M. Ashraf Ahangar Z. A. Bhat F. A. Sheikh Z. A. Dar Ajaz A. Lone K. S. Hooda Malik Reyaz


Turcicum leaf blight of maize incited by Exserohilum turcicum (Pass.) Leonard and Suggs is the major limiting factor of maize production in temperate agro-ecologies. Disease management through host plant resistance is the most effective strategy. In the present study among 26 maize genotypes which were initially screened for resistance against E. turcicum under field conditions, 8 genotypes viz., PS 39, CML 451, CML 470, CML 472, VL 1030, VL 1018140, VL1018527 and SMI178-1 were found resistant when screened against twelve isolates of E. turcicum under artificial epiphytotic conditions. Eight genotypes viz., PS45, CML165, CML459, VL1249, VL0536, SMC-5, SMC-3 and KDL 211 were found moderately resistant with disease grade ranged from 2.1-2.5. These maize genotypes possess resistance to turcicum leaf blight can be used successfully in developing high yielding early maturing varieties for high altitude temperate agro-ecologies. The fungus E. turcicum is highly variable in nature. Variability studies on pathogenicity were conducted on twelve isolates of E. turcicum on eleven putative differential maize lines. During the present study a wide pathogenic variation was observed among the twelve isolates of E. turcicum. Cluster analysis on the basis of similarity or dissimilarity in reaction types exhibited by the differential hosts, clustered the isolates into 6 pathogenic groups. The isolates belonged to higher altitudes (Kti 10, Kti11, Kti5) were found to be more aggressive as compared to the isolates of low altitude areas.


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Exserohilum turcicum, Maize, TLB resistance, Variability

Abebe, D. and Singburaudom, N. (2006). Morphological, Cultural and Pathogenicity variation of Exserohilum turcicum (Pass) Leonard and Suggs Isolates in Maize (Zea mays L.). Kasetsart Journal of Natural Science, 40: 341-352.
Aci, M.M., Revilla, P., Morsli, A., Djemel, A., Belalia, N., Kadri, Y., Saloui, M., Ordás, B. and Khelifi, L.(2013). Genetic diversity in Algerian maize (Zea mays L.) landraces using SSR markers. Maydica, 58:304-310.
Agrios, G.N. (2005). Plant Pathology. Harcourt Asia PTE Ltd, Orchard road, Singapore, 583.
Babita, C. and Mani, V.P. 2011 Screening for Resistance against Northern Corn Leaf Blight (Exserohilum turcicum (Pass.) K.J. Leonard and Suggs) in temperate maize lines. Indian Journal of Plant Genetic Resources 24(3): 343-345.
Bunker, R.N. and Mathur, K. (2010). Pathogenic and morphological variability of Exserohilum turcicum isolates causing leaf blight in sorghum (Sorghum bicolor). Indian Journal of Agricultural Sciences, 80(10): 888-892.
Bunker, R.N., Rathore, R.S. and Kumawat, D.K. (2011). Pathogenic and morphological variability of Bipolaris maydis incitant of maydis leaf blight in maize. Jounal of Mycology and Plant pathology, 41: 418-421.
Bunkoed, W., Kasam, S., Chaijuckam, P., Yhamsoongnern, J. and Prathuang, W. (2014). Sexual Reproduction of Setosphaeria turcica in natural corn fields in Thailand. Kasetsart Journal of Natural Sciences, 48:175-182.
Chandrashekara, C., Jha, S.K., Arukumar, R. and Agrawal, P.K. (2014). Identification of new sources of resistance to turcicum leaf blight and maydis leaf blight in maize (Zea mays L.). SABRAO Journal of Breeding and Genetics, 46 (1): 44-55.
De-Rossi, R.L., Reis, M.L. and Brustalin, R. (2015). Fungal baseline for mycelia sensitivity of Exserhilum turcicum, causal agent of northern corn leaf blight. Summa Phytopathologica 41(1): 25-30.
Li, B. and Wilson, W.A. (2013). Composition and methods for enhancing resistance to northern leaf blight in maize.US Patent 2013006135 5 www.freepatentsonline.com.
Nwanosike M. R. O., Mabagala R. B, Kusolwa P. M. (2015). Effect of Northern Leaf Blight (Exserohilum Turcicum) Severity on Yield of Maize (Zea Mays L.) in Morogoro, Tanzania. International Journal of Science and Research, 4(9): 465-474.
Muiru, W.M., Charles, A.K., Kimenju, J.W., Njoroge, K. and Miano, D.W. (2015). Evaluation of resistance reaction of maize germplasm to common foliar diseases in Kenya. Journal of Natural Sciences Research, 5(1): 140-145
Muriithi, L.M. and Mutinda, C.J. (2001). Genetic variability of maize genotypes for resistance to Exerohilum turcicum in Kenya. In: Seventh Eastern and Southern Africa Regional Maize Conference, 106-109.
Reddy, T.R., Reddy, P.N. and Reddy, R.R. (2013). Pathogenic variability of isolates of Exserohilum turcicum, incitant of leaf blight of maize. Indian Journal of Plant Protection, 41(1): 72-75
Shekhar, M. and Kumar, S. (2012). Inoculation methods and disease rating scales for maize diseases. Directorate of Maize Research, Indian Council of Agricultural Research, New Delhi, 31.
Singh, R., Mani, V.P., Koranga, G.S., Bisht, R.S., Khandelwal, P., Bhandari and Pant, S.K. (2014). Identification of additional sources of resistance to Exserohilum turcicum in maize (Zea mays L.). SABRAO Journal of Breeding and Genetics, 36 (1): 45-47.
Thakur, R., Rao, V.P.W.B.M., Mathur, K., Tailor, H.C., Kushwaha, R.S., Dwivedi, R.R., Hiremath, R.V. and Indira, S. (2007). Genetic resistance to foliar anthrcnose in sorghum and pathogenic variability in Colletotrichum graminicola. Indian Phytopathology, 60: 13-23.
Tuite, J., (1969). Plant pathological Methods, Fungi and Bacteria. Burges Publishing Company, USA.
Zhang, J., Wo, Y., Ho, H., Lu, C. and He, Y. (2013). Cultural characteristics and pathogenic variation among Cochliobolus carbonum isolates in Yunnan province of China. Journal of Plant Pathology and Microbiology, 4: 210-213.
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Ahangar, M. A., Bhat, Z. A., Sheikh, F. A., Dar, Z. A., Lone, A. A., Hooda, K. S., & Reyaz, M. (2016). Pathogenic variability in Exserohilum turcicum and identification of resistant sources to turcicum leaf blight of maize (Zea mays L.). Journal of Applied and Natural Science, 8(3), 1523-1529. https://doi.org/10.31018/jans.v8i3.994
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