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Broadening Genetic Diversity In Canola Brassica Napus Germplasm Using The Brassica Oleracea Var Alboglabra C Genome
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Book Synopsis Broadening Genetic Diversity in Canola (Brassica Napus) Germplasm Using the Brassica Oleracea Var. Alboglabra C-genome by : Rick Allen Bennett
Download or read book Broadening Genetic Diversity in Canola (Brassica Napus) Germplasm Using the Brassica Oleracea Var. Alboglabra C-genome written by Rick Allen Bennett and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Broadening Genetic Diversity in Canola (Brassica Napus) Germplasm Using the B. Oleracea Var. Alboglabra C-genome by : Rick Allen Bennett
Download or read book Broadening Genetic Diversity in Canola (Brassica Napus) Germplasm Using the B. Oleracea Var. Alboglabra C-genome written by Rick Allen Bennett and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Broadening of Genetic Diversity in Spring Canola (Brassica Napus L.) by Use of the C-genome of Brassica Oleracea Var. Alboglabra and B. Oleracea Var. Botrytis by : Rameez Iftikhar
Download or read book Broadening of Genetic Diversity in Spring Canola (Brassica Napus L.) by Use of the C-genome of Brassica Oleracea Var. Alboglabra and B. Oleracea Var. Botrytis written by Rameez Iftikhar and published by . This book was released on 2015 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spring oilseed Brassica napus L. (AACC, 2n = 38) canola is one of the most important crop in Canada, widely grown in the Prairie Provinces Alberta, Manitoba and Saskatchewan. Presence of genetic diversity in breeding material is pre-requisite for developing new cultivars with desirable traits as well as for progress in breeding. The narrow genetic diversity in spring B. napus canola can be broadened by enriching its C-genome with the C-genome of progenitor species Brassica oleracea L. The present research was undertaken to study the feasibility of introgressing allelic diversity from B. oleracea var. alboglabra and B. oleracea var. botrytis into Canadian spring B. napus canola for the improvement of this crop. For this, Brassica napus × B. oleracea interspecific crosses were made and the F1's were either self-pollinated for F2 or backcrossed to the B. napus parent for BC1 seeds. The F2- and BC1-derived populations were subjected to self-pollination with selection in each generation for different agronomic and seed quality traits including erucic acid and glucosinolate contents from where F8 and BC1F7 families were developed. The interspecific cross derived plants were analysed by a flow cytometer to estimate their approximate chromosome number; while the extent of genetic diversity introgressed from B. oleracea into these plants was assessed by the use of simple sequence repeat (SSR) markers. Plant fertility was low in early generation populations. However, inbreeding with selection for fertile plants resulted in B. napus plants in advanced generation populations. Silique size and number of seeds per silique in many of the advanced generation plants was comparable to the B. napus parent. Segregation for erucic acid and glucosinolate contents in the populations derived from this interspecific cross involved only the C-genome alleles; this enabled efficient selection of canola quality plants from both F2- and BC1-derived populations. Molecular marker analysis showed that the plants derived from both F2 and BC1 are genetically distinct from the B. napus parent; this demonstrated the feasibility of introgressing allelic diversity from B. oleracea var. alboglabra and B. oleracea var. botrytis into spring B. napus canola.
