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High-Yielding and Carotenoid-Rich Clones Identification among Thirty-One Cassava Clones with Colored Flesh

American Journal of Plant Sciences 2021年第9期12卷 1445-1458页

作者： N’Zue Boni Coulibaly Idriss Koudous Koffi Kouamé Guillaume Essis brice Sidoine dibi konan evrard brice Sie Raoul Sylvère Centre National de Recherche Agronomique (CNRA) Baouké C&#244 te d’Ivoire Université Nangui Abrogoua UFR Sciences de la Nature Unité de Phytotechnie et Amélioration Génétique Abidjan 02 C&#244te d’Ivoire

Cassava is the second most important food crop produced and consumed in Côte d’Ivoire, after yam. White-fleshed varieties, which are low in total carotenoids, are widespread, while coloured-fleshed varieties (yellow to orange), carotenoid-rich, are rare. However, the consumption of carotenoid-rich cassava varieties could help to alleviate health problems related to vitamin A deficiency. This study aims to identify high agronomic performance, carotenoid-rich and versatile cassava varieties among 31 clones introduced from IITA. They were compared to three controls, Bocou2, Yacé and Bonou2, according to agronomic and technological parameters. Results found that out of the 31 clones, six (I082425, I084157, I084563, I085894, I083774 and I070520) were more productive than the control Bocou2 (46.01 ± 14.88 t·ha-1);the clone I083774 had the highest yield (55.88 ± 6.16 t·ha-1). Twenty-one clones had dry matter contents, ranging from 37% to 41%, significantly similar to Yacé control (42.70%). Thirteen clones had highest total carotenoid contents than the control Bocou2. Clones I084157 and I082425 recorded the highest total carotenoid contents with 17.57 ± 1.92 and 18.39 ± 1.19 μg·g-1 respectively. Overall 31 tested clones were fibrous to varying degrees while 27 clones had mild or neutral post-cooking flavours and 17 clones had poor cooking. The clone I084157 is the best compromise of agronomic and technological desired traits.

关键词： Manihot esculenta Carotenoid-Rich Coloured-Flesh Cassava High Yied Provitamin A

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Effect of Plant Growth Hormones and Liquid Fertilizer on Rooting and Tuberization of Yam (<i>Dioscorea rotundata</i>Poir.) Vine Cuttings

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American Journal of Plant Sciences 2019年第10期10卷 1903-1920页

作者： dibi konan evrard brice Kouakou Amani Michel Amari Ler-Ogn Dadé Georges Elisée Brouth Lorng Jean Bernard Dossou-Aminon Innocent Essis brice Sidoine N’zue Boni Dick Acka Emmanuel Root and Tuber Crops Program Food Crops Research Station National Centre for Agronomic Research-CNRA Bouake Cote d’Ivoire Laboratory of Plant Physiology Biosciences Training and Research Unit Felix Houphouet-Boigny University Abidjan Cote d’Ivoire Faculty of Science and Technology of Dassa University of Abomey-Calavi Abomey-Calavi Benin

Vine cutting is an effective solution to solve the problem of seed availability in yam cultivation. This study was conducted to improve the recovery and rooting rate of vine cuttings of Dioscorea rotundata. Two-node cuttings from five (5)-month-old hybrid plants were grown in liquid media consisting of phytohormones (AIA3 and GA3) and liquid fertilizer (NPK 8-8-8) at different concentrations. Observations were made weekly from the 21st day after transplanting and focused on the survival rate of the cuttings, the number of roots emitted and the number of minitubers initiated. The results obtained showed a significant effect of the different growing media on the survival rate, rooting and production of minitubers. The best survival rates were obtained for cuttings grown in NPK (8-8-8) at 0.25% (100%) and AIA3 at 25 ppm (93.3%). The highest averages root number was recorded with growing media containing 0.25% NPK 8-8-8 (20.3) and 25 ppm AIA3 (17.7). Growing media with 0.25% NPK (8-8-8) and 25 ppm AIA3 provided the highest average numbers of minitubers initiated, respectively 5 and 4.6. Growing medium containing 0.25% NPK 8-8-8 has been identified as the one that allows better roots emission and minitubers production by yam vines cuttings.

关键词： Yam Vine Cutting Yam Seed Growing Medium Dioscorea rotundata

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Hydrogeochemical Characterization of Groundwater from Fissured Aquifers in the Angovia Mine Operating Permit Area (Central-West Côte d’Ivoire)

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Journal of Water Resource and Protection 2024年第1期16卷 83-101页

作者： Kouadio Michel Yao Tanina Drissa Soro Tanoh Jean Jacques Koua Akaie Jean Fabrice Tchakray Yao Emile Desmond konan Brou dibi Laboratory of Sciences and Technologies of Environment University Jean Lorougnon Guede Daloa C&ocircte d’Ivoire

The main objective of this study is to determine the hydrogeochemical specificities of the groundwater of the Angovia mine operating permit, located in the Yaouré mountains in the center-west of Côte d’Ivoire. To do so, descriptive and multivariate statistical analysis methods with the SOM (Self Organizing Maps) algorithm were applied to the physicochemical parameters of 17 boreholes using the calcite (ISC) and dolomite (ISD) saturation indices. The results obtained have shown that the groundwater in the Angovia mine operating permit area has an average temperature of 27.52°C (long rainy season) and 27.87°C (long dry season) and has an average pH of 7.09 ± 0.35 during the main rainy season and 7.32 ± 0.35 during the main dry season. They are mineralized with an average electrical conductivity of 505.98 ± 302.85 μS/cm during the long rainy season and with 450.33 ± 233.74 μS/cm as average during the long dry season. The main phenomena at the origin of groundwater mineralization are water residence time, oxidation-reduction and surface inflow. The study of the relative age of the water shows that the groundwater in the Angovia mine operating permit area is mainly undersaturated with respect to calcite and dolomite. They are therefore very old in the aquifer with a slow circulation speed during the long rainy season and the long dry season.

关键词： Hydrogeochemistry Mineralization Fissure Aquifers Operating Permits The Angovia Mine

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Calcium-Magnesium Ca/Mg Ratios and Their Agronomic Implications for the Optimization of Phosphate Fertilization in Rainfed Rice Farming on Acidic Ferralsol in the Forest Zone of Ivory Coast

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Open Journal of Soil Science 2024年第1期14卷 81-96页

作者： Fernand G. Yao Brahima Kone Franck M. L. Bahan Kouadio Amani Jean L. Essehi Mamadou B. Ouattara konan E. B. dibi Brou Kouame François Lompo Albert Yao-Kouame Central Laboratory Soils Water and Plants (LCSEP) National Center for Agronomic Research (CNRA) Bouaké Ivory Coast Soil Water and Geomaterials Sciences Laboratory (LS2EG) Cocody-Abidjan Earth Sciences and Mining Resources Training and Research Unit (UFR STRM) Félix Houphou&#235t-Boigny University Abidjan Ivory Coast Department of Rice Program Man Research Station National Center for Agronomic Research (CNRA) Man Ivory Coast Department of Geography Unit of Training and Research (UFR) Communication Environment and Society University Alassane Ouattara Bouaké Ivory Coast Food Crops Research Station (SRCV) National Agricultural Research Center (CNRA) Bouaké Ivory Coast Institute of the Environment and Agricultural Research (INERA) Ouagadougou Burkina Faso

This study is a contribution to improving rice productivity on acidic plateau soils of the tropical rainforest zone. It is based on taking into account the cationic balances of the soil in order to optimize the phosphorus (P) nutrition of rice on these acidic soils, where this nutrient constitutes a limiting factor for agricultural production. Three (3) pot trials were conducted in Adiopodoumé in the forested south of Côte d’Ivoire. The interactive effects of calcium carbonate (0, 25, 50 and 75 kg Ca ha−1) and magnesium sulfate (0, 25, 50 and 75 kg Mg ha−1) were evaluated on the response of NERICA 5 rice at doses 0, 25, 50 and 75 kg P ha−1 of natural phosphate from Togo, applied only once at the start of the experiment. Additional fertilizers of nitrogen (N) (100 kg N ha−1) and potassium (K) (50 kg KCl ha−1) were added to each of the tests in a split-plot device. The test results revealed a paddy production potential of approximately 3 to 5 t⋅ha−1 for NERICA 5 on an acidic soil, under the effect of the interaction of P, Ca and Mg. The quadratic response of rice yield to the doses of these fertilizers would be more dependent on their balance, itself influenced by Ca nutrition. For the sustainability and maintenance of rice production in agro-ecology studied, it was recommended doses of 38 kg Ca ha−1, 34 kg Mg ha−1 in a Ca/Mg ratio (1/1) with intakes of 41 kg P ha−1, overall in a ratio 1/1/1 (P/Ca/Mg) more favorable to the availability of free iron considered a guiding element of mineral nutrition. Thus, these promising results should be confirmed in a real environment for better management of the fertilization of rice cultivated on acidic plateau soils in Côte d’Ivoire.

