Global Advanced Research Journal of Agricultural Science (ISSN: 2315-5094) 

April 2012 Vol. 1(2), pp 033-047

Copyright © 2012 Global Advanced Research Journals

Full Length Research Paper

Isolation of fungi causing rot of cocoyam (colocasia esculenta (l.) schott) and control with plant extracts: (allium sativum, l., garcinia kola, heckel., azadirachta indica, l. and carica papaya, l.) 

Anukworji C A1*, Ramesh .R.Putheti2*,R. N. Okigbo3*

1,3*Department of Botany,Nnamdi Azikiwe University, Awka,Anambra State, Nigeria.2* Member,American Association of Pharmaceutical Sciences,USA. 

Corresponding Author E-mail: rutwikusa@yahoo.com 

Accepted 02 April, 2012

                                                                                                                           Abstract

Antifungal effect of aqueous and ethanol extracts of Allium sativum, Azadirachta indica, Carica papaya and Garcinia kola on the growth of fungal pathogen of stored cocoyam cormels were investigated invitro. Four different extract concentrations were obtained from each plant parts used by blending 25g, 50g, 75g and 100g in 100ml of sterile distilled water (SDW). Phytochemical screening of the plants was conducted using different standard methods; this revealed the presence of alkaloid, saponin, tannins, flavonoid, phytate, oxalate and phenol in all the plants but at different concentrations. Effect of standard antibiotics (Grisovid) comparative to the plant extracts was determined. Pathogenicity test revealed that Aspergillus niger, Fusarium solani, Sclerotia rolfsii  and Botryodiplodia theobromae induced rot in healthy cocoyam cormels after 6 days of inoculation with Botryodiplodia theobromae being the most virulent. Even though all the extracts showed varying degrees of antifungal efficacy, ethanol extract proved to be more potent. The efficacy of the extract varied with the solvent of extraction, extract concentration and the test pathogens. Inhibition of fungal growth increased with a corresponding increase in extract concentration. Allium sativum and Azadirachta indica depicted an effective/high rate of inhibition on the mycelia growth of all the test fungi ranging from 40.57% to 92.40% whereas, extract of Carica papaya and Garcinia kola showed a lower inhibition rate ranging from 0.0% to 60.17%. 10% extract concentration of Allium sativum and Azadirachta indica being the most fungitoxic showed a significant (P<0.05) inhibition on all the test fungi pathogens. The fungitoxic potential of these plant extracts on rot inducing fungi of stored cocoyam corms/cormels recommends their use to farmers as alternative to commercial / synthetic fungicides. 

Keywords: Fungi, Isolation, Antifungal effect, Cocoyam.

Related Articles


Original Research Articles
Samer, S. Ibrahim and Ibrahim, A. Mostafa
Impact of some common diseases on profitability of broiler farms
Glo. Adv. Res. J. Agric. Sci. February 2018 Vol: 7(2): - [Abstract] [Full Text - PDF] (136 KB)
Andy Ramu and Veluchamy Vijayakumar
Antidiabetic activity of 7-methoxycoumarin from the bark of Marine plant Rhizophora mucronata
Glo. Adv. Res. J. Agric. Sci. May 2016 Vol: 4(1): - [Abstract] [Full Text - PDF] (613 KB)
Short Communication
Guillermo Fuentes-Dávila, Ravi Prakash-Singh, Ivón Alejandra Rosas-Jáuregui, José Luis Félix-Fuentes and Carlos Antonio Ayón-Ibarra
Evaluation of Bread Wheat Lines for Resistance to Karnal Bunt
Glo. Adv. Res. J. Agric. Sci. August 2018 Vol: 7(8): - [Abstract] [Full Text - PDF] (251 KB)
Original Research Articles
Onianwah, F. I.; Eze, V. C; Ifeanyi, V. O.; Stanley, H.O.
Biodegradation of Paraeforce Using Yeast Cells Isolated From Arable Farmland in Obio/Akpor Local Government Area of Rivers State.
Glo. Adv. Res. J. Agric. Sci. May 2020 Vol: 9(5): - [Abstract] [Full Text - PDF] (1,168 KB)
Nasiru, A. M., Salau, I. A. and M. Yakubu
Fungi Associated With Spoilage of Citrus Sinensis in Fruits and Vegetables Market, Sokoto, Nigeria
Glo. Adv. Res. J. Agric. Sci. December 2015 Vol: 4(12): - [Abstract] [Full Text - PDF] (114 KB)
Ameth Diagne, Bocar Noel Diop, Lat Souk Tounkara, Caroline Andreazza, Mbacké Sembène
Antifungal activity of silver@silica nanoparticles against aflatoxigenic Aspergillus flavus
Glo. Adv. Res. J. Agric. Sci. December 2018 Vol: 7(12): - [Abstract] [Full Text - PDF] (1,268 KB)

Current Issue

Viewing Options

View Full Article - PDF
Download Full Article - PDF

Search for Articles

Anukworji C A on Google Scholar
Anukworji C A on Pubmed
Ramesh R on Google Scholar
Ramesh R on Pubmed
Putheti on Google Scholar
Putheti on Pubmed
RN Okigbo on Google Scholar
RN Okigbo on Pubmed

Statistics

Viewed 2237
Printed 612
Downloaded 4127
Powered By iPortal Works