Genetic Mapping and Trait Analysis in Bambara Groundnut (Vigna Subterranea (L.) Verdc.) PDF Download

Author: Shravani M. Basu
Publisher:
ISBN:
Category : Bambara groundnut
Languages : en
Pages : 514

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Author: Nariman Salih Ahmad
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Nariman Ahmad
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659217067
Category :
Languages : en
Pages : 324

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Bambara groundnut (Vigna subterranean L. Verdc.) as one of the legume crops belongs to the Phaseoloid-Millettioid clade, which diverged some 45-50 million years ago from the Hologalegina clade. Due to the shortage growing period of Bambara groundnut it ranks the third most important food legume crop in semi-arid Africa in terms of production and consumption. It is highly drought tolerant and resists pest and disease. Bambara groundnut is a rich source of protein, contributing to alleviate nutritional problems in areas where staple foods are predominantly carbohydrate sources. Despite these potential of bambara groundnut it is inadequately characterized and neglected by research community. Employing new biotechnological tools such as DNA markers for mapping and identifying genes for desirable traits can accelerate the improvement of this crop genetically. This book covers the recent progress on genome research in bambara groundnut, including genetic map and QTL analysis using microsatellite and Diversity array technique markers. This will help breeders to effectively pyramid desirable genes into the cultivars in a much shorter time than would possible by conventional breeding.

Author:
Publisher: Bioversity International
ISBN: 9290434619
Category : Bambara groundnut
Languages : en
Pages : 57

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Author: Ozie Odireleng Molosiwa
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Bambara groundnut is an indigenous African legume grown mainly in sub-Saharan Africa; it is an important source of protein to the rural majority. There are no established varieties and subsistence farmers grow locally adapted landraces which are generally low yielding. Bambara groundnut is a predominantly self-pollinating crop and is expected to exist as non-identical inbred lines, although the previous lack of co-dominant markers has prevented a formal assessment of heterozygosity within bambara groundnut genotypes. A total set of 75 microsatellites that were characterised in this study were used to investigate the genetic diversity of a set of 24 bambara groundnut landraces, to provide an evaluation of the markers for polymorphism and provide a link with DArT marker data that were previously analysed. Sixty eight microsatellites were identified that were found to be consistent and reproducible, from which a set of markers were selected and used for genetic variability studies of bambara groundnut, to compare the use of molecular markers with morphological markers, and to investigate using SSR markers in pure line selection. The genetic diversity of bambara groundnut was assessed based on morphological characters for two seasons; in a glasshouse experiment at the University of Nottingham, Sutton Bonington Campus, UK and in a field experiment that was conducted at the Botswana College of Agriculture (Notwane farm), Gaborone in a randomised block design with three replicates. The landraces were characterised for 24 quantitative and 13 qualitative characters. The results indicated considerable variation for quantitative characters, while significant morphological differences were also recorded for most characters. Multivariate data analysis was conducted using principal component analysis, cluster analysis and heritability estimates were developed. The low cost, simplicity and agricultural relevance of morphological characterisation makes it an important tool in germplasm genetic variation studies. Thirty four lines from field experiments were investigated for genetic diversity based on 20 microsatellites. The expected heterozygosity (He) had an average of 1 in agreement with the fact that bambara groundnut is predominantly self-pollinating. Both cluster analysis and principle component analysis (PCoA) grouped landraces based mainly on their areas of origin. A thorough molecular analysis of genetic and morphological variation in bambara groundnut was conducted to investigate the relationship between the two assessment techniques. This comparison will assist in breeders making informed decisions as to which approach is best to use in germplasm characterisation and plant breeding and how best to apply such knowledge in practical situations. DNA markers could then aid with the selection of germplasm for breeding, quality control within breeding programmes and, potentially, direct selection via Marker Assisted Selection (MAS). Euclidean distance estimates for morphological data and (Nei's 1972) genetic distance estimates for SSR data were strongly correlated (r = 0.7; P

Author: Mark A. Chapman
Publisher: Springer Nature
ISBN: 3031008480
Category : Science
Languages : en
Pages : 460

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This book highlights the uses for underutilized crops, presenting the state-of-the-art in terms of genome sequencing for over 30 crops, previously understudied and under-researched. In a changing climate and with significant pressure on the land, it is the ideal time to be discussing novel crops, with significant biotic and abiotic tolerances and/or rich nutrient profiles for consumers. Previously, the only species with sequenced genomes were high-profile internationally recognized crops, but in the current era genomes are being sequenced for dozens of crops, including those previously classified as underutilized, now being investigated. This book covers food crops, from fruits to tubers, and from grasses to legumes, as well as crops with non-food applications. Some of these crops have draft genomes, and others have polished genomes with extensive resequencing panels. Each chapter tells the story of an individual crop or crop group, written by experts, focusing on the genome data available, revealing more about crop domestication and genetic variation, and the current and future prospects given that this data is now becoming available. It also highlights how even small sequencing projects can provide draft genome sequences suitable for gene discovery, comparative genomics, and identification of molecular markers for understanding these crops further.

Author: Mohar Singh
Publisher: Springer
ISBN: 8132220234
Category : Science
Languages : en
Pages : 221

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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.

Author: Odireleng Ozie Molosiwa
Publisher:
ISBN:
Category : Bambara groundnut
Languages : en
Pages : 518

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Author: Omena Bernard Ojuederie
Publisher: Frontiers Media SA
ISBN: 2832543324
Category : Science
Languages : en
Pages : 151

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Global demand for food is rising as a result of increases in the global population as well as dietary changes. Furthermore, climate change exerts additional pressure on the food supply, adversely affecting sustainable food production. Increased temperatures and drought stresses coupled with the migration of pests limit crop yields and affect their nutritional quality. Many staple crops are unable to adapt to these changing climatic conditions. To achieve the Sustainable Development Goals of the United Nation to end hunger and promote good health and well-being, concerted efforts need to be made to enhance food production while mitigating the effects of climate change through the promotion of climate-smart agricultural practices and the utilization of neglected and underutilized crop species. These species can be highly nutritious and well-adapted to different agroecologies and climatic conditions, meaning that they offer the possibility of improving food and nutritional security.

Author: Florian Stadler
Publisher:
ISBN:
Category :
Languages : en
Pages :

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