关键词： Soil Acidity Ca/Mg Ratios Phosphate Fertilization Rice Growing Ivory Coast

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Development of a Model for Assessing Vulnerability to Pollution of Groundwater in Fissured Aquifers: The Case of the Ehania Watershed (South-Eastern Côte d’Ivoire)

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Journal of Environmental Protection 2021年第1期12卷 1-12页

作者： Brou dibi Arthur brice konan-Waidhet Valérie Plagnes Jean Biemi UFR Environment/Jean Lorougnon Guedé University Daloa C&ocirc te d’Ivoire UMR METIS/Sorbonnes University Paris France UFR STRM/Felix Houphouet Boigny University Abidjan C&ocirc te d’Ivoire

The protection of aquifers is a major concern for the authorities, especially in areas where there are large agro-industrial exploitations. The objective of this study is to define a new method of aquifer protection based on the characteristics of the structures of aquifers. The intrinsic vulnerability mapping method, PaPRI was used. It is a variant of the PaPRIKa method applied in karstic environment which has been adapted for its application in basement environment. This method uses three factors, including aquifer protection (P), using the soil cover, the unsaturated zone and the thickness of the alteration layer, (R) for the rock type and (I) for infiltration which including slope and drainage density. PAPRI is a method based on the weighting of different factors. The results obtained show 4 classes that evolve from low vulnerability classes (5% of the study area) to high and very high vulnerability classes (58%) and average vulnerability classes (37%). The classes of high and very high vulnerability, which indicate the zones that are very exposed to pollution, are more present in the central-northern part of the study area, with a few appearances towards the south. These zones could be related to topography due to the often very high slopes observed in the area. One of the advantages of this new method lies in the characterization of the alterations that strongly influence the migration of pollutants towards the water tables according to their nature and their thickness.

关键词： Vulnerability to Pollution Groundwater PaPRI Fissured Aquifer Ehania Watershed Côte d’Ivoire

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Repair of Complex Post-Traumatic Facial Dislocations: Indications, Therapeutic Difficulties and Results at Treichville University Hospital, Abidjan, Cote d’Ivoire

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Open Journal of Stomatology 2022年第11期12卷 337-345页

作者： A. M. R. E. Anzouan-Kacou Christophe konan Allah Romaric evrard Assi Yapo Eric Kouassi Zegbeh N’guessan Kouadio Emmanuel konan Department of Maxillofacial Surgery and Stomatology Treichville University Hospital Abidjan Cote d’Ivoire Department of Reconstructive and Aesthetic Plastic Surgery Hand Surgery and Burns Treichville University Hospital Abidjan Cote d’Ivoire Department of Stomatology and Maxillo-Facial Surgery University of Bouaké Health Centre Bouaké Cote d’Ivoire

Introduction: Complex post-traumatic facial disfigurements are caused by civilian or ballistic trauma. Their repercussions are functional, aesthetic and psychological. The initial emergency or secondary management of facial damage is difficult. The objective is to report, through the clinical observation of three patients, the results of the management of complex facial dislocations in a context of limited technical resources. Patients and methods: Three complex post-traumatic facial dislocations were managed between May 2006 and June 2017. Results: Primary treatment and secondary repair were established on a case-by-case basis. Local autoplasty was the indication of choice. Multidisciplinary management resulted in satisfactory functional and cosmetic outcomes. Two of the patients were lost to follow-up before the end of treatment. Discussion: The complete management of facial dislocations remains difficult and complex, in an extreme exercise situation. In an emergency, the priority is to save the life of the injured person. Several factors are involved in the therapeutic decision: the choice of the maxillofacial reconstruction technique, the availability of the technical platform, the financial capacity and the psychological state of the patient and his entourage. Sequential and multidisciplinary treatment gives satisfactory results in terms of morphology, function and aesthetics, despite the limited technical resources available. Psychological support is an essential complement for successful socio-professional and family reintegration.

