Download or read book Selection of Common Bean Phaseolus Vulgaris L Genotypes with Enhanced Drought Tolerance and Biological Nitrogen Fixation written by Jorge Alberto Acosta-Gallegos and published by . This book was released on 1988 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Common Bean Phaseolus Vulgaris L Yield Root Growth and N Fixation Response to Moisture Deficits written by Maurice D. Yabba and published by . This book was released on 2001 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response to Selection for Seed Yield and Nitrogen Fixation in an Elite Population of Common Bean Phaseolus Vulgaris L written by Jorge Elizondo-Barron and published by . This book was released on 1998 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Common Bean Improvement in the Twenty First Century written by S.P. Singh and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: The common bean (Phaseolus vulgaris L. ) is the most important pulse crop in the world. It is an important source of calories, proteins, dietary fibers, minerals, and vitamins for millions of people in both developing and developed countries worldwide. It complements cereals and other carbohydrate-rich foods in providing near-perfect nutrition to people of all ages. Moreover, a regular intake ofbeans helps lower cholesterol and cancer risks. Despite the fact that per capita consumption of common bean in some developed countries (e. g. , the U. S. A. ) has been increasing over the last several years, in general, the average global per capita consumption is declining because production is unable to keep up with the population growth. Moreover, increasing demand for pesticide-free food products, concern for natural resources conservation, and the need to reduce production costs offer daunting challenges to the twenty-first century policy makers, bean growers, and researchers alike. High yielding, high quality bean cultivars that require less water, fertilizers, pesticides, and manual labor combined with integrated management of abiotic and biotic stresses will have to be developed. Eminent bean researchers were invited to contemplate these issues, prepare a state-of-the-art account on most relevant topics, and offer their insight into research directions into the twenty-first century. Four excellent books have been published covering various aspects ofthe common bean since 1980. These books are: I) Bean Production Problems nd in the Tropics (l SI ed. 1980, 2 ed. 1989), H. F. Schwartz & M. A.

Download or read book Improvement of Yields of Common Beans Phaseolus Vulgaris L by Increased Nitrogen Fixation in Soils with Low Phosphorus Levels written by Irene Christiansen and published by . This book was released on 2001 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physiological Response to Drought Stress of Common Bean Phaseolus Vulgaris L Genotypes Differing in Drought Resistance written by Setegn Gebeyehu and published by Cuvillier Verlag. This book was released on 2006 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Common Bean Phaseolus Vulgaris L Root Phenotypes as a Tool for Developing Bean Genotypes with Superior Adaptation to Low Phosphorus Availability and Drought written by Virginia Kapachika Chisale and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Common bean is one of the most important legume crops especially in developing countries like eastern and southern Africa. Though bean is important in these areas its production is affected by a number of abiotic stresses including low soil fertility and drought. However, in these countries the population growth rate is increasing therefore, there is need to find mechanisms to increase crop productivity. Previous studies on bean roots have shown that bean genotypes vary for root phenotypes, which enhance drought and low phosphorus tolerance. These traits include basal root whorl number, basal root number, adventitious roots, root etiolation, root growth angle and root hairs. These traits can be regulated by genes, by the environment or both. In Africa farmers have different preferences for different bean genotypes depending on color, seed size, resistant to stresses and maturity period. Hence in developing new bean cultivars, farmer's preferences should be taken into consideration. In this study we evaluated phenotypic variation for a number of root traits and their relation to phosphorus uptake. The genotypes which we evaluated in this study were first screened in another study, which evaluated bean genotypes for superior adaptation to low soil fertility and drought, this study was the Bean Improvement for Low Soil Fertility in Africa (BILFA) program. These genotypes were found to have varying performance under low soil fertility and drought. From that BILFA study we selected eleven genotypes to be used in our study and four non-BILFA genotypes making a total of fifteen genotypes. These non-BILFA lines are commercial cultivars in Malawi. Our study included both greenhouse and field experiments. The fifteen genotypes were phenotyped for root traits. Our data from the phenotyping study showed that the existing cultivars had less basal root whorl number compared to the BILFA lines. In an attempt to improve the adaptation of these cultivars to low phosphorus availability, we attempted to increase their basal root whorl number by hybridization between these commercial varieties, which have one whorl with four whorled genotypes.

