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Kebede Taye Desta,최유미,이정윤,이석영,신명재,Xiaohan Wang,윤혜명 한국작물학회 2023 한국작물학회지 Vol.68 No.1
Adzuki beans have gained popularity in recent years due to their health benefits. Breeding of Adzuki beans is less favorable than with other legumes due to low genetic diversity. This study aimed to evaluate the genetic diversity of 252 adzuki bean germplasms from China, Japan, and Korea using 18 agro-morphological parameters and comparing their performance to three prominent Korean cultivars: Geomguseul, Arari, and Chungjupat. Leaf shape, pod color, and seed coat color were among the qualitative traits that showed wide variations. The quantitative variables also showed wide variations among adzuki bean germplasms. Although there was no significant difference (p < 0.05), the average rate of germination declined in the order of Korean (91.44%) > Chinese (91.31%) > Japanese (87.47%) adzuki beans. Chinese adzuki beans needed fewer days to flower (DF, 58.22 days) and days to mature (DM, 107.13 days), which varied significantly compared to the Korean and Japanese adzuki beans (p < 0.05). The average number of pods per plant (PPP) and one-hundred seeds weight (HSW) were higher in Japanese adzuki beans compared to the Korean and Chinese adzuki beans although the variation of each was not significant. Almost 29.76% of the accessions had early-blooming flowers, 3.97% were premature, 21.43% produced more PPP, and 3.97% yielded more SPP compared to control cultivars. Results of hierarchical cluster and principal component analyses revealed three clusters with significant variation in all quantitative variables except for RG (p < 0.05). The key factors in multivariate analyses were DF, DM, and HSW. Our study investigated the genetic diversity of adzuki bean accessions and identified ten early maturing and ten high PPP-yielding accessions. Our findings would help farmers and breeders to select the top-performing accessions that can provide them with various options.
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Kebede Taye Desta,윤혜명(Hyemyeong Yoon),신명재(Myoung-Jae Shin),이수경(Sukyeung Lee),Xiaohan Wang,최유미(Yu-Mi Choi),전영아(Young-ah Jeon),주영광(YoungKwang Ju),이정윤(JungYoon Yi) 한국작물학회 2023 한국작물학회지 Vol.68 No.3
Seed color is controlled by several genes and is a key trait in determining the metabolite content and biological activities of legume genotypes. In this study, 296 adzuki bean accessions, including 159 grey, 99 red, and 38 white adzuki beans, were grown in Korea. Variations in total phenolic content (TPC), total saponin content (TSC), DPPH• scavenging activity, ABTS•+ scavenging activity, and ferric reducing antioxidant power (FRAP) were assessed and were reported to be in the ranges of 1.52- 8.24 mg GAE/g, 14.36-114.22 mg DE/g, 0.23-12.84 mg AAE/g, 1.05-17.66 mg TE/g, and 0.59-13.14 mg AAE/g, respectively, with a wide variation across adzuki beans. Except for DPPH• scavenging activity, the average values declined in the order gray > red > white adzuki beans, each demonstrating a significant variation (p < 0.05). White adzuki beans, which showed low metabolite content and antioxidant activity, were clearly separated from the gray and red genotypes using principal component and hierarchical cluster analyses. Moreover, TPC, TSC, and antioxidant activities were strongly correlated, regardless of seed color. Overall, the diversity of the TPC, TSC, and antioxidant activity in a broad population of adzuki bean genotypes was determined. Furthermore, this study found that seed color variation in adzuki beans had a significant effect on the metabolite content and antioxidant activity. Superior accessions with high levels of TPC, TSC, and antioxidant activity were also discovered and could be used for functional plant breeding and human consumption. The findings of this study may be useful for understanding the relationship between seed coat color and metabolite concentration in adzuki beans, paving the way for molecular-level analyses.
