Download or read book Genetic Diversity Analysis of Germplasm Lines in French Bean Phaseolus Vulgaris L written by R. Sanjeev Kumar and published by . This book was released on 2017 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Diversity in French Bean Phaseolus Vulgaris L Germplasm Lines written by Nishimwe Immaculee and published by . This book was released on 2011 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characterization of the Genetic Diversity in Common Beans Phaseolus Vulgaris L Using RFLP Markers written by Viviana Lorena Becerra Velasquez and published by . This book was released on 1992 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Resources of Phaseolus Beans written by Paul Gepts and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 609 pages. Available in PDF, EPUB and Kindle. Book excerpt: The period following the second world war has witnessed an expanding commitment to incr~ased food production in tropical countries. Public and private initiatives at the national and international levels have led to the creation of programs geared specifically towards the improvement of food crops in tropical conditions. Examples of this increased commitment are the network of international agricultural research centers and numerous bilateral aid projects. As a consequence, crop improvement has become a truly worldwide endeavor, relying on an international network of institutions and collaborators. This holds also for Phaseolus beans. Following the discovery of the Americas, Phaseolus beans became distributed on all six continents. Yet, until not so long ago, most of the research on Phaseolus improvement took place in developed countries. In recognition of the nutritional importance of Phaseolus beans in developing countries, this has changed considerably in the last years, principally perhaps through the activities of the Centro Internacional de Agricultura Tropical (CIAT) and the International Board for Plant Genetic Resources (IBPGR). Consequently, the scope of the research on Phaseolus has broadened considerably and the number of Phaseolus researchers is larger than ever before.

Download or read book Genetic Evaluation of Some French Bean Phaseolus Vulgaris L Lines written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Molecular Basis of Plant Genetic Diversity written by Mahmut Caliskan and published by IntechOpen. This book was released on 2012-03-30 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Molecular Basis of Plant Genetic Diversity presents chapters revealing the magnitude of genetic variations existing in plant populations. Natural populations contain a considerable genetic variability which provides a genomic flexibility that can be used as a raw material for adaptation to changing environmental conditions. The analysis of genetic diversity provides information about allelic variation at a given locus. The increasing availability of PCR-based molecular markers allows the detailed analyses and evaluation of genetic diversity in plants and also, the detection of genes influencing economically important traits. The purpose of the book is to provide a glimpse into the dynamic process of genetic variation by presenting the thoughts of scientists who are engaged in the generation of new ideas and techniques employed for the assessment of genetic diversity, often from very different perspectives. The book should prove useful to students, researchers, and experts in the area of conservation biology, genetic diversity, and molecular biology.

Download or read book Genetic Differentiation Between Wild and Cultivated Common Bean Phaseolus Vulgaris L written by Epimaki Mennas Kimolo Koinange and published by . This book was released on 1992 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Diversity and Path Analysis in French Bean written by S. S. Shinde and published by . This book was released on 1999 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Diversity and Path Analysis in French Bean written by V. V. Masal and published by . This book was released on 2000 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Parameters and Stability Analysis in French Bean written by Anjani Kumar Singh and published by LAP Lambert Academic Publishing. This book was released on 2014-01 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present investigation on "Studies on genetic parameters and stability analysis in French bean (Phaseolus vulgaris L.)" was carried out with 20 genotypes grown under three environments viz. E-I (80 kg N/ha), E-II (120 kg N/ha) and E-III (160 kg N/ha). The experiment was carried out during rabi 2002-03 and 2003-04 at Agricultural Research Farm, R.B.S. College, Bichpuri, Agra, in split plot design with three replications, in each environment. Observations were recorded on 5 randomly selected plants for 10 characters viz., days to 50% flowering, plant height, number of branches/plant, number of pods/plant, pod diameter, pod length, number of seeds/pod, 10-pod weight, green pod yield/plant and green pod yield/plot. Mean data were subjected to various statistical analysis. Stability analysis by Eberhart and Russell (1966) and the selection parameters by standard procedure were used for computation.

Download or read book Genetic and Genomic Resources of Grain Legume Improvement written by Lucia Lioi and published by Elsevier Inc. Chapters. This book was released on 2013-07-18 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this chapter, we lead the reader through several topics related to common bean germplasm, including crop dissemination across the Old World, landraces developed by farmers, characterization and safeguard of germplasm. These topics are attracting a great deal of attention, especially in recent years, when the international community has become increasingly aware of the relevance of safeguarding plant genetic resources. Early studies were mainly aimed at performing exploratory analyses of agro-morphological traits, with the goal of improving yield and pest resistance. Moreover, phaseolin variation was studied to check the distribution of the two common bean gene pools. The recent development of DNA-based markers has allowed significant improvement in knowledge on genetic variation within the European germplasm, as well as the capacity to trace its divergence from the American germplasm. The different strategies applied to safeguard the European germplasm are described together with their drawbacks.

