Characterization of the Meloidogyne Javanica Resistance Locus Employing Molecular Markers and Isolation of Candidate Disease Resistance Loci in the Carrot (Daucus Carota L.) Genome PDF Download
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Author: Leonardo Silva Boiteux
Publisher:
ISBN:
Category :
Languages : en
Pages : 476
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Author: Leonardo Silva Boiteux
Publisher:
ISBN:
Category :
Languages : en
Pages : 476
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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 810
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Author: Carlos Antonio Fernandes Santos
Publisher:
ISBN:
Category :
Languages : en
Pages : 304
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Orange carrots are a top ranked vegetable in terms ofpro-vitamin A content. Carotenoid pathway products were investigated in F2 populations from two different carrot crosses: orange Brasilia x dark orange HCM and orange B493 x white wild QAL. Broad sense heritabilities va1ues for a1l carotenoids were greater than 90% in the B493 x QAL cross and from 35% to 70% among different carotenoid,s in the Brasilia x HCM cross. The estimated number of factors was 4 for a-carotene, 3 for ~-carotene and total carotenes and one for ?- carotene, lycopene and phytoene in the orange x dark orange cross, and 4 for a-carotene, 1-2 for lycopene and tota1 carotenes and 1 for the other carotenes in the orange x white cross. In comparison to the known biochemical pathways the correct order of substrates and products, phytoene-+? -carotene-+ lycopene, was identified in the path analysis of f3-carotene in the cross Brasilia x HCM but not in the correlation analysis. Linkage grouping ana1ysis assigned 287 and 250 scored molecular markers to the nine chromosomes of carrots, at LOD scores ranging from 3.0 to 7.0 and the average marker spacing was 4.78,4.80,5.54 and 5.13 cM in 11 the Brasilia-, HCM-, B493 and QAL-coupling phase maps, respectively. Interval mapping performed with the orange x dark orange cross detected four, eight, three, one, five and three putative QTL associated with accumulation of ?-carotene, a-carotene, 13-carotene, lycopene, phytoene and total carotenoids, respectively, with major QTL explaining from 10.2 to 13.0% of total phenotypic variation. In the B493 x QAL population single marker analysis identified loci explaining 13.8%,6.8%, 19.3%,5.7%, 17.5% and 20.2% of total phenotypic variation for ?-carotene, a-carotene, 13-carotene, lycopene, phytoene and tota1 carotenoids content, respectively. Overall analysis showed clustered loci affecting the phenotypic variation of carotenoidpathway suggesting clusters of related-pathway loci as an evolutionary mechanism and supporting an adaptive evolutionary model suggested by H. A. Orr. Path analysis and QTL studies suggested that phytoene biosynthesis, perhaps associated with a root specific signal, are the two key factors limiting the carotenoid pathway in roots of white carrots.
Author:
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Category : Dissertation abstracts
Languages : en
Pages : 816
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Author: Philipp Simon
Publisher: Springer
ISBN: 9783030033880
Category : Science
Languages : en
Pages : 372
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Book Description
This book provides an up-to-date review and analysis of the carrot’s nuclear and organellar genome structure and evolution. In addition, it highlights applications of carrot genomic information to elucidate the carrot’s natural and agricultural history, reproductive biology, and the genetic basis of traits important in agriculture and human health. The carrot genome was sequenced in 2016, and its relatively small diploid genome, combined with the fact that it is the most complete root crop genome released to date and the first-ever Euasterid II genome to be sequenced, mean the carrot has an important role in the study of plant development and evolution. In addition, the carrot is among the top ten vegetables grown worldwide, and the abundant orange provitamin A carotenoids that account for its familiar orange color make it the richest crop source of vitamin A in the US diet, and in much of the world. This book includes the latest genetic maps, genetic tools and resources, and covers advances in genetic engineering that are relevant for plant breeders and biologists alike.
Author: Chittaranjan Kole
Publisher: Springer Science & Business Media
ISBN: 3642143873
Category : Science
Languages : en
Pages : 341
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Book Description
Wild crop relatives are now playing a significant part in the elucidation and improvement of the genomes of their cultivated counterparts. This work includes comprehensive examinations of the status, origin, distribution, morphology, cytology, genetic diversity and available genetic and genomic resources of numerous wild crop relatives, as well as of their evolution and phylogenetic relationship. Further topics include their role as model plants, genetic erosion and conservation efforts, and their domestication for the purposes of bioenergy, phytomedicines, nutraceuticals and phytoremediation. Wild Crop Relatives: Genomic and Breeding Resources comprises 10 volumes on Cereals, Millets and Grasses, Oilseeds, Legume Crops and Forages, Vegetables, Temperate Fruits, Tropical and Subtropical Fruits, Industrial Crops, Plantation and Ornamental Crops, and Forest Trees. It contains 125 chapters written by nearly 400 well-known authors from about 40 countries.
