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Phytochemical Composition and Insecticidal Property of Native Plants against the Cowpea Weevil Callosobruchus maculatus Fab. (Coleoptera: Bruchidae) for Natural Preservation of Cowpea Seeds

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Advances in entomology 2024年第1期12卷 56-66页

作者： elias Mano Rabièta Simde Koï Wenceslas Kam Nadjatou Ouédraogo Désiré Dramane Abdoul Khader Sanou Rasmané Abdou Ouédraogo Boubakar Ouattara pie.re.ale.andre.e.ic djifaby sombié Souleymane Nacro Laboratory of Natural Substances and Technologies of Natural Products and the environment (LABTeCH-PRONe) Institute of Research in Applied Sciences and Technologies (IRSAT) Ouagadougou Burkina Faso Central Horticulture Laboratory of the regional Center of excellence in Fruits and Vegetables of Bobo-Dioulasso Institute of Environment and Agricultural Research (INERA) Bobo Dioulasso Burkina Faso Department of Animal Biology and Physiology University Joseph Ki-Zerbo Ouagadougou Burkina Faso National Agricultural Training School of Matourkou (eNAFA) Bobo Dioulasso Burkina Faso Institute of Rural Development (IDR) Nazi Boni University Bobo Dioulasso Burkina Faso

About 80% of cowpea seeds are lost along with 30% of their weight after six months of unprotected storage due to attacks by Callosobruchus maculatus. This study aimed at evaluating the effect of applying bioinsecticides on the biological parameters of C. maculatus to reduce its damage to cowpea stocks. Four treatments including an untreated control and three doses of powdery extracts of C. nigricans, Z. zanthoxyloides and H. suaveolens, were compared in a Fischer block with four completely randomized repetitions. One hundred undamaged cowpea seeds were mixed with doses of each extract in Petri dishes and then fed as food substrates to ten pairs of C. maculatus for eight days. The extracts of H. suaveolens, C. nigricans and Z. zanthoxyloides all contain active ingredients including polyphenols, flavonoids, anthocyanins and alkaloids, etc. The extract of Z. zanthoxyloides was found to be more active on adults (100.00% mortality) followed by C. nigricans (98.75% mortality) and H. suaveolens (97.50% mortality) at 80 mg/g. Fecundity per female decreased significantly in the treated batches of 13.82 eggs for H. suaveolens at 10.12 eggs for C. nigricans at a dose of 80 mg/g. Germination rate of seeds was statistically raised to 100% at 60 and 80 mg/g by C. nigricans powder and lowered to 83.00% at 20 mg/g by Z. zanthoxyloides extracts. The application of Z. zanthoxyloides extract would be a less expensive alternative for the sustainable management of C. maculatus in cowpea stocks.

关键词： Cassia nigricans Hyptis suaveolens Zanthoxylum zanthoxyloides Biological Activities Vigna unguiculata Pest Burkina Faso

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The effect of Seed Size on Phytochemical Composition in Cowpea Lines (<i>Vigna unguiculata</i>(L.) Walp.) from Burkina Faso

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Agricultural Sciences 2021年第12期12卷 1462-1472页

作者： pie.re.ale.andre.e.ic djifaby sombié Hemayoro Sama Antoine Barro Adama Hilou Martin Kiendrébéogo Institute of environment and Agricultural research Ouagadougou Burkina Faso Laboratory of Biochemistry and Chemistry Applied (LABIOCA) University of Ouagadougou Ouagadougou Burkina Faso University of Dedougou Dédougou Burkina Faso

The study aimed to determine the effect of seeds size (length, width, thickness and 100 seeds-weight) on their phytochemical composition (total phenolics, total flavonoids, total proteins, soluble sugars and starch) of cowpea accessions (em>Vigna unguiculataem> (L.) Walp.) grown in Burkina Faso. The genotypes and their descendants had length, width, thickness and 100 seeds weight between 80 ± 0.7 to 7.40 ± 0.46 cm;6.51 ± 0.41 to 5.76 ± 0.46 cm;5.15 ± 0.37 to 4.22 ± 0.22 cm;12.93 ± 0.09 to 20.16 ± 0.39 g respectively. Total phenol, total flavonoid and starch contents ranged from 585.37 ± 9.73 to 1704.71 ± 4.87 mg GAe per 100 g DW;41.42 ± 2.03 to 52.26 ± 0.75 mg Qe per 100 g DW;6.45% ± 0.3% to 46.58% ± 0.12% respectively. The soluble sugars and total proteins contents were ranged respectively from 149.33 ± 3.80 to 432.82 ± 40.81 μg/100mg, and 20.28 ± 0.17 to 27.32 ± 0.17 (%). Seeds size characters had significant and positive correlations with starch content, and significant and negative correlations with total phenolic content. The study of the genetic parameters of phytochemical traits also revealed that they are slightly influenced by the environment. Genetic factors are believed to account for the variation in the observed seed traits, which provides a high potential of studied accessions for breeding programs.

关键词： Cowpea Seeds Size Phytochemistry Genetic Parameters

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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 pie.re.ale.andre.e.ic 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

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