Infeccao Competitividade E Eficiencia Da Fixacao Biologica Do Nitrogenio Em Soja Glycine Max L Merrill Inoculada Com As Estirpes De Bradyrhizobium Semia 566 Semia 586 Semia 5079 E Semia 5080

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Infeccao, competitividade e eficiencia da fixacao biologica do nitrogenio em soja (Glycine max [L.] Merrill) inoculada com as estirpes de Bradyrhizobium SEMIA 566, SEMIA 586, SEMIA 5079 e SEMIA 5080

Author : C. Y. M. Nishi
Publisher :
ISBN 13 :
Total Pages : 102 pages
Book Rating : 4.:/5 (79 download)

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Book Synopsis Infeccao, competitividade e eficiencia da fixacao biologica do nitrogenio em soja (Glycine max [L.] Merrill) inoculada com as estirpes de Bradyrhizobium SEMIA 566, SEMIA 586, SEMIA 5079 e SEMIA 5080 by : C. Y. M. Nishi

Download or read book Infeccao, competitividade e eficiencia da fixacao biologica do nitrogenio em soja (Glycine max [L.] Merrill) inoculada com as estirpes de Bradyrhizobium SEMIA 566, SEMIA 586, SEMIA 5079 e SEMIA 5080 written by C. Y. M. Nishi and published by . This book was released on 1995 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foram estudados alguns parametros relacionados a infeccao, eficiencia, competitividade e caracteristicas geneticas das estirpes de B.elkanii SEMIA 566 e de B.japonicum SEMIA 586 e suas respectivas variantes SEMIA 5079 e SEMIA 5080. Inicialmente, em condicoes axenicas, observaram-se os fenotipos Tsr (Thick and short root, raizes curtas e grossas), determinado pela deformacao da raiz principal, Had (Hair deformation, deformacao do pelo radicular), Hai (Hair induction, inducao de pelos radiculares), determinado pelo numero de pelos radiculares, Hac (Hair curling, encurvamento dos pelos radiculares), encontrando-se diferencas, no fenotipo Hai, entre as parentais e as variantes. As estirpes foram testadas, tambem, em casa de vegetacao, em vasos com areia e vermiculita esterilizadas, quanto a sua eficiencia de fixacao do N2 e capacidade competitiva, comparandp-se as parentais com as variantes, em inoculos simples ou inoculos em mistura com a estirpe de B.elkanii SEMIA 5019 em diferentes proporcoes. As estirpes variantes apresentaram maior numero de nodulos e maior acumulo de N nos tecidos do que as parentais, embora as diferencas nao tenham sido estatisticamente significativas. No campo, em um solo com populacao de Bradyrhizobium estabelecida (2,21x10x10x10x10x10 celulas/g de solo), todas as estirpes testadas foram capazes de se estabelecer na rizosfera. A inoculacao proporcionou incremento na produtividade e nos teores de Nacumulados nos graos, em relacao aos controles sem inoculacao recebendo ou nao N mineral. ...

Eficiência da fixação biológica do N2 e capacidade competitiva das estirpes SEMIA 566, SEMIA 586, SEMIA 5079 E SEMIA 5080 inoculadas em soja (Glycine max(L.) Merrill).

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Author : C. Y. M. Nishi
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (78 download)

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Book Synopsis Eficiência da fixação biológica do N2 e capacidade competitiva das estirpes SEMIA 566, SEMIA 586, SEMIA 5079 E SEMIA 5080 inoculadas em soja (Glycine max(L.) Merrill). by : C. Y. M. Nishi

Download or read book Eficiência da fixação biológica do N2 e capacidade competitiva das estirpes SEMIA 566, SEMIA 586, SEMIA 5079 E SEMIA 5080 inoculadas em soja (Glycine max(L.) Merrill). written by C. Y. M. Nishi and published by . This book was released on 1993 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Eficiência da fixação biológica de nitrogênio pela inoculação de estirpes de Bradyhizobium em soja, no Estado do Mato grosso do Sul

Author : F. M. Mercante
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (78 download)

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Book Synopsis Eficiência da fixação biológica de nitrogênio pela inoculação de estirpes de Bradyhizobium em soja, no Estado do Mato grosso do Sul by : F. M. Mercante

