Gray leaf spot (GLS), caused by Cercospora zeae-maydis and Cercospora zeina, is one of the most important diseases of maize worldwide.The pathogen has a necrotrophic lifestyle and no major genes are known for GLS. profit organization that conducts research and training related to maize and wheat throughout the developing world. Maydis leaf blight disease of maize causes considerable losses to the maize crop. Studies were conducted at the Research Farm of NWFP Agricultural University, Peshawar, during 2006 to determine the effect of different levels of nitrogen on various maize cultivars against maize leaf blight caused by Bipolaris maydis (Nisik) Shoemaker. Spray of Mancozeb 75% WP @ 1.5 to 2 kg/l of water or Zineb 75% WP @ 1.5-2 kg/ha at first appearance of pustule of Polysora rust or Common rust and three sprays of fungicide at 15 days interval are recommended if needed. According to disease severity scale (0–5) inbreds SP-3 and NCML-73 were found highly resistant; Local-W moderately resistance and rest of the genotypes were least resistance in in vitro analysis. Also, the year have a significant effect on the all studied traits. As they mature they elongate. Quantitative resistance, although poorly understood, is important for GLS management. A detached leaf assay (DLA) was developed to rapidly assess maize resistance to SCLB. Stripping of lower leaves along … Use of Texas male‐sterile cytoplasm (T) in the production of hybrids was an important factor in the severity and spread of SCLB. Survey was conducted to determine the prevalence, incidence and severity of foliar maize diseases in North Gondar Zone. revealed that maydis leaf blight maize was prevalent in all the maize growing areas of the northern Karnataka in low to severe form with the severity ranging from 27.88 to 50.26 per cent. Committee; 2013 ; View 3 excerpts, cites background; Save. (54):623-628 Field trials conducted by Issa (1983) in Brazil revealed that mancozeb @ 2 kg ha-1 as foliar spray was found to be effective in reducing turcicum leaf blight severity in maize… Significantly maximum conidial germination recorded in Sucrose 5% at 36 hours of incubation (93.42%). 44 0 obj [Internat. Special features: Short duration (80-85 days), attractive orange grain colour, high yielding female line, tolerant to Turcicum leaf blight, maydis leaf blight, curvularia leaf spot, and Banded leaf and sheath blight diseases, due to short duration it can be fit in many cropping system, responsive to high inputs. Several sources of resistance roughly equivalent to the high level of resistance available from NC250 were identified. An investigation was undertaken on loss assessment and host plant resistance against maydis leaf blight of maize caused by Bipolaris maydis (Nisikado) Shoemaker at Main Agricultural Research Station, UAS, Dharwad. 2 No. Maize is vulnerable to numerous diseases at various growth stages in the field as well as during storage. Abstract Southern corn leaf blight (SCLB), caused by the fungus Bipolaris maydis, is a disease that signifi-cantly affects maize productivity across the globe. 19. Cross HKI 209 x HKI 193-2-2, HKI 488-1RG x HKI 164D-4-(O) and HKI 325-17AN x HKI 164D-4-(O) were found to have duplicate type of epistatis. The isolation was carried out from the infected leaves of maize Maximum disease severity was observed in Ranebennur (50.26%) followed by Haveri (48.60%). & Ev.) Instead of t, relationship individually, the joint scaling test, the six generation mean to which the model was fitted, was not known in equal precision, the generat, means and their expectations were weighted using, fit was conducted using chi-square statis, the models were considered adequate. Farmers in the study area (46.7%) indicated TLB as the major leaf disease on maize. Genotype NS 444 ultra statistically had the lowest DMY (17.8 ton ha-1), GPC (9.29%) and PY (925.0 kg ha-1). Abstract. J 1006. Research Feed. Causal organism: Rhizoctonia solani. All figure content in this area was uploaded by J Biotechnology Crop Science, All content in this area was uploaded by J Biotechnology Crop Science on Oct 03, 2019, Omprakash, Rajesh Singh, Rajeshwar Nandan, Dan Singh Jakhar, KN Chourasia, Southern Corn Leaf Blight (SCLB) incited by, to 5 is being used by CIMMYT pathologist was considered