Download or read book Low Soil Fertility and Drought Stress Tolerance in Selected Andean Common Bean Phaseolus Vulgaris L Genotypes written by Eninka John Mndolwa and published by . This book was released on 2017 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: Common bean (Phaseolus vulgaris L.) is an important food legume cultivated in all major continental areas. Low soil fertility in particular low nitrogen (N), low phosphorus (P) and drought stresses are the major limitations to dry bean production in developing countries. Identifying genotypes representing new and diverse sources for low soil fertility and drought stress in Andean diversity panel (ADP) will contribute toward breeding for bean productivity in developing countries. A panel of 268 genotypes and varieties were evaluated from 2013 -- 2015 in Tanzania and Washington (WA). Phenotypic traits measured included days to flowering maturity, harvest maturity, canopy height (cm), plant biomass rating (1-9), root and shoot dry weight (g), number of nodules per plant, pod harvest index (PHI), seed weight (g 100 seeds-1), pods plant-1, seeds pod-1, and seed yield (kg ha-1). In Tanzania, yield was significantly influenced by yield component traits and partitioning traits. Yield obtained from bean with bush growth habit was significantly higher than vine under low soil fertility. In WA, results indicate that genotypes with vine growth habit had some level of tolerance to drought stress compared to bush type. Canopy height, biomass, flowering maturity and harvest maturity significantly influenced yield. Significant environment (E), genotype (G) and genotype x environment (GE) effects on seed yield were detected using GGE-Biplot analysis. Four ADP genotypes in Tanzania and four genotypes in WA were identified as stable across environments thus will be useful in breeding for general adaptation. GWAS analysis identified QTL for most of the traits measured under low soil fertility and drought stress. These QTL were distributed across all eleven chromosomes and provide preliminary information for traits affected by stress. Results for glasshouse experiment for Phosphorus use efficiency (PUE) indicate variation among all traits measured which included shoot biomass (g), shoot P (mg kg-1), root P (mg kg-1), seed P (mg kg-1) and seed yield. The trait values increased with increasing P levels. It was observed that genotypes with higher PUE under limiting P may be useful for improving bean productivity under such condition.

Download or read book Nitrogen Fixation and Drought Tolerance in Interspecific Phaseolus Hybrids written by Consuelo E. Estevez and published by INIAP Archivo Historico. This book was released on 1991 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Drought phenotyping in crops From theory to practice written by Philippe Monneveux and published by Frontiers E-books. This book was released on 2014-02-12 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: This topic is a unique attempt to simultaneously tackle theoretical and practical aspects in drought phenotyping, through both crop-specific and cross-cutting approaches. It is designed for – and will be of use to – practitioners and postgraduate students in plant science, who are grappling with the challenging task of evaluating germplasm performance under different water regimes. In Part I, different methodologies are presented for accurately characterising environmental conditions, implementing trials, and capturing and analysing the information this generates, regardless of the crop. Part II presents the state-of-art in research on adaptation to drought, and recommends specific protocols to measure different traits in major food crops (focusing on particular cereals, legumes and clonal crops). The topic is part of the CGIAR Generation Challenge Programme’s efforts to disseminate crop research information, tools and protocols, for improving characterisation of environments and phenotyping conditions. The goal is to enhance expertise in testing locations, and to stimulate the development and use of traits related to drought tolerance, as well as innovative protocols for crop characterisation and breeding.

