...

Background and Objective: Scald caused by Rhynchosporium cummune is among the most important disease causing significant yield losses in barley yield. The aim of this study was to investigate the nature of gene actions and combining ability of parents which is useful in designing effective breeding for scald resistant barleys. Materials and Methods...

Genetic analysis is useful to generate information to design appropriate breeding methods. Thus, this study was conducted on barley using six generations of (P1, P2, F1, F2, BC1 and BC2) in HB42 x Sabini cross with the objective of investigating the gene effects and its interactions gene effects controlling the characters studied. The six generatio...

Analysis of on farm diversity of plant genetic resources is fundamental for breeding and utilization. The study was conducted to assess farmers' insight for classification, distribution, quantify the rate of genetic erosion and identify major factor that causes ofgenetic erosion on yam in Southwest Ethiopia forstrategic conservation. A field survey...

A total of twenty five bread wheat (Triticum aestivum L.) genotypes were evaluated for trait association and path coefficient analysis among yield and yield contributing traits at Gurage zone of two different environments. The genotypes were grown in triplicate randomized complete block design. Data were collected on 13 agronomic characters. It was...

The study was conducted to characterize early maturing sorghum genotypes under moisture stress and non-stress environments based on root angle. Phenotyping of 23 early maturing sorghum genotypes was carried out under post-flowering moisture stress and non-stressed environment using randomized complete block design (RCBD) in two replications at Were...

Information on harvest stages on yams is prerequisite for recommendations to growers and food processors. Consequently, the objective of this study was to appraise the effect of different harvest stages on important yield and yield related traits of yams from Southwest Ethiopia. Two landraces, Woko and Welmeka were harvested at six stages at Jimma...

Information on harvest stages on yams is prerequisite for recommendations to growers and food processors. Consequently, the objective of this study was to appraise the effect of different harvest stages on important yield and yield related traits of yams from Southwest Ethiopia. Two landraces, Woko and Welmeka were harvested at six stages at Jimma...

'Tafach Shenkora' and 'Kay Shenkora' sugarcane (Saccharum spp.) are the names assigned to sugarcane varieties with accession numbers Acc. 43 and Acc. 139, respectively. They were developed by Sugar Corporation, Research and Development and were registered and released in June 2019 by the National Variety Releasing Committee of Ethiopia to growers i...

Low-moisture availability is one of the major causes for grain yield reduction in dry land areas. Twenty-four open pollinated maize genotypes were evaluated in a randomized complete block design at the main research station of Jigjiga Pastoral and Agricultural Research Centre to assess performance, variability and heritabilities of important traits...

Seventeen sesame genotypes were tested at ten environments in Tigray, Northern Ethiopia during 2014-2015 cropping seasons. Randomized Complete Block Designs (RCBD) with three replications was used in the study. According to the GGE bi-plot different sesame growing environments grouped into two mega-environments: The first mega-environment contained...

Though breeding for drought resistance is complicated due to the many processes involved and their interaction with the environment, availability of precise, cheap and easy to apply selection tool is critical. The present study quantified the response of potato genotypes to drought and identified potential morpho-physiological traits that are usefu...

A field experiment was conducted to identify drought tolerant, high yielding and stable tef genotypes using drought tolerance indices. Sixty-four tef genotypes were evaluated under drought and non-stress conditions using “8 × 8 simple lattice design” with two replications at Debre-Zeit Agricultural Research Center. Drought tolerance indices includi...

Sorghum [Sorghum bicolor (L.) Moench]’s production and productivity is by far lower than its potential. Knowledge on the extent and pattern of genetic variability is prerequisite important for generating superior varieties of different objectives for sorghum improvement. Therefore, this research was conducted to quantify genetic variability, herita...

The information on the nature and magnitude of genes controlling the resistance to net blotch and scald in barley is useful in resistance breeding. Thus, field experiment was conducted at Holetta, Ethiopia in 2015 on barley using six basic generations of () which was derived from 'HB42'x'Sabini' parental cross which were evaluated in RCB design wit...

Drought is among the major constraints in mung bean production. The main goal of the current study was to investigate the response of 60 mung bean genotypes to two constrasting moisture regimes using diverse indices. The experiment was made at Jinka Agricultural Research Center using a 6 x 10 alpha lattice design replicated twice. Correlation analy...

Yam (Dioscorea spp.) is one of the most important food security and economical crop in tropical Africa. In Ethiopia, it has been cultivated in densely populated and high rainfall areas to fill seasonal food and economic gaps. To assess the diversity, management and spatial distribution of yam landraces in major growing areas, a survey was conducted...

