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1 edition of Techniques of scoring for resistance to diseases of maize in India found in the catalog.

Techniques of scoring for resistance to diseases of maize in India

Techniques of scoring for resistance to diseases of maize in India

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Published by Indian Agricultural Research Institute, All India Co-ordinated Maize Improvement Project in New Delhi .
Written in English


Edition Notes

Statementeditor Joginder Singh.
ContributionsSingh, Joginder., Indian Agricultural Research Institute. All India Co-ordinated Maize Improvement Project.
ID Numbers
Open LibraryOL16748938M

Abstract: Identifying the resistant genotypes is one of the vital strategies to control Fusarium stalk rot disease in maize. Fifty accessions Fifty accessions of maize germplasm were evaluated for resistance to stalk rot caused by at the Maize and Millet Research Fusarium verticillioides. When susceptible products with disease ratings of 1 to 3 are planted in conditions of high disease pressure, the grower assumes a higher level of risk. If conditions are severe, even products rated as resistant can be adversely affected. Independent of yield reduction, diseases can predispose plants to secondary diseases such as stalk rots. Viral Diseases. Viruses are the smallest pathogens presented in this field guide, and only one viral disease (BYD) is discussed. The infectious viral particle is called a virion, which is a stable, non-multiplying stage by which the virus is transferred from one plant to another. Maize (/ m eɪ z / MAYZ ; Zea mays subsp. mays, from Spanish: maíz after Taino: mahiz), also known as corn (American English), is a cereal grain first domesticated by indigenous peoples in southern Mexico ab years ago. The leafy stalk of the plant produces pollen inflorescences and separate ovuliferous inflorescences called ears that yield kernels or seeds, which are fruits. Maize Family: Poaceae.


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Techniques of scoring for resistance to diseases of maize in India Download PDF EPUB FB2

Payak MM, Sharma RC () Disease rating scales in maize in India. In: Techniques of scoring for resistance to important diseases of maize. All India Coordinated Maize Improvement Project, Indian Agricultural Research Institute, New Delhi, pp 1–4. Google ScholarCited by: Thus, the identified 12 stable disease resistance sources could be used Techniques of scoring for resistance to diseases of maize in India book developing promising maize hybrids with inbuilt resistance to PFSR disease for different maize agroecologies in India.

Systemic acquired resistance and induced systemic resistance in maize. The prospects for the future, particularly for transgenically-derived disease resistance and for the elucidation of quantitative disease resistance. The suitability of Techniques of scoring for resistance to diseases of maize in India book as a system for disease resistance by: destructive disease in several maize growing regions of India.

Most of the maize hybrids and composite released in the country as well as local varieties have been found highly susceptible to this nemesis Lal and Saxena (). There are many reports of losses caused by stalk rot disease in maize. The disease was extremely destructive on Single File Size: 61KB.

Genetic resistance continues to be the most economic and effective means for the management of DM disease in maize. Breeding for DM resistance in Asian maize for lowland tropics has been achieved with good success (De Leon et al., ; George et al., ).

However, the key challenge in breeding for host-plant resistance has been the spill Cited by: 4. Screening of Indian maize inbreds for the resistance to pathogen was done using 34 Simple Sequence Repeats (SSR) markers available in the database.

Among these SSR markers, two markers viz. SSRZand SSRZ showed polymorphism for resistance to stalk rot. The combination of linkage mapping in RILs and validation in CSSLs is a powerful approach for the dissection of QTL for disease resistance in maize.

The Maize streak virus (MSV) disease has been one of the most devastating diseases of maize (Zea mays L.) in all the countries of West and Central Africa (WCA). For a long time, breeding for resistance to the disease was frustrating because of lack of facilities for uniform artifi cial inoculation.

Accomplishments 01 Screening of corn germplasm for multiple ear pest resistance. Multiple ear-colonizing pests are important impediment of corn production in the southern US states.

Twenty corn lines that had been derived from exotic maize germplasm were examined for insect and disease resistance by ARS researchers in Tifton, GA. eases in maize. Systemic acquired resistance and induced systemic resistance in maize. The prospects for the future, particularly for transgenically-derived disease resistance and for the elucidation of quantitative disease resistance.

The suitability of maize as a Techniques of scoring for resistance to diseases of maize in India book for disease resistance studies. 1 Introduction Worldwide losses in maize due to disease (not including insects or viruses) were.

Payak, M. M., Sharma, R. Disease rating scales in maize in India. In Techniques of Scoring for Resistance to Important Diseases of Maize (pp. 1–4). New Delhi: All India Coordinated Maize Improvement Project, Indian Agricultural Research by: 3.

