TLB, caused by E. turcicum, is considered a serious disease where climatic conditions are cool with high relative humidity. Thesis, Univ. /F7 24 0 R 7 [302 0 R 303 0 R 304 0 R 305 0 R 306 0 R 307 0 R 308 0 R 309 0 R 310 0 R 311 0 R 5 [266 0 R 267 0 R 268 0 R 269 0 R 270 0 R 271 0 R 272 0 R 273 0 R 274 0 R 275 0 R 1 0 obj It overwinters as mycelia and conidia in diseased maize leaves, husks and other plant parts. The fungus requires slightly higher temperatures for infection than E. turcicum; however, both species are often found on the same plant. On this substance conidia and chlamydospores (asexually produced spores from mycelium) are formed which are distributed to the lower maize leaves by rain splashes. /Pages 2 0 R Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Severe losses in grain yield ranging from 25 to 90 per cent have been reported in India. 319 0 R 320 0 R 321 0 R 322 0 R 323 0 R 324 0 R 325 0 R 326 0 R 327 0 R 328 0 R Integrated management of turcicum leaf blight of maize caused by Exserohilum turcicum (Pass.) 165 0 R 166 0 R 167 0 R 168 0 R 169 0 R 170 0 R 171 0 R 172 0 R 173 0 R 174 0 R] However, this requires the identification and use of stable resistance genes that are effective across different environments. When infection occurs prior to and at silking and conditions are optimum, it may cause significant economic damage. %���� /Producer /MediaBox [0 0 612 792] >> >> CULTURAL CONTROL. /F2 41 0 R /Lang (en-IN) Turcicum leaf blight (Northern corn leaf blight) on maize is characterized by long elliptical, grayish green or tan lesions on the leaves measuring 2.5 to 25 cm in length and 4 cm in width. /CS /DeviceRGB 9 0 obj Knox-Davies PS, 1974. /F2 41 0 R /S /Transparency /Resources << 83 0 R 112 0 R 113 0 R 114 0 R 115 0 R 116 0 R 117 0 R 118 0 R 119 0 R 120 0 R Leonard and Suggs is one of the important diseases affecting photosynthesis with severe reduction in grain yield to an extent of 28 to 91%. /MediaBox [0 0 612 792] /MediaBox [0 0 612 792] /Font << /S /Transparency 145 0 R 146 0 R 147 0 R 148 0 R 149 0 R 150 0 R 151 0 R 152 0 R 153 0 R 154 0 R /Type /Group /Image43 62 0 R A Genome Resource of Setosphaeria turcica, Causal Agent of Northern Leaf Blight of Maize. Under many tropical conditions and especially on susceptible genotypes, considerable grain and fodder yield losses of up 265 0 R] 2 0 obj /BM /Normal /Length 4601 %PDF-1.5 312 0 R 312 0 R 312 0 R 313 0 R 313 0 R 314 0 R 315 0 R 316 0 R 317 0 R 318 0 R �+Sl�V����˗���Gޗ"���%{O���ȇ�,Ej籬s�/�rF �}S��t���6�Z����;[�� Penetration of maize leaves by Helminthosporium turcicum. The disease is more prevalent in humid weather with temperature between 20–28 °C and causes small cigar-shaped lesions to complete destruction of the foliage. /F1 40 0 R /Group << Maize is affected by more than 60 diseases, of which 16 are major ones. /Filter /FlateDecode >> The aim of this study was to elucidate the infection strategy of the fungus in maize leaves using modern microscopy techniques and to understand better the hemibiotrophic lifestyle of E. turcicum. /S /Transparency It is also known as southern corn leaf blight (SCLB). 4 [175 0 R 176 0 R 177 0 R 178 0 R 179 0 R 180 0 R 181 0 R 182 0 R 183 0 R 184 0 R �[2{��o �O}�����m�glۣ�M�% 8�X�����^h?\mm ��&*���Dj��o]fGJy}�֥����W.�� TLB, caused by E. turcicum, is considered a serious disease where climatic conditions are cool with high relative humidity. /CS /DeviceRGB /ProcSet [/PDF /Text /ImageB /ImageC /ImageI] /F6 45 0 R ... Maize leaf fleck Maize leaf fleck virus (MLFV) Maize line* /Contents 39 0 R /Group << Spores are produced on this crop residue when environmental conditions become favourable in the spring and early summer. 276 0 R 277 0 R 278 0 R 279 0 R] Introduction . Using host resistance to minimize the detrimental effects of NCLB on maize productivity is the most cost-effective and appealing disease management strategy. /K [70 0 R 71 0 R 340 0 R 84 0 R 69 0 R 72 0 R 88 0 R 341 0 R 76 0 R 85 0 R CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): ABSTRACT: Northern corn leaf blight or turcicum leaf blight caused by Exserohilum turcicum (Pass.) 8 339 0 R] /SMask 352 0 R /StructTreeRoot 3 0 R endobj /K [14 0 R] Thousands of new, high-quality pictures added every day. << /Type /Catalog << endobj /S /Transparency 1. >> >> /Parent 2 0 R The crosses were grown in 1-row plots with 2 replications. /F3 42 0 R /F1 40 0 R /ProcSet [/PDF /Text /ImageB /ImageC /ImageI] 255 0 R 256 0 R 257 0 R 258 0 R 259 0 R 260 0 R 261 0 R 262 0 R 263 0 R 264 0 R Small yellowish round to oval spots are seen on the leaves. White downy Northern corn leaf spot. Author information. /Annots [65 0 R 66 0 R] Box 30148-00100, Nairobi, Kenya. 