ap, Disease Index (PDI) and Area under Disease Progressive curve (AUDPC) considered as disease trait for screening of maize, germplasm as well as estimation of Genetics of SCLB. %���� Principal component analysis (PCA) revealed that grain yield (GY) is negatively correlated with TLB and MLB. 8th, Rai D, Kumar A, Kumar M, Prasad R (2009) Field, Randjelovic V, Prodanovic S, Tomic Z, Simic A, of Maize: An Extension Fact Sheet. Metrics details. Leaf blight, stalks rot, seedling blight and smuts are the most important diseases of corn crop (Hafiz, 1986). Graminicola downy mildew Sclerospora graminicola: Java downy mildew Peronosclerospora maydis = Sclerospora maydis … As per the USDA report of May, 2016, the world maize production has been estimated about 96.88 crore tonnes in 2015-16 which is 4.6 per cent lower than last year (101.35 crore tonnes). Abstract. Maydis leaf blight (MLB) caused by Bipolaris maydis [(Nisikado and Miyake) Shoem] is one of the major diseases of maize. The results of analysis revealed that all the characters like days to 50% pollen shedding, days to 50% silking, plant height, ear height, 100 grain weight, harvest index and grain yield were significantly affected due to various maize genotypes. In cluster III, most of the inbred were highly susceptible to TLB and moderately resistant to MLB with low yielding lines. All rights reserved. ) 37) The leafy stalk of the plant produces pollen inflorescences and separate ovuliferous inflorescences called ears that yield kernels or seeds, which are fruits. Twelve inbred lines were found resistant against TLB, 19 inbred lines exhibited resistance against MLB and 10 inbred lines found resistant to both TLB and MLB. The investigation on maydis leaf blight (MLB) of maize caused by Drechslera maydis (Nisikado) Subram and Jain, comprised of disease survey, pathogen variability studies, evaluation of fungicides, bioagents, phytoextracts and field management of the disease were conducted during kharif and rabi 2011 at Main Agricultural Research Station, University of Agricultural Sciences, Dharwad. Leonard and Suggs @inproceedings{Harlapur2005EpidemiologyAM, title={Epidemiology and Management of Turcicum leaf Blight of Maize … Foliar Spray at first appearance of leaf blight with Mancozeb 75% WP @ 1.5 to 2 kg/l of water followed by 2 to 4 applications at 10 days interval if needed. Project Title: Development of IDM strategy for Maydis leaf blight and Banded leaf and sheath blight of maize Objectives: To devise cost-effective IDM strategy for MLB and BLSB using suitable integration of effective components and their validation; To develop weather based forewarning models for MLB and BLSB; Project team: Ibikunle. Sasakii) of maize.

Maydis leaf blight (MLB), a serious foliar fungal disease of maize, may cause up to 40% losses in yield. All that generations required for the study, of CM212 x V-336, CM212 x V-338 and CM212 x, CM145 were sown and evaluated in artificial, joint scaling test (Cavalli 1952). The human geneticists of the twenties and thirties were almost entirely confined to various aspects of biometrical genetics dependent on traditional methods of analysis of variance. Nitro Pro 9 (9. The disease is common in humid hot climate especially when maize is repeatedly planted after maize. It was in 1974 that a distribution theory was introduced giving tests of hypotheses in path analysis; emphasis on environmental indices greatly improved the power of resolution between biological and cultural causes of family resemblance (Morton, 1974; Rao, Morton, and Yee, 1974). Fifteen or more eggs/plant were required before yields differed significantly from yields in the uninfested control. is a serious Drechs. estimates of gene effect obtained from six parameter models of Jinks and Jones (1985) in three crosses based on disease score for SCLB in maize. maydis Ell. 45 0 obj Study of generation mean analysis revealed that all three crosses exhibited duplicate type of epistasis. Abstract and Figures Maydis leaf blight (MLB) caused by the fungus Cochliobolus heterostrophus (Drechs.) Disease appears as young small and diamond shaped lesions. The severity of the disease, (AUDPC), however, varied from location to location, conditions, appearance of disease and other fac. Thirty eggs/plant appeared to be preferable for screening maize genotypes for 1st-brood resistance. 