关键词： Dislocation Face Complex Difficulties Treatment

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Elaboration of a Cartographic Model of Zones Favorable to the Implantation of Water Points: Case of the Watershed of Ehania, South-East of Côte D’Ivoire

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Journal of Water Resource and Protection 2019年第12期11卷 1503-1514页

作者： dibi Brou konan-Waidhet Arthur brice Kouadio Boyossro Hélène Savané Issiaka Jean Biemi Department of Environment University of Jean Lorougnon Guedé Daloa Cote D’Ivoire Department of Earth Sciences and Mining University of Felix Houphouet Boigny Abidjan Cote D’Ivoire Department of Environment Management University of Nangui Abrogoua Abidjan Cote D’Ivoire

The supply of drinking water from aquifers of base remains problematic because of his complexity. The combination of several methods is more adapted for the mapping of water establishment favorable areas. This study is focused on water points establishment favorable areas mapping. The methods used are remote sensing, pump tests sheets for determining aquifers and saprolites thickness. To determine the recharge, GR2M Method and drainage density has been used. The digital elevation model (DEM) has been used to generate slopes and drainage density maps. The thematic maps obtained combined under GIS to produce water potentiality map. The results obtained have been with exploitation rates. Three classes of potentialities have been identified. These are classes of high potentialities in groundwater which cover approximately 20% of the study area. It occurs mainly in central areas where there are sedimentary formations usually captured by the drilling. These areas are generally located in the central part, mainly in areas where there is low slope, important with a thick layer of saprolites.

关键词： Drinking Water Bases Aquifers GIS Multicriteria Analysis (MCA) Water Points Establishment

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Characterization of the Origin of Pollutants in Groundwater from Biostatistical Tests:The Case of Catchment Ehania,South-Eastern Cote d’Ivoire

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Journal of Water Resource and Protection 2013年第12期5卷 1178-1185页

作者： Brou dibi Arthur brice konan-Waidhet Felix Koffi konan Charles Sagne Yao Alex Kouadio Zile Issiaka Savane Dago Gnakri Universite Jean Lorougnon Guede Daloa DaloaCote d’Ivoire Universite Nangui Abrogoua AbidjanAbidjanCote d’Ivoire

The threat of agro-industrial exploitations on the quality of groundwater resources has become a major concern for the world’s population, mainly in agricultural areas. To solve this problem, several methods such as vulnerability to pollutants and statistics methods, have been adopted to protect these groundwaters. In this study, statistical tests were used to determine the likely source of pollutants in the groundwater resources. First, we made a comparative analysis and then analyzed pollutants parameters using Kohonen self-organizing map (SOM) which allows basic on the similarity to help out any correlation between the physic-chemical parameters. To validate these results, a land use map was developed to identify the sources of pollutants in production functions of different activities taking place on the catchment area. The results indicate very high levels of certain pollutants such as NO3-, Cl- and SO42- with generally higher than World Health Organization (WHO) standards values. These high levels observed could be attributed to the generally free nature of aquifers alteration and sedimentary formations in areas of high agro-industrial production. The analysis of the data from SOM method reveals a strong correlation between pollutants (NO3-, SO42-,Cl- ) and conductivity showing the likely origin of these surface pollutants,an origin that is linked to the existence of larges agro-industrials exploitations. These results are reinforced by those of the overlay map of the sampling sites on the land use map, which shows a strong coincidence between high values of pollutants and production areas of the pollutants that are agro-industrial exploitations. These areas of coincidence are observed in the north where found banana’s industrials plantations that are less visible and mostly in the southwest part where is one of the largest oil palm plantations in the world (36,000 hectares).

关键词： Characterization Origin of Pollutants Groundwater Biostatistical Tests Catchment Ehania

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Assessment of Two Years of Free Surgical Treatment of Cleft Lip, Palate and Alveolar (CLPA) in the Maxillofacial Surgery and Stomatology Department of the Hospital University of Treichville-Abidjan

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Open Journal of Stomatology 2023年第8期13卷 223-232页

作者： Anoumon Marguerite Reine Evelyne Anzouan-Kacou Romaric evrard Assi Yapo Jean Francois Regis Koffi Behibro Beatrice Tehoua Ettien Franck-Olivier Manoussa Seguy Emmanuel Kouadio konan Department of Stomatology and Maxillofacial Surgery Treichville University Hospital Abidjan C&ocircte d’Ivoire Department of Surgery and Specialties Faculty of Medical Sciences Felix Houphouet-Boigny University Abidjan C&ocircte d’Ivoire