Book Synopsis Broadening of Genetic Diversity in Spring Canola (Brassica Napus L.) by Use of the C Genome of Brassica Oleracea Var. Italica and Brassica Oleracea Var. Capitata by : Xin Wang
Download or read book Broadening of Genetic Diversity in Spring Canola (Brassica Napus L.) by Use of the C Genome of Brassica Oleracea Var. Italica and Brassica Oleracea Var. Capitata written by Xin Wang and published by . This book was released on 2016 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spring canola Brassica napus L. (AACC, 2n = 38) is one of the major crops in Canada. A decline in genetic diversity in breeding populations is a threat for continued improvement of this crop from a long-term perspective. Genetic diversity in Canadian spring B. napus canola can be broadened through introgression of allelic diversity from its diploid progenitor species Brassica rapa L., Brassica oleracea L., and other allied species of the family Brassicaceae. This M.Sc. thesis research investigated the feasibility of introgression of new alleles from two variants of B. oleracea, viz. B. oleracea var. italica (broccoli) and var. capitata (cabbage) into spring B. napus canola. For this, B. napus × B. oleracea interspecific crosses were made and the F1 plants were self-pollinated for F2 seeds as well as backcrossed to the B. napus parent for backcross (BC1) seeds. The F2 and BC1 populations were self-pollinated for several generations with selection for canola quality traits for the development of euploid B. napus (2n = 38) plants. Plant fertility was poor in early generations; however, it improved with the progression of generation. Flow cytometric analysis for nuclear DNA content showed that the majority of the advanced generation plants were similar to the B. napus parent. Segregation for erucic acid and glucosinolate contents was found in all populations where selection for zero erucic acid and low glucosinolate content led to the development of canola quality lines in advanced generation. Estimation of genetic diversity in F4 and BC1F3 populations by the use of simple sequence repeats (SSR) markers showed that B. oleracea alleles introgressed in the progeny derived from B. napus × B. oleracea crosses. Thus, the results from this study demonstrated the viability of introducing alleles from broccoli and cabbage into spring B. napus canola.
Book Synopsis Broadening of Genetic Diversity in Spring Canola (Brassica Napus L.) by Use of Yellow Sarson and Canadian Spring Brassica Rapa L. by : Rohit Attri
Download or read book Broadening of Genetic Diversity in Spring Canola (Brassica Napus L.) by Use of Yellow Sarson and Canadian Spring Brassica Rapa L. written by Rohit Attri and published by . This book was released on 2015 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: Canada is the top producer of Brassica oilseeds [B. napus L. (n = 19, AC genome)] in the world. Genetic diversity has declined in this crop in the recent years due to use of only superior and genetically narrow gene pool in breeding. Presence of adequate genetic diversity is important for further improvement of this crop through breeding. Genetically distinct germplasm of B. napus or its allied species can be used to broaden genetic diversity in Canadian B. napus canola. However, limited efforts have been made to utilize genetic diversity of the progenitor species B. rapa (n = 10, A genome) and B. oleracea (n = 9, C genome) in the breeding of this crop as interspecific cross often introduces undesirable traits in the breeding program. This M.Sc. thesis research was undertaken to develop genetically distinct B. napus lines through interspecific crosses between B. napus canola and B. rapa. For this, three genetically distinct B. rapa lines were used. The F1's of B. napus × B. rapa interspecific crosses were self-pollinated for F2 as well as backcrossed to the B. napus parent for BC1F1 progenies. Pedigree breeding was applied where selection for plant fertility and glucosinolate content was done in each generation. SSR marker analysis of the F4 plants revealed that the three populations derived from B. napus × B. rapa crosses are genetically distinct from each other as well as from the B. napus parent; thus, the advanced generation populations derived from the progeny of these plants expected to carry allelic diversity of the B. rapa parents. Plant fertility and glucosinolates content in many of the F7 and BC1F4 families reached close to the B. napus parent. Flow cytometric analysis of F6 and BC1F3 families for nuclear DNA content indicated that many families are euploid B. napus type. Findings from this thesis research suggest that genetically distinct, fertile, euploid B. napus canola lines can be developed from both F2 and BC1F1 of the B. napus × B. rapa interspecific crosses.
Book Synopsis The Brassica napus Genome by : Shengyi Liu
Download or read book The Brassica napus Genome written by Shengyi Liu and published by Springer. This book was released on 2018-10-22 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes how the genome sequence contributes to our understanding of allopolyploidisation and the genome evolution, genetic diversity, complex trait regulation and knowledge-based breeding of this important crop. Numerous examples demonstrate how widespread homoeologous genome rearrangements and exchanges have moulded structural genome diversity following a severe polyploidy bottleneck. The allopolyploid crop species Brassica napus has the most highly duplicated plant genome to be assembled to date, with the largest number of annotated genes. Examples are provided for use of the genome sequence to identify and capture diversity for important agronomic traits, including seed quality and disease resistance. The increased potential for detailed gene discovery using high-density genetic mapping, quantitative genetics and transcriptomic analyses is described in the context of genome availability and illustrated with recent examples. Intimate knowledge of the highly-duplicated gene space, on the one hand, and the repeat landscape on the other, particularly in comparison to the two diploid progenitor genomes, provide a fundamental basis for new insights into the regulatory mechanisms that are coupled with selection for polyploid success and crop evolution.
