Mixed Culture of Maize (Zea Mays L.) for Enhancing Productivity PDF Download
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Author: Mina Nath Paudel
Publisher: LAP Lambert Academic Publishing
ISBN: 9783844302967
Category :
Languages : en
Pages : 100
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Book Description
Maize is one of the most important staple crops in the world. To feed ever burgeoning population, there is a need to increase production and productivity of the crop. Adoption of hybrid maize technology led to the substantial increase in total maize production. However, small farmers, who are constrained with the relatively high inputs requirement of hybrids. This book describes about the method how reduction of cost and enhancing of maize production could be done by mixing hybrids and open pollinated varieties (OPVs) in a sustainable manner thereby providing options to the resource poor farmers. Likewise, it describes about the agronomic manipulation of increased maize production techniques through mixed culture of different combination of maize seed between hybrids and OPVs. Also, it explains how substitution of hybrid seeds with OPVs up to 50% proves economically sound alternative practice of maize production system for resource poor growers in general and developing country in particular. Likewise, it provides information on economic benefit of mixed cultivar culture of maize for increasing production as well.
Author: Mina Nath Paudel
Publisher: LAP Lambert Academic Publishing
ISBN: 9783844302967
Category :
Languages : en
Pages : 100
Get Book Here
Book Description
Maize is one of the most important staple crops in the world. To feed ever burgeoning population, there is a need to increase production and productivity of the crop. Adoption of hybrid maize technology led to the substantial increase in total maize production. However, small farmers, who are constrained with the relatively high inputs requirement of hybrids. This book describes about the method how reduction of cost and enhancing of maize production could be done by mixing hybrids and open pollinated varieties (OPVs) in a sustainable manner thereby providing options to the resource poor farmers. Likewise, it describes about the agronomic manipulation of increased maize production techniques through mixed culture of different combination of maize seed between hybrids and OPVs. Also, it explains how substitution of hybrid seeds with OPVs up to 50% proves economically sound alternative practice of maize production system for resource poor growers in general and developing country in particular. Likewise, it provides information on economic benefit of mixed cultivar culture of maize for increasing production as well.
Author: Yammella reddi ramu
Publisher:
ISBN:
Category :
Languages : en
Pages : 252
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Book Description
Author: A.N. Seema
Publisher:
ISBN:
Category :
Languages : en
Pages : 95
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Book Description
Author: Frank Lloyd McFarland
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Maize is one of the most economically important crops in the US and globally for food, feed, and biofuel production. Efficient production of regenerable, embryogenic tissue cultures of maize is necessary for both basic biological research and applied biotechnological approaches to maize genetic improvement. Efficient generation of regenerable cultures in maize is highly genotype-dependent and, historically, researchers in academia and industry have relied extensively upon a restrictively small number of genotypes amenable to conventional tissue culture. To identify the genetic basis for genotypic differences in culture response, a mapping-based approach was utilized. The tissue culture response trait from the regenerable maize inbred A188 was backcrossed into the recalcitrant inbred B73. An A188 genomic introgression spanning 3 Mb on chromosome 3 was strongly associated with regenerable tissue culture response. Three candidate genes were selected in the region based on their expression in A188 immature embryos and functional annotations of genes in the region. A screen of each candidate gene expressed under constitutive promoters identified a single candidate, Wox2a, which was found to induce somatic embryogenesis and embryogenic callus in B73.A complementary approach to mapping the A188 culture response trait was undertaken to map the genotype-dependent response of diverse maize lines to Wuschel2/Baby boom (Wus/Bbm)-mediated genetic transformation. Though Wus/Bbm-mediated transformation reduced recalcitrance of many lines through co-transformation with developmental regulators, strong trends of genotype-dependence were still observed. Ten diverse maize lines were screened to identify lines highly amenable to Wus/Bbm-mediated transformation. Transgenic plants/events were recovered from eight of the ten lines. One line, Gaspé Flint, generated transgenic events efficiently and at a wide range of embryo maturities. A Gaspé Flint x B73 introgression library was screened through Wus/Bbm-mediated transformation and Gaspe̹ Flint introgressions associated with transformability were identified on chromosomes 1, 4, and 7. The scale of the transformation experiments necessitated isolation of thousands of immature embryo explants, for which a high-throughput method of embryo isolation (SIMPLE extraction) was developed. Methods for SIMPLE extraction, as well as optimized methods for Wus/Bbm-mediated and Wox2a-mediated maize transformation were developed to enable easy adoption these developing technologies.
