Arkansas Cotton Variety Test 2018, 2019 University of Arkansas, Fayetteville
Arkansas Cotton Variety Test 2018, Fred Bourland, A. Beach, C. Kennedy, L. Martin, B. Robertson
The primary goal of the Arkansas Cotton Variety Test is to provide unbiased data regarding the agronomic performance of cotton varieties and advanced breeding lines in the major cotton-growing areas of Arkansas. This information helps seed companies establish marketing strategies and assists producers in choosing varieties to plant. These annual evaluations will then facilitate the inclusion of new, improved genetic material in Arkansas cotton production. Adaptation of varieties is determined by evaluating the lines at five University of Arkansas System Division of Agriculture research sites (Manila, Keiser, Judd Hill, Marianna, and Rohwer). Entries in the 2018 Arkansas Cotton Variety Test ...
Stability Analysis Of Kernel Quality Traits In Exotic-Derived Doubled Haploid Maize Lines, 2019 Iowa State University
Stability Analysis Of Kernel Quality Traits In Exotic-Derived Doubled Haploid Maize Lines, Adam Vanous, Candice Gardner, Michael Blanco, Adam Martin-Schwarze, Jinyu Wang, Xianran Li, Alexander E. Lipka, Sherry Flint-Garcia, Martin Bohn, Jode Edwards, Thomas Lubberstedt
Variation in kernel composition across maize (Zea mays L.) germplasm is affected by a combination of the plant’s genotype, the environment in which it is grown, and the interaction between these two elements. Adapting exotic germplasm to the US Corn Belt is highly dependent on the plant’s genotype, the environment where it is grown, and the interaction between these components. Phenotypic plasticity is ill-defined when specific exotic germplasm is moved over large latitudinal distances and for the adapted variants being created. Reduced plasticity (or stability) is desired for the adapted variants, as it allows for a more rapid ...
Medicago Sativa Has Reduced Biomass And Nodulation When Grown With Soil Microbiomes Conditioned To High Phosphorus Inputs, Laura M. Kaminsky, Grant L. Thompson, Ryan V. Trexler, Terrence H. Bell, Jenny Kao-Kniffin
Global Responses Of Resistant And Susceptible Sorghum (Sorghum Bicolor) To Sugarcane Aphid (Melanaphis Sacchari), 2019 University of Nebraska-Lincoln
Global Responses Of Resistant And Susceptible Sorghum (Sorghum Bicolor) To Sugarcane Aphid (Melanaphis Sacchari), Hannah M. Tetreault, Sajjan Grover, Erin Scully, Tammy Gries, Nathan A. Palmer, Gautam Sarath, Joe Louis, Scott E. Sattler
Faculty Publications: Department of Entomology
The sugarcane aphid (Melanaphis sacchari) has emerged as a significant pest for sorghum. The use of sugarcane aphid-resistant sorghum germplasm with integrated pest management strategies appears to be an excellent solution to this problem. In this study, a resistant line (RTx2783) and a susceptible line (A/BCK60) were used to characterize the differences in plant responses to the sugarcane aphid through a series of experiments, which examined global sorghum gene expression, aphid feeding behavior and inheritance of aphid resistance. The global transcriptomic responses to sugarcane aphids in resistant and susceptible plants were identified using RNA-seq and compared to the expression ...
Refernment: An R Package For Annotating Rna Editing In Plastid Genomes, 2019 Utah State University
Refernment: An R Package For Annotating Rna Editing In Plastid Genomes, Tanner A. Robison, Paul G. Wolf
Biology Faculty Publications
PREMISE OF THE STUDY: In the absence of cDNA, the annotation of RNA editing in plastomes must be done manually, representing a significant time cost to those studying the organellar genomes of ferns and hornworts.
METHODS AND RESULTS: We developed an R package to automatically annotate apparent nonsense mutations in plastid genomes. The software successfully annotates such sites and results in no false positives for data with no sequencing or assembly errors.
CONCLUSIONS: Compared to manual annotation, ReFernment offers greater speed and accuracy for annotating RNA editing sites. This software should be especially useful for researchers generating large numbers of ...
