Download or read book Chickpea Improvement Through Genetic Analysis and Quantitative Trait Locus QTL Mapping of Ascochyta Blight Resistence Using Wild Cicer Species written by Nader Aryamanesh and published by . This book was released on 2007 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: [Truncated abstract] The genetics of ascochyta blight resistance was studied in five 5 x 5 half-diallel cross sets involving seven genotypes of chickpea (ICC 3996, Almaz, Lasseter, Kaniva, 24B-Isoline, IG 9337 and Kimberley Large), three accessions of Cicer reticulatum (ILWC 118, ILWC 139 and ILWC 184) and one accession of C. echinospermum (ILWC 181) under field conditions. Both F1 and F2 generations were used in the diallel analysis. Almaz, ICC 3996 and ILWC 118 were the most resistant genotypes. Estimates of genetic parameters, following Hayman's method, showed significant additive and dominant gene actions. The analysis also revealed the involvement of both major and minor genes. Susceptibility was dominant over resistance to ascochyta blight. The recessive alleles were concentrated in the two resistant chickpea parents ICC 3996 and Almaz, and one C. reticulatum genotype ILWC 118. High narrow-sense heritability (ranging from 82 to 86% for F1 generations, and 43 to 63% for F2 generations) indicates that additive gene effects were more important than non-additive gene effects in the inheritance of the trait and greater genetic gain by breeding resistant chickpea cultivars using carefully selected parental genotypes. Current simple leaf varieties are often susceptible to ascochyta blight disease whereas varieties of other leaf types range from resistant to susceptible. The inheritance of ascochyta blight resistance and different leaf types and their correlation were investigated in intraspecific progeny derived from crosses among two resistant genotypes with normal leaf type (ICC 3996 and Almaz), one susceptible simple leaf type (Kimberley Large) and one susceptible multipinnate leaf type (24 B-Isoline). ... An interspecific F2 mapping population derived from a cross between chickpea accession ICC 3996 (resistant to ascochyta blight, early flowering, and semi-erect plant growth habit) and C. reticulatum accession ILWC 184 (susceptible to ascochyta blight, ii late flowering, and prostrate plant growth habit) was used for constructing a genetic linkage map. F2 plants were cloned through stem cuttings taken at pre-flowering stage, treated with plant growth regulator powder (0.5 mg/g indole butyric acid (IBA) and 0.5 mg/g naphthalene acetic acid (NAA)) and grown in a sand + potting mix substrate. Clones were screened for ascochyta blight resistance in controlled environment conditions using a 19 scale. Three quantitative trait loci (QTLs) were found for ascochyta blight resistance in this population. Two linked QTLs, located on linkage group (LG) 4, explained 21.1% and 4.9% of the phenotypic variation. The other QTL, located on LG3, explained 22.7% of the phenotypic variation for ascochyta blight resistance. These QTLs explained almost 49% of the variation for ascochyta blight resistance. LG3 had two major QTLs for days to flowering (explaining 90.2% of phenotypic variation) and a major single QTL for plant growth habit (explaining 95.2% of phenotypic variation). There was a negative correlation between ascochyta blight resistance and days to flowering, and a positive correlation between days to flowering and plant growth habit. The flanking markers for ascochyta blight resistance or other morphological characters can be used in marker-assisted selections to facilitate breeding programs.
Download or read book Ascochyta blights of grain legumes written by Bernard Tivoli and published by Springer Science & Business Media. This book was released on 2007-09-04 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ascochyta blights consistently affect large areas of grain legume production (pea, lentil, chickpea and faba bean) in all countries where they are cultivated. These diseases are capable of causing large yield losses. This book considers the state-of-the-art by taking a comparative approach of Ascochyta blight diseases of cool season food and feed legumes. Topics considered are pathogen diversity, legume genetics and breeding, and integrated disease management.
