The Distribution, Growth, Reproduction And Population Genetics Of A Mangrove Species, Rhizophora Stylosa Griff, Near Its Southern Limits In New South Wales, Australia, 2016 Australian Catholic University
The Distribution, Growth, Reproduction And Population Genetics Of A Mangrove Species, Rhizophora Stylosa Griff, Near Its Southern Limits In New South Wales, Australia, Nicholas Charles Wilson
Rhizophora stylosa is a common and widespread mangrove species on tropical coasts in the Indo-West Pacific and very common and widespread in northern Australia. This aim of this study was to investigate R. stylosa's distribution, growth, reproduction and population genetics over the last 300 kms of its range at its southern limits in northern New South Wales on the Australian east coast. Rhizophora stylosa was found to be more widespread between and within estuaries in northern New South Wales than previously recorded, with evident spread over recent decades. A new southern limit of South West Rocks Creek was determined ...
Dawn Or Doom: The Risks And Rewards Of Emerging Technologies, 2016 Purdue University
Dawn Or Doom: The Risks And Rewards Of Emerging Technologies, Diana Hancock, Steve Tally, Gerry Mccartney, Michele Arthur
Purdue P-12 Networking Summit & Poster Session
Dawn or Doom is a free and open to the public conference at Purdue where we focus on benefits and risks surrounding some of the technologies that are both the most disruptive to current practices and being adopted the fastest. A collection of Purdue faculty experts and some outside speakers showcase their many perspectives related to this technology explosion, explore conditions that will foster innovation and investment into the next generation, and address the big-picture issues where both optimism and pessimism are warranted.
Identification Of Candidate Genes Underlying An Iron Efficiency Quantitative Trait Locus In Soybean, 2016 Iowa State University
Identification Of Candidate Genes Underlying An Iron Efficiency Quantitative Trait Locus In Soybean, Gregory A. Peiffer, Keith E. King, Andrew J. Severin, Gregory D. May, Silvia R. Cianzio, Shun Fu Lin, Nicholas C. Lauter, Randy C. Shoemaker
Prevalent on calcareous soils in the United States and abroad, iron deficiency is among the most common and severe nutritional stresses in plants. In soybean (Glycine max) commercial plantings, the identification and use of iron-efficient genotypes has proven to be the best form of managing this soil-related plant stress. Previous studies conducted in soybean identified a significant iron efficiency quantitative trait locus (QTL) explaining more than 70% of the phenotypic variation for the trait. In this research, we identified candidate genes underlying this QTL through molecular breeding, mapping, and transcriptome sequencing. Introgression mapping was performed using two related near-isogenic lines ...
Bt Corn And Insect Resistance: An Economic Assessment Of Refuges, 2016 University of Minnesota - Twin Cities
Bt Corn And Insect Resistance: An Economic Assessment Of Refuges, Terrance M. Hurley, Bruce A. Babcock, Richard L. Hellmich
Genetically engineered crops offer farmers a new option for controlling pests. The high efficacy of these pesticidal crops, combined with the potential for widespread adoption, has raised concerns that pest resistance may prematurely diminish their value. In response to these concerns, the Environmental Protection Agency requires resistance management plans. Current resistance management plans rely on a highdose refuge strategy. This analysis extends the current framework for evaluating high-dose refuge strategies to include a measure of agricultural productivity and conventional pesticide use. The economic tradeoff relative to agricultural productivity, conventional pesticide use, and pest resistance is assessed when Bt corn is ...
A Brief History Of Corn: Looking Back To Move Forward, 2016 University of Nebraska-Lincoln
A Brief History Of Corn: Looking Back To Move Forward, Jon Derek Pruitt
Doctoral Documents from Doctor of Plant Health Program
Maize was domesticated from teosinte in Mexico some 7,000 to 10,000 years ago and quickly spread through the Americas. It has become one of the most important crops at a local and global level. Two types, Northern Flint corn and Southern Dent corns provided the basis of the genetic background of modern maize hybrids. The development of hybrids, first double-cross and later single-cross hybrids, along with a transition to high input farming provided huge yield increases, which have continued to improve with improving technology.
Increase in maize production also caused a rise in Western corn Rootworm (Diabrotica virgifera ...
Is A Mitochondrial Plasmid Really A Virus?, 2016 University of Nebraska - Lincoln
Is A Mitochondrial Plasmid Really A Virus?, Mackenzie Strehle
UCARE Research Products
In addition to containing a large and complex mitochondrial genome, the mitochondria of several species of plants have been shown to contain an independent, self-replicating DNA molecule in the form of a plasmid. Plants in the Brassica genus contain a linear plasmid that is approximately 11.6 kilobases in length. The plasmid is characterized by the presence of terminal inverted repeats and covalently bonded proteins at its termini (Handa 2008). The plasmid also contains six ORFs that encode DNA and RNA polymerases and a number of unknown proteins (Figure 1). Currently, both the function of this plasmid and the mechanisms ...
