N. A. Amusa, A. A. Adegbite, S. Muhammed, and R. A. Baiyewu, "Yam disease and its management in Nigeria," African Journal of Biotechnology, vol. 2, pp. 497 -502, 2003.
N. A. Amusa, "Screening cassava and yam cultivars for resistance to anthracnose using toxic metabolite of colletotrichum species," Mycopathologia, vol. 150, pp. 137-142, 2000.
A. U. Osagie, The yam tuber in storage. Post harvest research unit, department of biochemistry. Benin City, Nigeria: University of Benin, 1992.
H. Nahunnaro, "Effects of different plant extracts in the control of yam rot induced by rhizopus stolonifer on stored yam (Dioscoreea Sp.) in Yola, Adamawa State, Nigeria," Agricultural Journal, vol. 395, pp. 382 – 387, 2008.
P. R. Olurinola, J. D. Ehimmidu, and J. J. Bonire, "Antifungal activity of n-tributyltin acetata against some common yam rot fungi," Applied and Environmental Microbiology, vol. 58, pp. 758 – 760, 1992.
R. N. Okigbo and F. E. O. Ikediugwu, "Studies on biological control of postharvest rot of yams (Dioscorea Spp.) with trichoderma viride," J. Phytopathol., vol. 148, pp. 351 – 355, 2000.
E. W. Cornelius and K. A. Oduro, "Storage disease of white yam (Dioscorea Rotundata) causes varietal susceptibility and control," Journal of the Ghana Science Association, vol. 3, pp. 45 – 52, 1999.
N. A. Amusa and R. A. Baiyewu, "Storage and market disease of yam tubers in South Western Nigeria," Ogun. J. Agric. Res., vol. 11, pp. 211 –255, 1999.
R. N. Okigbo, "Fungi associated with peels of postharvest yams in storage," Global J. Pure and Applied Sci., vol. 9, pp. 19-23, 2003.
R. N. Okigbo, C. A. Anukwuorji, and C. A. Ezeabara, "Effects of leaf extracts of chromolaena odorata (L.) and terminalia catappa (L.) on mycelia growth of yam tuber pathogens," Niger. J. Plt. Prot., vol. 27, pp. 74 – 84, 2013.
A. Donovan, S. Isaac, and H. A. Collin, "Inhibitory effects of essential oil components extracted from celery (Apium Graveolus) on he growth of septoria apiicola," Plant Pathology, vol. 42, pp. 691 – 700, 1999.
B. O. Ejechi, O. E. Nwafor, and F. J. Okolo, "Growth inhibition of tomato-rot fungi by phenolic acids and essential oil extracts of pepper fruit dennetia tripetata," Food Research International, vol. 32, pp. 395–399, 1999.
N. Ogbebor and A. T. Adekunle, "Inhibition of conidial germination and mycelia growth of corynespora cassiicola (Bark and Curt) of rubber (Hevea Brassiliensis Muell. Argo) using extracts of some plants," African Journal of Biotechnology, vol. 4, pp. 996-1000, 2005.
N. Ogbebor, A. T. Adekunle, and D. A. Enobakhare, "Inihibition of colletrichum gloeosporiodies (Penz) sac causal organism of rubber (Hevea Brasiliensis Muell. Arg.) leaf spot using plant extracts," African Journal of Biotechnology, vol. 6, pp. 213 – 218, 2007.
J. Y. Ijato, "Inhibitory effects of two indigenous plant extract (Zingiber Officinale and Ocimum Gratissimum) on postharvest yam (Dioscorea Rotundata) rot, in vitro," Journal of American Science, vol. 7, pp. 43 – 47, 2011b.
J. Y. Ijata, "Evaluation of antifungal effects of extracts of allium sativum and nicotiana tobacum against soft rot of yam (Dioscorea Alata)," Researcher, vol. 3, pp. 1-5, 2011a.
R. N. Okigbo, U. E. Eme, R. Asiedu, and P. Ramesh, "Effect of crude extracts of allium sativum lin, cymbopogon citrus CD. Stapf and terminalia catappa on rot causing fungi of dioscorea species," Nigerian Journal of Botany, vol. 22, pp. 359 – 369, 2009.
H. L. Barnett and B. B. Hunter, Illustrated genera of imperfect fungi, 4th ed. Minnesota: APS Press. The American Phytopathological Society, St. Paul, 1999.
A. Poongothai, K. P. Sreena, K. M. Saradhadevi, R. Santhi, and S. Annaprorani, "Phytochemical investigation of ficus glomerata linn leaves," Res. J. Pharm. Biol. and Chem. Sci., vol. 2, pp. 324 – 328, 2011.
Statistical Analytical System (SAS), User’s guide. Statistics version 91. Raleigh, N. Y. USA: SAS Institute Inc, 2002.
