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Bt cotton seed purity in Burkina Faso:status and lessons learnt

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Journal of Cotton Research 2020年第4期3卷 260-267页

作者： BOURGOU Larbouga KARGOUGOU Ester sawadogo mahamadou FOK Michel INERA Programme CotonBP 208Bobo-DioulassoBurkina Faso SOFITEX Laboratoire Contrôle QualitéSemences01 BP 147Bobo-Dioulasso 01Burkina Faso UniversitéOuaga1 Joseph Ki-Zerbo 09 BP 848Ouagadougou 09Burkina Faso CIRAD F-34398 MontpellierFrance UPR AIDA Univ MontpellierMontpellierFrance.

Background:Since the commercial release of Bt cotton in Burkina Faso in 2009,the issue of seed purity in producers’fields has rarely been addressed in an unbiased and objective *** potential for contamination of conventional seed varieties with Bt traits and the consequent threat to the continuation of organic cotton production has been ***,studies are rare on the varietal purity of Bt cotton seeds,despite the implications for the effectiveness and sustainability of their *** paper compensates for the lack of research on the varietal purity of cotton seeds in Burkina Faso by reporting the results of Enzyme linked immunosorbent assay tests collected in 2015 on samples of both conventional and Bt varieties from 646 ***:According to the conservative criteria used to declare the presence of a Bt gene in a given variety(more than 10%of seeds of conventional variety exhibit Bt traits,and at least 90%of seeds of Bt variety exhibit Bt traits),seed purity was very questionable for both types of *** the supposedly conventional variety,the Cry1Ac gene was observed in 63.6%of samples,the Cry2Ab gene was observed in 59.3%of samples,and both genes were detected in 52.2%of the seed *** 29.3%of the seeds that were supposed to be of conventional type contained no Bt ***,for the labeled Bt variety,the Cry1Ac gene was found in only 59.6%of samples,the Cry2Ab gene was found in 53.6%of the samples,and both genes were found in 40.4%of the ***,for the seeds that were supposed to contain both genes(Bollguard 2),both Cry1Ac and Cry2Ab genes were found in only 40.4%of the samples,only one of the genes was found in 32.4%of the samples,and 27.2%of the seeds in the samples contained *** factors are responsible for the severe lack of seed ***,conventional varieties are being contaminated with Bt traits because of a failure to revise the seed production scheme in Burkina Faso to prevent cross-pollinat

关键词： Conventional cotton Organic cotton GM cotton Seed production scheme Seed control Burkina Faso

Agromorphological Characterization of Introgression Lines Derived from Wild and Exotic Sorghum Germplasm to Climate Change Challenges

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Agricultural Sciences 2021年第10期12卷 1129-1149页

作者： Ouindyam Colette Ouédraogo Nerbéwendé sawadogo Eva Weltzien Baloua Nebie Fred Rattunde Aboubacar Touré Ibrahima Sissoko mahamadou sawadogo Equipe Génétique et Amélioration des Plantes Laboratoire Biosciences Ecole Doctorale Sciences et Technologies Université Joseph Ki-Zerbo Ouagadougou Burkina Faso International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) Bamako Mali University of Wisconsin-Madison Madison WI USA

Sorghum (Sorghum bicolor (L.) Moench) is vitally important for food security in semi-arid West Africa. The introgression of wild- and high transpiration efficiency genotypes may contribute genes for abiotic stress tolerance or novel traits. Characterizing the introgressed lines can help researchers in the process of varietal improvement. The objectives of this study are (i) To learn if introgression of wild sorghum (CWR) and high transpiration efficiency (HTE) lines into a very early maturing (photoperiod insensitive) local land-race variety can create useful variation for grain yield in drought-prone Sahelian environments, (ii) To determine if grain yield advantages (and putative drought tolerance traits) obtained from introgression of CWR and HTE germplasm are expressed differently in moderately to highly moisture-limited environments, and (iii) To understand the relationship between putative drought tolerance traits. These populations were developed from crosses between the CSM63E (Jakumbe, a high grains quality variety) and two wild parents (accessions) and five high transpiration efficiency (TE) sorghum accessions. Phenotyping was conducted using an alpha lattice design with three replications in two environments for agronomic traits (grain yield and components), flowering time and physiological traits (stay-green, chlorophyll content and lodging). A total of 669 BC1F5 progenies were developed. Genetic variation for grain yield and putative drought tolerant traits were evaluated. Both populations derived from wild parents exhibited in Cinzana a grain yield (>300 g/m2) greater than CSM63E (245 g/m2). In Bema, more than 75% of the progenies of all populations indicated a chlorophyll content at physiological maturity (>30 SPAD) higher than CSM63E (20 SPAD) chlorophyll content. The estimated broad sense heritability was generally high (≥0.50) for all traits. The results also showed a very significant interaction between genotype and e

