17 research outputs found
Effet de la p'eriode de pollinisation manuelle sur la fructification de l'igname (Dioscorea rotundata Poir; Dioscoreaceae) en Cote d'Ivoire: Effect of the manual pollination period on the fruiting of yams (Dioscorea rotundata Poir; Dioscoreaceae) in Ivory Coast
No full textD. rotundata is the most popular species among consumers in Côte d'Ivoire. However, its production is stagnating due to the many constraints associated with its cultivation, particularly virus diseases. The use of improved varieties from sexual reproduction could effectively contribute to sustainable production. This work aimed to evaluate the crossing period in order to increase fruiting rates in this species. A total of 28 intra-specific crosses were carried out using 4 female and 7 male clones from the CNRA-Bouaké yam collection. Two time slots H1 (from 7:30 to 11:00) and H2 (from 11:00 to 13:30), selected for crossings, were compared to determine the optimal pollination period. Out of 30061 pollinated flowers, 2249 fruits were obtained i.e 7.48% with a variation range from 1.16 to 51.06% as the average fruiting rate depending on the clone combinations. Fruiting rates were significantly higher in H1 (8.53%) compared to 6.22% in H2. The female clone, Cnraigr09/00001, has recorded the highest fruiting rate especially in H1 (18.10%). Similarly, the male clones CIVCDr072, TDr00/00380 and TDr95/18555 have got the highest rates in H1 with 9.3; 9.8 and 16.3% respectively compared to those in H2. The couple Cnraigr09/00001 x TDr99/18555 recorded fruiting rates of 35.41% and 8.78% statistically different at schedule H1 and H2, respectively. A strong variation in the fruiting rate in favor of the H1 schedule was obtained between the different clone combinations.L’igname D. rotundata est l’espèce la plus appréciée des consommateurs en Côte d’Ivoire. Cependant, sa production stagne du fait des nombreuses contraintes liées à sa culture notamment les viroses. L’utilisation de variétés améliorées issues de reproduction sexuelle, pourrait contribuer efficacement à une production durable. Ce travail visait à évaluer la période des croisements afin d’accroitre les taux de fructifications chez cette espèce. Au total, 28 croisements intra-spécifiques ont été réalisés en utilisant 4 clones femelles et 7 clones mâles issus de la collection d’ignames du CNRA-Bouaké. Deux plages horaires H1 (de 7h30 à 11h) et H2 (de 11h à 13h30), retenues pour les croisements ont été comparées en vue de déterminer la période optimale de pollinisation. Sur 30061 fleurs pollinisées, 2249 fruits ont été obtenus soit 7,48% avec une variation allant de 1,16 à 51,06% de taux moyen de fructification selon les combinaisons de clones. Les taux de fructifications ont été significativement plus élevés en H1 (8,53%) contre 6,22% en H2. Le clone femelle, Cnraigr09/00001 a eu le taux de fructification le plus élevé et spécialement en H1 (18,10%). De même les clones mâles CIVCDr072, TDr00/00380 et TDr95/18555 ont eu les meilleurs taux en H1 avec respectivement 9,3 ; 9,8 et 16,3% par rapport à H2. Le couple Cnraigr09/00001 x TDr99/18555 a donné des taux de fructifications 35,41% et 8,78% statistiquement différents aux horaires H1 et H2, respectivement. Une forte variation du taux de fructification en faveur de l’horaire H1 a été obtenue entre les différentes combinaisons de clones.
