Bioefficacy of Garlic, Allium sativum and Tobacco Nicotiana tabacum on Mortality, Ovipository Inhibition and Adult Emergence of the Cowpea Beetle Callosobruchus maculatus (Fab.) on Cowpea Vigna unguiculata (L.) (Walp.)

2016 ◽  
Vol 13 (4) ◽  
pp. 1-9
Author(s):  
P Baidoo ◽  
M Mochiah
Keyword(s):  
Nicotiana Tabacum ◽  
Vigna Unguiculata ◽  
Allium Sativum ◽  
Callosobruchus Maculatus ◽  
Adult Emergence

Oviposition deterrence and ovicidal properties of some plant powders against Callosobruchus maculatus in stored cowpea (Vigna unguiculata) seeds

1990 ◽  
Vol 115 (3) ◽  
pp. 343-345 ◽  
Author(s):  
T. I. Ofuya
Keyword(s):  
Nicotiana Tabacum ◽  
Plant Species ◽  
Vigna Unguiculata ◽  
Callosobruchus Maculatus ◽  
Oviposition Deterrence ◽  
Egg Hatch ◽  
Ocimum Gratissimum ◽  
Cowpea Seeds ◽  
Plant Powders

SUMMARYPowders made from 15 plant species were tested in the laboratory against C. maculatus on stored cowpea seeds. Fewest eggs were laid on seeds mixed with Nicotiana tabacum powder. Few eggs were also laid on seeds mixed with powders obtained from Erythrophleum suaveolens and Ocimum gratissimum. N. tabacum powder, followed by E. suaveolens powder, was the most effective in reducing egg hatch.

The inheritance of seed resistance to Callosobruchus maculatus F. in cowpea (Vigna unguiculata L. Walp.). II. Analyses of percentage emergence and emergence periods of bruchids in F4 seed generation of two reciprocal crosses

1983 ◽  
Vol 34 (6) ◽  
pp. 697 ◽  
Author(s):  
R Redden
Keyword(s):  
Vigna Unguiculata ◽  
Callosobruchus Maculatus ◽  
Adult Emergence ◽  
The Other ◽  
Recessive Character ◽  
Reciprocal Crosses ◽  
Bruchid Resistance ◽  
F2 Generation ◽  
Mean Time ◽  
Seed Resistance

Seed from F3 generation plants of two reciprocal crosses were evaluated for bruchid resistance, over 28 F3 families of four plants each plus an additional five plants each in 10-11 families. The variables, percentage adult emergence for a specified period and mean time to emergence, agreed with respect to describing segregation in the resistant, intermediate and susceptible categories. Resistance was expressed as a recessive character. No differences between families from reciprocal crosses were detected. There was evidence for digenic control of resistance in one cross and for monogenic control in the other, in conjunction with one, or more, modifier or minor gene loci. There was general agreement between the results for the F3 generation study and a previous study on the F2 generation.

Evaluation of leaf and vine powders of Secamone afzelii (Schult) K. Schum for control of Callosobruchus maculatus (Fab.) (Coleoptera: Bruchidae) in stored cowpea Vigna unguiculata (L.) Walp.

2011 ◽  
Vol 1 (3) ◽  
pp. 158-162
Author(s):  
J. M. Adesina ◽  
T. I. Ofuya
Keyword(s):  
Weight Loss ◽  
Vigna Unguiculata ◽  
Callosobruchus Maculatus ◽  
Adult Emergence ◽  
Application Rate ◽  
Post Treatment ◽  
Percentage Weight Loss ◽  
Laboratory Conditions ◽  
Percentage Weight ◽  
Treatment Number

The experiment was carried out to evaluate the efficacy of Secamone afzeliileaf and vine powders applied at the rate of 0.5g, 1.0g, 1.5g and 2.0g underambient laboratory conditions on Callosobruchus maculatus on stored cowpea.Mortality of adult insects at 48 h post treatment, number of eggs laid,adult emergence, adult exit holes and percentage weight loss in each treatmentwere compared with those of control. The results indicated that vinepowder caused significantly greater kill (P < 0.05) of C. maculatus adultswhen applied at 2.0g than other dosages. The application rate of 2.0g of leafpowder was able to cause reduction in number of eggs laid by the weevil(5.67/20g seed) and significantly (P < 0.05) suppressed adult emergence(21.12). Adult exit holes and percentage weight loss were significantly reducedat all levels of application. It is concluded that Secamone afzelii hasgreat potential for use as a plant‐based biopesticide for controlling C. maculatuson stored cowpea.

