scholarly journals Inventory of tools and products for the storage and conservation of Bambara (Vigna subterranea (L) Verdcourt) seeds as a means of prevention against bruchis in Niger

2021 ◽  
Vol 14 (9) ◽  
pp. 3308-3322
Author(s):  
Siman Assoumane Issa ◽  
Aboubacar Kadri ◽  
Ibrahim Maman Laouali
Keyword(s):  
Analysis Of Variance ◽  
Callosobruchus Maculatus ◽  
Fine Sand ◽  
Bambara Groundnut ◽  
Toxic Chemicals ◽  
Vigna Subterranea ◽  
Significance Level ◽  
Storage Products

In Niger, several types of tools and products are used for the storage of Bambara groundnut. The objective of this study was to identify the tools and products used to prevent the damage of Callosobruchus maculatus (Fab.) On Bambara groundnut seeds in storage. Structured sowing questionnaires were administered to 404 heads of households in 16 target villages. Thus, some of the data collected was compared with means using analysis of variance (ANOVA) at a significance level of 5% followed by Ducan's test. Other results were used to make tables and figures using Excel software. It emerges from this survey that the seed is the most used form in the storage of Bambara groundnut (95%). The study revealed a diversity of tools encountered depending on the region. Single cans are used more in Tillabéri (70.4%) compared to Maradi (21.1%) and Dosso (15.3%). PICS bags are only used in Maradi (35.8%) and Dosso (35.3%). It was also observed that the simple bags are more encountered in Maradi (36.8%) followed by Dosso (8.6%) and Tillabéri (1.9%). Bank Grainary made of mud are only encountered in Dosso (37.3%). The inert storage products are the fine sand used in Dosso (37%), Tillabéri (13%), Maradi (4%) and the ash found only in Maradi (2%). At the same time, producers are increasingly adopting very toxic chemicals such as Phostoxin, Superdelvap to the detriment of local (Traditional) products. Au Niger, plusieurs types d’outils et produits sont utilisés pour le stockage de Voandzou. L’objectif de cette étude était d’inventorier les outils et produits utilisés pour prévenir les dégâts du Callosobruchus maculatus (Fab.) sur les graines de Voandzou en stockage. Des questionnaires semis structurés ont été administrés auprès de 404 chefs de ménages dans 16 villages cibles. Ainsi, certaines données recueillies ont fait l’objet d’une comparaison des moyennes en utilisant une analyse de la variance (ANOVA) à un niveau de signification de 5% suivie du test de Ducan. D’autres résultats ont servi de faire les tableaux et figures grâce au logiciel Excel. Il ressort de cette enquête que la graine est la forme la plus utilisée dans le stockage de Voandzou (95%). L’étude a ressorti une diversité d’outils rencontrés selon les régions. Les bidons simples sont plus utilisés à Tillabéri (70,4%) comparativement à Maradi (21,1%) et Dosso (15,3%). Les sacs PICS sont seulement utilisés à Maradi (35,8%) et Dosso (35,3%). Il a été aussi observé que les sacs simples sont plus rencontrés à Maradi (36,8%) suivi de Dosso (8,6%) et Tillabéri (1,9%). Les Greniers en bancos ne sont rencontrés qu’à Dosso (37,3%). Les produits inertes de stockage sont le sable fin utilisé à Dosso (37%), Tillabéri (13%), Maradi (4%) et la cendre rencontrée seulement à Maradi (2%). Dans le même temps, les producteurs adoptent de plus en plus des produits chimiques très toxiques comme le Phostoxin, le Superdelvap au détriment des produits locaux (Traditionnels).

GENETIC DIVERSITY IN BAMBARA GROUNDNUT (Vigna subterranean) AS REVEALED BY MOLECULAR WEIGHTS OF THE SEEDS’ PROTEINS

2018 ◽  
Vol 30 (2) ◽  
pp. 19-28
Author(s):  
A. J. Oludare ◽  
J. I. Kioko ◽  
A. A. Akeem ◽  
A. T. Olumide ◽  
K. R. Justina ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Seed Proteins ◽  
Electrophoretic Analysis ◽  
Protein Characterization ◽  
Bambara Groundnut ◽  
Vigna Subterranea ◽  
Phylogenetic Relatedness ◽  
Molecular Weights ◽  
National Centre ◽  
Standard Marker