关键词： Sorghum Transpiration Drought Variability Climate Change

Genetic Diversity of Local Rice Accessions Cultivated in Guinea Based on Agro-Morphological Traits and Identification of Sources of Tolerance to Iron Toxicity

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Agricultural Sciences 2021年第10期12卷 1070-1088页

作者： Mamadou Laho Barry Nerbéwendé sawadogo Mahamadi Hamed Ouédraogo Kiswendsida Romaric Nanema Sawa Camara Moussa Sié Pauline Bationo-Kando mahamadou sawadogo Genetic and Plant Breeding Team (EGAP) Biosciences Laboratory Doctoral School of Science and Technology Joseph KI-ZERBO University Ouagadougou Burkina Faso Guinea Institute of Agronomic Research (IRAG) Conakry Guinea Institute of Environment and Agricultural Research Bobo-Dioulasso Burkina Faso

In Guinea, traditional rice varieties are the most widely cultivated in rural areas despite their low yield and high susceptibility to iron toxicity. Moreover, the introduction of new improved varieties tolerant to iron toxicity poses a serious threat to the preservation of the genetic resources of these traditional varieties, whose genetic diversity remains poorly known. The present study therefore aims at a better valorisation of these local rice cultivars through the evaluation of their agromorphological diversity and the identification of genotypes potentially tolerant or resistant to iron toxicity. Thus, 90 accessions collected in the regions of Kindia and Macenta and six controls susceptible or resistant to iron toxicity (AZUCENA, BOUAKE 189, CK 73, IR64, NERICAL 19 and AURYLUX 6) were evaluated in three replicate alpha lattice designs in two sites (Sérédou and Kilissi) using 16 agromorphological traits. The results showed significant agromorphological variability of the traditional accessions at both sites for all qualitative and most quantitative traits studied. In addition, 30 local cultivars expressed similar or higher grain yields than the resistant or tolerant controls at both sites, of which 12 were found to be stable at both sites. Of the 12 cultivars identified, five were resistant and seven tolerant to iron toxicity. These 12 accessions could be used in the varietal improvement of lowland rice in Guinea Conakry.

关键词： Local Varieties Oryza Genetic Variability Environmental Stress Guinea

Physical and Cooking Characteristics of Six Cowpea Varieties Seeds Cultivated in Burkina Faso

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American Journal of Plant Sciences 2022年第7期13卷 929-942页

作者： Karidiatou Traore Pingawindé sawadogo Téyouré Benoit Joseph Batiéno Nerbéwendé sawadogo Hamadou Zongo Saadon Leandre Poda Jean Baptiste De Salle Tignegré Tinga Jeremy Ouédraogo mahamadou sawadogo Institut de l’Environnement et de Recherches Agricoles (INERA) CNRST Ouagadougou Burkina Faso Centre Universitaire de Tenkodogo Université Thomas SANKARA Tenkodogo Burkina Faso équipe Génétique et Amélioration des Plantes/Laboratoire Biosciences Ecole Doctorale Sciences et Technologies Université Joseph KI-ZERBO Ouagadougou Burkina Faso