Author: Morakinyo Abiodun Bamidele Fakorede
Publisher:
ISBN:
Category :
Languages : en
Pages : 210
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Book Description
Author: Sergio O. Serna-Saldivar
Publisher: Elsevier
ISBN: 0128118865
Category : Technology & Engineering
Languages : en
Pages : 692
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Book Description
Corn: Chemistry and Technology, Third Edition, provides a broad perspective on corn from expert agronomists, food scientists and geneticists. This encyclopedic storehouse of comprehensive information on all aspects of the world’s largest crop (in metric tons) includes extensive coverage of recent development in genetic modification for the generation of new hybrids and genotypes. New chapters highlight the importance of corn as a raw material for the production of fuel bioethanol and the emerging topic of phytochemicals or nutraceutical compounds associated to different types of corns and their effect on human health, especially in the prevention of chronic diseases and cancer. Written by international experts on corn, and edited by a highly respected academics, this new edition will remain the industry standard on the topic. Presents new chapters that deal with specialty corns, the production of first generation bioethanol, and the important relationship of corn phytochemicals or nutraceuticals with human health Provides contributions from a new editor and a number of new contributors who bring a fresh take on this highly successful volume Includes vastly increased content relating to recent developments in genetic modification for the generation of new hybrids and genotypes Contains encyclopedic coverage of grain chemistry and nutritional quality of this extensively farmed product Covers the production and handling of corn, with both food and non-food applications
Author: Sauer
Publisher: Cambridge University Press
ISBN: 9780521088480
Category : History
Languages : en
Pages : 324
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Book Description
Carl O. Sauer uses contemporary sources to place the history of the early Spanish Main in a fresh context.
Author: M. Bänzinger
Publisher: CIMMYT
ISBN: 9706480463
Category :
Languages : en
Pages : 69
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Book Description
Introduction - why breed for drought and low N tolerance?; Conceptual framework - breeding; Conventional approaches to improving the drought and low N tolerance of maize; Conventional approaches challenged; The challenge of breeding for drought and low N tolerance; Maize under drought and low N stress; Conceptual framework - physiology; Water and the maize plant; Nitrogen and the maize plant; Maize under drought and low N stress - consequences for breeding; Stress management; Drought; Low N stress; Statistical designs and layout of experiments; Increasing the number of replicates; Improved statistical designs; Field layout; Border effects from alleys; Secondary traits; Why use secondary traits?; How do we decide on the value of secondary traits in a drought or low N breeding program?; Secondary traits that help to identify drought tolerance; Secondary traits that help to identify low N tolerance: Selection indices - Combining information on secondary traits with grain yield; Combining information from various experiments; Breeding strategies; Choice of germplasm; Breeding schemes; Biotechnology: potential and constraints for improving drought and low N tolerance; The role of the farmer in selection; What is farmer participatory research and why is it important?; What is new about farmer participatory research?; Participatory methodologies.
Author: T. Satyanarayana
Publisher: I. K. International Pvt Ltd
ISBN: 8188237434
Category : Microbial diversity
Languages : en
Pages : 1159
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Book Description
Microbial Diversity: Current Perspectives and Potential Applications is woven around the recent global perceptions of microbial diversity in its all embracing facets. Diversity perspectives are discussed in the context of ecosystem dynamics, taking into consideration environments that are rather unique to microorganisms. Considerable thrust is placed on the role that microorganisms play in sustainable production systems. Microbe-plant interaction arena is highlighted through the discussion of mycorrhizal partners, on which depends not only the plant community structure but also abatement of abiotic and biotic stresses. Other mutualist, rhizobia gets its due coverage whereas plant disease component carries examples from both, fungal and viral disease point of view. Considerable emphasis is placed on a discussion of the environmental issues such as the approaches that will lead to newer bioremediation technologies. No discussion of microbial diversity is complete without their implications in animal and human health. Discussed in this context are L-arginases in cancer therapy as also bioactives from cyanobacteria. Genomics and pathogenicity of two groups of viruses, viz., blue tongue and flaviviruses is highlighted whereas keratinophilic fungal forms are discussed in the context of dermatophytic infections. This volume also carries a fair number of articles on commercial microbiology.
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251085196
Category : Technology & Engineering
Languages : en
Pages : 124
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Book Description
FAO’s best-selling 2011 publication, Save and Grow, proposed a new paradigm of agriculture, one that is both highly productive and environmentally sustainable. This new book looks at the application of “Save and Grow” practices and technologies to production of the world’s key food security crops – maize, rice and wheat. With examples drawn from developing countries worldwide, it shows how eco-friendly farming systems are helping smallholder producers to boost cereal yields, improve their incomes and livelihoods, conserve natural resources, reduce negative impacts on the environment, and build resilience to climate change. The book will be a valuable reference for policymakers and development practitioners guiding the transition to sustainable food and agriculture.