Nine accessions of Bambara groundnut (Vigna subterranea (L.) Verdc.,syn. Voandzeia subterranea (L.) Thouars ex DC.)  obtained from National Centre for Genetic Resources and Biotechnology (NACGRAB), Ibadan, Oyo state, were assessed for their genetic and phylogenetic relatedness through electrophoretic analysis of the seed proteins. 0.2g of the seeds were weighed and macerated with mortar and pestle in 0.2M phosphate buffer containing 0.133M of acid (NaH2PO4) and 0.067 of base (Na2HPO4) at pH 6.5. Protein characterization with standard marker revealed that the seeds of the nine accessions contained proteins (B.S.A, Oval Albumin, Pepsinogen, Trypsinogen and Lysozyme) with molecular weights ranging from 66kda and above, 45 – 65 kDa, 44 – 33 kda, 32-24 kDa and 23-14 kDa, respectively. The student T-test revealed that accessions B, C, E, F, H and I have molecular weights not significantly different from one another (P<0.05) while samples A, D and G showed significantly different values (P>0.05). All the accessions had at least two proteins and two major bands in common. The study revealed intra-specific similarities and genetic diversity in protein contents among the nine accessions of Bambara groundnut (Vigna subterraranea (L.) Verdc.syn

Genetic diversity in Bambara groundnut (Vigna subterranea L.) germplasm revealed by RAPD markers

Genome ◽  
2001 ◽  
Vol 44 (6) ◽  
pp. 995-999 ◽  
Author(s):  
H I Amadou ◽  
P J Bebeli ◽  
P J Kaltsikes
Keyword(s):  
Genetic Diversity ◽  
Cluster Analysis ◽  
Rapd Markers ◽  
Random Amplified Polymorphic Dna ◽  
Geographic Origin ◽  
Bambara Groundnut ◽  
International Institute ◽  
Tropical Agriculture ◽  
Vigna Subterranea ◽  
Ibadan Nigeria

Random amplified polymorphic DNA (RAPD) markers were used to assess genetic diversity in Bambara groundnut (Vigna subterranea L.) germplasm using 25 African accessions from the collection in the International Institute for Tropical Agriculture, Ibadan, Nigeria. Fifty random decamer primers were screened to assess their ability to detect polymorphism in bambara; 17 of them were selected for this study. Considerable genetic diversity was found among the V. subterranea accessions studied. The relationships among the 25 accessions were studied by cluster analysis. The dendrograms showed two main groups of accessions mainly along the lines of their geographic origin. It is concluded that RAPD can be used for germplasm classification in bambara groundnut and hence for improving this crop.Key words: germplasm, PCR, RAPD, Vigna subterranea.

scholarly journals EFFECTS OF BELT SPEED, PRESSURE AND GRIT SIZE ON THE SANDING OF Pinus elliottii WOOD

CERNE ◽  
2015 ◽  
Vol 21 (1) ◽  
pp. 45-50 ◽  
Author(s):  
Manoel Cléber de Sampaio Alves ◽  
Luiz Fernando Frezzatti Santiago ◽  
Marcos Tadeu Tiburcio Gonçalves ◽  
Ivaldo De Domênico Valarelli ◽  
Francisco Mateus Faria de Almeida Varasquim
Keyword(s):  
Surface Roughness ◽  
Analysis Of Variance ◽  
Block Design ◽  
Pinus Elliottii ◽  
Grit Size ◽  
Significance Level ◽  
Belt Speed ◽  
Randomized Complete Block Design ◽  
Four Levels ◽  
Temperature Levels

The present paper aims to evaluate the influence of the factors (belt speed, pressure and grit size) on the output parameters (temperature and surface roughness) for Pinus elliottii wood sanding, processed parallel to the fibers. Three levels of belt speed, three levels of pressure and four levels of grit size were employed, with six replicates for each process, totaling 216 observations. The experiment conducted under a randomized complete block design (RCBD). The results were analyzed employing the analysis of variance (ANOVA) with 5% of significance level. Only grit sizes were significant to different temperature levels. The same outcome was observed for roughness, where only grits sizes were significant. No interaction between the pressure and belt speed factors were observed for all the results analyzed.

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