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  • 1
    Keywords: Plant diseases. ; Plant genetics. ; Agriculture. ; Plant Pathology. ; Plant Genetics. ; Agriculture.
    Description / Table of Contents: Part I: Mutation Induction -- Chapter 1. Physical mutagenesis and population development in Musa spp -- Chapter 2. Gamma irradiation of embryogenic cell suspension cultures from Cavendish banana (Musa spp. AAA group) and in vitro selection for resistance to Fusarium wilt -- Part II: Fusarium TR4 Screening Technologies -- Chapter 3. Pre-screening of banana genotypes for Fusarium wilt resistance by using an in vitro bioassay -- Chapter 4. In vitro based mass-screening techniques for early selection of banana mutants resistant to Fusarium wilt -- Chapter 5. An optimised greenhouse protocol for screening banana plants for Fusarium wilt resistance -- Chapter 6. Lab-based screening using hydroponic system for the rapid detection of Fusarium wilt TR4 tolerance/resistance of banana -- Chapter 7. Field screening of gamma-irradiated Cavendish bananas -- Part III: Mutation Detection using Genomics Tools -- Chapter 8. Mutation detection using Low Coverage Copy Number Variation -- Chapter 9. A protocol for detection of large chromosome variations in banana using Next Generation Sequencing -- Part IV: Low-cost in vitro Methods for Banana Micropropagation -- Chapter 10. Low-cost in vitro methods for generation advancement in banana mutation breeding -- Chapter 11. A protocol for mass propagation of plants using a low-cost bioreactor.
    Abstract: Bananas are a staple food for over 500 million people and are also an important cash crop. Fusarium wilt, caused by the fungus Fusarium oxysporum f.sp. cubense, is one of the most destructive diseases of banana globally. Since the 1990s, an aggressive variant of this fungus, called Tropical Race 4 (TR4), severely affected banana plantations in Southeast Asia from where it spread to other continents, including Latin America, where the global banana export market is primarily centred. TR4 is a soil borne pathogen making the disease difficult to contain. The Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture implemented a Coordinated Research Project (CRP) ‘Efficient Screening Techniques to Identify Mutants with Disease Resistance for Coffee and Banana” (2015-2020). This CRP brought together experts from Asia, Europe and Africa in addition to experts of the Joint FAO/IAEA Centre to develop resistance against TR4 through mutation-assisted breeding. Induced mutagenesis is particularly attractive in case of banana since most cultivated bananas are seedless, thus hampering conventional cross breeding. This Open Access book is a compilation of the protocols developed under the CRP specifically for TR4. The first part covers methods for mutation induction, including the integrated use of innovative single-cell culture with mutagenesis techniques. The book also describes up-to-date phenotypic screening methods for TR4 resistance in banana under field-, greenhouse- and laboratory conditions. Finally, molecular and bioinformatics tools for genome-wide mutation discovery following Next Generation Sequencing are also described. Given the imminent threat of Fusarium Wilt TR4 on banana production globally, it is our hope and intention that the book will serve as a timely reference and guide for banana breeders and pathologists worldwide who are committed to the genetic improvement of banana for Fusarium wilt resistance.
    Type of Medium: Online Resource
    Pages: XVI, 187 p. 1 illus. , online resource.
    Edition: 1st ed. 2022.
    ISBN: 9783662649152
    DDC: 571.92
    Language: English
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  • 2
    Keywords: Plant diseases. ; Plant genetics. ; Agriculture. ; Botany. ; Plant Pathology. ; Plant Genetics. ; Agriculture. ; Plant Science.
    Description / Table of Contents: Introduction coffee breeding and challenges -- Choice of materials for mutation induction in arabica coffee -- Improved in-vitro establishment and germination of Coffea arabica seed -- Induced mutagenesis in coffee (Coffea arabica L.) using chemical agents -- Mutation induction using gamma irradiation and high frequency embryogenic callus from coffee (Coffea arabica) -- Chemical mutagenesis of Coffea arabica mature seed using EMS -- Physical mutagenesis of coffee seeds -- In-vitro regeneration of Coffea arabica var. Venecia through somatic embryogenesis -- Protocol on mutation induction in Coffea arabica using in vivo grafting and cuttings -- Protocol on mutation induction in coffee using in vitro tissue cultures -- Screening for resistance to coffee leaf rust -- Protocol to send samples of coffee leaf rust to CIFC -- Coffee leaf rust (Hemileia vastatrix) inoculation and evaluation under laboratory conditions -- Development of a PCR-Based Molecular Detection -- Technique for the Early Diagnosis of Coffee Leaf -- Rust Caused by Hemileia vastatrix -- Protocols for chromosome preparations: molecular cytogenetics and studying genome organization in coffee. .