Author: Roberto Fritsche-Neto
Publisher: Springer Science & Business Media
ISBN: 3642330878
Category : Science
Languages : en
Pages : 166
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Book Description
Experience shows that biotic stresses occur with different levels of intensity in nearly all agricultural areas around the world. The occurrence of insects, weeds and diseases caused by fungi, bacteria or viruses may not be relevant in a specific year but they usually harm yield in most years. Global warming has shifted the paradigm of biotic stresses in most growing areas, especially in the tropical countries, sparking intense discussions in scientific forums. This book was written with the idea of collecting in a single publication the most recent advances and discoveries concerning breeding for biotic stresses, covering all major classes of biotic challenges to agriculture and food production. Accordingly, it presents the state-of-the-art in plant stresses caused by all microorganisms, weeds and insects and how to breed for them. Complementing Plant Breeding for Abiotic Stress Tolerance, this book was written for scientists and students interested in learning how to breed for biotic stress scenarios, allowing them to develop a greater understanding of the basic mechanisms of resistance to biotic stresses and develop resistant cultivars.
Author: Pradeep Kumar
Publisher: Springer
ISBN: 3319273124
Category : Science
Languages : en
Pages : 469
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Book Description
Plant diseases play an important role on our daily lives. Most of plant diseases are visible and are caused by biotic and/or abiotic factors. Symptoms are usually the results of a morphological change, alteration or damage to plant tissue and/or cells due to an interference of the plant’s metabolism. All basic structures of vascular plants are subject to attack by pathogens. The failure in accurate disease diagnosis and management may lead to huge losses in plant production and related commodities, which causes nutritional food scarcity. Typically, the appearance of a biotic symptom will indicate the relatively late stage of an infection and/or colonization of a pathogen. Expert detection, accurate diagnosis, and timely management play a significant role in keeping plants free from pathogens. In this book expert scholars share their research knowledge and key literature which are vital toward the diagnosis of plant diseases across the globe, addressing traditional plant pathology techniques, as well as advanced molecular diagnostic approach.
Author: Jameel M. Al-Khayri
Publisher: Springer Nature
ISBN: 3030669653
Category : Technology & Engineering
Languages : en
Pages : 559
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Book Description
This book examines the development of innovative modern methodologies towards augmenting conventional plant breeding, in individual crops, for the production of new crop varieties under the increasingly limiting environmental and cultivation factors to achieve sustainable agricultural production, enhanced food security, in addition to providing raw materials for innovative industrial products and pharmaceuticals. This Volume 8, subtitled Vegetable Crops: Bulbs, Roots and Tubers, consists of 12 chapters focusing on advances in breeding strategies using both traditional and modern approaches for the improvement of individual vegetable crops. Chapters are arranged in 3 parts according to the edible vegetable parts. Part I: Bulbs - Garlic (Allium sativum L.), Leek (Allium ampeloprasum L.) and Shallot (Allium cepa L. Aggregatum group); Part II: Roots - Beetroot (Beta vulgaris ssp. vulgaris var. conditiva Alefeld), Carrot (Daucus carota L.), Parsnip (Pastinaca sativa L.), Radish (Raphanus sativus L.), Sugar beet (Beta vulgaris ssp. vulgaris L.) and Turnip (Brassica rapa var. rapa L.), Part III: Tubers - Potato (Solanum tuberosum L.) and Sweet potato (Ipomea batatas L.). The chapters were contributed by 38 internationally reputable scientists from 13 countries. Each chapter comprehensively reviews the modern literature on the subject and reflects the authors own experience.
Author: Anne E. Osbourn
Publisher: Springer Science & Business Media
ISBN: 0387854983
Category : Science
Languages : en
Pages : 588
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Book Description
Plants produce a huge array of natural products (secondary metabolites). These compounds have important ecological functions, providing protection against attack by herbivores and microbes and serving as attractants for pollinators and seed-dispersing agents. They may also contribute to competition and invasiveness by suppressing the growth of neighboring plant species (a phenomenon known as allelopathy). Humans exploit natural products as sources of drugs, flavoring agents, fragrances and for a wide range of other applications. Rapid progress has been made in recent years in understanding natural product synthesis, regulation and function and the evolution of metabolic diversity. It is timely to bring this information together with contemporary advances in chemistry, plant biology, ecology, agronomy and human health to provide a comprehensive guide to plant-derived natural products. Plant-derived natural products: synthesis, function and application provides an informative and accessible overview of the different facets of the field, ranging from an introduction to the different classes of natural products through developments in natural product chemistry and biology to ecological interactions and the significance of plant-derived natural products for humans. In the final section of the book a series of chapters on new trends covers metabolic engineering, genome-wide approaches, the metabolic consequences of genetic modification, developments in traditional medicines and nutraceuticals, natural products as leads for drug discovery and novel non-food crops.