Cowpea is essential in the diet in Burkina Faso. The information on their physical properties and cooking quality is important for consumer acceptance. This study has therefore been undertaken in order to fill the gap. Thus, six cowpea varieties were evaluated for their physical and cooking properties. The seeds had between 9% to 12% moisture. For physical proprieties, the result revealed that the variety Makoyin had the highest seed length (9.65 mm), the variety Gourgou recorded the highest seed width (7.08 mm), seed thickness (5.13 mm), and seed area (153.29 mm2), and 100-seeds weight (21.1 g). The lowest seed sizes were presented by the variety Teeksongo with values of 7.88 mm, 6.34 mm, 4.88 mm, 122.68 mm2, and 16.87 g for respectively the length, the width, the thickness, the area, and the 100-seeds weight. The variety Makoyin produces seed elliptical form and varieties Neerwaya, Gourgou, Yipoussi and Issa-sosso, and Teek-songo the seeds spherical form. For cooking proprieties, the highest value of the bulk density of the seeds was presented in the variety Teek-song (1.51 g/ml). The highest hydration and swelling capacity were observed in varieties Gourgou (0.22 g/seed and 0.24 ml/seed respectively) and Yipoussi (0.22 g/seed and 0.21 ml/seed respectively). The seed with large size, greater hydration, and swelling capacity is preferred by consumers and processors for food products. Varieties Makoyin, Neerwaya, Gourgou, Yipoussi, and Issa-sosso presented cooking time of unsoaked seeds equal to one hour (from 60 to 68 min) excepted Teek-songo which had 46 min. These cooking times are acceptable for consumers. Seed length, surface area, thickness, the weight of seeds, hydration capacity, and cooking time have been the most discriminating among the cowpea varieties studied.

关键词： Cowpea Varieties Physical Properties Cooking Properties Burkina Faso

Genetic Relationship between Sweet Grain Sorghum and the Other Sorghum Types Cultivated in Burkina Faso Assessed with Nuclear Microsatellite Markers SSRs

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American Journal of Plant Sciences 2022年第6期13卷 872-883页

作者： Josiane Tiendrebéogo Nerbéwendé sawadogo Mariam Kiébré Zakaria Kiébré Sévérin Tuina Tégawendé Alphonse sawadogo Kiswendsida Romaric Nanema Renan Ernest Traoré Mahamadi Hamed Ouédraogo mahamadou sawadogo équipe Génétique et Amélioration des Plantes Laboratoire Biosciences Université Joseph KI-ZERBO Ouagadougou Burkina Faso

In Burkina Faso, sweet grain sorghum [Sorghum bicolor (L.) Moench] is generally cultivated in association with several other types of sorghum. However, the lack of information on the genetic relationship between this sorghum and grain sorghum as well as sweet stalk sorghum hinders the efficient management of its genetic resources. Thus, 34 sorghum accessions consisting of 14-grain sorghum, 10-sweet stalk sorghum, and 10 sweet grain sorghum were evaluated using 15 nuclear microsatellites markers (SSRs) to determine their genetic relationship. Results revealed significant genetic diversity within each sorghum type and a significant index of genetic differentiation per pair of sorghum types (0.017) between sweet grain sorghum and sweet stalk sorghum. The minimum Nei distance was also high (0.12) between these two sorghum types. Sweet grain sorghum indeed showed the lowest values of theoretical heterozygosity (0.35), of observed heterozygosity (0.13). Structuring of the accessions of the three types of sorghum cultivated in two distinct groups, one of grain sorghum and sweet stalk sorghum and another consisting of accessions of grain sorghum and sweet grain sorghum was also obtained. The low differentiation observed would suggest greater genetic proximity between the three types of sorghum. The differences observed would be more of a physiological and biochemical nature. These results could contribute to better management of the genetic resources of sweet grain sorghum.