    Abstract: This open-access book presents essential concepts and new, illustrated methods for mutation-assisted breeding of Coffea arabica L. (Arabica), one of the world's most important cash crops and beverages. Arabica coffee accounts for about 60% of the world's coffee production. Coffee leaf rust (CLR), caused by the fungus Hemileia vastatrix is the major disease affecting Arabica coffee resulting in losses of over $1 billion annually. The geographical distribution of CLR is expanding due to climate change. Moreover, the genetic improvement of Arabica coffee is constrained due to its very narrow genetic base. This protocol book covers practical methods to enhance genetic diversity in Arabica coffee through induced mutagenesis and for screening for resistance to CLR. Current breeding approaches, challenges, and opportunities for Arabica coffee improvement are briefly reviewed and a survey of common coffee diseases with emphasis on CLR is presented. Based on latest advances in science and technology, this book includes novel methods for single-cell mutagenesis using in vitro cell and tissue culture techniques and for genome-wide screening of induced mutations using genomics tools. Each protocol chapter provides step-by-step illustrated methods supported by example results. Given the impact of recent CLR epidemics on Arabica coffee production in Latin America, the book is intended to serve as a timely reference and guide for students and researchers in the agricultural sciences, plant pathologists and breeders, as well as growers and end-users interested in producing novel coffee genotypes for genetic studies, breeding, and commercial applications. .
    Type of Medium: Online Resource
    Pages: XX, 314 p. 99 illus., 92 illus. in color. , online resource.
    Edition: 1st ed. 2023.
    ISBN: 9783662672730
    DDC: 571.92
    Language: English
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  • 3
    Keywords: Life sciences ; Agriculture ; Plant breeding ; Life Sciences ; Plant Breeding/Biotechnology ; Agriculture
    Description / Table of Contents: General Introduction --- Screening Protocols for Heat Tolerance in Rice at the Seedling and Reproductive Stages --- Validation of Screening Protocols for Heat Tolerance in Rice --- Conclusion --- References
    Pages: Online-Ressource (XII, 39 pages) , 16 illustrations, 10 illustrations in color
    ISBN: 9783319773384
    Language: English
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  • 4
    Publication Date: 2017-10-18
    Electronic ISSN: 1664-462X
    Topics: Biology
    Published by Frontiers Media
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  • 5
    Publication Date: 2009-09-11
    Description: Background Cassava (Manihot esculenta Crantz), a starchy root crop grown in tropical and subtropical climates, is the sixth most important crop in the world after wheat, rice, maize, potato and barley. The repertoire of simple sequence repeat (SSR) markers for cassava is limited and warrants a need for a larger number of polymorphic SSRs for germplasm characterization and breeding applications. Results A total of 846 putative microsatellites were identified in silico from an 8,577 cassava unigene set with an average density of one SSR every 7 kb. One hundred and ninety-two candidate SSRs were screened for polymorphism among a panel of cassava cultivars from Africa, Latin America and Asia, four wild Manihot species as well as two other important taxa in the Euphorbiaceae, leafy spurge (Euphorbia esula) and castor bean (Ricinus communis). Of 168 markers with clean amplification products, 124 (73.8%) displayed polymorphism based on high resolution agarose gels. Of 85 EST-SSR markers screened, 80 (94.1%) amplified alleles from one or more wild species (M epruinosa, M glaziovii, M brachyandra, M tripartita) whereas 13 (15.3%) amplified alleles from castor bean and 9 (10.6%) amplified alleles from leafy spurge; hence nearly all markers were transferable to wild relatives of M esculenta while only a fraction was transferable to the more distantly related taxa. In a subset of 20 EST-SSRs assessed by fluorescence-based genotyping the number of alleles per locus ranged from 2 to 10 with an average of 4.55 per locus. These markers had a polymorphism information content (PIC) from 0.19 to 0.75 with an average value of 0.55 and showed genetic relationships consistent with existing information on these genotypes. Conclusion A set of 124 new, unique polymorphic EST-SSRs was developed and characterized which extends the repertoire of SSR markers for cultivated cassava and its wild relatives. The markers show high PIC values and therefore will be useful for cultivar identification, taxonomic studies, and genetic mapping. The study further shows that mining ESTs is a highly efficient strategy for polymorphism detection within the cultivated cassava gene pool.
    Electronic ISSN: 1471-2229
    Topics: Biology
    Published by BioMed Central
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  • 6
    Publication Date: 2024-04-07
    Description: This open access book presents simple, robust pre-field screening protocols that allow plant breeders to screen for enhanced tolerance to heat stress in rice. Two critical heat-sensitive stages in the lifecycle of the rice crop are targeted – the seedling and flowering stages – with screening based on simple phenotypic responses. The protocols are based on the use of a hydroponics system and/or pot experiments in a glasshouse in combination with a controlled growth chamber where the heat stress treatment is applied. The protocols are designed to be effective, simple, reproducible and user-friendly. The protocols will enable plant breeders to effectively reduce the number of plants from a few thousands to less than 100 candidate individual mutants or lines in a greenhouse/growth chamber, which can then be used for further testing and validation in the field conditions. The methods can also be used to classify rice genotypes according to their heat tolerance characteristics. Thus, different types of heat stress tolerance mechanisms can be identified, presenting opportunities for pyramiding different (mutant) sources of heat stress tolerance.
    Keywords: Life sciences ; Plant breeding ; Agriculture ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PST Botany and plant sciences ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TV Agriculture and farming::TVB Agricultural science
    Language: English
    Format: image/jpeg
    Format: image/jpeg
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