scholarly journals Evaluation of the Insecticidal Properties of Cassia alata L. Against Cowpea Weevil, Callobruchus maculatus Fab. (Coleoptera: Bruchidae)

2019 ◽  
Vol 1 (4) ◽  
pp. 84-92
Author(s):  
Olusola Michael Obembe ◽  
Joshua Kayode
Keyword(s):  
Vigna Unguiculata ◽  
Callosobruchus Maculatus ◽  
Adult Emergence ◽  
Dosage Level ◽  
Cowpea Weevil ◽  
Experimental Control ◽  
Long Term Storage ◽  
Treated Seed ◽  
Term Storage

A laboratory study was conducted to investigate the efficacy of powder and extract of C. alata on Callosobruchus maculatus Fab. damage in stored cowpea (Vigna unguiculata L.) seeds. The powder and the extract were evaluated on C. maculatus for mortality, oviposition and adult emergence effects. The long-term storage of the treated seeds was also investigated. All treatments recorded higher significant (p < 0.05) mortality than the experimental control. Highest mortality of 100 % was recorded in seeds treated with C. alata extract at the dosage level of 4.0 % v/w while highest mortality of 80.30 % was also recorded in seed treated with 4.0 g of C. alata powder. The powder and the extract significantly reduced oviposition and adult emergence in the treated seed. Adult emergence was totally suppressed in seeds treated with 3.0 % v/w and 4.0 % v/w. The powder and the extract also reduced infestation and subsequence damage of the treated seeds. No damage was recorded in seeds treated with 3.0 % v/w and 4.0 % v/w of the extract. The result obtained revealed that extract and powder of C. alata were effective in controlling C. maculatus and could be recommended as an alternative to synthetic insecticides.

scholarly journals Perforation index assessment of cowpea seeds against cowpea bruchid, Callosobruchus maculatus (Fabricius) [Coleoptera: Chrysomelidae], infestation using Piper guineense

2020 ◽  
Vol 81 (1) ◽  
Author(s):  
Kayode David Ileke ◽  
Jacobs Mobolade Adesina ◽  
Luke Chinaru Nwosu ◽  
Abimbola Olagunju
Keyword(s):  
Callosobruchus Maculatus ◽  
Adult Emergence ◽  
Adult Mortality ◽  
Contact Toxicity ◽  
Toxicity Assay ◽  
Piper Guineense ◽  
Cowpea Seeds ◽  
Leaf Powder ◽  
Human Use ◽  
Seed Extracts

Abstract Background Powders and extracts of Piper guineense seeds and leaves were assessed for insecticidal activities against Callosobruchus maculatus in the laboratory at temperature and relative humidity of 29.6 °C and 75.9%, respectively. Bioactive compounds in P. guineense leaves and seeds were also investigated. The powders were tested at rates 1.0, 2.0 and 4.0 g/20 g cowpea seeds while extracts were tested at 1.0, 2.0 and 3.0%. Results Results of contact toxicity assay of the seed powder caused 100% adult mortality at 96 h post-treatment period whereas leaf powder evoked 90% adult mortality within the same period at concentration of 1.0 g/20 g cowpea seeds. Low adult emergence was observed on cowpea seeds treated with 1 g of seed powder with percentage adult emergence of 10.0% and inhibition rate (IR) of 97.5%. Beetle Perforation Index (BPI) obtained from treated cowpea seeds was significantly different (P < 0.05) from BPI of untreated seeds. Extracts of P. guineense seed were more toxic than seed powder. Piper guineense seed extract caused 87.5% adult mortality of C. maculatus while leaf extract caused 70.0% adult mortality within 24 h of infestation at concentration of 1%. Progeny development of C. maculatus was completely inhibited in cowpea treated with 2% and 3% leaf and seed extracts of P. guineense. β-Pinene was the most abundant active compound in P. guineense seed (55.6%) and leaf (48.4%). β-Phellandrene occurred 38.2% in seeds while Ocimene had the least value of 0.2% in seed and 0.5% in leaf. Conclusion The study showed that P. guineense seed powder and extracts were more effective than leaf powder and extract. Utilization of plant products as alternative to synthetic insecticides in protecting cowpea seeds against C. maculatus should be encouraged for enhanced food safety and security. Piper guineense is used as spice and medicine and interestingly safe for human use.