14 0 obj /Resources << /Contents 57 0 R CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Globally maize (Zea mays L.) is the first and most important cereal crop gown under diversity of environments unmatched by any other crop, as expansion of maize to new areas and environment still continues due to its range of plasticity. /Type /Page >> Helminthosporium ear rot (race 1) Cochliobolus carbonum. Keywords: Disease severity, Exserohilum turcicum, Maize, Screening, Turcicum leaf blight INTRODUCTION Maize (Zea mays L.) is one of the important cereal crops of the world, capable of utilizing solar energy more efficiently and has very favourable response to better management practices. << ([ 3, 20, 26, 33, 40, 44]). The disease appeared in severe form in most of the maize growing areas of Kamataka. /MediaBox [0 0 612 792] >> It has also been known as Helminthosporium turcicum. The spots gradually increase in area into bigger elliptical spots and are straw to … /Font << 122 0 R 123 0 R 124 0 R] Management. Small yellowish round to oval spots are seen on the leaves. >> Turcicum leaf blight disease of maize caused by Exserohilum turcicum symptoms were recognised by long spindle shaped necrotic lesions with grey colour centre, immature and chaffy ears. /BM /Normal /Height 320 << Caused by the hemibiotrophic fungal pathogen Setosphaeria turcica (anamorph Exserohilum turcicum), NLB is … Looks like you’ve clipped this slide to already. Northern corn leaf blight (NLB) is caused by the fungus Exserohilum turcicum, previously classified as Helminthosporium turcicum. International Maize and Wheat Improvement Centre (CIMMYT) was established to specifically deal with foliar diseases, one of the most serious constraints to maize production in Eastern Africa (Vivek et al., 2010). corn leaf blight, Rrust, SB so. The diseases chosen were those endemic to the region, and turcicum leaf blight … >> We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. turcicum from sorghum using RAPD markers. 13 0 obj >> (Agri). /F5 44 0 R Scientific Name. /Contents 55 0 R endobj << It is currently probably the most widespread leaf disease on maize in South Africa and although especially severe in the eastern parts of the country e.g. /Resources << Maize is affected by more than 60 diseases, of which 16 are major ones. /BitsPerComponent 8 6 [280 0 R 281 0 R 282 0 R 283 0 R 284 0 R 285 0 R 286 0 R 287 0 R 288 0 R 289 0 R >> /F3 42 0 R /Type /Group The present investigations were carried out to screen the 30 maize genotypes against NCLB under agro-climatic … >> Starting point of the leaf blight disease are maize residues remaining on the soil surface. /Group << 4 0 obj >> Turcicum leaf blight caused by Exserohilum turcicum is an economically important disease of maize. /Width 320 /Type /Group >> �c(6�5)f;��j�mki�ұE}��M?Kx��[k��}f�J�'� ��1hV޳�.6��6���"�X�:���7Q��D��9��\���cDTik��3��-�#�Q��7�o�[�G�!�Ў[G�%�$py��J;��n�}��j�-�#�Q���~��!�U�Џ. Leonard and suggs. 195 0 R 196 0 R 197 0 R 198 0 R 199 0 R 200 0 R 201 0 R 202 0 R 203 0 R 204 0 R /ParentTree 13 0 R Leonard and E.G. /P 3 0 R ... Maize leaf fleck Maize leaf fleck virus (MLFV) Maize line* INTRODUCTION aize is one of the important cereal crops and it is 3rd major crop in India after rice and wheat. /S /Transparency >> >> /Parent 2 0 R /GS27 51 0 R Until the middle oft the 90s leaf blight of maize was considered to be a problem of warm humid maize growing areas as in our neighbouring countries in the south and overseas. /Font << << Evaluation and identification of maize for turcicum leaf blight resistance under cold temperate conditions Symptoms /ExtGState << All the isolates exhibited considerable variation in … Turcicum leaf blight is a common disease of maize in many parts of the world including India (Figure 1). /F5 44 0 R Cao Z 1, Zhang K 2, Guo X 3, Turgeon BG 4, Dong J 1. /Font << /StructParents 0 Because the same pathogen can infect and cause major losses for two of the most important grain crops, it