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Kebede Habtegiorgis,Aynalem Haile,Manzoor Ahmed Kirmani,Tesfaye Getachew 한국동물유전육종학회 2020 한국동물유전육종학회지 Vol.4 No.2
The objective of this study was to estimate the genetic parameters, genetic trends and inbreeding levels for growth traits of Doyogena sheep managed under community-based breeding program. Records used in the study were collected over a period of 6 years (2013-2018).A total of 2990 birth weight (BWT), 2121 three-month weight (WWT), 1303 six month weight (6WT), 2098 average daily gain from birth to weaning (ADG0-3), 1287 average daily gain from weaning to 6-month age (ADG3-6), and 1293 average daily gain from birth to 6-month age (ADG0-6) were used. Variance components and genetic parameters were estimated with univariate analysis by fitting restricted maximum likelihood methods using WOMBAT software. Six different animal models were fitted by including or excluding maternal effects. Multivariate analysis was applied for correlation estimates. The overall least squares means ± standard errors (LSM±SE) of lamb body weight for BWT, WWT and 6WT were 3.05±0.02 kg; 14.8±2.49 kg and 22.0±0.22 kg respectively. The overall LSM±SE of ADG0-3, ADG3-6, and ADG0-6 in gram were 130.4±2.27, 80.6±3.62 and 106.2±1.7 respectively. Based on the best fitted univariate models, direct heritability estimates, for BWT, WWT, 6WT, ADG0-3, ADG3-6 and ADG0-6 were 0.33±0.06, 0.31±0.06, 0.14±0.06, 0.13±0.04, 0.11±0.07, and 0.023±0.05 respectively. The maternal heritability estimates for BWT and WWT were 0.24±0.12 and 0.6±0.07 respectively. BWT has weak genetic correlation with all other traits while genetic correlations between WWT and 6WT was higher (r=0.52±0.09). Genetic changes over the selection period was s0.00085 kg,0.30 kg,0.15 kg, 2.56gm, -0.37gm,0.09 gm, for BWT, WWT, 6WT, ADG0-3, ADG3-6, and ADG0-6, respectively. Genetic parameter estimates and genetic trend over years suggested that the genetic selection can lead to improvement of Doyogena sheep breed under the ongoing community-based breeding programs. Thus, continuation of selection therefore recommended for bringing further improvement.
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Kebede G. Mekete,안성희 한국분석과학회 2021 학술대회논문집 Vol.2021 No.11
Fenitrothion and malathion are organophosphorus pesticides which are used world widely even though they are regulated in many nations and organizations. Our laboratory has employed isotope dilution mass spectrometyr (IDMS) as a reference method for accurate determination of these analytes in kimchi cabbage and strawberry. In this presentation, two sample preparation method, SPE and QuEChERS, were compared for selection of the appropriate sample clean-up method. In additions, two gas chromatography columns with different polarity were compared for separation. To develop the ID-GC/MS/MS method, the scan mode and product ion mode MS spectrum were observed for appropriate MS/MS channel. The selected MS channels were at m/z 277→260 for fenitrothion and at m/z 173→99 for malathion. The results were compared with fortified values (10 μg/kg, 25 μg/kg, 100 μg/kg, and 250 μg/kg) and measured values by the selected method and conditions. The method will be applied to the certified reference materials provided by KRISS.
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Gezahagn Kebede,Fekede Feyissa,Getnet Assefa,Mengistu Alemayehu,Alemayehu Mengistu 한국작물학회 2020 Journal of crop science and biotechnology Vol.23 No.3
Vetch is an annual forage legume and accessions of its species performed diff erently under diff erent soil conditions. Twenty accessions of fi ve vetch species were evaluated for their agronomical diff erences at Holetta and Ginchi in the central highlands of Ethiopia. The rate of DM accumulation was similar during the initial growth stage. However, after the second sampling (74 DAS), aerial DM accumulation varied widely across the testing sites due to the diff erence in temperature, rainfall, and soil fertility conditions. The average stretched plant height was higher at Ginchi compared to Holetta, which could be attributed to higher and extended rainfall and favorable growing conditions during the experimental period. In addition to genetic variability, soil fertility and environmental conditions could also contribute to the diff erence in height. On average, about 10 and 20 more days were required to harvest forage and seed yield, respectively, at Ginchi compared to Holetta. Days to forage harvest ranged from 80.7 to 113.0 and 94.3 to 126.0 days after the emergence of the seedlings at Holetta and Ginchi, respectively. The diff erence in maturity is an important agronomic trait to select companion crops for maximum production. The higher biomass production rate was recorded at Ginchi than in Holetta. Accessions of early maturing vetch species had a comparatively higher biomass production rate, while late-maturing accessions had lower biomass production rates at both locations. Intermediate-to-late-maturing accessions of vetch species gave relatively better forage DM yield than early maturing accessions at both locations. The highest grain-fi lling period was recorded for accession 2424 ( Vicia villosa ) at Holetta and accession 64266 ( Vicia sativa ) at Ginchi. Vetch accessions showed higher seed yield and thousand seed weight at Ginchi than Holetta. The 20 accessions of vetch species were grouped into three clusters based on major measured parameters.