Download or read book Chickpea Crop Wild Relatives for Enhancing Genetic Gains written by Mohar Singh and published by Academic Press. This book was released on 2020-02-29 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chickpea: Crop Wild Relatives for Enhancing Genetic Gains explores aspects related to critical analysis on factors responsible for narrow genetic base of chickpea productions including domestication bottleneck, the level of diversity present in different cultivated and wild species, the uniqueness and usefulness of potential gene sources available and maintained in production systems across the globe, the level of genetic erosion both at landrace and species level over time and space etc. Despite considerable international investment in conventional breeding, production of chickpea has not yet been significantly improved beyond that achieved through its normal single domestication event and high self-pollination rate. Total annual pulse production of ~12 million tons (FAO 2016) is far below actual potential. Susceptibility to both biotic and abiotic stresses have created a production level bottleneck whose solution possibly lies in the use of crop wild relatives and other genetic traits cultivated by tailoring novel germplasm. Presenting options for widening the genetic base of chickpea cultivars by introgression of diverse genes available in distantly related wild Cicer taxa, thus expanding the genetic base and maximize genetic gains from the selection, it is necessary to accumulate other complimentary alleles from CWRs. This review will focus on present status of gene pool and species distribution, germplasm conservation, characterization and evaluation, problems associated with crop production, sources of target traits available in wild species, status of trait introgression in synthesizing new gene pool of chickpea along with progress made in chickpea genomics. An edited book with contributions from leading scientists, this information will guide and inform chickpea breeders, PGR researchers and crop biologists across the world. Presents both conventional and emerging techniques Provides insights into gene pyramiding as cytogenic manipulations Includes case studies highlighting the impact of improving chickpea production
Download or read book The Chickpea Genome written by Rajeev K. Varshney and published by Springer. This book was released on 2018-01-02 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book sheds new light on the chickpea genome sequencing and resequencing of chickpea germplasm lines and provides insights into classical genetics, cytogenetics, and trait mapping. It also offers an overview of the latest advances in genome sequencing and analysis. The growing human population, rapid climate changes and limited amounts of arable land are creating substantial challenges in connection with the availability and affordability of nutritious food for smallholder farmers in developing countries. In this context, climate smart crops are essential to alleviating the hunger of the millions of poor and undernourished people living in developing countries. In addition to cereals, grain legumes are an integral part of the human diet and provide sustainable income for smallholder farmers in the arid and semi-arid regions of the world. Among grain legumes, the chickpea (Cicer arietinum) is the second most important in terms of production and productivity. Besides being a rich source of proteins, it can fix atmospheric nitrogen through symbiosis with rhizobia and increase the input of combined nitrogen. Several abiotic stresses like drought, heat, salinity, together with biotic stresses like Fusarium wilt, Ascochyta blight, and Botrytis grey mould have led to production losses, as the chickpeas is typically grown in the harsh climates of our planet’s semi-arid regions.
Download or read book Translational Genomics for Crop Breeding Volume 1 written by Rajeev Varshney and published by John Wiley & Sons. This book was released on 2013-09-13 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genomic Applications for Crop Breeding: Biotic Stress is the first of two volumes looking at the latest advances in genomic applications to crop breeding. This volume focuses on genomic-assisted advances for improving economically important crops against biotic stressors, such as viruses, fungi, nematodes, and bacteria. Looking at key advances in crops such as rice, barley, wheat, and potato amongst others, Genomic Applications for Crop Breeding: Biotic Stress will be an essential reference for crop scientists, geneticists, breeders, industry personnel and advanced students in the field.
Download or read book Linkage Mapping and QTL Analysis of Ascochyta Blight Resistance in Chickpea Cicer Arietinum written by Hayde Flandez Galvez and published by . This book was released on 2003 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic and Genomic Resources of Grain Legume Improvement written by Shivali Sharma and published by Elsevier Inc. Chapters. This book was released on 2013-07-18 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chickpea is an important protein-rich crop with considerable diversity present among 44 annual Cicer species. A large collection of chickpea germplasm including wild Cicer species has been conserved in different gene banks globally. However, the effective and efficient utilization of these resources is required to develop new cultivars with a broad genetic base. Using core and mini-core collections, chickpea researchers have identified diverse germplasm possessing various beneficial traits that are now being used in chickpea breeding. Further, for chickpea improvement, the genus Cicer harbours alleles/genes for tolerance/resistance to various abiotic and biotic stresses as well as for agronomic and nutrition-related traits. Recent advances in plant biotechnology have resulted in developing large number of markers specific to chickpea in addition to technological breakthrough in developing high-throughput genotyping platforms for unlocking the genetic potential available in germplasm collections.
Download or read book Advances in Ascochyta Research written by Diego Rubiales and published by Frontiers Media SA. This book was released on 2018-12-21 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Legume crops provide an excellent source of high quality plant protein and have a key role in arable crop rotations reducing the need for fertilizer application and acting as break-crops. However, these crops are affected by a number of foliar and root diseases, being ascochyta blights the most important group of diseases worldwide. Ascochyta blights are incited by different pathogens in the various legumes. A number of control strategies have been developed including resistance breeding, cultural practices and chemical control. However, only marginal successes have been achieved in most instances, most control methods being uneconomical, hard to achieve or resulting in incomplete protection. This eBook covers recent advances in co-operative research on these diseases, from agronomy to breeding, covering traditional and modern genomic methodologies.
Download or read book Multispectral Imaging and Genetic Analysis of Cultivated Chickpea Seed Traits written by Zhaslan Akhmetov and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cultivated chickpea (Cicer arietinum) is one of the world's most widely grown crops (FAO STAT 2014), with India, Australia, and Pakistan being the major producers of chickpea seeds. Genetic improvement of chickpea is constrained by low genetic diversity, resulting from a domestication and breeding bottleneck that removed >95% of genetic variation. Recently, wide-cross populations involving the domesticated species and its wild relatives, C. reticulatum and C. echinospermum, have been constructed as a pre-breeding resource (von Wettberg et al., 2018). Chickpea seed traits influence marketablitity and price. This project examined phenotypic variation and genetic control of seed coat traits (e.g., coat color and pattern) in wide cross F2 populations. Available evidence suggests that both color and pattern are the product of plant secondary metabolites, specifically flavonoid anthocyanins, produced in the maternal seed coat tissue. As seed coat color is a complex trait, seed coat reflectance was quantified using a multispectral imaging device to record nineteen wavelengths and the international standards for visual color CIE L*, a*, b*. Correlation analyses reduced this to a set of five minimally correlated wavelengths. Quantitative trait locus (QTL) mapping revealed a single major locus controlling seed patterning (spots) in both C. reticulatum and C. echinospermum, with the effect of additional epistatic loci observed but not genetically resolved. Seed coat reflectance is controlled by multiple loci. Two reflectance loci are operative across all analyzed populations, controlling near-infrared (780nm) and visual wavelengths, respectively, while several other loci were observed with population-specific effects. Analysis of genetic interactions suggests two networks of interacting genes operating to control seed coat reflectance.
Download or read book Wild Crop Relatives Genomic and Breeding Resources written by Chittaranjan Kole and published by Springer Science & Business Media. This book was released on 2011-02-24 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Handbook of New Technologies for Genetic Improvement of Legumes written by P. B. Kirti and published by CRC Press. This book was released on 2008-05-13 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive and groundbreaking collection of ideas for plant improvement Most of the world's supply of legumes is cultivated under adverse conditions that make this commercially important crop susceptible to the vagaries of nature and damaging stresses. Genetic manipulation has become a proven way for cultivators to battle these pro
Download or read book The Beans and the Peas written by Aditya Pratap and published by Woodhead Publishing. This book was released on 2020-11-22 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Beans and the Peas: From Orphan to Mainstream Crops presents a comprehensive literature resource on the most important food legume crops previously known as "orphans," but which are increasingly becoming mainstream as their production opportunities have been improved through genetic improvement and biotechnology, and their role as an important nutrient source gains urgency. This book focuses on 12 important food legumes and discusses all relevant aspects on their economic importance, crop statistics, botany, and their general description. It also provides exhaustive information on plant genetic resources and their use, genetic improvement, resistance to biotic and abiotic stresses, improved varieties, agronomy, seed system, and use of information and communication tools in each individual food legume.Development of innovative biotechnological tools, genetic transformation, and the genome sequencing information has also been covered in each chapter providing the readers with state-of-the-art information on pulses. All chapters have been supported by relevant figures, illustrations, and tables, which make the contents accessible and easy to understand.Each of the chapters has been authored by globally known scientists/researchers presenting up-to-date information on various aspects of food legumes. This book provides a current and comprehensive treatise to the readers and will be tremendously helpful in furthering their academic and research pursuits. Provides a single-volume resource on the most important food legumes having a prominent role in food and nutritional security Written by experts with a focus on providing foundational information for further research and development Presents both theoretical aspects and application-based case studies Supported by relevant figures, illustrations, and tables
Download or read book Polyploidy and Hybridization for Crop Improvement written by Annaliese S. Mason and published by CRC Press. This book was released on 2017-11-22 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many of our current agricultural crops are natural or agricultural hybrids (between two or more species), or polyploids (containing more than one genome or set of chromosomes). These include potato, oats, cotton, oilseed rape, wheat, strawberries, kiwifruit, banana, seedless watermelon, triticale and many others. Polyploidy and hybridization can also be used for crop improvement: for example, to introgress disease resistance from wild species into crops, to produce seedless fruits for human consumption, or even to create entirely new crop types. Some crop genera have hundreds of years of interspecific hybridization and ploidy manipulation behind them, while in other genera use of these evolutionary processes for crop improvement is still at the theoretical stage. This book brings together stories and examples by expert researchers and breeders working in diverse crop genera, and details how polyploidy and hybridization processes have shaped our current crops, how these processes have been utilized for crop improvement in the past, and how polyploidy and interspecific hybridization can be used for crop improvement in the future.
Download or read book Technologies in Plant Biotechnology and Breeding of Field Crops written by Kamaluddin and published by Springer Nature. This book was released on 2022-10-05 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited book is a comprehensive compilation of principles, conventional and molecular approaches used to develop improved varieties and hybrids of major crops in light of their origin, evolution, taxonomy, production and productivity and need by human civilization. The book covers breeding prospects of all important food and commercial crops. It highlights the importance of breeding tools and techniques in ensuring food security. This book is of interest to teachers, researchers, agriculture scientists, capacity builders, and policymakers. Also, the book serves as additional reading material for undergraduate and graduate students of agriculture, soil science, and environmental sciences. National and international agricultural scientists and policymakers will find this book useful.