Introduction: Cleft lip, palate and alveolar (CLPA) are congenital malformations of the face due to a defect in the fusion of embryonic buds during the first weeks of embryogenesis. These malformations affect the upper lip, the alveolar bone and the palate. The incidence in Africa ranges from 1/2000 to 1/500 births. Their multidisciplinary management is long and costly. Thus, the help provided by humanitarian organisations during free care campaigns is welcome. Materials and Methods: This is a retrospective descriptive study conducted from August 2014 to July 2016 in the Maxillofacial Surgery and Stomatology Department of the Treichville University Hospital in Abidjan, Côte d’Ivoire. The objective was to describe the epidemiological, clinical and therapeutic aspects of CLPA during a humanitarian campaign for free care. Results: 51 cases of CLPA were operated on. Males were involved in 54.9% of the cases, i.e. a sex ratio of 1.2. The average age of the patients at the time of the operation was 3.44 years with extremes of 3 months and 52 years. Patients with low socioeconomic status represented 84.3% of the cases. Cleft lips (31.4%) and cleft palates (33.33%) predominated. For cleft lips, unilateral forms were the most frequent (73.5%) and the left side was most often affected (59.2%). The most common surgical techniques used were MILLARD cheiloplasty for cleft lips (79.36%) and Dorrance pushback for cleft palates (78.05%). The postoperative course was simple in the majority of cases (80.47%). Patients and/or parents were satisfied with the postoperative results in over 90% of cases. Discussion: Cleft lip and palate are common. Their management by humanitarian missions through mass campaigns allows us to receive a large number of patients affected by this pathology who are treated with a high satisfaction rate. Conclusion: The characteristics of cleft lip and palate in this study are in many respects identical to those described in the literature, but with some differ

关键词： Cleft Lip and Palate Free Care Humanitarian Surgery

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Treatment and Sequelae of Panfacial Fractures in the Maxillofacial Surgery and Stomatology Department of the Hospital University of Treichville-Abidjan (Cote d’Ivoire)

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Open Journal of Stomatology 2023年第12期13卷 433-441页

作者： Romaric evrard Assi Yapo Anoumon Marguerite Reine Evelyne Anzouan-Kacou Beatrice Tehoua Ettien Jean Francois Regis Koffi Behibro Franck-Olivier Manoussa Seguy Emmanuel Kouadio konan Department of Stomatology and Maxillofacial Surgery Treichville University Hospital Abidjan C&ocircte d’Ivoire Department of Surgery and Specialties Faculty of Medical Sciences Felix Houphouet-Boigny University Abidjan C&ocircte d’Ivoire

Introduction: The treatment of panfacial fractures is complex and constitutes a challenge for the maxillofacial surgeon, who, despite therapeutic progress, frequently suffers functional and aesthetic sequelae. This study aimed to describe the treatment and evaluate the functional and aesthetic sequelae of panfacial fractures in the stomatology and maxillofacial surgery department of the Treichville University Hospital. Materials and Methods: We conducted a retrospective study over a 6 years in the stomatology and maxillofacial surgery department of Treichville University Hospital. Forty-two patients with panfacial fractures were included in the study. Results: Forty-two patients were registered. The average time to osteosynthesis was 12.4 days. Nasotracheal intubation was used most often (88%), and in the majority of cases, mixed osteosynthesis combining a screwed plate and steel wire was performed (64.29%). The “Bottom-up and Outside-in” surgical sequence was the most commonly used (64.29%). All patients had at least one functional and/or cosmetic sequela after treatment. Functional sequelae were dominated by occlusal problems and aesthetic sequelae by nasal deformities. Discussion: Panfacial fractures are characterised by their complexity, presenting maxillo-facial surgeons with a therapeutic and evolutionary challenge. The quality of the initial, often multidisciplinary, management of panfacial fractures is an essential factor in both functional and aesthetic prognosis. Conclusion: The treatment of panfacial fractures, even if well managed, is sometimes a source of sequelae, requiring often complex secondary management.

关键词： Aesthetic Sequelae Functional Sequelae Management Panfacial Fracture Treatment

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