Limiting Nutrients For Bean Production On Contrasting Soil Types Of Lake Victoria Crescent Of Uganda, 2019 Makerere University
Limiting Nutrients For Bean Production On Contrasting Soil Types Of Lake Victoria Crescent Of Uganda, P. Kyomuhendo, M. M. Tenywa, O. Semalulu, A. W. Lenssen, R. S. Yost, R. E. Mazur, S. Kyebogola, L. H. Goettsch
Andrew W. Lenssen
Common bean (Phaseolus vulgaris L.) is one of the most important grain legumes in East Africa, but its yield has remained below the genetic potential. Declining soil fertility is among the primary constraints to bean production in most East African bean producing regions. Often existing recommendations are generic and inept to guide farm level decision making on nutrient replenishment. A greenhouse nutrient omission study was conducted to determine the limiting nutrients in three soils of Masaka District, commonly cropped to beans: “Liddugavu” a Phaeozem, “Limyufumyufu” a Cambisol and “Luyinjayinga” an Umbrisol soil. Nine treatments; (i) complete nutrient treatment, (ii) N ...
Native Grass And Legume Biology And Establishment, 2019 South Dakota State University
Native Grass And Legume Biology And Establishment, Arvid A. Boe, P. J. Johnson
Oak Lake Field Station 30th Anniversary Retreat Presentations
No abstract provided.
Impact Of A Warmed Environment, Spike Morphology And Genotype On Fhb Levels In A Soft Red Winter Wheat Mapping Population, Elisane Weber Tessmann
Theses and Dissertations--Plant and Soil Sciences
Fusarium head blight (FHB) is a serious disease of wheat (Triticum aestivum) and other small grains; disease severity is affected by temperature and rainfall. This research comprised three studies: an artificially warmed experiment during 2016-2017, a morphology study and an FHB resistance screening study in 2015-2016, using approximately 250 wheat cultivars and breeding lines from programs in the eastern US. The location was the University of Kentucky Spindletop Research Farm in Lexington, KY. Higher levels of Fusarium damaged kernels and the toxin deoxynivalenol (DON) were observed in the warmed treatment compared to the control, and plant development was accelerated. In ...
Midwest Vegetable Trial Report For 2018, 2019 Purdue University
Midwest Vegetable Trial Report For 2018, Elizabeth Maynard, Petrus Langenhoven, Wenjing Guan, Brad R. Bergefurd
Purdue Fruit and Vegetable Research Reports
This is a compilation of 15 research trial reports from four land-grant universities in the Midwestern United States. Crops include cantaloupe, pickling cucumber, pepper, potato, pumpkin, summer squash and zucchini, sweet corn, tomato, and watermelon. Somecrops were evaluated in high tunnels or hoophouses. Most trials evaluated different cultivars or varieties. One report addressed plant spacing for sweet corn and one addressed soil block for production of tomato seedlings. A list of vegetable seed sources and a list of other online sources of vegetable trial reports are also included.
Field Evaluation Of Tobacco Engineered For High Leaf-Oil Accumulation, 2019 University of Kentucky
Field Evaluation Of Tobacco Engineered For High Leaf-Oil Accumulation, James Perry
Theses and Dissertations--Plant and Soil Sciences
The biofuel market is dominated by ethanol and biodiesel derived from cellulosic and lipid-based biomass crops. This is largely due to the relatively low costs and reliability of production. At present, production of non-food plant-derived oils for biofuel production in the U.S. is minimal. A research team from the Commonwealth Scientific and Industrial Research Organization (CSIRO), an independent Australian federal government research institution, has developed an efficient transgenic system to engineer oil production in tobacco leaves. This novel system is comprised of multiple transgenes that direct the endogenous metabolic flux of oil precursors towards triacylglycerol (TAG) production. Additional genes ...