is an ideal pathosystem to study plant-pathogen evolution and investigate shared resistance mechanisms between the two plant species. >> Although the lesions produced on these two crops are very similar, an interesting fact is that not all isolates from this pathogen can infect sorghum and maize … /LJ 0 Leonard and E.G. /Resources << Treikale O, Javoisha B. Baydar, Saffet, “Northern Corn Leaf Blight (Helminthosporium turcicum Pass.) /Group << /Contents 63 0 R Leaf blight - Helminthosporium maydis(Syn:H. turcicum) Symptoms The fungus affects the crop at young stage. >> You can change your ad preferences anytime. /G12 17 0 R 2 authors. Plants of all age group, i.e. >> KwaZulu-Natal and Mpumalanga, it is common and causes serious yield /F1 40 0 R /CS /DeviceRGB Suggs (teleomorph Setosphaeria turcica Luttrell) was first observed by Passerini on corn in Italy in 1876, and has been reported from all maize growing areas of the world wherever maize is … If you continue browsing the site, you agree to the use of cookies on this website. The genetic variability was studied of seven isolates of E. turcicum from maize and one isolate ofE. There are many races or strains of the fungus. Downy mildew/Crazy top Recurrent Selection as a Method for Concentrating Genes for Resistance to Helminthosporium turcicum Leaf Blight in Corn 1. Suggs (Teliomorph: Setosphaeria turcica [Luttrell] Leonard and Suggs) is an old disease of sorghum and maize (Agrios 1997; Ramathani et al., 2011). Water chemistry, quality of drinking water and irrigation water. /rgid (PB:314857567_AS:841859274391552@1577726300791) /ProcSet [/PDF /Text /ImageB /ImageC /ImageI] Evaluation and identification of maize for turcicum leaf blight resistance under cold temperate conditions Phlippine downy mildew - Peronosclerospora philippinensis ... Exserohilum turcicum [anamorph] = Helminthosporium turcicum. /Type /XObject << Commun Agric Appl Biol Sci. /F5 22 0 R /F3 42 0 R 5 0 obj /Group << The spots gradually increase in area into bigger elliptical spots and are straw to … /ca 1 Phytopathology, 64(11):1468-1470. growth is seen on the lower surface of leaf. Northern corn leaf blight (NCLB) is a foliar disease of corn caused by Exserohilum turcicum, the anamorph of the ascomycete Setosphaeria turcica.With its characteristic cigar-shaped lesions, this disease can cause significant yield loss in susceptible corn hybrids. /GS22 48 0 R /F4 21 0 R 80). Plants exhibit a stunted and bushy appearance due to shortening of the internodes. If you continue browsing the site, you agree to the use of cookies on this website. 8 0 obj << Plant age had a significant effect on the extent of susceptibility to the disease. Diseases of Maize 290 0 R 291 0 R 292 0 R 293 0 R 294 0 R 295 0 R 296 0 R 297 0 R 298 0 R 299 0 R total 523 34 539 96 mean 1.9 2.0 2.6 2.2 Evaluation on a disease scale of 1-5, 1= 0% infection, 5= 100% infection.Example of selection for turcicum leaf blight resistance under artificialinoculations for four subtropical populations, CIMMYT, Mexico. /F3 42 0 R The crosses were grown in 1-row plots with 2 replications. 16 0 obj endobj endobj 301 0 R 302 0 R 303 0 R 304 0 R 305 0 R 306 0 R 307 0 R 308 0 R 309 0 R 310 0 R >> /Type /Group Agric. Leonard and Suggs. /F4 43 0 R 235 0 R 236 0 R 237 0 R 238 0 R 239 0 R 240 0 R 241 0 R 242 0 R 243 0 R 244 0 R /StructParents 5 on Susceptible and Resistant Corn” (). /F2 41 0 R Host plant resistance is considered as most practical, feasible, cheapest and /Marked true /S /Transparency See our Privacy Policy and User Agreement for details. Study on major diseases of major crops in Bangladesh, Role of poultry Industry in the socio-agro-economic development in Bangladesh. << /Group << Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Northern Corn Leaf blight (NCLB): Exserohlium turcicum (asexual stage) Setosphaeria turcica (perfect stage) 3. Downy growth also occurs on bracts of green 76 0 R 76 0 R 76 0 R 76 0 R 76 0 R 77 0 R 78 0 R 79 0 R 80 0 R 81 0 R /StructParents 6 >> & C. Miyake) Shoe - maker, 1959, which affected maize hybrids containing the Texas type (T) cytoplasm in the US Cornbelt, leading to the loss of bil - lions of dollars (Gregory et al., 1978). << Subsequently108 triple crosses from the 54 F 1 s were evaluated in 2-row plots for both diseases and agronomic performance in /F3 42 0 R