L. S. Gill, Ethnomedical uses of plants in Nigeria. Benin City: Uniben Press, University of Benin, 1992.
I. Ahmad, Z. Mehomood, and F. Mohammed, "Screening of some Indian medicinal plants for their antimicrobial properties," Journal of Ethnopharmacology, vol. 62, pp. 183 –193, 1998.
Z. U. Shariff, Modern herbal therapy for common ailments. Nature pharmacy series vol. 1. Ibadan: Spectrum Books Limited, Nigeria in Association with Safari Books (Export) Limited, United Kingdom, 2001.
B. S. Aliyu, Common ethnomedicinal plants of the semi arid regions of West Africa: Their description and phytochemicals. Kano, Nigeria: Triumph Publishing Company Ltd, 2006.
D. E. Okwu, A. N. Awurum, and J. I. Okoroknwo, "Phytochemical composition and in vitro antifungal activity screening of extracts from citrus plants against (Hibiscus Esculentus)," African Crop Science Conference Proceedings, vol. 8, pp. 1755 – 1758, 2006.
K. Haralampiodis, G. Bryan, X. Qi, K. Papdopoulou, S. Bakht, R. Melton, and A. Osbourn, "A new class of oxidosqualene cyclases direct synthesis of antimicrobial phytoprotectants in monocots," Proceedings of the National Academy of Science of the United States of America, vol. 98, pp. 13431–13436, 2001.
A. C. Amadioha, "Controlling rice blast in vitro and in vivo with extracts of azadirachta indica," Crop Protection, vol. 19, pp. 287 – 290, 2000.
R. N. Okigbo and I. A. Nmeka, "Control of yam tuber rot with leaf extracts of xylopia aethiopica and zingiber officinale," African Journal of Biotechnology, vol. 4, pp. 804 – 807, 2005.
V. C. Pawar and V. S. Thaker, "In vitro efficacy of 75 essential oil against aspergillus Niger," Mycoses, vol. 9, pp. 326 – 333, 2006.
A. Bediakao, F. A. Showemimo, Y. O. Asiamo, and D. H. A. K. Amewowor, "In vitro analysis of growth media and the control of yam minisett rot," Biotechnology, vol. 6, pp. 1-4, 2007.
D. Lin, E. Isuzuki, Y. Sugimoto, and M. Moatsuo, "Effects of methanol extracts from ophiopogon japonicas on rice blast fungus," Journal of Pest Science and Management, vol. 1, pp. 27 – 28, 2003.
A. O. Egbontan, C. G. Afolabi, and I. A. Kehinde, "Effects of some tropical plant extracts on mycelia growth and sporulation of fusarium graminearum, causal agent of fusarium head blight (FHB) of wheat (Triticuma Estivum L.)," Niger. J. Plt. Prot., vol. 27, pp. 28 – 35, 2013.
N. Sharma and A. Tripathi, "Fungitoxicity of the essential oil of citrus sinensis on postharvest pathogens," World Journal of Microbiology and Biotechnology, vol. 22, pp. 587–593, 2006.
A. K. Onifade, "Antifungal effects of azadirachta indica a. Juss. Extracts on colletotrichum lindemuthianum," Global Journal of Pure and Applied Sci., vol. 6, pp. 423 – 428, 2000.
R. N. Okigbo and C. N. Odurukwe, "Occurrence and control of fungal rot pathogens of yam (Dioscorea Rotundata Poir) with leaf extract of chromolena odorata, carica papaya and Aspilia Africana," Nigerian Journal of Mycology, vol. 2, pp. 154 – 165, 2009.
Nweke, F. U. (2015). Effect of Ethanol and Petroleum Ether Extracts of Some Medicinal Plants on Sclerotiumrolfsii, Causal Agent of Postharvest Rot of Yam (Dioscorea Spp.). Review of Plant Studies, 2(1): 1-8. DOI: 10.18488/journal.69/2015.2.1/220.127.116.11
Ethanol and Petroleum ether of leaves of Azadirachtaindica A. Juss, Citrus aurantifolia (Christm.)Swingle, Jatrophacurcas L., Anacardiumoccidentale L., seeds of Garcinia kola Heckel and peels of Citrus sinensisOsbek were studied for in vitro activity against mycelial growth and sclerotium germination of Sclerotiumrolfsii, Sacc., the causal agent of postharvest yam rot. The phytochemical screening of the extracts of the medicinal plants revealed the presence of alkaloids, flavonoids, glycosides, steroids, saponins, tannins and terpenoids. The ethanol and petroleum ether extracts showed varying levels of fungitoxicity activity with the ethanol extracts being more effective. Mycelial growth of S. rolfsii was significantly (P < 0.05) reduced by ethanol extracts of C. sinesis (89.63 – 100%), C. aurantifolia (67.04 – 83.28%) and A. indica (53.70 – 69.38%) during the period of incubation. Sclerotium germination was also significantly (P < 0.05) reduced by ethanol extracts of C. sinesis (87.50%), C. aurantifolia (62.50%) and A. indica (50%). This study showed the potentials of extracts of some plant products to control S. rolfsii in yam.