Book Synopsis Brassica Improvement by : Shabir Hussain Wani
Download or read book Brassica Improvement written by Shabir Hussain Wani and published by Springer Nature. This book was released on 2020-03-13 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global population is mounting at an alarming stride to surpass 9.3 billion by 2050, whereas simultaneously the agricultural productivity is gravely affected by climate changes resulting in increased biotic and abiotic stresses. The genus Brassica belongs to the mustard family whose members are known as cruciferous vegetables, cabbages or mustard plants. Rapeseed-mustard is world’s third most important source of edible oil after soybean and oil palm. It has worldwide acceptance owing to its rare combination of health promoting factors. It has very low levels of saturated fatty acids which make it the healthiest edible oil that is commonly available. Apart from this, it is rich in antioxidants by virtue of tocopherols and phytosterols presence in the oil. The high omega 3 content reduces the risk of atherosclerosis/heart attack. Conventional breeding methods have met with limited success in Brassica because yield and stress resilience are polygenic traits and are greatly influenced by environment. Therefore, it is imperative to accelerate the efforts to unravel the biochemical, physiological and molecular mechanisms underlying yield, quality and tolerance towards biotic and abiotic stresses in Brassica. To exploit its fullest potential, systematic efforts are needed to unlock the genetic information for new germplasms that tolerate initial and terminal state heat coupled with moisture stress. For instance, wild relatives may be exploited in developing introgressed and resynthesized lines with desirable attributes. Exploitation of heterosis is another important area which can be achieved by introducing transgenics to raise stable CMS lines. Doubled haploid breeding and marker assisted selection should be employed along with conventional breeding. Breeding programmes aim at enhancing resource use efficiency, especially nutrient and water as well as adoption to aberrant environmental changes should also be considered. Biotechnological interventions are essential for altering the biosynthetic pathways for developing high oleic and low linolenic lines. Accordingly, tools such as microspore and ovule culture, embryo rescue, isolation of trait specific genes especially for aphid, Sclerotinia and alternaria blight resistance, etc. along with identification of potential lines based on genetic diversity can assist ongoing breeding programmes. In this book, we highlight the recent molecular, genetic and genomic interventions made to achieve crop improvement in terms of yield increase, quality and stress tolerance in Brassica, with a special emphasis in Rapeseed-mustard.
Book Synopsis Genetics, Genomics and Breeding of Oilseed Brassicas by : Dave Edwards
Download or read book Genetics, Genomics and Breeding of Oilseed Brassicas written by Dave Edwards and published by CRC Press. This book was released on 2011-09-13 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book describes the history of Brassica oilseed crops, introduces the Brassica genome, its evolution, diversity, classical genetic studies, and breeding. It also delves into molecular genetic linkage and physical maps, progress with genome sequencing initiatives, mutagenesis approaches for trait improvement, proteomics, metabolomics, and bioinfo
Book Synopsis The Brassica oleracea Genome by : Shengyi Liu
Download or read book The Brassica oleracea Genome written by Shengyi Liu and published by Springer Nature. This book was released on 2021-03-04 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents comprehensive information on genetics, genomics and breeding in Brassica oleracea, an agriculturally important species that includes popular vegetable crops such as cabbage, cauliflower, broccoli, Brussels sprouts, kale, collard greens, savoy, kohlrabi, and gai lan. The content spans whole genome sequencing, assembly and gene annotation for this global vegetable species, along with molecular mapping and cloning of genes, physical genome mapping and analyses of the structure and composition of centromeres in the B. oleracea genome. The book also elaborates on asymmetrical genome evolution and transposable elements in the B. oleracea describes gene family differentiation in comparison to other Brassica species and structural and functional genomic resources and data bases developed for B. oleracea. Useful discussions on the impact of genome sequencing on genetic improvement in the species are also included.