L’igname D. rotundata est l’espèce la plus appréciée des consommateurs en Côte d’Ivoire. Cependant, sa production stagne du fait des nombreuses contraintes liées à sa culture notamment les viroses. L’utilisation de variétés améliorées issues de reproduction sexuelle, pourrait contribuer efficacement à une production durable. Ce travail visait à évaluer la période des croisements afin d’accroitre les taux de fructifications chez cette espèce. Au total, 28 croisements intra-spécifiques ont été réalisés en utilisant 4 clones femelles et 7 clones mâles issus de la collection d’ignames du CNRA-Bouaké. Deux plages horaires H1 (de 7h30 à 11h) et H2 (de 11h à 13h30), retenues pour les croisements ont été comparées en vue de déterminer la période optimale de pollinisation. Sur 30061 fleurs pollinisées, 2249 fruits ont été obtenus soit 7,48% avec une variation allant de 1,16 à 51,06% de taux moyen de fructification selon les combinaisons de clones. Les taux de fructifications ont été significativement plus élevés en H1 (8,53%) contre 6,22% en H2. Le clone femelle, Cnraigr09/00001 a eu le taux de fructification le plus élevé et spécialement en H1 (18,10%). De même les clones mâles CIVCDr072, TDr00/00380 et TDr95/18555 ont eu les meilleurs taux en H1 avec respectivement 9,3 ; 9,8 et 16,3% par rapport à H2. Le couple Cnraigr09/00001 x TDr99/18555 a donné des taux de fructifications 35,41% et 8,78% statistiquement différents aux horaires H1 et H2, respectivement. Une forte variation du taux de fructification en faveur de l’horaire H1 a été obtenue entre les différentes combinaisons de clones
Diversity of water yam (Dioscorea alata L.) accessions from Cote d'Ivoire based on SNP markers and agronomic traits
No full textDioscorea alata (L.), also referred to as water, winged, or greater yam, is one of the most economically important staple food crops in tropical and subtropical areas. In Côte d’Ivoire, it represents, along with other yam species, the largest food crop and significantly contributes to food security. However, studies focusing on better understanding the structure and extent of genetic diversity among D. alata accessions, using molecular and phenotypic traits, are limited. This study was, therefore, conducted to assess the pattern of genetic variability in a set of 188 D. alata accessions from the National Agronomic Research Centre (CNRA) genebank using 11,722 SNP markers (generated by the Diversity Arrays Technology) and nine agronomic traits. Phylogenetic analyses using hierarchical clustering, admixture, kinship, and Discriminant analysis of principal component (DAPC) all assigned the accessions into four main clusters. Genetic diversity assessment using molecular-based SNP markers showed a high proportion of polymorphic SNPs (87.81%). The analysis of molecular variance (AMOVA) showed low molecular variability within genetic groups. In addition, the agronomic traits evaluated for two years in field conditions showed a high heritability and high variability among D. alata accessions. This study provides insights into the genetic diversity among accessions in the CNRA genebank and opens an avenue for sustainable resource management and the identification of promising parental clones for water yam breeding programs in Côte d’Ivoire
Assessment of water yam (Dioscorea alata L.) landrace varieties for resistance to anthracnose disease
No full textYam anthracnose disease (YAD), caused by the fungus Colletotrichum gloeosporioides Penz, is the most damaging fungal disease of Dioscorea alata yam worldwide. Local yam varieties, which sustain Côte d'Ivoire’s farmers and other end-users livelihoods, are highly susceptible to this pathogen. Thus, there is a need for developing new yam cultivars to sustain yam production in Côte d'Ivoire. To achieve such objective, identifying and selecting sources of resistance within the existing germplasm is crucial prior to the establishment of a breeding program. This study, therefore, aimed at determining the field resistance to C. gloeosporioides of 115 D. alata landrace varieties. Field experiments were conducted at the Research Station for Food Crops (SRCV) of the CNRA, Bouaké City, in Central Côte d'Ivoire, for three growing seasons. Results showed that symptoms of the anthracnose disease were more noticeable four months after planting (P3): high disease severity and incidence scores. At this period, ‘Betebete’ group (DSS = 3.40 and DI = 99.81%) was the most sensitive to anthracnose disease across years. In contrast, ‘Brazo’ (DSS = 2.24 and DI = 94.81%) and ‘Florido’ (DSS = 2.59 and DI = 97.23%) groups were the least sensitive. This finding indicates that local yam accessions from Côte d’Ivoire have different sensitivity levels to anthracnose disease attacks. Therefore, the genetic diversity from this work should be further exploited by yam breeding and genetic improvement programs for developing cultivars, combining resistance to YAD, high yield potential, and superior tuber quality to meet producers and consumers’ needs
Trends in genetic gain for yam in the IITA breeding program