Download or read book Genetics and Breeding for Nitrogen Fixation in Common Bean Phaseolus Vulgaris written by W. Q Ribeiro Junior and published by . This book was released on 1996 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: An initial selection for nitrogen fixation was made from 77 genotypes of common bean (Phaseolus vulgaris) adapted to Goias state, Brazil, comparing them with control genotypes with know symbiotic capacity. After several selections, the outstanding genotypes for nitrogen fixation produced 1314 kg/ha (almost three times the Brazilian average), but the treatment with mineral nitrogen was superior, suggesting the necessity of a breeding project for nitrogen fixation. Two genotypes were selected based on their capacity to fix nitrogen, productivity without nitrogen fertilizers, adaptability to Goias state and other agronomic characteristics. The two parents were evaluated in semi-controlled conditions for symbiotic capacity. The genotype WBR2255 showed better symbiotic efficiency, nodule dry weight, weight per nodule, later nodule senescence and greater tolerance to mineral nitrogen in the latter stages of growth than A295.

Download or read book Recurrent Selection for Nodule Mass and Identification of Tolerance to Nitrate induced Inhibition of Dinitrogen Fixaton in Common Bean Phaseolus Vulgaris L written by Mario Felix Mera and published by . This book was released on 1993 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Symbiotic Nitrogen Fixation written by P. Graham and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past three decades there has been a large amount of research on biological nitrogen fixation, in part stimulated by increasing world prices of nitrogen-containing fertilizers and environmental concerns. In the last several years, research on plant--microbe interactions, and symbiotic and asymbiotic nitrogen fixation has become truly interdisciplinary in nature, stimulated to some degree by the use of modern genetic techniques. These methodologies have allowed us to make detailed analyses of plant and bacterial genes involved in symbiotic processes and to follow the growth and persistence of the root-nodule bacteria and free-living nitrogen-fixing bacteria in soils. Through the efforts of a large number of researchers we now have a better understanding of the ecology of rhizobia, environmental parameters affecting the infection and nodulation process, the nature of specificity, the biochemistry of host plants and microsymbionts, and chemical signalling between symbiotic partners. This volume gives a summary of current research efforts and knowledge in the field of biological nitrogen fixation. Since the research field is diverse in nature, this book presents a collection of papers in the major research area of physiology and metabolism, genetics, evolution, taxonomy, ecology, and international programs.

Download or read book Handbook of Photosynthesis written by Mohammad Pessarakli and published by CRC Press. This book was released on 2024-07-31 with total page 827 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fourth Edition of the Handbook of Photosynthesis offers a unique and comprehensive collection of topics in the field of photosynthesis, serving as an invaluable resource in this field. With contributions from 95 scientists and experts from over 20 countries, this volume has been divided into 13 parts, each serving independently to facilitate the understanding of the material. FEATURES Presents comprehensive information on photosynthesis under normal and environmental stress conditions Covers artificial photosynthesis and its future-related issues Contains 25 new chapters and 18 extensively revised and expanded chapters Includes three new sections: Influence of Nanoparticles on Photosynthesis; Protection of Photosynthesis System and Stress Alleviation Strategies by Photosynthates Manipulations and Photosynthesis Efficiency in Plants under Multiple Abiotic and Biotic Stressors; and Artificial Photosynthesis and Its Future Contains numerous tables, figures, illustrations, and case studies to facilitate the comprehension of the material as well as thousands of index words A primary resource in its field, Handbook of Photosynthesis, Fourth Edition, provides a comprehensive resource for researchers, academics, and for university courses, with the information as a valuable source to plan, implement, and evaluate strategies for dealing with photosynthesis issues.

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 The Role of Plant rhizobial Genotypes in Biological Nitrogen Fixation in Common Bean Phaseolus Vulgaris L written by D. P. Padua and published by . This book was released on 1997 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Germplasm Development and Breeding for Improved Biological Nitrogen Fixation of Faba Bean in Morocco written by Mohammed Sadiki and published by . This book was released on 1990 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: