Plant Pathology Journal1812-53871812-5425Asian Network for Scientific Information10.3923/ppj.2010.39.46ChalaA. AlemuT. PromL.K. TronsmoA.M. 1201091The severity and temporal dynamics of anthracnose on susceptible (BTx623 and AL70) and resistant lines (2001 PWColl No. 022 and 2001 HararghieColl No. 12) were studied in field plots during the 2007 and 2008 growing seasons in southern Ethiopia. The initial, final and mean anthracnose severities and area under disease progress curves were used as criteria to evaluate the response of the genotypes. Over the two years, the initial, final and mean anthracnose severities ranged from 0.88 to 16.13%, 7.56 to 78.38% and 3.57 to 46%, respectively, while area under disease progress curve averaged for the two years ranged from 221.31 to 2951.88. All the evaluation criteria showed highly significant variations (p<0.0001) among the genotypes and the Ethiopian genotype 2001 PWColl No. 022 consistently had the lowest disease levels regardless of the evaluation criteria and growing season. The disease appeared rather late and progressed slowly on this genotype. On the other hand, the exotic cultivar, BTx623, showed the most sever anthracnose infection. Initial anthracnose severity was significantly higher and the disease developed rapidly on BTx623 than on the other three genotypes. The other two genotypes showed intermediate response and progression of the disease. Correlation and regression analyses revealed a significantly strong association between rainfall and anthracnose severity but temperature appeared to have little/no impact on the development of anthracnose in the field. The present study confirmed the effect of both host genotypes and weather, particularly rain on anthracnose development. The Ethiopian sorghum genotype 2001 PWColl No. 022 was recommended as stable source of resistance against this important disease.]]>Ali, M.E.K. and H.L. Warren,1987Colletotrichum graminicola on sorghum.]]>71402404Benson, D.M., L.F. Grand, C.S. Vernia and T.R. Gottwald,20069011711180Browning, M., L.V. Rowley, P. Zang, J.M. Chandlee and N. Jackson,1999Colletotrichum graminicola isolates from Poaceae.]]>83286292Cardwell, K.F., P.R. Hepperly and R.A. Frederiksen,1989Colletotrichum graminicola and seed transmission of sorghum anthracnose.]]>73255257Casela, C.R. and R.A. Frederiksen,1993Colletotrichum graminicola sclerotia in sorghum stalk residues.]]>77825827Casela, C.R., R.A. Frederiksen and A.S. Ferreira,199377908911Casela, C.R., F.G. Santos and A.S. Ferreira,2001Colletotrichum graminicola.]]>26197200Central Statistical Agency (CSA),20092009Chala, A., M.B. Brurberg and A.M. Tronsmo,2007513Dogget, H.,19801980pp: 33-35pp: 33-35Erpelding, J.E. and L.K. Prom,200436571Erpelding, J.E. and L.K. Prom,200652834Erpelding, J.E. and M.L. Wang,20076127133Estrada, A.B., J.C. Dodd and P. Jeffries,2000Colletotrichum gloeosporioides.]]>49608618Ferreira, A.S. and H.L. Warren,1982Colletotrichum graminicola.]]>66773775Food and Agricultural Organization (FAO),20092009Gwary, D.M. and S.W. Asala,20068309312Harikrishnan, R. and L.E. del Rio,2008924246Harris, H.B., B.J. Johnson, J.W. Dobson Jr. and E.S. Luttrell,19644460462Hess, D.E., R. Bandyopadhyay and I. Sissoko,20028613741382Hulluka, M. and J.P.E. Esele,19921992pp: 21-24pp: 21-24Latha, J., A. Charkrabarti, K. Mathur, V.P. Rao, R.P. Thakur and P.K. Mukherjee,2003Colletotrichum gramicola isolates from India revealed by restriction analysis of PCR-amplified intergenic spacer region of the nuclear rDNA.]]>84881883Madden, L.V., G. Hughes and F. van den Bosch,2008pp: 107pp: 107Marley, P.S.,2004Sorghum bicolor) in the Nigerian Northern Guinea Savanna.]]>142345350Marley, P.S., R.P. Thakur and O. Ajayi,2001Colletotrichum sublineolum of sorghum in Nigeria.]]>69133142Mehta, P.J., C.C. Wiltse, W.L. Rooney, S.D. Collins and R.A. Frederiksen et al.,20059319Mouen-Badimo, J.A., D. Bieysse, C. Cilas and J.L. Notteghem,2007Colletotrichum kahawae on a pot scale.]]>9112291236Mukuru, S.Z.,19931993pp: 55-62pp: 55-62Ngugi, H.K., A.M. Julian, S.B. King and B.J. Peacocke, 2000Colletotrichum sublineolum) and leaf blight (Exserohilum turcicum) in Kenya.]]>49129140Olatinwo, R.O., K.F. Cardwell, M.L. Deadman and A.M. Julian,1999Stenocarpella macrospora (Earle) Sutton on maize in the mid-altitude zone of Nigeria.]]>147347352Pande, S., R. Harikrishnan, M.D. Alegbejo, L.K. Mughogho, R.I. Karunakar and O. Ajayi,199339297303Park, S.D., K.S. Park, K.J. Kim, J.C. Kim, J.T. Yoon and Z. Khan,20051534851Pastor-Corrales, M.A. and R.A. Frederiksen,19801980pp: 289-294pp: 289-294SAS,2003Version 9.1.,Somda, I., V. Leth and P. Sereme,20073218223Sutton, B.C.,1980Pages: 696Pages: 696Tarekegn, G., N.W. McLaren and W.J. Swart,200655238245Thakur, R.P. and K. Mathur,20002000pp: 10-12pp: 10-12Thomas, M.D., I. Sissoko and M. Sacko,199680151153Warren, H.L.,19861986pp: 10-11pp: 10-11Neya, A. and M. le Normand,1998Colletotrichum graminicola) under field conditions in Burkina Faso.]]>174753