关键词： Sorghum Markers Genetic Diversity Phylogeny Burkina Faso

Molecular Characterization Using Microsatellites of Bambara Nut (<i>Vigna subterranea</i>[L] Verdcourt) Landraces Cultivated in Burkina Faso

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Agricultural Sciences 2021年第10期12卷 1119-1128页

作者： Diane Judicaëlle Kambou Hervé Nandkangre Adjima Ouoba Abdou Kader Congo N’Golo Moussa Konate Wend-Pagnangdé Marie Serge Félicien Zida Nerbéwendé sawadogo mahamadou sawadogo Mahama Ouedraogo Université Joseph KI-ZERBO UFR-SVT Ecole Doctorale Sciences et Technologies Laboratoire Biosciences Equipe Génétique et Amélioration des Plantes Ouagadougou Burkina Faso Institut de l’Environnement et de Recherches Agricoles (INERA) Département de Productions Végétales Laboratoire de Génétique et de Biotechnologies Végétales Ouagadougou Burkina Faso Centre Universitaire de Tenkodogo/Université Thomas SANKARA Ouagadougou Burkina Faso Centre Universitaire de Ziniaré Université Joseph KI-ZERBO Ouagadougou Burkina Faso Université Norbert ZONGO UFR ST (Sciences et Technologies) Koudougou Burkina Faso

Voandzou is a seed legume cultivated in Burkina Faso with significant nutritional potential. The objective of this study was to assess the genetic diversity of Bambara nut cultivated in Burkina Faso using microsatellite markers. For the study, fifteen SSRs markers were used for molecular characterization of 90 Bambara nut landraces from three agro-climatic zones of Burkina Faso. All markers were 100% polymorphic with an average value of 4.81 for effective alleles. The polymorphism information content (PIC) ranged from 0.654 to 0.867 with a mean of 0.775. Dendrogram classified the accessions in four mixed groups independently of the three agro-climatic zones. This distribution is consistent with the results on the agro-morphological characterization of the same landraces. This information was served as a basic model for breeding and conservation programs of V. subterranea in Burkina Faso.

关键词： Bambara Nut Landraces Genetics Diversity SSR Markers

Evaluation of Soybean Genotypes (Glycine max L. Merr.) Susceptibility to Parasitic Nematodes in Western Part of Burkina Faso

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Agricultural Sciences 2023年第1期14卷 23-34页

作者： Gilles Ibié Thio Bouma Thio Nofou Ouédraogo Frank Essem Inoussa Drabo Oumar Boro Fabrice Wendyam Nikiema Pierre Alexandre Eric Djifaby Sombié David Yago Hervé Bépio Bama mahamadou sawadogo Paco Sérémé Institut de l’Environnement et de Recherches Agricoles (INERA) Ouagadougou Burkina Faso Akenten Appiah-Menka University of Skills Training and Entrepreneurial Development Ashanti Mampong Ghana Université Joseph KI-ZERBO/UFR Science de la Vie et de la Terre Ouagadougou Burkina Faso

Parasitic nematodes have been reported as one of the major constraints to soybean production worldwide. The majority of nematodes are so-called “free-living” and feed mainly on bacteria, fungi, protozoa and other nematodes. In Burkina Faso, the presence of parasitic nematodes has been reported in crops such as rice and sorghum. The objective of this study was to identify the genera and species of nematodes associated with soybean production in Burkina Faso. Investigations were carried out on 24 genotypes of a medium-maturity group of soybean at the Farako-Ba research station. Soil samples were taken from the trial soil before its installation. At harvest, soil samples with roots were taken from each genotype in the elementary plots. The composite sample is represented by 4 lots of soil samples with roots. Extractions and counts of nematodes were performed on the different lots. In total, 7 genera of plant-parasitic nematodes associated with soybean were identified. Among these genera, Pratylenchus (100% of infected genotypes), Helicotylenchus (97.28%) and Scutellonema (94.44%) were the most prevalent in terms of frequency and abundance. Some soybean genotypes were less susceptible to the genus Pratylenchus is known to be highly pathogenic in soybean. These were mainly the genotypes TGX2025-10E, TGX2023-3E and TGX2025-14E.