Book Synopsis The Brassica Napus Genome by : Shengyi Liu (Plant geneticist)
Download or read book The Brassica Napus Genome written by Shengyi Liu (Plant geneticist) and published by . This book was released on 2018 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book describes how the genome sequence contributes to our understanding of allopolyploidisation and the genome evolution, genetic diversity, complex trait regulation and knowledge-based breeding of this important crop. Numerous examples demonstrate how widespread homoeologous genome rearrangements and exchanges have moulded structural genome diversity following a severe polyploidy bottleneck. The allopolyploid crop species Brassica napus has the most highly duplicated plant genome to be assembled to date, with the largest number of annotated genes. Examples are provided for use of the genome sequence to identify and capture diversity for important agronomic traits, including seed quality and disease resistance. The increased potential for detailed gene discovery using high-density genetic mapping, quantitative genetics and transcriptomic analyses is described in the context of genome availability and illustrated with recent examples. Intimate knowledge of the highly-duplicated gene space, on the one hand, and the repeat landscape on the other, particularly in comparison to the two diploid progenitor genomes, provide a fundamental basis for new insights into the regulatory mechanisms that are coupled with selection for polyploid success and crop evolution"--Publisher's description.
Book Synopsis Genetics, Genomics and Breeding of Vegetable Brassicas by : Jan Sadowski
Download or read book Genetics, Genomics and Breeding of Vegetable Brassicas written by Jan Sadowski and published by CRC Press. This book was released on 2016-04-19 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to their diversity, vegetable Brassicas are of great economic import and offer unique opportunities to enrich our knowledge about plant growth, development, and rapid phenotypic evolution. By applying emerging genomic technologies, we may greatly increase our understanding of the Brassica biology and breeding efficiency. This volume contains 11
Book Synopsis The Brassica juncea Genome by : Chittaranjan Kole
Download or read book The Brassica juncea Genome written by Chittaranjan Kole and published by Springer Nature. This book was released on 2022-03-08 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first comprehensive compilation of deliberations on elucidation and augmentation of the genome of Brassica juncea, one of the leading oilseed crops of the world, popularly called as brown mustard, Indian mustard, Chinese mustard, or Oriental mustard. It includes discussions on genepools; genetic diversity and its characterization; classical genetic and traditional breeding; basics and application of heteroploidy; techniques and applications of introgressive hybridization; in vitro culture for micro-propagation, somatic mutation, somatic embryogenesis, and somatic hybridization; genetic engineering including genetic transformation and gene silencing; and molecular genetic mapping and mapping of genes and comprehensive delineations on genome sequencing and comparative genomics; resequencing for elucidation of origin and diversity; large-scale genome analysis; plastid genome sequence; transcriptomics; metabolomics; proteomics; evolutionary genomics; role of regulatory genes in development and adaptation and their utilization in trait improvement; precise breeding for yield, quality, and resistance to biotic and abiotic stresses; and prospects of genome editing.
Book Synopsis Brassica Germplasm by : Mohamed A. El-Esawi
Download or read book Brassica Germplasm written by Mohamed A. El-Esawi and published by BoD – Books on Demand. This book was released on 2018-10-24 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: The genus Brassica L. of the family Brassicaceae has a vital role in agriculture and human health. The genus comprises several species, including major oilseed and vegetable crops with promising agronomic traits. Brassica secondary products have antibacterial, antioxidant and antiviral effects. Characterization of Brassica is important for providing information on domestication, propagation and breeding programs, as well as conservation of plant genetic resources. This book highlights the current knowledge of the genus Brassica L. in order to understand its biology, diversity, conservation and breeding, as well as to develop disease-resistant and more productive crops. This book will be of interest to many readers, researchers and scientists, who will find this information useful for the advancement of their research towards a better understanding of Brassica breeding programs.