Application Of Short Tandem Target Mimic (Sttm) Technique For Functional Analysis Of Micro-Rna396 In Transgenic Poplar Trees, 2019 Michigan Technological University
Application Of Short Tandem Target Mimic (Sttm) Technique For Functional Analysis Of Micro-Rna396 In Transgenic Poplar Trees, Surattana Boonsai
Dissertations, Master's Theses and Master's Reports
Short Tandem Target Mimic (STTM) is a commonly technique used for functional studies of a number of genes in several plant model systems. However, very little is known about application of STTM technique in tree species. In this study, STTM was applied to knock down microRNA396 (miR396) in transgenic poplar trees for the first time. STTM396 expression resulted in dramatic decrease in miR396 expression levels leading to taller plants with larger leaves and larger leaf cell size. Additionally, an expression analysis of growth regulating factor genes (GRFs) that are members of miR396 target gene family showed up-regulation of GRF07 gene ...
Disease Resistance In Wheat And Its Relatives, 2019 South Dakota State University
Disease Resistance In Wheat And Its Relatives, Ethan James Andersen
Electronic Theses and Dissertations
Plants have evolved a complex defense system against pests and pathogens utilizing many types of receptors, signaling factors, and defense compounds to detect pathogen presence and respond effectively. Since many pathogens have evolved immunesuppressing effectors used to reduce plant resistance, plants have evolved a family of receptors that detect pathogenic effectors as a result of an evolutionary arms race. These receptors contain Nucleotide-Binding Site and Leucine-Rich Repeat domains and are called NBS-LRR or NLR proteins. Many grasses possess huge genomes with hundreds of NLR-encoding genes, often found in clusters at the extra-pericentromeric regions of chromosomes, where unequal crossing over causes ...
The Effect Of Harvest Time On The Germination Rate Of Cultivated Northern Wild Rice, 2019 Iowa State University
The Effect Of Harvest Time On The Germination Rate Of Cultivated Northern Wild Rice, Jacques Duquette
Northern Wild Rice (Zizania palustris), a temperate aquatic grass, is a niche crop grown largely in northern Minnesota, northern California, and Canada. Seed at harvest is dormant and requires stratification in cold water before germination can begin. Germination rates from stratified seed harvested at the beginning of the season are low and rates increase as the harvest season progresses. Variation from year-to-year is present in commercial cultivars, but germination testing after minimal stratification can identify potential germination issues allowing for adjustment at planting. Germination rates are similar among multiple commercial and experimental lines.
Gamma Ray Irradiation Effects In Soybean With Regards To Protein And Amino Acids Contents Of Cysteine, Lysine, Methionine And Threonine, Janel Bettis
No abstract provided.
Identification And Characterization Of Stress Responsive Genes In Soybean And Sunflower, 2019 South Dakota State University
Identification And Characterization Of Stress Responsive Genes In Soybean And Sunflower, Surendra Neupane
Electronic Theses and Dissertations
Stress responsive genes encode proteins involved in plants’ response to abiotic and biotic stresses. Among such stress responsive proteins, proteins encoded by resistance genes (R genes) or nucleotide binding site-leucine-rich repeats (NBS-LRRs) and mitogen-activated protein kinases (MAPKs) are the major groups of proteins regulating biotic and abiotic stresses, respectively. Previous studies in Nepal’s lab at SDSU identified and characterized coiled coil (CC)-NBS-LRRs (CNLs), resistance to powdery mildew8 (RPW8)-NBS-LRRs (RNLs), NBS-LRR (NLs), and MAPK proteins in soybean. This study focuses on R and MAPK genes in the recently sequenced genome of sunflower as well as the toll-interleukin-1 receptor-like ...
Validation Of Candidate Loci For Maize Regrowability And Selection Of Near Isogenic Lines For The Loci, 2019 South Dakota State University
Validation Of Candidate Loci For Maize Regrowability And Selection Of Near Isogenic Lines For The Loci, Tajbir Raihan
Electronic Theses and Dissertations
Developing perennial grain crops is an effective way for sustainable agriculture and it can be a tool for the betterment of the overall ecosystem. To understand how perenniality works in perennial species, we made a cross between Zea diploperennis and maize (Z. mays) inbred line B73. F1 hybrids produced from this cross were selfed to get the F2 population and later the F2 population underwent Genotyping-By- Sequencing (GBS) analysis. Based on the candidate loci identified on chromosome 2 and chromosome 7 from GBS, SNP-specific markers were developed from the candidate locus interval and used to genotype the F2 population. X2 ...