Download or read book Broadening the Genetic Base of Grain Legumes written by Mohar Singh and published by Springer. This book was released on 2014-10-28 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grain legumes play significant and diverse role in the farming systems and provide nutrition security to the largely vegetarian and relatively poorer people around the world. These are ideal crops for achieving three simultaneous developmental goals viz. reducing poverty, improving human health and nutrition and enhancing ecosystem resilience. Globally, grain legumes are the second most important crop group next only to cereals but a large proportion of area of it is under rainfed-low input systems as compared to cereals contributing to lower yields. The other important factor responsible for reduced yield in grain legumes is the narrow genetic base of the present day pulse varieties. In order to break the yield barriers of these cultivars, new sources of genes/ alleles need to be identified and suitably incorporated into the adapted background. The information on various aspects of grain legume improvement although has been considerable in the recent past, these information are highly scattered and not available at one place. The present book consists of comprehensive and latest crop-wise information on important grain legumes of the world including their distribution, gene pool, systematics, status of genetic and genomic resources, production constraints, traits of importance, crop improvement methodologies - both conventional as well as contemporary and future strategies to be adopted for comprehensive grain legume improvement in various agro-ecological target areas of the globe. The chapters have been contributed by eminent crop experts from across the world engaged in research in their respective crops for the past several years thus providing a rare insight into the crop specific constraints and prospects drawing from their rich overall experience. The book therefore will be a useful source of information to the grain legume researchers, students, policy planners and developmental experts alike.
Download or read book Allele Mining for Genomic Designing of Grain Legume Crops written by Chittaranjan Kole and published by CRC Press. This book was released on 2024-09-30 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deliberates on the concept, strategies, tools, and techniques of allele mining in grain legume crops and its application potential in genome elucidation and improvement, including studying allele evolution, discovery of superior alleles, discerning new haplotypes, assessment of intra- and interspecific similarity, and also studies of gene expression and gene prediction. Available gene pools in global germplasm collections specifically consisting of wild allied species and local landraces for almost all major crops have facilitated allele mining. Development of advanced genomic techniques, including PCR-based allele priming and EcoTILLING-based allele mining, is being widely used now for mining superior alleles. Allele's discovery has become more relevant now for employing molecular breeding to develop designed crop varieties matching consumer needs, and also with genome plasticity to adapt to climate change scenarios. All these concepts and strategies, along with precise success stories, are presented in the chapters dedicated to the major grain legume crops. 1. The first book on the novel strategy of allele mining in grain legume crops for precise breeding. 2. Presents genomic strategies for mining superior alleles underlying agronomic traits from genomic resources. 3. Depicts case studies of PCR-based allele priming and EcoTILLING-based allele mining. 4. Elaborates on gene discovery and gene prediction in major grain legume crops. This book will be useful to students and faculties in various plant science disciplines, including genetics, genomics, molecular breeding, agronomy, and bioinformatics; to scientists in seed industries; and also to policymakers and funding agencies interested in crop improvement.
Download or read book Legume Breeding in Transition Innovation and Outlook written by Rafiul Amin Laskar and published by Frontiers Media SA. This book was released on 2023-09-06 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: Legumes (family Fabaceae) comprise a diverse range of crops grown worldwide, which are important constituents of sustainable agriculture and harbour a role in improving human and livestock health. Legumes serve as a rich source of plant-based proteins, rank second in nutrition value after cereals, and are ideal to supplement a protein-deficient cereal-based human diet. Legumes also provide other essential services to agriculture through their ability to fix atmospheric nitrogen, recycle nutrients, enhance soil carbon content, and diversify cropping systems. Legume production and seed quality are affected by a range of biotic (pests, insect diseases, and weeds) and abiotic stresses (drought, heat, frost, and salinity). In addition to this, rapidly changing climate, shrinking arable land, erratic rainfalls, and depleting water and other natural resources impact legume production and threaten food and nutrition security worldwide. Persistent demand for legume crops is existing to fulfil the food requirements of an ever-growing human population. Therefore, legume breeders and geneticists have employed different conventional and modern breeding strategies to improve yield, resistance to biotic and abiotic stresses, grain quality, and nutritional and nutraceutical properties. Conventional breeding strategies are laborious, time consuming, expensive, and inefficient to achieve the desired goals. However, advanced breeding techniques such as alien gene introgression, genomics-assisted breeding, transgenic technology, speed breeding, association and mapping studies, genome editing, and omics will contribute to sustainable agriculture and food security.