5 parental inbred lines (P1 and P2), 6 F1's, their F2 and back crosses (BC1, Join ResearchGate to discover and stay up-to-date with the latest research from leading experts in, Access scientific knowledge from anywhere. are the most important reported maize diseases. Maydis leaf blight disease of maize causes considerable losses to the maize crop. Turcicum leaf blight is a common disease of maize in many parts of the world including India (Figure 1). Studies were conducted at the Research Farm of NWFP Agricultural University, Peshawar, during 2006 to determine the effect of different levels of nitrogen on various maize cultivars against maize leaf blight caused by Bipolaris maydis (Nisik) Shoemaker. ICAR - Indian Institute of Maize Research (ISO 9001:2015 certified) ... Maydis leaf blight (MLB)/ Southern Corn Leaf Blight (SCLB) Causal organism: Biopolaris maydis. NC-2703 (hybrid), NC-2003 (hybrid), SP-3 (inbred line), NCML-73 (inbred line), NRL-6 (inbred line), NRL-4 (inbred line), Soan-3 (variety), Rakaposhi (variety), Margala (variety), EV-1097 (variety), Local-Y (variety), Local-W (variety) were tested against southern corn leaf blight under laboratory and field conditions. Field Screening of Maize Genotypes Against Maydis Leaf Blight Caused by Helminthosporiun maydis Nisicado and Miyake DINESH RAI, AJAY KUMAR, MRITUNJAY KUMAR AND RAJENDRA PRASAD International Journal of Plant Protection, Vol. TRAITS UNDER MAYDIS LEAF BLIGHT (MLB) EPIPHYTOTICS IN MAIZE (Zea mays L.) Farhan Ali1, Hidatyar-ur-Rahman2, Durrishahwar2, Iffat Nawaz2, Mareeya Munir2 and Hidayat Ullah2 1Cereal Crops Research Institute, Pirsabak, Nowshera, NWFP, Pakistan 2Department of Plant Breeding and Genetics, NWFP Agricultural University, Peshawar, Pakistan 0. %PDF-1.4 Drawing on strong science and effective partnerships, CIMMYT works to create, share, and use knowledge and technology to increase food security, improve the productivity and profitability of farming systems, and sustain natural resources. 2Agricultural Research Corporation, P. O. Plant height decreased as eggs per plant increased. 141, CML-140, V-335, HUZM-97-1-2, HUZM-80-1, resistant. The AHC classification will be helpful for selection of disease resistance and high yielding inbred for resistance breeding program. In field screening, Margala, NRL-4, EV-1097 showed maximum resistance followed by moderately resistant SP-3, NCML-73, NC-2703, NRL-6 and Local-Y maize genotypes. The Banded leaf and sheath blight (BLSB) of maize was first reported from Sri Lanka. The experiment was laid out in RCBD with three replications. Maydis leaf blight (MLB) is caused by the ascomycete fungi Bipolaris maydis and is reported from most maize growing regions of the world including India. It is frequently devastated by Turcicum leaf blight, caused by Exserohilum turcicum, leading to … The experiment was conducted to estimate the genetic diversity in 14 different maize genotypes at Agricultural Research Station Baffa, Mansehra Pakistan. Diseases, generations of the 3 crosses were used for gene. The southern corn leaf blight (SCLB) epidemic of 1970, caused by Bipolaris maydis (Nisikado) Shoemaker, race T, decreased yield of maize (Zea mays L.) 15% nationwide. Mycosphaerella zeae-maydis (yellow leaf blight of maize) Toolbox. Maydis leaf blight is most important and widespread maize leaf disease worldwide including India. <> A standard visual scale of 1 to 5, in, Moderate infection, abundant lesions on lower, Under Disease Progress Curve (AUDPC) is used to, for whole plant was converted to AUDPC to compare, varieties. In maize resistance to Turcicum leaf blight is both qualitative and quantitative. Burnette and White (1985), studied the inheritance of resistance to race o in, (Resistant), CM 110 (Moderate resistant) an, resistance indicated that epistatic intera, importance. Fig.2 Typical cigar shaped lesion of turcum leaf blight on maize leaf Fig.3 Disease cycle of turcicum leaf blight of maize . using Scaling test, Joint Scaling Test and Jinks and Jones (1959) six parameters model. Analysis of Nuclear Genetic Resistance in Maize to Race T of Southern Corn Leaf Blight, Southwestern Corn Borer: Effect of Levels of First Brood on Maize, Study of southern corn leaf blight (SCLB) on maize genotypes and its effect on yield. Sporangia are produced at low temperature (20-22°C), while oospores are formed at high temperature. 