Download or read book Eficiência da fixação biológica de nitrogênio pela inoculação de estirpes de Bradyhizobium em soja, no Estado do Mato grosso do Sul written by F. M. Mercante and published by . This book was released on with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: O presente estudo teve como objetivo avaliar a eficiência das estirpes de Bradyrhizobium recomendadas pela pesquisa para a produção comercial e inoculantes no Brasil, quando inoculadas em soja cultivada sob sistemas de plantio direto ou convencional (aração e gradagem). Os experimentos foram conduzidos nas safras agricolas 2000/2001, 2001/2002 e 2002/2003, nos Municípios de Dourados e Pont porã, MS. Na safra 2000/2001, o ensaio foi conduzido sob sistema convencional, enquanto nas outras safras os experimentos os experimentos foram conduzidos sob sistema plantio direto, após o cultivo de aveia preta Avena strigosa) ou trigo (Triticum aestivum L.) Na safra de 2000/2001 avaliaram-se os seguintes tratamentos: controle não inoculado; controle sem inoculação e com aplicação de 200 Kg ha- de N-uréia, sendo 50% no plantio e 50% no florecimento; estirpes SEMIA 587, SEMIA 5019, SEMIA 5079 e SEMIA 5080, inoculadas individualmente, e as combinações das estirpes SEMIA 587 + SEMIA 5019 E SEMIA 5079 + SEMIA 5080. Nas safras 2001/2002 e 2002/2003 foram acrescentados os tratamentos com 30 kg- de N-uréia, aplicados no plantio, e120 kg ha- deN-uréia, em quatro aplicações (plantio, início de florecimento, florecimento pleno e enchimento de grãos). Na safra de 2001/2002, sobsistema de plantio direto, a inoculaçào pela estirpe SEMIA 5019 promoveu um incremento de cerca de 22% no rendimento de gràos na cultura de soja em relação ao tratamento-controle não inoculado. Em ambos os ensaios não foram detectados incrementos no rendimento de grãos pela aplicaçào de adubo nitrogenado, independente da dose utilizada a da época de aplicaçào. De modo geral, os controles sem inculação não apresentaram diferenças significativa da maioria dos tratamentos com plantas inoculadas, para os rendimetos de grãos de soja, nas tres safras avaliadas. Esta falta de resposta à inoculaçào pode ser atribuída à população estabelecida de Bradyrhizobium nas áreas experimentais, que mostraram uma elevada eficiência simbiótica.

Influencia da hidrogenase na fixacao e na distribuicao do nitrogenio em soja (Glycine max L.) inoculada com estirpes eficientes de Bradyrhizobium

Download Influencia da hidrogenase na fixacao e na distribuicao do nitrogenio em soja (Glycine max L.) inoculada com estirpes eficientes de Bradyrhizobium PDF Online Free

Author : V. A. F. Santos
Publisher :
ISBN 13 :
Total Pages : 137 pages
Book Rating : 4.:/5 (79 download)

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Book Synopsis Influencia da hidrogenase na fixacao e na distribuicao do nitrogenio em soja (Glycine max L.) inoculada com estirpes eficientes de Bradyrhizobium by : V. A. F. Santos

Download or read book Influencia da hidrogenase na fixacao e na distribuicao do nitrogenio em soja (Glycine max L.) inoculada com estirpes eficientes de Bradyrhizobium written by V. A. F. Santos and published by . This book was released on 1994 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: A producao de hidrogenio durante a reducao enzimatica do N2 para a amonia e um dos fatores que mais influenciam a eficiencia da fixacao biologica de nitrogenio. Em soja, a eficiencia relativa da fixacao de nitrogenio tem sido relacionada a abundancia relativa de ureidos no exsudato xilematico e a particao do nitrogenio para as sementes. Tendo em vista a importancia economica e ecologica da utilizacao da FBN em soja, tem-se buscado estirpes que proporcionem um aumento na producao de graos da cultura. Alem disso, esforcos tem sido feitos visando conhecer os mecanismos e fatores que afetam o sistema simbiotico. A influencia da hidrogenase na fixacao de N2, no transporte e na particao do nitrogenio foi avaliada em plantas noduladas de soja. No primeiro experimentoavaliou-se o efeito da inoculacao da soja com as estirpes CB 1809 (Hup') de Bradyrhizobium japonicum e 29W (Hup) de B. elkanii na FBN e na particao do nitrogenio na parte aerea. A FBN foi estimada pelo metodo de diluicao isotopica de 15N. Cerca de 95% do nitrogenio total da parte aerea foi proveniente da fixacao de N2. A estirpe Hup+ fixou mais N total do que a estirpe Hup-. A atividade dos nodulos formados pela estirpe Hup- foi drasticamente reduzida durante o periodo de formacao de vagens, enquanto, a estirpe Hup+ manteve elevados niveis de fixacao de N2 durante todo o periodo reprodutivo da soja. A maior atividade dos nodulos formados pela estirpe Hup+ refletiu em um aumento na proporcao de N-ureidos no exsudato xilematico das plantas durante o periodo ...