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Adaptability and Stability Analysis of Groundnut Genotypes Using AMMI Model and GGE-biplot
Amare Kebede B,Adisu Getahun 한국작물학회 2017 Journal of crop science and biotechnology Vol.20 No.5
Unpredictable rainfall, variations in farm inputs, crop-diseases, and the inherent potential of genotypes are among the major factors for low and variable crop yield. Fourteen elite groundnut genotypes were examined in 14 environments to analyze adaptability and stability of genotypes, and identify mega-environments if they exist. Additive main effect and multiplicative interaction (AMMI) model, cultivar-superiority measure, and genotype plus genotype-by-environment (GGE) biplot analysis were used for data analysis. The environment (69.8%) and genotype-by-environment interaction (GEI) effects (21.4%) were dominating the genotypic effect (8.8%). The GEI was significant (P < 0.01), and two distinct environments (mega-environments) were identified, suggesting separate national groundnut breeding strategies for Babile and Pawe. ICGV-94100 and ICGV-97156 were stable and had the highest-yield at Babile and Pawe, respectively. The higher heritability value was recorded in more homogeneous and favorable environments, indicating the genetic potential of groundnut genotypes were better attained in more homogeneous and favorable environments. AMMI model, cultivar-superiority measure, and GGE biplots were helpful methodologies and complemented each other to evaluate the adaptability and stability of groundnut genotypes in diverse environments.
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Mesfin Kebede Kassa,Rajeshkumar Selvaraj,Ananda Babu Arumugam 한국섬유공학회 2022 Fibers and polymers Vol.23 No.12
This paper presents the progressive failure analysis of carbon nano tubes/polymer/fiber reinforced laminatedcurved composite panels under transverse pressure load distributed over the panel surface for various taper configurations. The ply-by-ply stresses were computed using the finite element method with displacement fields derived based on higherorder shear deformation theory (HSDT). The first ply failure was predicted based on Tsai-Wu failure criterion, and thestiffness degradation method were employed to track post-failure behavior and failure progression. The verification of thecurrent method is performed by comparing the results of the FE analysis with the numerical results available in literature andexperimental tests. Finally, various parametric analysis were performed to investigate the influence of MWCNTsconcentration, taper configurations and curved geometries on the failure characteristics. It was noticed that the failureresistance of the panel significantly enhanced with the addition of CNT filler, regardless of the considered taperconfigurations. It was also noticed that the hyperbolic and cylindrical geometries have the highest and lowest overall stiffnessand strength. It was observed that the taper configuration TC-3 results a higher LPF load among the other taperconfigurations for all the considered curved geometries. Finally, the present work could be used as a guide to study the failurecharacteristics of CNT reinforced laminated tapered curved composite panels, which finds many application in finds manyapplications in windmill, turbine and helicopter blades.
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Manuscript Submission Invitations from ‘Predatory Journals’: What Should Authors Do?
Mihiretu Kebede,Anna E. Schmaus-Klughammer,Brook Tesfaye Tekle 대한의학회 2017 Journal of Korean medical science Vol.32 No.5
Press freedom and worldwide internet access have opened ample opportunity for a staggering number of poor open access journals and junk publishers to emerge. Dubious publishers are abusing and camouflaging the golden open access model. In 2012, Jeffery Beall shed light on the predatory journals (as he preferred to call them) and the threat to open access scientific publication. Publishing in predatory journals is continuing to be a major threat for the development of science in developing countries. The authors of this article proposed solutions and outline a fresh perspective to help authors avoid publishing in predatory journals.
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