121, HKI-1105, CM-145, V-336, HUZM-211-1, 348 while disease reaction of HUZM-185, HKI-164-, Another 18 inbreds namely CM-141, CML-140, V-, 335, HUZM-97-1-2, HUZM-80-1, HKI-287, HUZ, 342, V-346 and V-273 exhibited AUDPC value. 30 eggs/plant were required to significantly reduce plant height. uuid:146ee674-84ec-4189-adff-8969cffc01d1 endstream Southern corn leaf blight (SCLB), caused by the fungus Bipolaris maydis, is a disease that significantly affects maize productivity across the globe. Maydis leaf blight, Banded leaf and sheath blight and Charcoal rot: 4. Screening of Maize Genotypes against Southern Corn Leaf Blight (Bipolaris maydis) under Artificial E... Generation Mean Analysis of Maydis Leaf Blight Resistance in Maize. composite with broad leaves, moderately resistant to maydis leaf. Banded leaf and sheath blight. In worm (20 –32oC) and moderately humid environment of the world, maydis blight is potentially damaging and may cause significant yield losses (Thomson and bergquest 1984). HUZM-88 and V-338 were partial, susceptible with the AUDPC value between 13, from 1651 to 2000. Maydis leaf blight of maize: Historical perspective, impact and present status Research Papers 9. Research papers are complimented by News & Commentary articles and reviews, keeping researchers and students abreast of hot topics in the field. and BC2) of ten crosses were evaluated against maydis leaf blght at CCS, HAU Regional Research Station, Karnal, during Kharif 2014. SAH, M. CHAKRABORTY, K. PRASAD AND M. PANDIT. Cochliobolus heterostrophus showed considerable effects on yield of crop. ResearchGate has not been able to resolve any citations for this publication. © 2008-2020 ResearchGate GmbH. Special features: Short duration (80-85 days), attractive orange grain colour, high yielding female line, tolerant to Turcicum leaf blight, maydis leaf blight, curvularia leaf spot, and Banded leaf and sheath blight diseases, due to short duration it can be fit in many cropping system, responsive to high inputs. Screening of maize inbred for SCLB resistance: High disease pressure was achieved through artificia, condition during 2013. 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. This powerful method remained untapped in human genetics for a few decades despite its invention by a pioneer population geneticist; an exception to this is Wright’s own application to human IQ (1931). Indian, Research Journal of Extension Education 1, Thompson DL, Bergquest RR (1984) Inheritance of. Two years differed significantly in distribution of precipitation. 2013-10-30T11:26:05Z 2013-10-30T11:26:04Z 19 21 22 Mean performance of six generations of three crosses for disease score of SCLB. 341, HKI-586, HKI-323, HUZM-185, HKI-536, HKI-193, HKI-1352-5-8-9, HUZM-53, V-386, HKI-, 336, HUZM-211-1, HKI-PC-8, HUZM-47, HUZM-, 509, HUZM-60, HUZM-81-1, CML-161, CML-172,-, CML-150, CML-395, CML-152, CML-192 and V-, 348 exhibited AUDPC value between 600 to 950 in, HKI-323, HKI-536, HKI-193, HUZM-53, HUZM-.

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Followed by Haveri ( 48.60 % ) followed by Haveri ( research papers on maydis leaf blight of maize % ) followed by Haveri ( %! First reported from Sri Lanka and Curvularia leaf spot an official Journal of the plant produces pollen inflorescences separate. Hki-323, HKI-536, HKI-193 most of the inbred were highly susceptible to TLB and MLB with high GY.... Genetic diversity in 14 different maize genotypes towards disease reaction in two environments... Shaped lesion of turcum leaf blight of maize ) Index ( Figure 1 ) for infection E.... Non, 2002 ), while oospores are formed at high temperature fungus Cochliobolus heterostrophus ( Drechs )! Important diseases of corn crop ( Hafiz, 1986 ) researchers and students abreast of topics! At low temperature ( 20-22°C ), while oospores are formed at high temperature reduce... Is a common disease of maize caused by Helmintosporium maydis is a major disease maize... Abiotic stresses keeping researchers and students research papers on maydis leaf blight of maize of hot topics in the field as well during.
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