No full textMonitoring genetic gain is crucial to ensure breeding programs' effectiveness and identify potential challenges and areas for their improvement. Our study provides a first overview of the trends in genetic gain for tuber yield and disease resistance traits in the IITA's (International Institute of Tropical Agriculture) yam breeding program. We used historical data (2010–2022) from multiple generations of past breeding cycles evaluated at 31 sites in the white Guinea yam (Dioscorea rotundata Poir) breeding pipeline and 28 sites in the water yam (Dioscorea alata L.) breeding pipeline of IITA and its national partners in West Africa. Our result shows positive genetic trends in fresh tuber yield while recording a gain of 1.38% or 99.17 kg ha−1 per year in the white Guinea yam and 2.18% or 252.41 kg ha−1 per year in the water yam breeding pipelines. Genetic trends for virus and anthracnose resistance were in the desired direction but negligible in white Guinea yam, while significant for virus and nonsignificant for anthracnose resistance in water yam. Our findings indicate that while the breeding program has succeeded in enhancing tuber yield, post-harvest tuber dry matter content and disease resistance (yam mosaic virus and anthracnose) did not follow a similar trend in the material being developed. This implies that the yam breeding program needs to strike a balance between various traits, ensuring that increased yield does not come at a cost to food quality or disease resistance. Our results highlight the importance of continually monitoring and assessing the performance of a breeding program and making informed decisions about which traits to focus on for future improvement
A model of job satisfaction of nurses: a reflection of nurses' working lives in Mainland China
No full textAim. This paper is a report of a study exploring nurses' views and experience regarding their working lives in Mainland China. Background. The widespread nursing shortage and high turnover has become a global issue. Job satisfaction among nurses is a key factor in nurse turnover. Although several models of job satisfaction have been suggested in Western countries, these require further development and testing in Mainland China, where the social context of the labour market is different. Method. A survey design using questionnaires was adopted. A total of 512 hospital nurses in Beijing participated in the study in 2004, representing a response rate of 81%. Findings. There was a negative relationship between nurses' job satisfaction and intention to leave their current hospitals, which was mediated by age (P < 0.05). About 40% of the variance in job satisfaction could be explained by the set of independent variables including organizational commitment, occupational stress, professional commitment, role conflict, role ambiguity, educational level, age and working years (R-2 = 0.396). Organizational commitment had the strongest impact on job satisfaction, which explained 31.3% of the variance in this, followed by occupational stress and role conflict (5.5% and 1.9% respectively). In addition, both nurses' role perception and actual role content influenced job satisfaction as well as occupational stress, role conflict and role ambiguity (P < 0.05). Nurses' educational level was also a factor related to role perception, professional commitment and role conflict (P < 0.05). Conclusion. Nurses' job satisfaction could be increased through promoting organizational and professional commitment and reducing occupational stress, role conflict and role ambiguity.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000246685000007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701NursingSCI(E)PubMedSSCI37ARTICLE5468-4795
JOURNAL OF HUMAN KINETICS & HEALTH EDUCATION PEDAGOGY: SPORTS VIOLENCE MANAGEMENT AND SPORTS DEVELOPMENT IN PUBLIC SECONDARY SCHOOLS IN DELTA NORTH SENATORIAL DISTRICT, DELTA STATE
No full textEDITORIAL
The Journal of Human Kinetics and Health Education Pedagogy (JOKHED) is an official journal of the Department of Human Kinetics and Health Education, Ekiti State University, Ado-Ekiti. With the consistent patronage by various researchers and the reading public, we are compelled to publish this latest edition of the Journal –Vol. 5, No 1, 2023,
The Editorial Board deployed appropriate logistics to screen and select articles with high quality and in conformity with the international best practices. Therefore, the articles in the journal are double blind peer-reviewed in line with international standard.
This edition contains the publication of articles from diverse segments of Sport for Fitness, Health, Wellness and Education pedagogy. We shall not relent in our avowed commitment to always put the journal in academic domain at least two times a year.
The Editorial Board appreciates the efforts of all the contributors as well as assessors towards the successful production of this edition. It is our hope that researchers, scholars and readers will continue to subscribe to the journal for its continuity. We recommend this journal to all.
Professor Patrick Oladepo OYENIYI,
Editor- In- Chie
JOURNAL OF HUMAN KINETICS & HEALTH EDUCATION PEDAGOGY: Sports Violence Management and Sports Development in Public Secondary Schools in Delta North Senatorial District, Delta State
No full textEDITORIAL
The Journal of Human Kinetics and Health Education Pedagogy (JOKHED) is an official journal of the Department of Human Kinetics and Health Education, Ekiti State University, Ado-Ekiti. With the consistent patronage by various researchers and the reading public, we are compelled to publish this latest edition of the Journal –Vol. 5, No 1, 2023,
The Editorial Board deployed appropriate logistics to screen and select articles with high quality and in conformity with the international best practices. Therefore, the articles in the journal are double blind peer-reviewed in line with international standard.