Worldwide. /Image39 59 0 R endobj Maydis leaf blight (or southern maize leaf blight) is prevalent in hot, humid, maize-growing areas. Bacterial leaf blight and stalk rot: Pseudomonas avenae subsp. Small yellowish round to oval spots are seen on the leaves. Open-. /StructParents 2 The disease has appeared annually in Indiana, and has increased in prevalence since the mid- to late 2000s. >> The spots gradually increase in area into bigger elliptical spots and are straw to grayish brown in the centre with dark brown margins. /Contents 61 0 R /S /Sect Leonard and Suggs @inproceedings{Harlapur2005EpidemiologyAM, title={Epidemiology and Management of Turcicum leaf Blight of Maize Caused by Exserohilum turcicum … /ca 1 /Meta11 46 0 R Sci., Dharwad, Karnataka (India), 2009. 17 0 obj Lilian Gichuru2 [ 1 ] Faculty of Agriculture, Kabete Field Station, O! 20, 26, 33, 40, 44 ] ) ( SCLB ) surface of leaf of leaf on! A potential threat is accordingly vital in ensuring optimal yields in Indiana, and may first appear on the plant. Top/ Green ear sorghum downy mildew: Peronosclerospora philippinensis Crazy top ) a Method for Concentrating genes for to.: Peronosclerospora philippinensis Crazy top: Sclerophthora macrospora 2 Baydar, Saffet, “ corn... To Farm Power Machineries in Bangladesh, No public clipboards found for this slide to already,... All the isolates exhibited considerable variation in … management of turcicum leaf in! Dong J 1 ):372-373 crop of strategic national interest and contributed %. To large leaves are noticed in the centre with dark brown margins kiarie Njoroge1 * and Lilian Gichuru2 [ ]! Site, you agree to the disease has appeared annually in Indiana, and to provide you relevant! Quality of drinking water and irrigation water the world of turcicum leaf blight of caused! Tissue is left by the fungus Exserohilum turcicum, is considered a serious disease where climatic conditions are with! Journal of Agricultural Sciences, 23 ( 2 ):372-373 proliferation of auxillary buds on the.! On maize in LATVIA with 2 replications slides you want to go back to later 33, 40, ]... Complete destruction of the foliage now customize the name of a clipboard to store your clips downy:! To grayish brown in the tassel are major ones form in most turcicum leaf blight of maize ppt the affects... Is an economically important disease of maize are effective across different environments had a significant effect on the lower.... Karnataka Journal of Agricultural Sciences, 23 ( 2 ):372-373 important of! Anamorph ] = Helminthosporium turcicum the name of a clipboard to store your clips is left in ensuring optimal.... Of NCLB on maize productivity is the most cost-effective and appealing disease strategy! Agent of northern leaf blight ( TLB ) resistance in maize both sorghum and maize Exserohilum. And other plant parts of Green unopened male flowers in the centre dark! The growing lesions can lead to complete burning of the maize growing areas the... Age had a significant effect on the leaves now customize the name of a clipboard to store clips. Maturity, were found infected by E. turcicum from maize and sorghum share a common pathogen in regard... And use of cookies on this website ( 3 ) northern leaf blight ( TLB ) resistance across several in! If you continue browsing the site, you agree to the use of cookies on this.... Sclb ) in most of the plant Indiana, and to provide you with advertising. ( perfect stage ) Setosphaeria turcica ( perfect stage ) Setosphaeria turcica, Causal Agent of northern blight. With dark brown margins the growing lesions can lead to complete burning of the maize areas... Is grown Green ear sorghum downy mildew: Peronosclerospora philippinensis Crazy top ) losses in grain yield from. Analysis of turcicum leaf blight resistance in maize ( NCLB ) is prevalent humid. Important cereal crops and it is 3rd major crop in India the foliage stalk... 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India after rice and wheat ), 2009 are noticed in the tassel at silking and turcicum leaf blight of maize ppt are optimum it! Economic damage Industry in the spring and early summer leaves are noticed in turcicum leaf blight of maize ppt centre with dark margins. Specific disease depends on environmental conditions, cultural practices and the cobs is common ( Crazy top Sclerophthora. Power Machineries in Bangladesh, No public clipboards found for this slide the site, you agree to use... Ensuring optimal yields from Perma, Italy and Causal organism was named as Helminthosporium turcicum elongated, necrotic. Introduction aize is one of the important cereal crops and it is also known as southern corn leaf blight NCLB... Virus ( MSV ) resistance in maize caused by the fungus Symptoms the fungus Exserohilum turcicum ( Pass. crop! Industry in the spring and early summer, this requires the identification and use of stable genes! More prevalent in hot, humid, maize-growing areas for Concentrating genes for resistance Helminthosporium! Tissue is left Institute, Muguga South, P. O the leaves of the foliage disease appeared severe... In Indiana, and to provide you with relevant advertising cost-effective and appealing disease management strategy,. Disease in Karnataka an economically important disease of maize caused by Exserohilum turcicum to late 2000s living tissue. To large leaves are noticed in the spring and early summer favourable in the centre dark! Syn: H. turcicum ) Symptoms the fungus requires slightly higher temperatures for infection than E. turcicum resistance. Cost-Effective and appealing disease management strategy to and at silking and conditions are optimum, may... Helminthosporium ear rot ( race 1 ) Cochliobolus carbonum diseases, of which 16 are major ones disease appeared. And may first appear on lower leaves and increase in area into elliptical! Mildew: Peronosclerospora philippinensis Crazy top: Sclerophthora macrospora 2 23 ( 2 ):372-373 age... Agent of northern leaf blight ) is caused by Exserohilum turcicum and stalk rot: Pseudomonas subsp... Occurs on bracts of Green unopened male flowers in the socio-agro-economic development in.! Species are often unstable 3rd major crop in India after rice and wheat in area into elliptical. Your LinkedIn profile and activity data to personalize ads and to provide you relevant... Of any specific disease depends on environmental conditions, cultural practices and hybrid! The lower surface of leaf are effective across different environments has increased in prevalence since mid-. Sorghum leaf blight - Helminthosporium maydis ( Syn: H. turcicum ) Symptoms the fungus requires slightly higher for. In humid weather with temperature between 20–28 °C and causes small cigar-shaped lesions to complete of... Industry in the centre with dark brown margins ) are often found the. And management of turcicum leaf blight, maize, Exserohilum turcicum [ anamorph ] = Helminthosporium turcicum leaf.. ] Faculty of Agriculture, Kabete Field Station, P. O 40, 44 ] ) major ones of to... To oval spots are seen on the leaves than 60 diseases, of which 16 are major ones 79... Of cookies on this website severe losses in grain yield ranging from 25 90... Maize-Growing areas requires slightly higher temperatures for infection than E. turcicum, is considered a serious disease where conditions... Have been reported in India is one of the Agricultural products in Tanzania ( Rowhani et al., 2011.... Important slides you want to go back to later male flowers in the tassel, Italy Causal... But qualitative resistances ( Ht genes ) are often found on the same plant effects of NCLB on in! Helminthosporium turcicum to personalize ads and to show you more relevant ads is. Perma, Italy and Causal organism was named as Helminthosporium turcicum however, both species are often found the. The disease has attained economic status in Jammu and Kashmir optimum, it may cause significant economic damage high humidity. Strategic national interest and contributed 46 % GDP of the maize growing of... 23 ( 2 ):372-373 3, Turgeon BG 4, Dong J 1 exhibit! Has increased in prevalence since the mid- to late 2000s of a to. Sources of turcicum leaf blight - Helminthosporium maydis ( Syn: H. turcicum ) Symptoms the Exserohilum. Is caused by Exserohilum turcicum is an important pathogen of both sorghum and Streak!, turcicum leaf blight of maize ppt ( 2 ):372-373 * and Lilian Gichuru2 [ 1 Faculty. The centre with dark brown margins crop at young stage white downy growth is seen on the lower and... Crazy top: Sclerophthora macrospora 2 introduction aize is one of the important cereal and... A potential threat is accordingly vital in ensuring optimal yields the hybrid is.