Physiological Mechanisms Affecting The Dormancy Of Switchgrass Panicum Virgatum L
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Physiological Mechanisms Affecting The Dormancy Of Switchgrass Panicum Virgatum L
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Author : Gene Stradford Heidemann
language : en
Publisher:
Release Date : 1964
Physiological Mechanisms Affecting The Dormancy Of Switchgrass Panicum Virgatum L written by Gene Stradford Heidemann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with categories.
Dormancy Mechanisms Of Switchgrass Panicum Virgatum L Seeds
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Author : Brietta D. Murphy
language : en
Publisher:
Release Date : 2008
Dormancy Mechanisms Of Switchgrass Panicum Virgatum L Seeds written by Brietta D. Murphy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Abscisic acid categories.
The Hunt For Green Every April
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Author :
language : en
Publisher:
Release Date : 2014
The Hunt For Green Every April written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
This grant funded work was undertaken to develop fundamental biological knowledge of the factors affecting the complex plant trait "fitness" in switchgrass (Panicum virgatum L.), a plant being developed as a biomass crop. Using a diverse range of latitudinally-adapted switchgrass plants, genomic, molecular and physiological studies were performed to track a number of different aspects of plant genetics and physiology over the course of the growing season. Work was performed on both genetically unrelated and genetically related plants. Plants were established in the field from seedlings raised in a greenhouse, or from clones present in other field nurseries. Field grown plants were used as the source of all tissues. The three objectives of this proposal were:(1) Transcript Profiling, Metabolomics, and C and N Partitioning and Recycling in Crowns and Rhizomes of Switchgrass over two growing seasons; (2) Gene Profiling During Regreening and Dormancy of Bulked Segregants; (3) Extent of Linkage Disequilibrium in Populations for Adaptation and Fitness Traits Being Developed for Central and Northern USA, that Show Significant Heterosis. Objective 1 results: Plants were labeled using 13CO2 (a stable isotope) using an acrylic chamber constructed specifically for this purpose. Plants became labeled with 13C and label decayed in aerial tissues over the course of the growing season. Varying amounts of 13C were recovered in the rhizomes. These data are being analyzed. Plants were also labeled with 15N-urea. Plants absorbed significant amounts of label that was remobilized to the growing shoots. N-dynamics would suggest that a portion of the 15N absorbed into the crowns and rhizomes is sequestered below ground. Variable amounts of 15N were translocated from the shoots to the roots over the course of the growing season. Polar metabolites extracted from a diverse array of rhizomes were analyzed using GCMS. Data indicated that there was a significant shift in metabolite pools over the course of the growing season, and differences in the levels of specific metabolites could be linked to the progression of dormancy. Several metabolites that accumulate in dormant rhizomes were identified. Some of these metabolites could be potentially linked to winter-survival of switchgrass. Extensive high-throughput sequencing was conducted on crown and rhizome samples collected from field grown plants. Initial work was performed on a Roche 454 system. All later work was performed on an Illumina sequencing-by-synthesis system. Some of these datasets have been published as peer-reviewed papers, other data are currently being analyzed and being readied for publication. Objective 2 results: Genetically related but phenotypically divergent plants from an octaploid switchgrass population were grown in a replicated field nursery. Rhizomes were harvested at four different times over the course of the growing season from plants with high winter survival and those with lower winter survival. RNA-Seq was performed on harvested materials. Initial analysis suggests that plants with lowered winter survival experience a greater level of cellular stress in dormant tissues. This aspect of plant function is being probed in greater depth. Objective 3 results: A total of 592 individual clones with three clonal replications in a randomized complete block design from each of five populations used in Objective 1 studies were rated for heading date in 2012 and 2014, green-up day of year in 2013, anthesis date in 2012, and yield in 2012, they were also subjected to NIR spectroscopy to derive cell wall composition estimates based on prior NIR calibrations. Plants were genotyped via a genotyping by sequencing (GBS) approach from reduced representation libraries constructed with adaptors that identified each individual. Libraries generated with the restriction enzyme PstI and called SNPs using Samtools after alignment t ...
Transcriptome Changes In Switchgrass Panicum Virgatum L Seeds When Hydrogen Peroxide Is Applied To Alleviate Dormancy
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Author : Martha Isabel Montanez Diaz
language : en
Publisher:
Release Date : 2011
Transcriptome Changes In Switchgrass Panicum Virgatum L Seeds When Hydrogen Peroxide Is Applied To Alleviate Dormancy written by Martha Isabel Montanez Diaz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Hydrogen peroxide categories.
Sabkha Ecosystems
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Author : M. Ajmal Khan
language : en
Publisher: Springer
Release Date : 2016-06-22
Sabkha Ecosystems written by M. Ajmal Khan and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-06-22 with Science categories.
This book is a part of the Sabkha Ecosystems series which was designed to provide information on sabkha ecosystems of different regions and to add to the collective knowledge available about saline ecosystems. The comprehensive coverage assists the reader gaining a thorough understanding of sabkha geology, hydrology, geomorphology, zoology, botany, ecology and ecosystem functioning, as well as sabkha conservation, utilization and development. Volume I focused on The Arabian Peninsula and Adjacent Countries, volume II was based on describing saline ecosystems of West and Central Asia , volume III referred to Africa and Southern Europe, while volume IV focused on Cash Crop Halophyte and Biodiversity Conservation. The present volume V focuses on Americans.
Switchgrass Panicum Virgatum L Intraspecific Variation And Temperature Tolerance Classification Using In Vitro Seed Germination Assay
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Author : Ramdeo Seepaul
language : en
Publisher:
Release Date : 2010
Switchgrass Panicum Virgatum L Intraspecific Variation And Temperature Tolerance Classification Using In Vitro Seed Germination Assay written by Ramdeo Seepaul and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Germination categories.
An experiment was conducted to determine temperature effects on switchgrass seed germination, a native species with feedstock potential for the biofuel industry. Stratified seeds were germinated at constant temperatures, 15 to 45°C with 5°C interval. Maximum seed germination (MSG) and germination rate (GR), estimated by fitting sigmoid function to germination-time series data, varied among genotypes. Quadratic and bilinear models best described the MSG and GR responses to temperature, respectively. The mean cardinal temperatures, minimum, optimum and maximum, were 8.1, 26.6 and 45.1°C for MSG and 11.1, 33.1 and 46.0°C for GR, respectively, varied among genotypes. Genotypes were classified for temperature tolerance based on cumulative temperature response index: 'Summer' and 'Expresso' were identified as the most heat- and cold-tolerant genotypes, respectively. The functional algorithms and identified tolerant genotypes may be used to improve switchgrass models for field applications and breeding programs to develop new genotypes with enhanced tolerance for niche environments.
Switchgrass
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Author : Andrea Monti
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-03-09
Switchgrass written by Andrea Monti and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-03-09 with Technology & Engineering categories.
The demand for renewable energies from biomass is growing steadily as policies are enacted to encourage such development and as industry increasingly sees an opportunity to develop bio-energy enterprises. Recent policy changes in the EU, USA and other countries are spurring interest in the cultivation of energy crops such as switchgrass. Switchgrass has gained and early lead in the race to find a biomass feedstock for energy production (and for the almost requisite need for bio-based products from such feedstocks). Switchgrass: A Valuable Biomass Crop for Energy provides a comprehensive guide to the biology, physiology, breeding, culture and conversion of switchgrass as well as highlighting various environmental, economic and social benefits. Considering this potential energy source, Switchgrass: A Valuable Biomass Crop for Energy brings together chapters from a range of experts in the field, including a foreword from Kenneth P. Vogel, to collect and present the environmental benefits and characteristics of this a crop with the potential to mitigate the risks of global warming by replacing fossil fuels. Including clear figures and tables to support discussions, Switchgrass: A Valuable Biomass Crop for Energy provides a solid reference for anyone with interest or investment in the development of bioenergy; researchers, policy makers and stakeholders will find this a key resource.
Proceedings Of The Second Eastern Native Grass Symposium
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Author :
language : en
Publisher: DIANE Publishing
Release Date :
Proceedings Of The Second Eastern Native Grass Symposium written by and has been published by DIANE Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Crop Physiology Abstracts
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Author :
language : en
Publisher:
Release Date : 1984
Crop Physiology Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Plant physiology categories.
Ecology Physiology And Management Of Cogongrass Imperata Cylindrica
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Author : Donn Graham Shilling
language : en
Publisher:
Release Date : 1997
Ecology Physiology And Management Of Cogongrass Imperata Cylindrica written by Donn Graham Shilling and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Cogon grass categories.