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Articles 901 - 930 of 14327
Full-Text Articles in Entire DC Network
Weed Incursion Of Irrigated Forage–Forb Mixtures Under Mob Grazing Or Mowing In The Mountain West Usa, Jennifer Macadam, Jared Gibbons, Xin Dai
Weed Incursion Of Irrigated Forage–Forb Mixtures Under Mob Grazing Or Mowing In The Mountain West Usa, Jennifer Macadam, Jared Gibbons, Xin Dai
Plants, Soils, and Climate Faculty Publications
Improving the quality of irrigated pastures can increase the profitability of ruminant production systems. Increasing pasture plant biodiversity is beneficial for ruminants, pollinators, and soil health, but it is challenging to manage weed incursion in seeded mixed-species pastures. This study assessed the weed incursion that resulted when forage legumes or grasses were seeded as binary mixtures with one of four non-legume forbs. Defoliation occurred at 6-week intervals as either mowing or mob grazing. Forbs were chicory, plantain, Lewis flax, or small burnet and forages were alfalfa, birdsfoot trefoil, creeping foxtail, intermediate wheatgrass, kura clover, meadow bromegrass, orchardgrass, perennial ryegrass, reed …
Function Over Form: The Benefits Of Aspen As Surrogate Brood-Rearing Habitat For Greater Sage-Grouse, Michel T. Kohl, Charles P. Sandford, Paul C. Rogers, Renee Chi, Terry A. Messmer, David K. Dahlgren
Function Over Form: The Benefits Of Aspen As Surrogate Brood-Rearing Habitat For Greater Sage-Grouse, Michel T. Kohl, Charles P. Sandford, Paul C. Rogers, Renee Chi, Terry A. Messmer, David K. Dahlgren
Aspen Bibliography
Species of conservation concern are often habitat specialists, posing significant risk to those species when specific plant communities are threatened. As a result, practitioners habitually focus conservation efforts on these communities while ignoring ecological mechanisms that explain the wildlife–plant relationships. In doing so, practitioners may overlook alternative vegetation communities that could maintain wildlife populations under alternative conditions (e.g., climate change). Here, we term these areas surrogate habitat, defined as vegetation communities or resource sites that provide similar critical resources as conventional sites, and assess their potential for conservation using a case study of greater sage-grouse (Centrocercus urophasianus) on …
Re-Indigenizing And Collaboratively Tending Urban Greenspaces, Divinity Nnenne Adewale
Re-Indigenizing And Collaboratively Tending Urban Greenspaces, Divinity Nnenne Adewale
University Honors Theses
This work details the active process of land tending with the intention of re-Indigenization in the Pacific Northwest at several Portland sites; The Native American Student Community Center, PSU Oak Savanna, and the Ridgefield National Wildlife Refuge. Land tending is an intuitive process, one rooted in love and respect for life of all forms as well as becoming the perpetual student; land tending is not a skill to be mastered, only practiced. Unlike environmental management, tending cannot be done separate from the earth, in a classroom or otherwise. Connections are what tending is built on top of: the foundation; effort …
Functional Characterization Of Haloarchaeal Udp-Glucose 4-Epimerase And 3-Hydroxybutyryl-Coa Dehydrogenase Genes In Nicotiana Tabacum, Çi̇ğdem Otur, Sezer Okay, Aslihan Kurt Kizildoğan
Functional Characterization Of Haloarchaeal Udp-Glucose 4-Epimerase And 3-Hydroxybutyryl-Coa Dehydrogenase Genes In Nicotiana Tabacum, Çi̇ğdem Otur, Sezer Okay, Aslihan Kurt Kizildoğan
Turkish Journal of Botany
The objective of the studyAbiotic stress poses a significant threat to plant survival. In response to the challenging conditions, plants have evolved various resistance mechanisms. Recently, genetic strategies have become increasingly prevalent in efforts to enhance abiotic stress tolerance and develop stress-resistant plant varieties. In this study, we employed heterologous expression of two metabolism-related haloarchaeal genes in the Nicotiana tabacum genome to improve its mechanism for salt and drought tolerance.Experimental procedure(s)The U2642 and CL165 genes encoding 3-hydroxybutyryl-CoA dehydrogenase and UDP-glucose 4-epimerase, respectively, were subcloned into the pIPKb004 vector under the control of Cauliflower mosaic virus 35S (CaMV35S) promoter using the …