Efeito de Bacillus spp. e seus metabolitos na competitividade e na nodulacao da soja (Glycine max [L.] Merril) por Bradyrhizobium spp

Author : F.F. de ARAUJO
Publisher :
ISBN 13 :
Total Pages : 111 pages
Book Rating : 4.:/5 (79 download)

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Book Synopsis Efeito de Bacillus spp. e seus metabolitos na competitividade e na nodulacao da soja (Glycine max [L.] Merril) por Bradyrhizobium spp by : F.F. de ARAUJO

Download or read book Efeito de Bacillus spp. e seus metabolitos na competitividade e na nodulacao da soja (Glycine max [L.] Merril) por Bradyrhizobium spp written by F.F. de ARAUJO and published by . This book was released on 1995 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foi estudado o potencial antifungico de Bacillus, para o tratamento de sementes de soja, atraves do isolamento de bacterias pertecentes a este genero em amostras de solo, sob cultivo, em tres locais do Estado do Parana. Nas amostras desses locais foram encontradas populacoes reduzidas de Bacillus, com poucos isolados apresentando potencial inibitorio a fungos fitopatogenicos. A incidencia de cinco fungos em sementes de soja foi inibida atraves do tratamento com metabolitos produzidos por estirpes de Bacillus spp. Com o objetivo de estudar o efeito de Bacillus sobre a nodulacao da soja inoculada com Bradyrhizobium foram conduzidos seis experimentos de campo e casa de vegetacao. Duas estirpes de Bradyrhizobium (SEMIA 5019 e 5080) foram submetidas a testes de resistencia aos metabolitos de Bacillus subtilis (AP-3). Apos este procedimento duas estirpes de Bacillus (AP-3 e A3-5) juntamente as duas estirpes de Bradyrhizobium (5019 e 5080) bem como suas variantes (5019-R e 5080-R) resistentes aos metabolitos de Bacillus foram utilizadas nos experimentos. Os resultados encontrados demonstraram que os metabolitos de Bacillus estimularam a emissao de pelos radiculares e a nodulacao pelo Bradyrhizobium nos primeiros estadios de desenvolvimento da soja em casa de vegetacao. No campo esses metabolitos co-inoculados com Bradyrhizobium proporcionaram aumentos de nodulacao e produtividade na soja, estatisticamente significativos, em relacao a testemunha. Foram obtidos ganhos, tambem, na ocupacao dos nodulos pelas estirpes ...

Nitrogen Fixation in Agriculture, Forestry, Ecology, and the Environment

Author : Dietrich Werner
Publisher : Springer Science & Business Media
ISBN 13 : 9781402035425
Total Pages : 380 pages
Book Rating : 4.0/5 (354 download)

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Book Synopsis Nitrogen Fixation in Agriculture, Forestry, Ecology, and the Environment by : Dietrich Werner

Download or read book Nitrogen Fixation in Agriculture, Forestry, Ecology, and the Environment written by Dietrich Werner and published by Springer Science & Business Media. This book was released on 2005-10-24 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainability has a major part to play in the global challenge of continued development of regions, countries, and continents all around the World and biological nitrogen fixation has a key role in this process. This volume begins with chapters specifically addressing crops of major global importance, such as soybeans, rice, and sugar cane. It continues with a second important focus, agroforestry, and describes the use and promise of both legume trees with their rhizobial symbionts and other nitrogen-fixing trees with their actinorhizal colonization. An over-arching theme of all chapters is the interaction of the plants and trees with microbes and this theme allows other aspects of soil microbiology, such as interactions with arbuscular mycorrhizal fungi and the impact of soil-stress factors on biological nitrogen fixation, to be addressed. Furthermore, a link to basic science occurs through the inclusion of chapters describing the biogeochemically important nitrogen cycle and its key relationships among nitrogen fixation, nitrification, and denitrification. The volume then provides an up-to-date view of the production of microbial inocula, especially those for legume crops.

Symbiotic Nitrogen Fixation

Author : P. Graham
Publisher : Springer Science & Business Media
ISBN 13 : 9401110883
Total Pages : 206 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Symbiotic Nitrogen Fixation by : P. Graham

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.

Nitrogen Fixation in Crop Production

Author : David W. Emerich
Publisher : ASA-CSSA-SSSA
ISBN 13 : 9780891181705
Total Pages : 446 pages
Book Rating : 4.1/5 (817 download)

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Book Synopsis Nitrogen Fixation in Crop Production by : David W. Emerich

Download or read book Nitrogen Fixation in Crop Production written by David W. Emerich and published by ASA-CSSA-SSSA. This book was released on 2009 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the science, application, and politics of the use of nitrogen-fixing crop plants across the globe in various environments. Nitrogen fixation can help provide a growing population with a nutritious, environmentally friendly, sustainable food supply. From new "omics" approaches to the role of nitrogen fixation in mitigating greenhouse gas emissions, from farming strategies in nonindustrialized nations to nitrogen fixation in the global economy, scientists will find the key issues and expanding research areas, and how they contribute to the next wave of advancements related to agriculture and the environment

The Rhizobiaceae

Author : Herman P. Spaink
Publisher : Springer Science & Business Media
ISBN 13 : 9401150605
Total Pages : 576 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis The Rhizobiaceae by : Herman P. Spaink

Download or read book The Rhizobiaceae written by Herman P. Spaink and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Rhizobiaceae, Molecular Biology of Model Plant-Associated Bacteria. This book gives a comprehensive overview on our present molecular biological knowledge about the Rhizobiaceae, which currently can be called the best-studied family of soil bacteria. For many centuries they have attracted the attention of scientists because of their capacity to associate with plants and as a consequence also to specifically modify plant development. Some of these associations are beneficial for the plant, as is the case for the Rhizobiaceae subgroups collectively called rhizobia, which are able to fix nitrogen in a symbiosis with the plant hosts. This symbiosis results in the fonnation of root or stem nodules, as illustrated on the front cover. In contrast, several Rhizobiaceae subgroups can negatively affect plant development and evoke plant diseases. Examples are Agrobacterium tumefaciens andA. rhizogenes which induce the formation of crown galls or hairy roots on the stems of their host plants, respectively (bottom panels on front cover). In addition to the obvious importance of studies on the Rhizobiaceae for agronomy, this research field has resulted in the discovery of many fundamental scientific principles of general interest, which are highlighted in this book. To mention three examples: (i) the discovery of DNA transfer of A.

Symbiotic Nitrogen Fixation

Author : Rachid Serraj
Publisher : CRC Press
ISBN 13 :
Total Pages : 392 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Symbiotic Nitrogen Fixation by : Rachid Serraj

Download or read book Symbiotic Nitrogen Fixation written by Rachid Serraj and published by CRC Press. This book was released on 2004 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Workshop on Biological Nitrogen Fixation for Increased Crop Productivity, Enhanced Human Health and Sustained Soil Fertility was held in June 2002 at ENSAM-INRA, Montpellier, France. The main goal of the workshop was to define research strategies for a Challenge Program initiative on Biological Nitrogen Fixation, and develop a pre-proposal based on the concept note submitted and approved by the CGIAR iSC. More than 35 participants from various scientific disciplines, research institutions and from four different continents (Africa, Asia, Americas and Europe) attended the workshop. This book, based on the proceedings of the workshop, takes a holistic approach to harnessing legume BNF technologies, starting from a socioeconomic perspective, and progressing to agronomic and genetic options, and bringing together innovative aspects and participatory research strategies.

Nitrogen in Agricultural Systems

Author : James Stuart Schepers
Publisher : ASA-CSSA-SSSA
ISBN 13 : 9780891181644
Total Pages : 994 pages
Book Rating : 4.1/5 (816 download)

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Book Synopsis Nitrogen in Agricultural Systems by : James Stuart Schepers

Download or read book Nitrogen in Agricultural Systems written by James Stuart Schepers and published by ASA-CSSA-SSSA. This book was released on 2008 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: Review of the principles and management implications related to nitrogen in the soil-plant-water system.

Nitrogen Fixation in Tropical Cropping Systems

Author : K. E. Giller
Publisher : CABI
ISBN 13 : 1845933044
Total Pages : 443 pages
Book Rating : 4.8/5 (459 download)

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Book Synopsis Nitrogen Fixation in Tropical Cropping Systems by : K. E. Giller

Download or read book Nitrogen Fixation in Tropical Cropping Systems written by K. E. Giller and published by CABI. This book was released on 2001 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen fixation by leguminous plants is especially important when farmers are trying to minimise fertilizer use for cost or environmental reasons. This second edition of the highly successful book, first published in 1991, contains thoroughly updated and revised material on the theory and practice of nitrogen fixation in tropical cropping systems.