Download or read book Toward Genomics based Breeding in Phaseolus Vulgaris and Quantitative Trait Locus Mapping of Angular Leaf Spot Resistance written by Tamara Iva Miller and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The common bean (Phaseolus vulgaris L.) is consumed by millions of people worldwide and is a staple source of protein, starch and micronutrients. Common bean production across the world is affected by abiotic and biotic stresses that limit the growth and yield of this important crop. Efforts to breed improved common bean for dissemination to farmers and consumers in East Africa is underway in several breeding programs worldwide. Improvement on agronomic and consumer traits such as disease resistance can be greatly aided by the application of next generation sequencing technologies. With the decreasing cost of DNA sequencing, genomic re-sequencing of diverse common bean accessions facilitates marker- assisted breeding that can be used to speed the creation of new common bean cultivars. Marker-assisted selection (MAS) is an important aspect of modern bean breeding that seeks to utilize genetic markers to select individuals with improved agronomic and consumer traits. For example, breeders in the African Bean Consortium seek to introgress known genetic loci conferring resistance to multiple diseases into bean genetic backgrounds with preferred seed and agronomic characteristics. However, the usefulness of markers is dependent on whether they are polymorphic in the specific parents of the breeding program. Often genetic markers identified in a specific plant population are not useful for marker assisted selection among a different set of bean parents, which necessitates identification of novel markers linked to the genes of interest that are polymorphic among breeding parents. One disease that greatly affects common bean production in humid tropical and sub-tropical growing regions is Angular Leaf Spot (ALS; caused by the foliar fungus Pseudocercospora griseola Sacc.). Marker assisted breeding is being used in multiple different bean breeding programs to improve the resistance of adapted cultivars to ALS. The ALS resistance locus, Phg-2, is an important resistance locus used to improve plant resistance to Angular Leaf Spot in South America and Pan Africa, however in the case of the African Bean Consortium breeding programs in East Africa, certain bean parents used for breeding were monomorphic for the original marker used to perform marker assisted selection of Phg-2. In order to facilitate marker assisted selection of Phg-2 in specific breeding parents used in the Uganda bean improvement program, an alternative, co-dominant, marker linked to the Phg-2 ALS resistance locus was developed (Chapter 1). A new marker, g796, was identified which is polymorphic among the breeding parents; its co-segregation was confirmed in a segregating F2 population derived from the cross between French bean variety Amy and the ALS resistance donor, Mexico 54. This work was conducted in collaboration with Stephen Kimno and Esther Arunga at Embu University, Kenya, as well as other members of the African Bean Consortium bean breeding programs in Tanzania, Uganda, and Ethiopia. The application of DNA sequencing to marker-assisted breeding and crop improvement is rapidly becoming common in the development of improved bean varieties. A nearly complete reference genome and transcriptome for Phaseolus vulgaris was released in 2014 and newly resequenced genomes of diverse bean accessions are being developed for the purpose of marker assisted breeding. In Chapter 2, whole-genome resequencing of 29 bean accessions, including accessions commonly used as breeding parents, was carried out in collaboration with the Ratz lab at the International Center for Tropical Agriculture (CIAT, Colombia). Genetic diversity analysis was performed in order to access the evolutionary relationships between the sequenced bean genomes. Data generated by this work was made available to the larger bean research community and will be used by breeders and geneticists to perform marker-assisted selection and genetic analysis in the future. Angular leaf spot (ALS) occurs throughout Eastern and Southern Africa (as well as other parts of the world) and can cause yield losses up to 80% in environments that favor the disease. ALS is caused by the fungal pathogen, Pseudocercospora griseola, a highly diverse pathogen with many different races that infect diverse types of bean hosts. Growing crop cultivars with genetic resistance to the disease is one of the most effective measures for farmers to reduce crop losses due to ALS. The landrace Mexico 54 is used as a donor for ALS resistance in East Africa and marker-assisted selection of the Phg-2 ALS resistance locus from Mexico 54 is underway in multiple breeding programs in order to increase the resistance of adapted bean germplasm in East Africa and Brazil. Previous allelism tests between different ALS resistance donors suggested additional resistance loci exist in Mexico 54 besides the Phg-2 locus and were named Phg-5 and Phg-6. The genomic locations of the proposed Phg-5 and Phg-6 resistance genes in Mexico 54 have never been investigated, however, the existence of multiple resistance loci in Mexico 54 is likely the cause of its high level of resistance to ALS on multiple continents. In Chapter 3, a biparental mapping population consisting of 167 F8 recombinant inbred lines (RIL) was derived from a cross between Kablanketi, a preferred bean market type in Tanzania, and Mexico 54 in order to map additional quantitative trait loci that confer resistance to ALS in Mexico 54. The identification of novel ALS resistance loci will aid breeders to develop resistant cultivars as well as provide a greater understanding of the genetic diversity that influences resistance to ALS.

Download or read book Genetic Diversity Estimation for POD and Seed Quality Traits in Bush Type French Bean Phaseolus Vulgaris L Accessions written by D. Ashwini and published by . This book was released on 2018 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Variation and Association Studies in French Bean Phaseolus Vulgaris L Under Mid Hill Conditions of North Western Himalaya written by Devi Jyoti and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Diversity Segregation and Recombination in Common Bean Phaseolus Vulgaris L written by Oscar Mario Paredes Cárcamo and published by . This book was released on 1993 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proccedings of the Second International Scientific Meeting Phaseolus Beans Advanced Biotechnology Research Network BARN written by and published by CIAT. This book was released on with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abstracts on Field Beans Phaseolus Vulgaris L written by and published by . This book was released on 1991 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: