Download or read book Characterization of Ecuadorian and Argentine Bean rhizobia and Their Specificity with Phaseolus Vulgaris L of Different Gene Pools written by Gustavo Ramon Bernal and published by . This book was released on 1993 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Ecuadorian and Argentine Bean Rhizobia and Their Specificity with Phaseolus Vulgaris L of Different Gene Pools written by Gustavo Ramon Bernal Gomez and published by INIAP Archivo Historico. This book was released on with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Diversity and Symbiotic Specificity of the Rhizobia Associated with Phaseolus Vulgaris L in Its Ecuadorian and Mexican Centers of Origin written by Gustavo Ramon Bernal Gomez and published by INIAP Archivo Historico. This book was released on 2001 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EFECT OF SEED SIZE ON SEED YIELD AND ON NITROGEN FIXATION RELATED TRAITS IN BUSH BEAN CROSSES COMBINING ANDEAN AND MIDDLE AMERICAN GENE POOLS written by JOSE VASQUEZ and published by INIAP Archivo Historico. This book was released on with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of seed Size on Seed yield and on Nitrogen Fixation related Traits in Bush Bean Crosses combining Andean and Middle American Gene Pools written by and published by INIAP Archivo Historico. This book was released on with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen fixing Leguminous Symbioses written by Michael J. Dilworth and published by Springer Science & Business Media. This book was released on 2008-01-18 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nodules produced on legume roots by root-nodule bacteria provide the major nitrogenous input into natural and agricultural systems worldwide. This book provides an in-depth and up-to-the-minute analysis of what is known about this symbiosis, its origins, the process of nodule formation and development, and the biochemistry and genetics of nodular nitrogen fixation. It also reviews the physiology of the root-nodule bacteria themselves, their ecology in both natural and agricultural systems, and how we can introduce new legumes along with the bacteria they require. This book is recommended for scientists working with root nodule bacteria or host legumes, agronomists, forestry scientists, and soil scientists.
Download or read book Canadian Journal of Microbiology written by and published by . This book was released on 2001 with total page 476 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 Graduate School Commencement written by University of Minnesota. Graduate School and published by . This book was released on 1993 with total page 86 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 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 Assessing the Genetic Diversity of Common Bean Phaseolus Vulgaris L Landraces from Brazil written by Marília Lobo Burle and published by . This book was released on 2008 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Structure and Evolution of the Determinacy Gene fin During Domestication in Common Bean Phaseolus Vulgaris L written by Myounghai Kwak and published by . This book was released on 2007 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Common Bean Genome written by Marcelino Pérez de la Vega and published by Springer. This book was released on 2017-12-20 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides insights into the genetics and the latest advances in genomics research on the common bean, offering a timely overview of topics that are pertinent for future developments in legume genomics. The common bean (Phaseolus vulgaris L.) is the most important grain legume crop for food consumption worldwide, as well as a model for legume research, and the availability of the genome sequence has completely changed the paradigm of the ongoing research on the species. Key topics covered include the numerous genetic and genomic resources, available tools, the identified genes and quantitative trait locus (QTL) identified, and there is a particular emphasis on domestication. It is a valuable resource for students and researchers interested in the genetics and genomics of the common bean and legumes in general.
Download or read book Diversity and Functional Analysis of the Common Bean Phaseolus Vulgaris L Determinacy Gene PvTFL1y written by Shelby Repinski and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Common bean (Phaseolus vulgaris) plants exhibit two distinct stem termination growth habit types: indeterminate and determinate. Plants with indeterminate growth habit have a terminal meristem that remains vegetative throughout the production of lateral vegetative and reproductive growth. Contrarily, in determinate plants, the terminal shoot meristem switches from a vegetative to reproductive state, resulting in a terminal inflorescence. While only indeterminate growth is observed in wild-type common bean populations, both growth habits can be observed in domesticated varieties. Determinate growth habit has been artificially selected, in combination with photoperiod insensitivity, to obtain varieties with a shortened and synchronized flowering period and earlier maturation, allowing mechanized harvest. In the early 1990s, researchers in Arabidopsis thaliana identified a gene, Terminal Flowering 1 (TFL1), as a locus controlling inflorescence meristem development. Three homologs of TFL1 were identified in common bean: Phaseolus vulgaris Terminal Flowering 1 x, y, and z (PvTFL1x, PvTFL1y, and PvTFL1z). PvTFL1y was the only candidate gene to contain natural genetic variation potentially correlated with determinacy and also co-segregate with the phenotypic locus for determinate growth habit (fin) on chromosome 01. In chapter one, our goal was to verify the role of PvTFL1y in determining growth habit. Using quantitative PCR, we found that two distinct mutant PvTFL1y haplotypes associated with determinacy caused mRNA abundance to decrease 20-133 fold; consistent with the recessive nature of fin. Furthermore, we were able to rescue mutant determinate (tfl1-1) Arabidopsis plants by transformation with the wild-type PvTFL1y gene. This work validates that the candidate gene, PvTFL1y, is the functional homolog of TFL1 and is the molecular locus underlying the fin phenotypic locus. In chapter two, we use the pervasive synteny among legumes species in a comparative genomics approach to identify growth habit homologs of PvTFL1y in 16 different Phaseolus species; two of which include accessions with a determinate growth habit: P. coccineus and P. lunatus. Neighbor-joining analyses of amplified homologs verified previous genetic relationships in the Phaseolus species. Additionally, a 2bp insertion/deletion (indel) in the P. lunatus homolog, PlTFL1, was found to segregate with growth habit. We created a Cleaved Amplified Polymorphic sequence (CAPs) marker for this indel that can be utilized in future co-segregation studies. No mutation could yet be found that could be causal to determinacy in P. coccineus. Several unique mutant alleles for determinate growth habit have been identified at the PvTFL1y locus and it is of interest whether they confer differences in flowering and plant architecture. In chapter three, we analyzed dissimilarities between four mutant PvTFL1y haplotypes by transferring them, using marker-assisted backcrossing, into a common genetic background. Most notable, one backcross population containing the most prevalent mutant haplotype, a 4.1kb retrotransposon, was found to begin and finish flowering significantly earlier than the recurrent parent and all other backcross populations. It is likely that determinate growth habit in association with earliness may have caused this haplotype to become the most agronomically desirable during or after domestication. More generations of backcrossing followed by recurrent parent background genetic selection will elucidate if identified trait associations are caused by pleiotropy or linkage. Common bean was domesticated independently in Mesoamerica and in the Andes. Within the Mesoamerican center, the domestication area has been narrowed to the Lerma-Santiago Basin of Mexico, while the Andean center still remains quite large. During Andean domestication, determinate growth habit was likely selected for as it led to a more compact growth habit and earliness. By analyzing shared haplotypes between wild and domesticated common bean, around the domestication locus PvTFL1y, it may be possible to narrow the Andean center of domestication. In chapter four we analyzed an 800 kb region around PvTFL1y, in 96 wild and domesticated common bean accessions. Preliminary findings have identified three unique haplotypes for growth habit, indicating that selection for determinacy, in the Andean gene pool, may have occurred several times since domestication. Two determinacy haplotypes appear most closely related to wild samples from Peru while the other clustered with Argentinian accessions. Complications in the analysis arose from high levels of admixture amongst wild accessions and inconsistent sequencing coverage across accessions sampled. Future studies should include important samples in replicate and reduce pooling to achieve maximum coverage across all accessions.
Download or read book The Genetic Relationship Between the Mesoamerican and Andean Gene Pools of the Common Bean Phaseolus Vulgaris L written by Luke E. Mumba and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Towards an Integrated Genetic Linkage Map of Common Bean Phaseolus Vulgaris L written by Rubens Onofre Nodari and published by . This book was released on 1992 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