An experiment was conducted to investigate an in vitro somatic embryogenesis and subsequent plantlet regeneration in KUWE (G1) and 223098 (G2) genotypes of anchote. Concentrations and combinations of 2, 4-Dichlorophenoxyacetic acid (2,4-D) and 6-Benzylamimopurine (BAP) were evaluated for embryogenic callus induction. Levels of BAP, singly and in co...

Ethiop. J. Agric. Sci. 29(3)89-104 (2019) Genetic Diversity of Ethiopian Cowpea [Vigna unguiculata (L) Walp] Genotypes Using Multivariate Analyses Tesfaye Walle 1*, Firew Mekbib2, Berhanu Amsalu3 and Melaku Gedil4 1Department of Plant Sciences, Wolkite University, Wolkite, Ethiopia; 2School of Plant Sciences, Haramaya University, Dire Dawa, Ethi...

The procedures in the selection of good performing and stable genotypes are complicated by the phenomenon of genotype by environment interaction to recommend new sorghum genotypes for different environments. Therefore, 49 genotypes (hybrids + varieties) were tested at five locations in a simple lattice design with two replications during the 2016 m...

In breeding for drought tolerance, availability of precise, cheap and easy to apply selection tool is critical. The aim of the present study was to identify potential screening tools that are useful for selection of drought tolerant genotypes in potato and select drought resistant potato genotypes. The study assessed sixty clones arranged in a 10×6...

Scald and net blotch are major foliar diseases of barley causing high yield losses worldwide including Ethiopia. Development of varieties with double resistance is an effective approach of managing both diseases. However, the genetic background of the barley parents was not studied for future resistance breeding. Thus, the objective of the study wa...

Chickpea is one of the most cultivated grain legumes in Ethiopia for grain production and amelioration of soil fertility through N-fixation, and income generation. This study was conducted to estimate the heritability and correlation analysis of N-fixation in chickpea. Six F1 crosses were evaluated in lath house during the year 2014/15 using random...

The eastern Africa region, Ethiopia and its surroundings, is considered as the center of origin and diversity for sorghum, and has contributed to global sorghum genetic improvement. The germplasm from this region harbors enormous genetic variation for various traits but little is known regarding the genetic architecture of most traits. Here, 1425 E...

Yams(Dioscoreaspp.)are food security and socioeconomic importance crop indifferent areas of the world. Although it is cultivated and consumed in sub-Saharan Africa, still neglected by scientific research and development program in many countries including in Ethiopia. To fill in the knowledge gaps, the present study conducted at Jimma Agricultural...

Post-flowering drought is the most yield limiting factor in sorghum production. The objectives of the study were to identify post-flowering drought tolerance high yielding sorghum genotypes and to compare efficiency of different indices to select for drought tolerance genotypes. Twenty-three early maturing sorghum genotypes were evaluated using com...

Twenty-two bread wheat varieties were tested at six locations of eastern Amhara region. The experiment was laid-out using Randomized Complete Block (RCB) design and replicated three times with the objective of estimating the magnitude of Genotype by Environment (GE) interactions for grain yield and stability of bread wheat genotypes. Individual env...

Knowledge of the sources and magnitude of variability among genotypes plays a pivotal role in any crop improvement program to maximize gains from selection. This experiment was conducted at Bako Agricultural Research Center in 2011 cropping season with the objective of studying and estimating the extent of genetic variability in common bean genotyp...

Background and Objectives: Barley is one the most important crops worldwide mainly for food, feed and drinks including Ethiopia. The aim of this study was to assess the combining ability of barley parents and estimate the inheritance pattern for some agro-morphological traits for future breeding. Materials and Methods: This study was carried out on...

Fourteen common bean (Phaseolus vlgaris L.) varieties that were released in Ethiopia from 1997 to 2012 as large-seeded food type common bean varieties were evaluated with the specific objectives to: (1) estimate the genetic progress made in 15 years of common bean breeding in Ethiopia; (2) assess changes in associated traits in the genetic improvem...

Drought is one of the major abiotic constraints seriously influencing bread wheat (Triticum aestivum L.) genotype production in Ethiopia. Genetic resources and selection methodologies are among the prerequisites to improve the efficiency of breeding for drought tolerance. The objectives of this study were to determine the principal selection indice...

A study was conducted to appraise the effect of different harvest stages on biochemical composition of yams in Southwest Ethiopia. Two landraces, Woko and Welmeka harvested at six different stages at Jimma Agricultural Research Center by using randomized complete block design with three replications. Data on 14 biochemical traits from aerial bulbil...

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 conc...

Diversity has not been exhaustively studied in the Ethiopian garden cress (Lepidium sativum L.). Therefore, the objective of the present study was to determine the genetic diversity among garden cress genotypes using microsatellite or simple sequence repeat (SSR) markers. One hundred twelve garden cress genotypes collected from diverse growing regi...