Evolutionary Explanation For Invasive Abilities Of Centaurea Stoebe (Spotted Knapweed) In Introduced Areas, 2019 Grand Valley University
Evolutionary Explanation For Invasive Abilities Of Centaurea Stoebe (Spotted Knapweed) In Introduced Areas, Erin Koren
UReCA: The NCHC Journal of Undergraduate Research & Creative Activity
Since every invasion and every exotic species presents a new challenge with novel invasion strategies, the invasion of Centaurea stoebe (synonymously referred to as C. maculosa) into North America will be used as a case study to deeply examine invasion strategies. Centaurea stoebe is a short-lived (approximately 3 years) perennial member of the aster family (Broz et al., 2007). It occurs in two different cytotypes, or with two different chromosomal factors. In its home range, it exists in both diploid and tetraploid cytotypes, but only the tetraploid version is present in introduced ranges in North America (See Figure 1; Treier ...
Diversity Of Nitrogen-Fixing Symbionts Of Chamaecrista Fasciculata (Partridge Pea) Across Variable Soils, 2019 Old Dominion University
Diversity Of Nitrogen-Fixing Symbionts Of Chamaecrista Fasciculata (Partridge Pea) Across Variable Soils, Hanna E. Dorman, Lisa E. Wallace
Biological Sciences Faculty Publications
We evaluated whether geographic distance and soil characteristics influence genetic structure of nitrogen-fixing bacterial symbionts associated with the host plant Chamaecrista fasciculata (Partridge Pea). We tested phylogeographic clustering and associations between genetic distance, geographic distance, and soil variables using sequences of 2 bacterial genes and soil chemistry across 23 sites in Mississippi. We identified rhizobia isolated from Partridge Pea as Bradyrhizobium. We detected significant genetic structure at a regional level, and determined that rhizobia within each region were more phylogenetically related than expected. Significant correlation between genetic distance and distances based on soil chemistry suggests environmental influences on rhizobia diversity ...
Genetic Dissection Of Haploid Male Fertility In Maize (Zea Mays L.), 2019 Henan Agriculture University
Genetic Dissection Of Haploid Male Fertility In Maize (Zea Mays L.), Jiwei Yang, Yanzhi Qu, Qiong Chen, Jihua Tang, Thomas Lubberstedt, Haochuan Li, Zonghua Liu
Haploid genome doubling is a key limiting step of haploid breeding in maize. Spontaneous restoration of haploid male fertility (HMF) provides a more promising method than the artificial doubling process. To reveal the genetic basis of HMF, haploids were obtained from the offspring of 285 F2:3 families, derived from the cross Zheng58 × K22. The F2:3 families were used as the female donor and Yu high inducer No. 1 (YHI‐1) as the male inducer line. The rates of HMF from each family line were evaluated at two field sites over two planting seasons. HMF displayed incomplete dominance. Transgressive ...
Technological Advances In Maize Breeding: Past, Present And Future, 2019 United States Department of Agriculture
Technological Advances In Maize Breeding: Past, Present And Future, Carson Andorf, William D. Beavis, Matthew Hufford, Stephen Smith, Walter P. Suza, Kan Wang, Margaret Woodhouse, Jianming Yu, Thomas Lubberstedt
Maize has for many decades been both one of the most important crops worldwide and one of the primary genetic model organisms. More recently, maize breeding has been impacted by rapid technological advances in sequencing and genotyping technology, transformation including genome editing, doubled haploid technology, parallelled by progress in data sciences and the development of novel breeding approaches utilizing genomic information. Herein, we report on past, current and future developments relevant for maize breeding with regard to (1) genome analysis, (2) germplasm diversity characterization and utilization, (3) manipulation of genetic diversity by transformation and genome editing, (4) inbred line development ...