Genomics Of Drought Tolerance In Flax Linum Usitatissimum L

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Genomics of Drought Tolerance in Flax (Linum Usitatissimum L.).

Author : Demissew Sertse Desta
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (129 download)

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Book Synopsis Genomics of Drought Tolerance in Flax (Linum Usitatissimum L.). by : Demissew Sertse Desta

Download or read book Genomics of Drought Tolerance in Flax (Linum Usitatissimum L.). written by Demissew Sertse Desta and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Flax (Linum usitatissimum L.), one of the eight founder crops of agriculture, is a versatile plant that has been a source of fiber and oil for millennia. Flax production, however, is constrained by various factors, including moisture stress. Yet, variations in the level of tolerance to different moisture regimes exists among flax germlines, thereby providing opportunities for breeders. To understand the global scale eco-geographic adaptation and to further gain insight into the genetic architecture of drought-related traits leading towards marker-assisted breeding and/or genomic selection in flax, a genome-wide investigation using high density single nucleotide polymorphism (SNP) data was performed in two sets of flax genotypes: a core (n=407) and a mini-core (n=115) collection, both representing the major world flax growing regions. The core collection was used to demonstrate haplotype distribution and possible driving forces that have shaped the population structure of the crop. The mini-core was used to perform genotype-phenotype association for drought-related traits through genome-wide association studies (GWAS) based on phenotypic values generated in two experiments. In the first experiment, 16 early root and shoot traits were evaluated using a semi-hydroponic pouch system in a controlled environment, while in the second experiment 11 drought-related traits were evaluated under irrigated and non-irrigated conditions. For the latter, GWAS was performed using the adjusted values of six of the measured traits that significantly responded to the watering regime, as well as six calculated stress indices for each trait. The genetic structure analysis clustered the core collection into four major groups: Temperate, South Asian, Mediterranean and Abyssinian. The Temperate group comprised the majority of the core collection and was dominated by accessions from Eurasia, the Americas and Oceania. Despite their limited representation, the other three groups harbored a high concentration of endemic haplotypes that can be attributed to the long history of flax cultivation in these regions hypothesized to be the centers of diversification the crop. More in-depth samplings from these regions is thus expected to broaden the genetic diversity of the flax core collection substantially. Genetic variation within morphotypes is more pronounced than between the fiber and oil types, reflecting selection of genotypes for dually elite traits i.e. both for seed and fiber. The overall result suggests the contribution of use-directed human selection and eco-geographic variations along the latitudinal gradient as major forces in shaping the genetic structure of the crop. The two GWAS experiments, i.e., early root-shoot growth and field-drought-tolerance-related traits, yielded 228 and 144 quantitative trait nucleotides (QTNs), respectively, that were associated with at least one trait. Most loci, 100 kb up- and downstream of the associated QTN, harbored genes predicted to play roles in modulating the associated trait or traits. In the root-shoot GWAS, genes predicted to encode GRAS transcription factors, mitogen-activated protein kinases (MAPKs), and auxin related lateral organ boundary proteins were present at root trait QTN loci, while QTN loci associated with shoot traits mainly harbored genes involved in photo-morphogenesis and plant immunity. QTN loci of drought tolerant traits consistently harbored genes known to mediate responses to abiotic stress, including drought, heat and salt, suggesting the importance of these loci for stress tolerance to be considered as candidate QTL of the traits associated with.

The Flax Genome

Author : Frank M. You
Publisher : Springer Nature
ISBN 13 : 3031160614
Total Pages : 301 pages
Book Rating : 4.0/5 (311 download)

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Book Synopsis The Flax Genome by : Frank M. You