Book Synopsis DNA Marker Assisted Breeding in Interspecific Crosses to Improve Canola (Brassica Napus L.) by : Christopher James Schelfhout
Download or read book DNA Marker Assisted Breeding in Interspecific Crosses to Improve Canola (Brassica Napus L.) written by Christopher James Schelfhout and published by . This book was released on 2007 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: [Truncated abstract] In order to expand the gene pool of canola-quality rapeseed (Brassica napus) reciprocal interspecific crosses were made between B. napus cv. Mystic and near canola-quality B. juncea breeding line JN29. F1 progeny from these crosses were used to make backcrosses to both parents in all possible combinations and directions, and were selfed to form F2-derived lines. The highest frequencies of viable F2 and BC1 progeny were obtained when B. napus was the maternal parent of the interspecific hybrid. BC1 and F2 progeny (and subsequent generations) were grown under field conditions to identify agronomic improvements over the parents. Transgressive segregation was observed in F2 and BC1 and in subsequent generations for agronomic traits (seed yield under high or low rainfall conditions, plant biomass, harvest index, height, branching and days to anthesis) and seed quality traits (oil, protein, glucosinolates, oleic acid). The majority of progeny conformed to B. napus morphology, and a minority segregated to B. juncea morphology in subsequent generations. Some of the B. juncea morphotypes had lower glucosinolates and higher oleic acid than the parent JN29, with no detectable erucic acid, and thereby conformed to canola quality. Methods were developed for tracing B-genome in interspecific progeny. A repetitive DNA sequence pBNBH35 from B. nigra (genome BB, 2n = 16) was used to identify B-genome chromosomes and introgressions in interspecific progeny. Specific primers were designed for pBNBH35 in order to amplify the repetitive sequence by PCR. A cloned sub-fragment of 329 bp was confirmed by sequencing as part of pBNBH35. PCR and hybridisation techniques were used on an array of Brassica species to confirm that the pBNBH35 subfragment was Brassica B-genome specific. Fluorescence in situ hybridisation (FISH) in B nigra, B. juncea (AABB, 2n=36) and B. napus (AACC, 2n=38) showed that the pBNBH35 sub-fragment was present on all eight Brassica Bgenome chromosomes and absent from A- and C-genome chromosomes. The pBNBH35 repeat was localised to the centromeric region of each B-genome chromosome. FISH clearly distinguished the B-genome chromosomes from the A-genome chromosomes in the amphidiploid species B. juncea. This is the first known report of a B-genome repetitive marker that is present on all Brassica Bgenome chromosomes. ... The results suggest that novel B. napus genotypes have been generated containing introgressions of B-genome chromatin from B. juncea chromosomes. B. juncea morphology occurred in interspecific progeny with a chromosome complement similar to B. napus (2n = 38) and without the entire Bgenome present. It also is highly likely that recombination has occurred between the A-genome of the two Brassica species. This research has demonstrated that the secondary gene pool of B. napus may be accessed by selfing interspecific hybrids, and without sacrificing canola quality, if the B. juncea parent is near canola-quality. Interspecific progeny may be screened to enhance the proportion with B-genome positive signals. Some progeny with B. junceatype morphology had improved seed quality over the JN29 parent.
Book Synopsis Towards the Creation of a Trigenomic Hexaploid 'super Brassica' from Interspecific Hybridisation Between B. Napus and B. Nigra by : Aneeta Pradhan
Download or read book Towards the Creation of a Trigenomic Hexaploid 'super Brassica' from Interspecific Hybridisation Between B. Napus and B. Nigra written by Aneeta Pradhan and published by . This book was released on 2010 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: [Truncated abstract] Brassica napus (canola, oilseed rape) is a tetraploid (4x) species, the highest natural ploidy in the genus Brassica. Hexaploid crops (6x), such as bread wheat, kiwifruit, triticale and oat, benefit from broader adaptation, greater vigour and high yield potential compared to their lower ploidy ancestral species. However, no species in the genus Brassica are natural hexaploids. There is increasing interest in developing a trigenomic Brassica hexaploid species with genome complement AABBCC containing three basic genomes originating from the natural diploids B. rapa (AA), B. nigra (BB) and B. oleracea (CC). The approach tested in this thesis was to perform interspecific hybridisation between allotetraploid canola (B. napus, AACC, 2n = 38) and diploid black mustard (B. nigra, BB, 2n = 16) to produce triploid F1 hybrids with the genome composition ABC, which were then subjected to chromosome doubling to produce a new fertile hexaploid Brassica species (AABBCC). Brassica napus has a relatively narrow gene pool as a result of several genetic bottlenecks in its evolution, including the intensive