关键词： Parasitic Nematodes Susceptibility Genotypes Soybean Burkina Faso

Induced Resistance to <i>Striga hermonthica</i>in Sorghum by Gamma Irradiation

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American Journal of Plant Sciences 2020年第10期11卷 1545-1561页

作者： Minimassom P. Nikièma Djibril Yonli Harimialimalala J. Rabefiraisana Adel Ali Nofou Ouédraogo Hamidou Traoré Hamidou Y. A. Yanogo Karim Dao mahamadou sawadogo Ljupcho Jankuloski Ingelbrecht Ivan Mukhtar Ali Ghanim Abdelbagi Institut de l’Environnement et de Recherches Agricoles (INERA) Ouagadougou Burkina Faso Faculty of Sciences University of Antananarivo Antananarivo Analamanga Madagascar Plant Breeding and Genetics Laboratory Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture Department of Nuclear Sciences and Applications (NAFA) International Atomic Energy Agency (IAEA) Seibersdorf Austria Université Joseph Ki-Zerbo Ouagadougou Burkina Faso NAFA IAEA Vienna International Center Vienna Austria

Striga species affect the potential productivity of cereals in sub-Saharian Africa due to the lack of durable Striga-resistance in host crops. This study aimed at inducing the new source of resistance in sorghum using gamma irradiation. Dry seeds of three Sorghum varieties;Grinkan, ICV1049 and Sariaso14 were gamma-irradiated with 200 Gy, 300 Gy, 400 Gy and 500 Gy. Screening strategies involved a 2-year field and greenhouse experiments, where mutant Sorghum families, their parents and resistant control were artificially infected with Striga hermonthica seeds. Field screenings revealed induced genetic variability among them, forty families significantly reduced the number of emerged Striga plants or showed good Sorghum grain yield performance despite the infection by S. hermonthica ecotype from Burkina Faso. The induced putative resistant mutants were identified across the four applied gamma-irradiation doses. Greenhouse experiment confirmed Striga resistance in seven mutant Sorghum families leading to no emergence of Burkina’s S. hermonthica ecotype along with high resistance index (RI) and low Striga damage score. Among them, two mutants SA38M5 and IC47M5 withstood S. hermonthica

关键词： Sorghum Induced Mutation Striga Resistance

Screening of Foot at Risk in Diabetic Patients

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Open Journal of Internal Medicine 2019年第3期9卷 62-71页

作者： Djenebou Traore Djeneba Sylla Sow Massama Konaté Ousmane Sidibé Modibo Mariko Djibril Sy Bah Traoré Karim Dao Amadou Koné Nanko Doumbia Nouhoum Ouologuem Yacouba Lazard Diallo Boua Daoud Camara Nongoba sawadogo Ibrahima Amadou Dembélé Barry Boubacar Sangaré Mamadou Cissoko mahamadou Saliou Youssouf Fofana Mamadou Mallé Mamadou Togo Adramé Keita Abdramane Traoré Nagou Tolo Madani Ouologuem Abdel Kader Traoré Assa Traoré Sidibé Department of Internal Medicine The University Teaching Hospital of Point G Bamako Mali Department of Internal Medicine and Endocrinology The Mali Hospital Bamako Mali CHR Internal Medicine Department of Kaya Kaya Burkina Faso Department of Internal Medicine The Mother and Children Hospital “Luxembourg” Bamako Mali Department Internal Medicine The Hospital of Kati Bamako Mali

Introduction: The term “diabetic foot” refers to all conditions that affect the foot and are directly related to the impact of diabetes. Objective: Screen the foot at risk in diabetic patients at the hospital of Mali. Methods: It was a cross-sectional study from January 1st, 2016 to June 30, 2016, at the Department of Internal Medicine and endocrinology of the Hospital of Mali. It was focused on all hospitalized diabetic patients. Results: Thirty-two (32) patients had a foot at risk among 76 diabetic patients during the study period representing 42.10%. The sex ratio was 0.52. Type 2 diabetes accounted for 82%. A glycemic imbalance (HBA1C > 7%) was observed in 88.15%. Eighteen percent (18%) of patients had a history of ulceration or amputation;33% were walking barefoot;78.9% had tingles in the foot;31.6% had intermittent claudication;64.5% had foot cleanliness;8% claw toes;42% had abolition or reduction of superficial tenderness to monofilament and 21% had mixed foot (neuropathy + arteriopathy). In our study, 58.9% of patients had no risk of podiatry. Conclusion: Screening of foot at risk is essential in the management of diabetes because it determines the podiatric risk enabling to minimize future functional disabilities.

关键词： Foot at Risk Diabetes Hospital of Mali