This edition contains the publication of articles from diverse segments of Sport for Fitness, Health, Wellness and Education pedagogy. We shall not relent in our avowed commitment to always put the journal in academic domain at least two times a year.
The Editorial Board appreciates the efforts of all the contributors as well as assessors towards the successful production of this edition. It is our hope that researchers, scholars and readers will continue to subscribe to the journal for its continuity. We recommend this journal to all.
Professor Patrick Oladepo OYENIYI,
Editor- In- Chief
 
JOURNAL OF HUMAN KINETICS AND HEALTH EDUCATION PEDAGOGY: Sports Violence Management and Sports Development in Public Secondary Schools in Delta North Senatorial District, Delta State
No full textEDITORIAL
The Journal of Human Kinetics and Health Education Pedagogy (JOKHED) is an official journal of the Department of Human Kinetics and Health Education, Ekiti State University, Ado-Ekiti. With the consistent patronage by various researchers and the reading public, we are compelled to publish this latest edition of the Journal –Vol. 5, No 1, 2023,
The Editorial Board deployed appropriate logistics to screen and select articles with high quality and in conformity with the international best practices. Therefore, the articles in the journal are double blind peer-reviewed in line with international standard.
This edition contains the publication of articles from diverse segments of Sport for Fitness, Health, Wellness and Education pedagogy. We shall not relent in our avowed commitment to always put the journal in academic domain at least two times a year.
The Editorial Board appreciates the efforts of all the contributors as well as assessors towards the successful production of this edition. It is our hope that researchers, scholars and readers will continue to subscribe to the journal for its continuity. We recommend this journal to all.
Professor Patrick Oladepo OYENIYI,
Editor- In- Chief
 
The Global Soil Mycobiome consortium dataset for boosting fungal diversity research.
No full textFungi are highly important biotic components of terrestrial ecosystems, but we still have a very limited understanding about their diversity and distribution. This data article releases a global soil fungal dataset of the Global Soil Mycobiome consortium (GSMc) to boost further research in fungal diversity, biogeography and macroecology. The dataset comprises 722,682 fungal operational taxonomic units (OTUs) derived from PacBio sequencing of full-length ITS and 18S-V9 variable regions from 3200 plots in 108 countries on all continents. The plots are supplied with geographical and edaphic metadata. The OTUs are taxonomically and functionally assigned to guilds and other functional groups. The entire dataset has been corrected by excluding chimeras, index-switch artefacts and potential contamination. The dataset is more inclusive in terms of geographical breadth and phylogenetic diversity of fungi than previously published data. The GSMc dataset is available over the PlutoF repository
Pooled analysis of WHO Surgical Safety Checklist use and mortality after emergency laparotomy
No full textBackground
The World Health Organization (WHO) Surgical Safety Checklist has fostered safe practice for 10 years, yet its place in emergency surgery has not been assessed on a global scale. The aim of this study was to evaluate reported checklist use in emergency settings and examine the relationship with perioperative mortality in patients who had emergency laparotomy.
Methods
In two multinational cohort studies, adults undergoing emergency laparotomy were compared with those having elective gastrointestinal surgery. Relationships between reported checklist use and mortality were determined using multivariable logistic regression and bootstrapped simulation.
Results
Of 12 296 patients included from 76 countries, 4843 underwent emergency laparotomy. After adjusting for patient and disease factors, checklist use before emergency laparotomy was more common in countries with a high Human Development Index (HDI) (2455 of 2741, 89·6 per cent) compared with that in countries with a middle (753 of 1242, 60·6 per cent; odds ratio (OR) 0·17, 95 per cent c.i. 0·14 to 0·21, P < 0·001) or low (363 of 860, 42·2 per cent; OR 0·08, 0·07 to 0·10, P < 0·001) HDI. Checklist use was less common in elective surgery than for emergency laparotomy in high‐HDI countries (risk difference −9·4 (95 per cent c.i. −11·9 to −6·9) per cent; P < 0·001), but the relationship was reversed in low‐HDI countries (+12·1 (+7·0 to +17·3) per cent; P < 0·001). In multivariable models, checklist use was associated with a lower 30‐day perioperative mortality (OR 0·60, 0·50 to 0·73; P < 0·001). The greatest absolute benefit was seen for emergency surgery in low‐ and middle‐HDI countries.
Conclusion
Checklist use in emergency laparotomy was associated with a significantly lower perioperative mortality rate. Checklist use in low‐HDI countries was half that in high‐HDI countries