Screening and Biochemical Analysis on Blackgram Genotypes for Resistance against Storage Pest Bruchine [Callosobruchus maculatus (F.)]

2021 ◽  
Author(s):  
S. Ragul ◽  
N. Manivannan ◽  
K. Iyanar ◽  
N. Ganapathy ◽  
G. Karthikeyan
Keyword(s):  
Biochemical Analysis ◽  
Callosobruchus Maculatus ◽  
Adult Emergence ◽  
Developmental Time ◽  
Developmental Period ◽  
Ms Analysis ◽  
Randomized Design ◽  
Biochemical Components ◽  
Storage Pest ◽  
Confirmatory Trial

Background: Blackgram [Vigna mungo (L.) Hepper] is a rich source of protein. It is one of the major crops essentially involved in daily human diets. However, storage pest bruchine [Callosobruchus maculatus (F.)] is a major production constraint for legumes. A research was formulated to assess the bruchine resistance in 20 blackgram genotypes along with the biochemical analysis to find out the active biochemical components responsible for the resistance activity.Methods: The experiment was carried out during August- October, 2019 at Entomology Laboratory, National Pulses Research Center, Vamban, India. The experimental material comprised of 20 blackgram genotypes which were screened for bruchine resistance. Further, confirmatory trial was conducted with selected resistant entries and highly susceptible entries during October- December, 2019. Both experiments were carried out in completely randomized design and replicated three times. GC-MS analysis on the resistant and susceptible entries were performed to ascertain the active biochemical components conferring resistance.Result: Among the genotypes, TU 68 had comparatively late developmental time (days), less number of adult emergence, higher mean developmental period (days), less susceptibility index, less seed damage (%) and less seed weight loss (%). Genotype TU 68 was found to be resistant in the confirmatory trial also. Less number of adult emergence and higher mean developmental period indicated the delayed developmental period which is a mechanism of bruchine resistance. GC-MS analysis on resistant (TU 68) and susceptible (MDU 1) genotypes indicated the presence of active biochemical compounds with insectifuge activity in TU 68. Hence, TU 68 could be utilized in the hybridization programmeas donor for bruchine resistance.

scholarly journals Estabilidade da resistência de genótipos de caupi a Callosobruchus maculatus (Fabr.) em gerações sucessivas

2002 ◽  
Vol 59 (2) ◽  
pp. 275-280 ◽  
Author(s):  
Marcileyne Pessôa Leite de Lima ◽  
José Vargas de Oliveira ◽  
Reginaldo Barros ◽  
Jorge Braz Torres ◽  
Manoel Eneas de Carvalho Gonçalves
Keyword(s):  
Vigna Unguiculata ◽  
Callosobruchus Maculatus

Callosobruchus maculatus (Fabr.) (Coleoptera: Bruchidae) é a principal praga do caupi (Vigna unguiculata L.) armazenado em condições tropicais e subtropicais. Avaliaram-se a estabilidade da resistência e a capacidade de adaptação de C. maculatus a genótipos de caupi, durante seis gerações. Utilizou-se o teste sem chance de escolha, em delineamento experimental inteiramente casualizado, em esquema fatorial, com dez tratamentos, seis gerações do inseto e cinco repetições. Cada repetição constou de 30 grãos infestados com dois casais da praga. O número de ovos/fêmea diferiu entre os genótipos de caupi apenas na sexta geração, e entre as gerações em BR14-Mulato, Bico de Pato, TE90-180-3E e TE87-98-8G. A viabilidade de ovos diferiu entre as gerações em BR17-Gurguéia, BR14-Mulato, IT89KD-260 e IT89KD-245, e entre os genótipos nas terceira, quinta e sexta gerações. Os genótipos diferiram entre e dentro das gerações, em relação à duração e a viabilidade da fase imatura. Observou-se redução na emergência, especialmente em IT89KD-245, IT89KD-260, CNC 0434, Bico de Pato, TE90-180-10F e BR14-Mulato, provavelmente devido a substâncias químicas presentes nos grãos que afetaram a sobrevivência dos insetos, ao longo das gerações. Os genótipos IT89KD-245 e IT89KD-260 comportaram-se como moderadamente resistentes. Não se observou adaptação de C. maculatus aos genótipos, mantendo-se a resistência estável através das gerações.

Sign in / Sign up

Export Citation Format

Share Document