Methods for Evaluating Biological Nitrogen Fixation

Author : F. J. Bergersen
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 722 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Methods for Evaluating Biological Nitrogen Fixation by : F. J. Bergersen

Download or read book Methods for Evaluating Biological Nitrogen Fixation written by F. J. Bergersen and published by John Wiley & Sons. This book was released on 1980 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cultivation of diazotrophic microorganisms. Measurement of nitrogen fixation by direct means. Measurement of nitrogen fixation by indirect means. Methods for legumes in glasshouses and controlled environment cabinets. Non-legumes nodule systems. Methods for studying nitrogenase. Methods for studying enzymes involved in metabolism related to nitrogenase. Preparation and experimental use of leghaemoglobin. Methods for identifying strains of diazotrophs. Genetic studies with diazotrophs. Experiments with crop and pasture legumes: principles and practice. Production and quality control of legume inoculants. Forage grasses and grain crops. Nitrogen fixation in natural plant communities and soils. Sytems involving blue-green algae (cyanobacteria).

Symbiosis of Plants and Microbes

Author : D. Werner
Publisher : Springer
ISBN 13 :
Total Pages : 408 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Symbiosis of Plants and Microbes by : D. Werner

Download or read book Symbiosis of Plants and Microbes written by D. Werner and published by Springer. This book was released on 1992-11-30 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Symbiotic associations are of great importance in agriculture and forestry, especially in plant nutrition and plant cultivation. This book provides an up-to-date and lucid introduction to the subject. The emphasis is on describing the variety of symbiotic relationships and their agricultural and environmental applications.

The Soils of Argentina

Author : Gerardo Rubio
Publisher : Springer
ISBN 13 : 3319768530
Total Pages : 268 pages
Book Rating : 4.3/5 (197 download)

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Book Synopsis The Soils of Argentina by : Gerardo Rubio

Download or read book The Soils of Argentina written by Gerardo Rubio and published by Springer. This book was released on 2018-05-30 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first comprehensive book on Argentinian pedology. It discusses the main soil types of Argentina, their geographical distribution, classification, functions, agricultural use, ecological aspects, and the threats to which they have been subjected during centuries of intensive and extensive management. The description of the soils is accompanied by a complete set of data, pictures and maps, including benchmark profiles and an overview of the country's agricultural production. It also deals with future scenarios of the relationships between soil science and other disciplines and the main challenges that soil science will face in the future. Further, the book explores aspects of the main soil forming factors, such as climate, vegetation, geology and geomorphology, making use of new, unpublished data and elaborations, and presents a history of pedological research in Argentina.

Grain Legumes

Author : Antonio M. De Ron
Publisher : Springer
ISBN 13 : 1493927973
Total Pages : 449 pages
Book Rating : 4.4/5 (939 download)

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Book Synopsis Grain Legumes by : Antonio M. De Ron

Download or read book Grain Legumes written by Antonio M. De Ron and published by Springer. This book was released on 2015-08-27 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to grain legumes and include eight chapters devoted to the breeding of specific grain legume crops and five general chapters dealing with important topics which are common to most of the species in focus. Soybean is not included in the book as it is commonly considered an oil crop more than a grain legume and is included in the Oil Crops Volume of the Handbook of Plant Breeding.Legume species belong to the Fabaceae family and are characterized by their fruit, usually called pod. Several species of this family were domesticated by humans, such as soybean, common bean, faba bean, pea, chickpea, lentil, peanut, or cowpea. Some of these species are of great relevance as human and animal food. Food legumes are consumed either by their immature pod or their dry seeds, which have a high protein content. Globally, grain legumes are the most relevant source of plant protein, especially in many countries of Africa and Latin America, but there are some constraints in their production, such as a poor adaptation, pest and diseases and unstable yield. Current research trends in Legumes are focused on new methodologies involving genetic and omic studies, as well as new approaches to the genetic improvement of these species, including the relationships with their symbiotic rhizobia.

Historical Geography of Crop Plants

Author : Jonathan D. Sauer
Publisher : Routledge
ISBN 13 : 1351440624
Total Pages : 324 pages
Book Rating : 4.3/5 (514 download)

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Book Synopsis Historical Geography of Crop Plants by : Jonathan D. Sauer

Download or read book Historical Geography of Crop Plants written by Jonathan D. Sauer and published by Routledge. This book was released on 2017-11-22 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historical Geography of Crop Plants is devoted to a variety of staple and food crops, as well as fodder, fiber, timber, rubber, and other crops. The origins and histories of many of these crops have been clarified only recently by new research. The book has been arranged alphabetically by family and higher taxa for easy reference. Within families, species and cultivars are listed chronologically and geographically. The taxonomy and geography of probable wild progenitors have been outlined, and archeological evidence (when available) and historical evidence on region and domestication are traced. The subsequent evolution and spread of many domesticated species are examined, and the reasons behind the diversity in crop histories are explored. Historical Geography of Crop Plants will be a useful reference for botanists, economic botanists, ethnobiologists, agronomists, geographers, and others interested in the subject.