Download or read book The Flax Genome written by Frank M. You and published by Springer Nature. This book was released on 2023-03-01 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Flax Genome is a comprehensive compilation of most recent studies focused on reference genome, genetic resources and molecular diversity, breeding, QTL mapping, gene editing tools, functional genomics and metabolomics, molecular breeding via genomic selection, and genomic resources. The flax genome reference sequences and the new genome assemblies are presented. A list of flax QTL and candidate genes associated with more than 35 traits, including yield and agronomic, seed quality and fatty acid composition, fibre quality and yield, abiotic stress, and disease resistance traits, are summarized. A QTL- based genomic selection strategy and genome–editing tools are systematically introduced. In addition, huge amounts of flax genomic resources generated in the last decade are summarized. The book contains 13 chapters with about 390 pages authored by globally reputed researchers in the relevant fields to this crop The book is intended to be useful to students, teachers, and researchers interested in traditional and molecular breeding, pathology, molecular genetics and breeding, bioinformatics and computational biology, and functional genomics

Genetics and Genomics of Linum

Author : Christopher A. Cullis
Publisher :
ISBN 13 : 9783030239657
Total Pages : pages
Book Rating : 4.2/5 (396 download)

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Book Synopsis Genetics and Genomics of Linum by : Christopher A. Cullis

Download or read book Genetics and Genomics of Linum written by Christopher A. Cullis and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Linum (flax) is a genus of about 200 species in the flowering plant family Linaceae. The genus includes common flax, which is one of the best fibers to produce linen, the seeds to produce linseed oil and has health-related properties of flax in human and animal nutrition. This book describes the genetics and genomics of Linum including the development of extensive experimental resources (e.g. whole genome sequence, efficient transformation methods, insertional mutant collections, large germplasm collections, resequenced genomes) that have led much progress and its economic importance. The methods and use of Linum to address a wide range of applications (e.g. disease resistance, cell wall composition, abiotic stress tolerance, floral development, natural diversity) is also discussed.

Genomic Designing for Abiotic Stress Resistant Oilseed Crops

Author : Chittaranjan Kole
Publisher : Springer Nature
ISBN 13 : 3030900444
Total Pages : 300 pages
Book Rating : 4.0/5 (39 download)

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Book Synopsis Genomic Designing for Abiotic Stress Resistant Oilseed Crops by : Chittaranjan Kole

Download or read book Genomic Designing for Abiotic Stress Resistant Oilseed Crops written by Chittaranjan Kole and published by Springer Nature. This book was released on 2022-04-05 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents deliberations on molecular and genomic mechanisms underlying the interactions of crop plants to the abiotic stresses caused by heat, cold, drought, flooding, submergence, salinity, acidity, etc., important to develop resistant crop varieties. Knowledge on the advanced genetic and genomic crop improvement strategies including molecular breeding, transgenics, genomic-assisted breeding, and the recently emerging genome editing for developing resistant varieties in oilseed crops is imperative for addressing FHNEE (food, health, nutrition, energy, and environment) security. Whole genome sequencing of these crops followed by genotyping-by-sequencing has provided precise information regarding the genes conferring resistance useful for gene discovery, allele mining, and shuttle breeding which in turn opened up the scope for 'designing' crop genomes with resistance to abiotic stresses. The eight chapters each dedicated to a oilseed crop in this volume elucidate on different types of abiotic stresses and their effects on and interaction with the crop; enumerate on the available genetic diversity with regard to abiotic stress resistance among available cultivars; illuminate on the potential gene pools for utilization in interspecific gene transfer; present brief on classical genetics of stress resistance and traditional breeding for transferring them to their cultivated counterparts; depict the success stories of genetic engineering for developing abiotic stress-resistant crop varieties; discuss on molecular mapping of genes and QTLs underlying stress resistance and their marker-assisted introgression into elite varieties; enunciate on different genomics-aided techniques including genomic selection, allele mining, gene discovery, and gene pyramiding for developing adaptive crop varieties with higher quantity and quality of yields, and also elaborate some case studies on genome editing focusing on specific genes for generating abiotic stress-resistant crops.