Mass Screening Techniques for Selecting Crops Resistant to Disease Mass Screening Techniques for Selecting Crops Resistant to Disease spine: mm INTERNATIONAL ATOMIC ENERGY AGENCY VIENNA ISBN This publication presents an overview of mass screening techniques for the selection of disease resistant crops.

Various. Two inoculation techniques differing in the way of application of a macro-conidial suspension, were evaluated for their effectiveness in assessing maize resistance to ear rot.

Based on the results. Two inbred lines CM and CM have been observed to exhibit resistance to Turcicum leaf blight and Maydis leaf blight for more than 14 years at 19 locations in India representing a wide range of environmental conditions.

The resistance operating in these inbreds apparently has Author: R. Sharma, M. Payak, B. Mukherjee. Maize lethal necrosis (MLN) disease is a recent outbreak in eastern Africa and has emerged as a significant threat to maize production in the region. The Techniques of scoring for resistance to diseases of maize in India book is caused by the co-infection of Maize chlorotic mottle virus and any member of potyviridae family.

A total of 28 maize inbred lines with varying levels of tolerance to MLN were crossed in a half-diallel mating design, and the Cited by: Guidelines for Testing Maize Cultivars; Mass Screening Techniques for Resistance to Maize Diseases; Maize as Fodder; Maize Biology- An Introduction; Rabi Maize-Opportunities and Challenges; Registered Germplasm of Maize; Single Cross Hybrid Maize-Seed Production Technology (Hindi) Baby corn in India; Baby Corn (Hindi) Maize production system book.

score of showing that it was tolerant to both diseases. SC and WH03 had scores of and respectively, indicating good tolerance to both diseases. The most susceptible hybrid to both diseases was WH31 with a score of (T able 2).

Maize hybrids also showed significant differences on grain yield (p. Multiple Disease Resistance in Maize Randall Wisser 1, Rebecca Nelson 2, Judith Kolkman 2, Ellie Walsh 2, Margaret Smith 3, Junyun Yang 4 Peter Balint-Kurti1 1 USDA-ARS, Dept of Plant Pathology, North Carolina State University, Raleigh, NC2 t Pathology, Cornell University, Ithaca, NY, 3 Dept.

of Plant Breeding & Genetics, Cornell University, Ithaca, Size: KB. by maize viruses in the tropics (Africa, South America) and the lack of efficient agronomical and chemical control techniques. Higher and more regular maize yields could be obtained with such varieties.

Maize breeding studies began in the s in East and South Africa with the aim of obtaining MSV resistance. Moreover, the MSV epidemicFile Size: KB. In the susceptible category, maize Corn Disease dwarf mosaic symptoms developed on % of the line Range Average classification plants by 6 days after inoculation, and nearly all were Funk's G 52 Ab Highly resistant.

Introduction. The downy mildews are the ‘old world’ diseases causing enormous losses in various crop plants, including maize. Twenty-one species of downy mildew fungal pathogens have been reported to attack the family Poaceae, of which 10 species in 3 genera of fungi have been reported to cause different types of downy mildews (DM) in maize (De Leon,Smith and Renfro, Cited by: -Maize is thought to have originated at least years ago in the highlands of Mexico, Peru, Ecuador, and/or Bolivia because of the great density of native forms found in the region.

There have been four principal and several minor theories regarding the origin of maize: (1) the cultivated maize File Size: 5MB. No hybrid is resistant to all diseases. However, losses caused by many serious diseases are mini-mized because of different levels of resistance in hybrids currently grown.

Specifi c Resistance. Some hybrids may be specifi - cally resistant to a disease, meaning that they are highly resistant to that disease. Often, this type of resistance is.

some diseases can be visually diagnosed, many require laboratory testing that can take days and weeks to com-plete. As a result of advances in biotechnology, new products and techniques are now available that can re-place time-consuming and sometimes inaccurate labo-ratory procedures.

Above:Alejandro Ferreira inspecting maize diseases. Genetic resistance is usually the most cost-effective method of controlling crop disease. Qualitative disease resistance confers high levels of resistance, is typically race-specific and controlled by one or few genes with major effects (Bent and Mackey ).By contrast, quantitative disease resistance (QDR) causes a partial reduction in disease symptoms, is usually controlled by multiple.

To evaluate genetic resistance of parental lines actively used in maize breeding programs to major foliar diseases, maize inbred lines were tested against northern corn leaf blight (NCLB), southern corn leaf blight (SCLB), Curvularia leaf spot (CLS), gray leaf spot Cited by: 8.

Key words: Disease incidence and severity, disease score, symptoms, varieties Introduction Maize (Zea mays L.) is one of the most important staple foods in sub-Saharan Africa, providing food and. Southern corn leaf blight, caused by Drechslera maydis, is the most prevalent fungal disease in maize growing regions of India.

