Effect of constant temperature and humidity on oviposition and development of Callosobruchus maculatus (F.) and Callosobruchus subinnotatus (Pic) on bambara groundnut, Vigna subterranea (L.) Verdcourt

2003 ◽  
Vol 39 (5) ◽  
pp. 459-470 ◽  
Author(s):  
N.E.S Lale ◽  
S Vidal
2016 ◽  
Vol 10 (3) ◽  
Author(s):  
Seth Wolali Nyamador ◽  
Abla Déla Mondédji ◽  
Guillaume Koffivi Ketoh ◽  
Komina Amévoin ◽  
Isabelle Adolé Glitho

2021 ◽  
Vol 14 (9) ◽  
pp. 3308-3322
Author(s):  
Siman Assoumane Issa ◽  
Aboubacar Kadri ◽  
Ibrahim Maman Laouali

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).


2018 ◽  
Vol 30 (2) ◽  
pp. 19-28
Author(s):  
A. J. Oludare ◽  
J. I. Kioko ◽  
A. A. Akeem ◽  
A. T. Olumide ◽  
K. R. Justina ◽  
...  

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


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