Bio-Piracy: Creating Proprietary Rights In Plant Genetic Resources, 2016 University of Nairobi
Bio-Piracy: Creating Proprietary Rights In Plant Genetic Resources, James O. Odek
Journal of Intellectual Property Law
No abstract provided.
The Use Of Native Prairie Grasses To Degrade Atrazine And Metolachlor In Soil, 2016 ABC Laboratories
The Use Of Native Prairie Grasses To Degrade Atrazine And Metolachlor In Soil, Shaohan Zhao, Ellen Arthur, Joel Coats
Joel R. Coats
The ability of native prairie grasses, big bluestem (Andropogon gerardii Vitman), Yellow indiangrass (Sorghastrum nutans L.), and switchgrass (Panicum virgatum L.), to degrade atrazine and metolachlor was evaluated in two soils denoted as Alpha and Bravo soils. Vegetation significantly decreased the amount of remaining atrazine in Alpha soil when the concentration of atrazine before vegetation was 93 μg g-1, but had no effect on the degradation of atrazine when it was 4.9 μg g-1. The significant effect of the plants on atrazine degradation in Alpha soil occurred at 57 days after the transplanting of vegetation, but not at 28 ...
Ginkgo And Welwitschia Mitogenomes Reveal Extreme Contrasts In Gymnosperm Mitochondrial Evolution, 2016 University of Nebraska - Lincoln
Ginkgo And Welwitschia Mitogenomes Reveal Extreme Contrasts In Gymnosperm Mitochondrial Evolution, Wenhu Guo, Felix Grewe, Weishu Fan, Gregory J. Young, Volker Knoop, Jeffrey D. Palmer, Jeffrey P. Mower
Faculty Publications from the Center for Plant Science Innovation
Mitochondrial genomes (mitogenomes) of flowering plants are well known for their extreme diversity in size, structure, gene content, and rates of sequence evolution and recombination. In contrast, little is known about mitogenomic diversity and evolution within gymnosperms. Only a single complete genome sequence is available, from the cycad Cycas taitungensis, while limited information is available for the one draft sequence, from Norway spruce (Picea abies). To examine mitogenomic evolution in gymnosperms, we generated complete genome sequences for the ginkgo tree (Ginkgo biloba) and a gnetophyte (Welwitschia mirabilis). There is great disparity in size, sequence conservation, levels of shared DNA, and ...
The Regulatory Status Of Genome-Edited Crops, 2016 Iowa State University
The Regulatory Status Of Genome-Edited Crops, Jeffrey D. Wolt, Kan Wang, Bing Yang
Genome editing with engineered nucleases (GEEN) represents a highly specific and efficient tool for crop improvement with the potential to rapidly generate useful novel phenotypes/traits. Genome editing techniques initiate specifically targeted double strand breaks facilitating DNA-repair pathways that lead to base additions or deletions by non-homologous end joining as well as targeted gene replacements or transgene insertions involving homology-directed repair mechanisms. Many of these techniques and the ancillary processes they employ generate phenotypic variation that is indistinguishable from that obtained through natural means or conventional mutagenesis; and therefore, they do not readily fit current definitions of genetically engineered or ...
Isolation And Characteristics Of New Grape Microsatellites, 2016 Southern Cross University
Isolation And Characteristics Of New Grape Microsatellites, Kirsten Scott, L Lee, T Dow, Robert Henry
No abstract provided.
Sugar-Enhanced And Synergistic Sweet Corn Cultivar Evaluation For Northern Indiana, 2015, 2016 Purdue University - Main Campus
Sugar-Enhanced And Synergistic Sweet Corn Cultivar Evaluation For Northern Indiana, 2015, Elizabeth Maynard, Israel S. Calsoyas
Purdue Fruit and Vegetable Research Reports
This paper reports on seven bicolor and two yellow sugar-enhanced or synergistic sweet corn entries that were evaluated at the Pinney-Purdue Agricultural Center in Wanatah, Indiana.
Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2015, 2016 Purdue University - Main Campus
Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2015, Elizabeth Maynard, Israel S. Calsoyas
Purdue Fruit and Vegetable Research Reports
This paper reports on thirteen bicolor, two yellow, and three white supersweet sweet corn entries that were evaluated at the Pinney-Purdue Agricultural Center in Wanatah, Indiana.
Mini- And Heirloom Sweet Pepper Variety Performance In High Tunnels, 2015, 2016 Purdue University - Main Campus
Mini- And Heirloom Sweet Pepper Variety Performance In High Tunnels, 2015, Elizabeth Maynard, Israel S. Calsoyas
Purdue Fruit and Vegetable Research Reports
Trials on mini sweet peppers and other specialty sweet peppers in the Midwest have not recently been reported. We undertook this project to compare yield and fruit characteristics of hybrid and heirloom peppers grown in high tunnels using organic and conventional production methods.
Midwest Vegetable Trial Report For 2015, 2016 Purdue University - Main Campus
Midwest Vegetable Trial Report For 2015, Elizabeth Maynard
Purdue Fruit and Vegetable Research Reports
This is a compilation of 19 research trial reports from six land-grant universities in the midwestern United States. Crops include bok choy, cantaloupe, cucumber, pepper, pumpkin, sweet corn, squash, tomato, and watermelon. Several crops were evaluated in high tunnels or hoophouses. Most trials evaluated different cultivars or varieties, including one investigating cantaloupe variety influence on cucumber beetle presence and incidence of bacterial wilt. Four reports addressed specific growing practices: the use of poly-coated urea to supply nitrogen to sweet corn, biochar use in a high tunnel bag culture system, use of cereal rye cover crop in butternut squash, and pollinizer ...
Optimization Of Doubled Haploid Production In Burley Tobacco (Nicotiana Tabacum L.), 2016 University of Kentucky
Optimization Of Doubled Haploid Production In Burley Tobacco (Nicotiana Tabacum L.), Ezequiel De Oliveira
Theses and Dissertations--Plant and Soil Sciences
Doubled haploidy (DH) is a plant breeding technique that is often utilized by plant breeders to minimize the time required to reach homozygosity in breeding lines. The first objective of this study was to compare two methods of generating DH lines in tobacco (Nicotiana tabacum L.). Inbred burley tobacco varieties TN 90LC and GR 149LC were used to produce both androgenic derived doubled haploids (ADDH) and maternally derived doubled haploids (MDDH). The relative agronomic performance of TN 90LC and GR 149 LC ADDH and MDDH lines was compared when used either as pure-line cultivars or when used for the production ...
Variations In The Invertebrate Communities Of Wild Cape Cod Cranberry Bogs, 2016 University of Massachusetts - Amherst
Variations In The Invertebrate Communities Of Wild Cape Cod Cranberry Bogs, Barbara Wagner
Masters Theses May 2014 - current
As a species domesticated only in the last century, agricultural cranberry plants (Vaccinium macrocarpon) remain little removed from their wild relatives. Thus, it is a potential model species for studies of the earliest stages of domestication; however, there is little available quantitative information on its wild population biology and ecology. As such information is vital to studies of the ecological changes occurring during domestication, the purpose of this study was to consolidate the relevant knowledge available and conduct a preliminary search for patterns in the invertebrate communities of wild bogs. The alpha diversity was found to be greater than the ...
Transcriptome Profiling Of Soybean (Glycine Max) Roots Challenged With Pathogenic And Non-Pathogenic Isolates Of Fusarium Oxysporum, Alessandra Lanubile, Usha K. Muppirala, Andrew J. Severin, Adriano Marocco, Gary P. Munkvold
Plant Pathology and Microbiology Publications
Fusarium oxysporum is one of the most common fungal pathogens causing soybean root rot and seedling blight in U.S.A. In a recent study, significant variation in aggressiveness was observed among isolates of F. oxysporum collected from roots in Iowa, ranging from highly pathogenic to weakly or non-pathogenic isolates.
We used RNA-seq analysis to investigate the molecular aspects of the interactions of a partially resistant soybean genotype with non-pathogenic/pathogenic isolates of F. oxysporum at 72 and 96 h post inoculation (hpi). Markedly different gene expression profiles were observed in response to the two isolates. A peak ...
Evaluation Of Genetic Gain For Dynamic Leaf Traits In Maize Using Field Spectroscopy, 2015 University of Nebraska-Lincoln
Evaluation Of Genetic Gain For Dynamic Leaf Traits In Maize Using Field Spectroscopy, Jonathan Luetchens
Theses, Dissertations, and Student Research in Agronomy and Horticulture
Rapid introduction of cheap and precise genotyping technology has created a void between genotypes and phenotypes in maize breeding. While detailed genetic information is easily accessible, the data are lacking robust phenotypes to be used in mapping studies like genome-wide association. As a result, high-throughput phenotyping tools are necessary to rigorously characterize specific traits. In this study, agronomic traits and an active spectrometer system were used to monitor 36 era hybrids – popular commercial maize hybrids grown from 1936 to 2012 – to discover how various traits have changed over time. In conjunction with increased grain yield of 76 kg/ha per ...
Molecular Breeding Strategies For Improvement Of Complex Traits In Soybean, 2015 University of Tennessee - Knoxville
Molecular Breeding Strategies For Improvement Of Complex Traits In Soybean, Christopher Joseph Smallwood
Soybean [Glycine max (L.) Merrill] is the leading oilseed crop grown in the world. Yield, fatty acids, protein, and oil are commercially important soybean traits; thus evaluation of breeding strategies for improvement of these traits is merited. To accomplish this, a comparison of molecular and phenotypic breeding strategies from progeny row selections was performed. From this it was determined that molecular strategies consistently outperformed phenotypic selections (PS) in the progeny row stage for soybean yield, fatty acids, protein, and oil. For yield, Epistacy was the preferred selection method. For fatty acids, protein, and oil, the genomic selection (GS) strategies were ...