Linseed

Author : Sapna Langyan
Publisher : Elsevier
ISBN 13 : 0443154406
Total Pages : 276 pages
Book Rating : 4.4/5 (431 download)

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Book Synopsis Linseed by : Sapna Langyan

Download or read book Linseed written by Sapna Langyan and published by Elsevier. This book was released on 2024-08-30 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Linseed: A Multipurpose-Multisector Crop of Industrial Significance provides a general overview of linseed as a multipurpose-multisector crop for obtaining a number of valuable products. The book's sections present the use of linseed as food products and discuss a number of important topics, including genetic engineering and breeding advances, pre-harvest processing methods, advanced extraction and quality assessment, metabolic engineering, bioactivity, new food product development, chemistry, and functionality. The book also covers the use of linseed in the textile sector and modified linseed oil products, animal feed products, cosmetics, and personal use products, along with their industrial significance. Food waste and the challenges of linseed crop production and processing into a number of industrial products are also discussed. This book acts as a comprehensive resource for food scientists, researchers, scholars, and industrial people related to food, nutraceutical, cosmetics, pharmaceuticals, textiles, and health practitioners, especially dieticians and nutritionists. Provides a general overview of linseed as a multipurpose-multisector crop for obtaining a number of valuable product Covers the knowledge on the waste/by-products generated during the production and processing of linseed Explores detection and identification of bioactive components from linseed

Industrial Oil Crops

Author : Thomas McKeon
Publisher : Elsevier
ISBN 13 : 0128053852
Total Pages : 476 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis Industrial Oil Crops by : Thomas McKeon

Download or read book Industrial Oil Crops written by Thomas McKeon and published by Elsevier. This book was released on 2016-02-24 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Industrial Oil Crops presents the latest information on important products derived from seed and other plant oils, their quality, the potential environmental benefit, and the latest trends in industrial uses. This book provides a comprehensive view of key oil crops that provide products used for fuel, surfactants, paints and coatings, lubricants, high-value polymers, safe plasticizers and numerous other products, all of which compete effectively with petroleum-derived products for quality and cost. Specific products derived from oil crops are a principle concern, and other fundamental aspects of developing oil crops for industrial uses are also covered. These include improvement through traditional breeding, and molecular, tissue culture and genetic engineering contributions to breeding, as well as practical aspects of what is needed to bring a new or altered crop to market. As such, this book provides a handbook for developing products from renewable resources that can replace those currently derived from petroleum. Led by an international team of expert editors, this book will be a valuable asset for those in product research and development as well as basic plant research related to oil crops. Up-to-date review of all the key oilseed crops used primarily for industrial purposes Highlights the potential for providing renewable resources to replace petroleum derived products Comprehensive chapters on biodiesel and polymer chemistry of seed oil Includes chapters on economics of new oilseed crops, emerging oilseed crops, genetic modification and plant tissue culture technology for oilseed improvement

Genomic Designing of Climate-Smart Oilseed Crops

Author : Chittaranjan Kole
Publisher : Springer
ISBN 13 : 3319935364
Total Pages : 498 pages
Book Rating : 4.3/5 (199 download)

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Book Synopsis Genomic Designing of Climate-Smart Oilseed Crops by : Chittaranjan Kole

Download or read book Genomic Designing of Climate-Smart Oilseed Crops written by Chittaranjan Kole and published by Springer. This book was released on 2019-02-15 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights modern strategies and methods to improve oilseed crops in the era of climate change, presenting the latest advances in plant molecular breeding and genomics-driven breeding. Spectacular achievements in the fields of molecular breeding, transgenics and genomics in the last three decades have facilitated revolutionary changes in oilseed- crop-improvement strategies and techniques. Since the genome sequencing of rice, as the first crop plant, in 2002, the genomes of about one dozen oilseed crops have been sequenced and more are to follow. This has made it possible to decipher the exact nucleotide sequence and chromosomal positions of agroeconomic genes. Most importantly, comparative genomics and genotyping-by-sequencing have opened up new vistas for exploring available biodiversity, particularly of wild crop relatives, for identifying useful donor genes.

A Systematic Overview of Research Developments in Jute and Allied Fibre Crops

Author : Gouranga Kar
Publisher : Cambridge Scholars Publishing
ISBN 13 : 1036404897
Total Pages : 394 pages
Book Rating : 4.0/5 (364 download)

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Book Synopsis A Systematic Overview of Research Developments in Jute and Allied Fibre Crops by : Gouranga Kar

Download or read book A Systematic Overview of Research Developments in Jute and Allied Fibre Crops written by Gouranga Kar and published by Cambridge Scholars Publishing. This book was released on 2024-05-09 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a systematic overview of the recent developments in the production and processing of jute and allied fibres, giving insight into ways to improve their productivity in order to keep pace with the growing needs of an increasing population. The book will be particularly beneficial to agronomists, soil scientists, pathologists, biotechnologists, seed production specialists, market managers, industrialists, development agencies, graduate and postgraduate students, and other stakeholders associated with jute and allied fibre crop improvement, or market development in the public and private sectors. The book may also help to generate ideas surrounding the formulation of public-private collaborative research for future innovations regarding this crop.

Identification of Genomic Regions Involved in Stress Responsiveness in Flax by Genetic Mapping

Author : Cory Lyn Bickel
Publisher :
ISBN 13 :
Total Pages : 178 pages
Book Rating : 4.:/5 (112 download)

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Book Synopsis Identification of Genomic Regions Involved in Stress Responsiveness in Flax by Genetic Mapping by : Cory Lyn Bickel

Download or read book Identification of Genomic Regions Involved in Stress Responsiveness in Flax by Genetic Mapping written by Cory Lyn Bickel and published by . This book was released on 2011 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flax (Linum usitatissimum L.) undergoes heritable genomic changes in response to nutrient stress, including changes in total DNA content, rDNA copy number variation, and the insertion of Linum Insertion Sequence 1 (LIS-1). LIS-1 represents a novel type of insertion sequence, as it appears to be assembled from sequences dispersed throughout the flax genome before its insertion into a defined target sequence. To begin to find genes and genomic regions controlling the stress response, a genetic map of the flax genome was created using crosses between responsive and unresponsive lines of flax. Simple sequence repeats (SSRs) were isolated from the flax genome and markers that were polymorphic between the flax lines were used to create a preliminary genetic map, which contained 37 markers in 17 linkage groups. The responsiveness of the F2 offspring of reciprocal crosses between Stormont Cirrus, a responsive line, and Bethune, an unresponsive line, was determined. The appearance of LIS-1 was assayed using PCR on DNAs isolated from F2s grown under nutrient stress conditions at two time points. Changes in large and small rDNA copy number were also measured using quantitative PCR (qPCR). The number of loci involved in responsiveness was determined for each measure of responsiveness at each time point. Changes in rDNA copy number was determined to be the first step in the stress response, with 1-2 dominant loci controlling changes in the copy number of genes for large and small rDNA. The early insertion of LIS-1 appears to require 3-4 dominant loci, while a later response is controlled by 2 independent, dominant loci. The early LIS-1 response is linked to marker 258, while the late LIS-1 response is linked to marker JA23 and to the loci for the rDNA response. Marker 157-158 was linked to the rDNA response in the 5S genes. These markers indicate genomic regions in which the genes that control responsiveness reside, which can be analyzed in greater detail to identify specific genes controlling the response to nutrient stress in flax.

Comparative Genomics and Functional Genomics Analyses in Plants

Author : Xiaoming Song
Publisher : Frontiers Media SA
ISBN 13 : 2889669726
Total Pages : 479 pages
Book Rating : 4.8/5 (896 download)

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Book Synopsis Comparative Genomics and Functional Genomics Analyses in Plants by : Xiaoming Song

Download or read book Comparative Genomics and Functional Genomics Analyses in Plants written by Xiaoming Song and published by Frontiers Media SA. This book was released on 2021-07-05 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Agro-Morphological and Nutritional Profiling of Crops

Author : Sapna Langyan
Publisher : Frontiers Media SA
ISBN 13 : 2832539556
Total Pages : 191 pages
Book Rating : 4.8/5 (325 download)

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Book Synopsis Agro-Morphological and Nutritional Profiling of Crops by : Sapna Langyan

Download or read book Agro-Morphological and Nutritional Profiling of Crops written by Sapna Langyan and published by Frontiers Media SA. This book was released on 2023-11-21 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Accelerated Plant Breeding, Volume 4

Author : Satbir Singh Gosal
Publisher : Springer Nature
ISBN 13 : 3030811077
Total Pages : 549 pages
Book Rating : 4.0/5 (38 download)

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Book Synopsis Accelerated Plant Breeding, Volume 4 by : Satbir Singh Gosal

Download or read book Accelerated Plant Breeding, Volume 4 written by Satbir Singh Gosal and published by Springer Nature. This book was released on 2022-01-03 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant improvement has shifted its focus from yield, quality and disease resistance to factors that will enhance commercial export, such as early maturity, shelf life and better processing quality. Conventional plant breeding methods aiming at the improvement of a self-pollinating crop usually take 10-12 years to develop and release of the new variety. During the past 10 years, significant advances have been made and accelerated methods have been developed for precision breeding and early release of crop varieties. This book focuses on the accelerated breeding technologies that have been adopted for major oil crops. It summarizes concepts dealing with germplasm enhancement and development of improved varieties based on innovative methodologies that include doubled haploidy, marker assisted selection, marker assisted background selection, genetic mapping, genomic selection, high-throughput genotyping, high-throughput phenotyping, mutation breeding, reverse breeding, transgenic breeding, shuttle breeding, speed breeding, low cost high-throughput field phenotyping, etc. This edited volume is therefore an excellent reference on accelerated development of improved crop varieties.

Allele Mining for Genomic Designing of Oilseed Crops

Author : Chittaranjan Kole
Publisher : CRC Press
ISBN 13 : 1040103367
Total Pages : 315 pages
Book Rating : 4.0/5 (41 download)

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Book Synopsis Allele Mining for Genomic Designing of Oilseed Crops by : Chittaranjan Kole

Download or read book Allele Mining for Genomic Designing of Oilseed Crops written by Chittaranjan Kole and published by CRC Press. This book was released on 2024-09-18 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deliberates on the concept, strategies, tools, and techniques of allele mining in oilseed 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 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. The development of advanced genomic techniques, including PCR-based allele priming and Eco-TILLING-based allele mining, is now widely used 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 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 oilseed crops. 1. This is the first book on the novel strategy of allele mining in oilseed crops for precise breeding. 2. This book presents genomic strategies for mining superior alleles underlying agronomic traits from genomic resources. 3. This book depicts case studies of PCR-based allele priming and Eco-TILLING based allele mining. 4. This book elaborates on gene discovery and gene prediction in major oilseed crops. This book will be useful to students and faculties in various plant science disciplines, including genetics, genomics, molecular breeding, agronomy, and bioinformatics; scientists in seed industries; and policymakers and funding agencies interested in crop improvement.

Genomic Designing of Climate-Smart Cereal Crops

Author : Chittaranjan Kole
Publisher : Springer Nature
ISBN 13 : 3319933817
Total Pages : 321 pages
Book Rating : 4.3/5 (199 download)

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Book Synopsis Genomic Designing of Climate-Smart Cereal Crops by : Chittaranjan Kole

Download or read book Genomic Designing of Climate-Smart Cereal Crops written by Chittaranjan Kole and published by Springer Nature. This book was released on 2020-02-28 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights modern methods and strategies to improve cereal crops in the era of climate change, presenting the latest advances in plant molecular mapping and genome sequencing. Spectacular achievements in the fields of molecular breeding, transgenics and genomics in the last three decades have facilitated revolutionary changes in cereal- crop-improvement strategies and techniques. Since the genome sequencing of rice in 2002, the genomes of over eight cereal crops have been sequenced and more are to follow. This has made it possible to decipher the exact nucleotide sequence and chromosomal positions of agroeconomic genes. Most importantly, comparative genomics and genotyping-by-sequencing have opened up new vistas for exploring available biodiversity, particularly of wild crop relatives, for identifying useful donor genes.

Flax

Author : Alister D. Muir
Publisher : CRC Press
ISBN 13 : 0203437500
Total Pages : 320 pages
Book Rating : 4.2/5 (34 download)

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Book Synopsis Flax by : Alister D. Muir

Download or read book Flax written by Alister D. Muir and published by CRC Press. This book was released on 2003-05-22 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Linum usitatissimum is a widely distributed plant that has a long history of traditional use as both an industrial oil and fiber crop. It is known as linseed in the United Kingdom, or flax in North America. For the last 15 years, there has been a steadily growing interest in the medicinal and nutraceutical value of flax, including experimental evid

Genetics and Genomics of Linum

Author : Christopher A. Cullis
Publisher : Springer Nature
ISBN 13 : 3030239640
Total Pages : 270 pages
Book Rating : 4.0/5 (32 download)

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Book Synopsis Genetics and Genomics of Linum by : Christopher A. Cullis

Download or read book Genetics and Genomics of Linum written by Christopher A. Cullis and published by Springer Nature. This book was released on 2019-08-21 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Linum (flax) is a genus of about 200 species in the flowering plant family Linaceae. The genus includes common flax, which is one of the best fibers to produce linen, the seeds to produce linseed oil and has health-related properties of flax in human and animal nutrition. This book describes the genetics and genomics of Linum including the development of extensive experimental resources (e.g. whole genome sequence, efficient transformation methods, insertional mutant collections, large germplasm collections, resequenced genomes) that have led much progress and its economic importance. The methods and use of Linum to address a wide range of applications (e.g. disease resistance, cell wall composition, abiotic stress tolerance, floral development, natural diversity) is also discussed.

Analysis of Genetic Diversity and Expression of Genes Involved in Fatty Acid Composition in Flax (Linum Usitatissimum L.) and Comparative Genomic Analysis of Their Loci

Download Analysis of Genetic Diversity and Expression of Genes Involved in Fatty Acid Composition in Flax (Linum Usitatissimum L.) and Comparative Genomic Analysis of Their Loci PDF Online Free

Author : Dinushika Thambugala
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)

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Book Synopsis Analysis of Genetic Diversity and Expression of Genes Involved in Fatty Acid Composition in Flax (Linum Usitatissimum L.) and Comparative Genomic Analysis of Their Loci by : Dinushika Thambugala

Download or read book Analysis of Genetic Diversity and Expression of Genes Involved in Fatty Acid Composition in Flax (Linum Usitatissimum L.) and Comparative Genomic Analysis of Their Loci written by Dinushika Thambugala and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flax (Linum usitatissimum L.) is one of the richest plant sources of omega-3 fatty acids praised for their health benefits. In this study, the extent of the genetic variability for genes encoding stearoyl-ACP desaturase (SAD), fatty acid desaturase 2 (FAD2) and 3 (FAD3) was determined by sequencing the six paralogous genes from 120 flax accessions representing a broad range of germplasm including some EMS mutant lines. A total of 6 alleles for sad1 and sad2, 21 for fad2a, 5 for fad2b, 15 for fad3a and 18 for fad3b were identified. Deduced amino acid sequences of the alleles predicted 4, 2, 3, 4, 6, and 7 isoforms, respectively. Allele frequencies varied greatly across genes. Fad3a, with 110 SNPs and 19 indels, and fad3b, with 50 SNPs and 5 indels, showed the highest levels of genetic variation. While most of the SNPs and all the indels were silent mutations, both genes carried non-sense SNP mutations resulting in premature stop codons, a feature not observed in sad and fad2 genes. Some alleles and isoforms discovered in induced mutant lines were absent in the natural germplasm. Correlation of these genotypic data with fatty acid composition data of 120 flax accessions phenotyped in six field experiments revealed statistically significant correlations of some of the SAD and FAD isoforms on fatty acid composition, oil content and iodine value. The novel allelic variants and isoforms identified for the six desaturases will be a resource for the development of oilseed flax with unique and useful fatty acid profiles.