breeding for high quality oil and meal traits. In contrast, B. nigra is a relatively undeveloped wild or landrace oilseed crop and is rich in genetic diversity. Black mustard is hardy, suitable as a rainfed crop under varied climatic conditions and yields well under extreme conditions. The B genome of B. nigra is an important source of useful genes including disease and pest resistance and other biotic and abiotic stress tolerances. The breeding target of this research is to combine the complementary characteristics of B. napus and B. nigra in a new hexaploid Brassica species that is both productive and tolerant to range of biotic and abiotic stresses. Successful interspecific crosses are highly dependent on diverse genotype selection to combine desirable traits and enhanced performance through heterosis. Brassica nigra is an important parent species as it contains the B genome, but its genetic diversity has not been thoroughly explored. Genetic diversity of 180 B. nigra genotypes from 60 different accessions was evaluated using 20 simple sequence repeat (SSR) markers selected for high quality and even distribution across the A, B and C genomes. Five other Brassica species (2 lines each) were included for comparison. High quality alleles (218) were used to generate a genetic distance matrix, and clustering and multidimensional scaling analyses indicated a high level of genetic variation in B. nigra. During the course of this study, it became evident through molecular and morphological analysis that several accessions classified by genebanks as B. nigra were actually B. juncea (13 accessions), B. rapa (2 accessions) and B. carinata (1 accession). The remaining 44 B. nigra accessions (73%) formed morphologically and genetically distinct groups associated with country or region of origin, notably Ethiopia, Israel, India and Europe. Most accessions were highly heterozygous, consistent with their obligate outcrossing habit. This information will assist in the selection of widely diverse genotypes for genebank core collections of B. nigra and for breeding purposes...
Book Synopsis Population Genomic Analysis Reveals Differential Evolutionary Histories and Patterns of Diversity Across Subgenomes and Subpopulations of Brassica Napus L. by :
Download or read book Population Genomic Analysis Reveals Differential Evolutionary Histories and Patterns of Diversity Across Subgenomes and Subpopulations of Brassica Napus L. written by and published by . This book was released on 2016 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here, the allotetraploid species Brassica napus L. is a global crop of major economic importance, providing canola oil (seed) and vegetables for human consumption and fodder and meal for livestock feed. Characterizing the genetic diversity present in the extant germplasm pool of B. napus is fundamental to better conserve, manage and utilize the genetic resources of this species. We used sequence-based genotyping to identify and genotype 30,881 SNPs in a diversity panel of 782 B. napus accessions, representing samples of winter and spring growth habits originating from 33 countries across Europe, Asia, and America. We detected strong population structure broadly concordant with growth habit and geography, and identified three major genetic groups: spring (SP), winter Europe (WE), and winter Asia (WA). Subpopulation-specific polymorphism patterns suggest enriched genetic diversity within the WA group and a smaller effective breeding population for the SP group compared to WE. Interestingly, the two subgenomes of B. napus appear to have different geographic origins, with phylogenetic analysis placing WE and WA as basal clades for the other subpopulations in the C and A subgenomes, respectively. Finally, we identified 16 genomic regions where the patterns of diversity differed markedly from the genome-wide average, several of which are suggestive of genomic inversions. The results obtained in this study constitute a valuable resource for worldwide breeding efforts and the genetic dissection and prediction of complex B. napus traits.
Book Synopsis Breeding Oilseed Brassicas by : Kuldeep S. Labana
Download or read book Breeding Oilseed Brassicas written by Kuldeep S. Labana and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present status of rapeseed-mustard crops as the third most important source of edible oils is attributable to the success of plant breeders and associate researchers in developing high yielding varieties with improved quality and resistance to biotic and abiotic stresses. However, the need to maximize the production gains and quality at lower economic costis greater than ever before. "Breeding Oilseed Brassicas" was thus conceived to review the past accomplishments in order to identify research gaps and suggest ways and means to meet the challenge of sustainable productivity upgradation. Theoretical and applied aspects ofbreeding, genetics, cytogenetics, crop physiology, and biotechnology are covered. The emphasis is on the application of theoretical knowledge to the solution of problems that confront the Brassica breeders.