This is the first study that identified genotypic variability among maize genotypes, LM 13, CM and LM 15 (highly resistant, moderately resistant and highly susceptible towards infection, respectively) on the basis of metabolite profiling, using 1 H-NMR and FTIR.

Also this maize is more resistant to fungi and insect damage when is compared with the dent maize. Likewise, flint varieties mature earlier, and its seeds germinate much better in cold and wet soils. It can grow easily to higher latitudes than other forms of maize. This maize can be found in different colours, such as white yellow, red-blue, Size: 1MB.

A Summary of Maize Disease Resistance Studies Fifty publications reporting the locations of QTL for disease resistance (or dQTL) in maize were summarized (Wisser et al. Phytopath. Statistical tests indicated the presence of clusters of dQTL for multiple diseases. The era of scientific crop improvement dates back to aroundwhen the impact of Gregor Mendel’s studies on trait inheritance in peas became widely recognized.

Since then, a broad range of techniques has been developed to improve crop yields, quality, and resistance to disease, insects, and environmental stress. Assessment on major diseases of maize, sorghum, coffee haricot bean, mung bean and cow pea was undertaken at South omo zone (South Ari, and Benatsemay woreda) and Segen peoples zone (Konsso woreda).

Maize and Sorghum are the major cereal crops in South omo and Segen people’s zone. The most common diseases of field corn in New York include: Anthracnose Leaf Blight; Anthracnose Stalk Rot; Common Rust; Common Smut; Eyespot; Gray Leaf Spot; Northern Corn Leaf Blight; Northern Corn Leaf Spot; Stewart's Bacterial Leaf Blight; Recommendations for management of these diseases in New York through foliar fungicides is available.

The genetic architecture of disease resistance in maize: A synthesis of published studies. Phytopathology Fifty publications on the mapping of maize disease resistance loci were synthesized.

These papers reported the locations of quantitative trait loci (QTL) for disease (dQTL), 17 resistance genes (R-genes), and 25 R-gene analogs. genetic resistance.

Similaarly, gray leaf spot disease is emerging as problematic during rainy season in the hills. White grubs (Phyllophaga spp.

and Cyclocephala spp.), stem borers (Chilo partellus), and termites (Microtermes spp. and Macrotermes spp.) were major maize field insects in all agro-ecologies.

Maize (Zea mays L.) is a socioeconomically important crop used in human diets, animal feed and as an industrial on the starch composition of the endosperm in the seed, three maize varieties, normal corn (or non-waxy corn), waxy corn and sweet corn, have been widely cultivated in South Korea (Sa et al., ).The starch in waxy corn consists of amylopectin while normal corn Cited by: disease variable to use, depending on the objectives of the study and type of disease • When possible, measurement accuracy (bias and precision) and reliability should be considered • When possible, one should match the data-analysis with the type of variable used for disease intensity • Many more details in new book:File Size: KB.

Genetically modified organism - Genetically modified organism - GMOs in medicine and research: GMOs have emerged as one of the mainstays of biomedical research since the s. For example, GM animal models of human genetic diseases enabled researchers to test novel therapies and to explore the roles of candidate risk factors and modifiers of disease outcome.

Source of disease resistance Genotypes of maize including Corpoica H, CLA 87/CLA 91 from Colombia, and ZMZM05 SADVI, 07 SADVI, ZM and ZM from Zimbabwe were identified as resistant to GLS (Manandhar et al., ).

The. This book is the first of four volumes forming the new Handbook of encompasses 28 chapters contributed by 56 well-known authors/co-authors. As outlined in the preface, the book is a conceptual round-up of what we know now, what we will know soon, and where the maize researchers are headed for a great variety of questions concerning plant form, development, growth and responses to the Author: Ralf G.

Kynast. Grey leaf spot (GLS) is a foliar fungal disease that pdf maize, also known as is considered pdf of the most significant yield-limiting diseases of corn worldwide.

There are two fungal pathogens that cause GLS: Cercospora zeae-maydis and Cercospora zeina. Symptoms seen on corn include leaf lesions, discoloration (), and foliar blight.

Distinct symptoms of GLS are rectangular. Extensive studies on downy mildew resistance in maize were undertaken earlier through the CIMMYT co-ordinated Asian Maize Biotechnology Network (AMBIONET) in four Asian countries, namely India Cited by: 7.Corn is an important source of ebook essential nutrients and phytochemicals known to enhance health and prevent chronic diseases.

Besides carbohydrates, protein, and fat, the corn caryopsis contains significant amounts of most B-vitamins, provitamin A, tocopherols (vitamin E), and essential macro- .