Pathogenicity and cell wall-degrading enzyme activities of some fungal isolates from cowpea (Vigna unguiculata (L) Walp)
OB Fawole,Oladimeji Ahmed,OS Balogun +2 more
- Vol. 18, Iss: 1
Reads0
Chats0
TLDR
Nine fungal species isolated from cowpea seeds were used as inocula on fourcowpea varieties commonly distributed to farmers in Ilorin, Kwara state, Nigeria and the effects of fungi on germinability and seedling health were determined using seedling symptom test.Abstract:
Nine fungal species isolated from cowpea seeds were used as inocula on four cowpea varieties commonly distributed to farmers in Ilorin, Kwara state, Nigeria by the National Seed Service, a subsidiary of the Federal Ministry of Agriculture and Natural Resources. The effects of fungi on germinability and seedling health were determined using seedling symptom test. Two of the virulent species were screened for the production of cell wall degrading enzymes using viscometric method. All the fungi reduced germination rate in all the cowpea varieties and different types of seedling symptoms were noted for the fungi. The symptoms included seed rot, chlorotic leaf development, stunted growth etc. Production of pectinases and cellulases by Aspergillus flavus and Penicillum sp. was observed and the virulence of the two organisms could be attributed to the activities of these cell wall degrading enzymes.read more
Citations
More filters
Journal ArticleDOI
Non-destructive 1H-MRI assessment of flesh bruising in avocado (Persea americana M.) cv. Hass
M. Mazhar,Daryl C. Joyce,Daryl C. Joyce,Gary Cowin,Ian M. Brereton,P. Hofman,Ray Collins,Madan Gupta +7 more
TL;DR: Proton magnetic resonance imaging was used as a non-destructive tool to monitor bruise expression over time in avocado cv.
Journal ArticleDOI
Does the informal seed system threaten cowpea seed health
P.C. Biemond,P.C. Biemond,O. Oguntade,P. Lava Kumar,T.J. Stomph,Aad J. Termorshuizen,Paul C. Struik +6 more
TL;DR: No evidence was found that seed recycling in the informal SS did lead to increased levels of seed-borne pathogens, and responsible authorities are recommended to make seed dressing mandatory for all seeds sold by seed companies.
Journal ArticleDOI
Survey of the symptoms and viruses associated with cowpea (Vigna unguiculata (L.)) in the agroecological zones of Kwara State, Nigeria
TH Aliyu,OS Balogun,L Kumar +2 more
TL;DR: The results of the field survey indicated that the symptoms observed on thecowpea plants were peculiar to those associated with virus disease infection, indicative of the presence of viruses in all the ecological zones of Kwara State where cowpea is cultivated.
Genetic variability, stability and relationship among some Cowpea, Vigna unguiculata (L.) Walp breeding lines
TL;DR: It is indicated that a meaningful selection of genotypes is possible for multi-trait improvement through hybridization and significant genetic and phenotypic correlation existed among the variables; implying typical association among the tested traits.
Effect of Sowing Dates on Yield and Yield Components of Cowpea Infected with Scab
TL;DR: The correlation of scab infected plant parts with yield and yield components was positive and significant for SAMPEA-6 and IT93K452-1 but IT93k452-2 showed some variations in correlations and scab disease incidence ratings were taken at 42 and 49 days after sowing.
References
More filters
Journal ArticleDOI
Insect Pests of Cowpeas
Louis E. N. Jackai,R.A. Daoust +1 more
TL;DR: Grown mainly as a secondary crop in associa tion with other staples such as maize, sorghum, millet, and cassava, cowpeas constitute the cheapest source of dietary protein and energy for most poor people in the tropical world.
Journal ArticleDOI
Purification of an Endo-β-1,4 Galactanase Produced by Sclerotinia sclerotiorum: Effects on Isolated Plant Cell Walls and Potato Tissue
TL;DR: A report of the partial purification of an endo-/3-1,4 galactanase produced by Sclerotinia sclerotiorum, detected in plant tissues infected with facultative depletion or alteration of cell wall polysaccharides pathogens.
Potential of sandbox, Hura crepitans L. seed oil for protection of cowpea seeds from Callosobruchus maculatus Fabricius (Coleoptera: Bruchidae) infestation
C. O. Adedire,O. E. Ajayi +1 more
TL;DR: Sandbox seed oil significantly reduced oviposition and adult emergence in both choice and no-choice experiments and effectively suppressed infestation and population build up by C. maculatus.
Journal ArticleDOI
Scab disease of cowpea (Vigna unguiculata) caused by Sphaceloma a species of the fungus
TL;DR: Scab disease of cowpea (Vigna unguiculuta) was shown to be caused by Sphaceloma sp.