Genome-Wide Identification And Characterization Of The Lea Gene Family In Common Bean And The Role Of The Dehydrin Gene Pvhdn3 In Enhancing Salt And Drought Tolerance In Transgenic Tobacco Plant., Gökhan Gökdemi̇r, Zafer Seçgin, Karam Mostafa, Mohamed Farah Abdulla, Musa Kavas
Genome-Wide Identification And Characterization Of The Lea Gene Family In Common Bean And The Role Of The Dehydrin Gene Pvhdn3 In Enhancing Salt And Drought Tolerance In Transgenic Tobacco Plant., Gökhan Gökdemi̇r, Zafer Seçgin, Karam Mostafa, Mohamed Farah Abdulla, Musa Kavas
Turkish Journal of Botany
Global climate change exposes crops to numerous abiotic and biotic stress factors, significantly threatening their growth, development, and overall productivity. Among the various abiotic stresses, salt and drought are the most detrimental, having a severe impact on yield stability. Late Embryogenesis Abundant proteins (LEA) represent a broad and varied class of polypeptides that accumulate in response to cellular dehydration across diverse organisms. Nonetheless, there has been a scarcity of studies on this protein family in common beans prior to this investigation. In this study, we identified 69 members of the LEA gene family in common bean, characterized by conserved LEA …
Identification Of Genes Associated With Zinc And Copper Concentrations In Walnut (Juglans Regia L.) By Gwas Analysis, Berfi̇n Nazlican Kaman, Bülent Yağmur, Erdal Orman, Muhammed Bahatti̇n Tanyolaç, Duygu Ateş
Identification Of Genes Associated With Zinc And Copper Concentrations In Walnut (Juglans Regia L.) By Gwas Analysis, Berfi̇n Nazlican Kaman, Bülent Yağmur, Erdal Orman, Muhammed Bahatti̇n Tanyolaç, Duygu Ateş
Turkish Journal of Botany
154 walnut genotypes from various geographic regions were analyzed in the study. Micronutrient concentrations of zinc (Zn) ranged from 1.61 to 8.98 mg/100 g, and the concentrations of copper (Cu) varied between 0.12 and 0.38 mg/100 g. 16,473 SNPs were generated using Diversity Array Technology (DArT) for genome-wide association (GWAS) studies. The Mixed Linear Model (MLM) utilizing the Q + K model revealed seven associated markers for the element Zn in 2021 and four in 2022. The MLM (Q + K) model indicated two associated markers for the element Cu in 2021 and three in 2022. The markers found in …
Exploring The Population Structure And Genetic Diversity In Apple Germplasm Using Ipbs-Retrotransposon Markers, Aigul Madenova, Angsagan Kuan, Amjad Ali, Muhammad Azhar Nadeem, Muhammad Tanveer Altaf, Balnur Kabylbekova, Dinara Kaldybaeva, Ti̇mur Turdi̇yev, Faheem Shahzad Baloch
Exploring The Population Structure And Genetic Diversity In Apple Germplasm Using Ipbs-Retrotransposon Markers, Aigul Madenova, Angsagan Kuan, Amjad Ali, Muhammad Azhar Nadeem, Muhammad Tanveer Altaf, Balnur Kabylbekova, Dinara Kaldybaeva, Ti̇mur Turdi̇yev, Faheem Shahzad Baloch
Turkish Journal of Botany
The apple (Malus domestica [Suckow] Borkh) is economically and culturally significant worldwide, thriving in temperate regions. This study examined genetic variations among 52 apple accessions from three research centers in Kazakhstan using the iPBS-retrotransposons marker system. Out of 35 screened markers, 12 highly polymorphic markers were selected for PCR amplification, resulting in 280 bands, 279 of which were polymorphic, yielding a 99.64% polymorphism rate. Genetic diversity indices showed substantial variation: effective number of alleles (ne=1.655), Shannon's information index (I=0.373), gene diversity (h=0.549), and an average genetic distance of 1.2. The analysis of molecular variance (AMOVA) indicated that 98.80% of the …
Selective Indel Marker Identification Across The Peanut (Arachis Hypogaea L.) Genome Using Ddradseq, Moin Qureshi, Bi̇rgül Guden, Hi̇lal Şule Tosun, Mojtaba Kordrostami, Sunil Shiwaji Gangurde, Bülent Uzun, Engi̇n Yol
Selective Indel Marker Identification Across The Peanut (Arachis Hypogaea L.) Genome Using Ddradseq, Moin Qureshi, Bi̇rgül Guden, Hi̇lal Şule Tosun, Mojtaba Kordrostami, Sunil Shiwaji Gangurde, Bülent Uzun, Engi̇n Yol
Turkish Journal of Botany
The advent of next-generation sequencing technologies, mainly double digest restriction site-associated DNA sequencing (ddRADSeq), has significantly advanced the development of molecular markers for crop genetics. This study used ddRADSeq to identify and develop insertion-deletion (InDel) markers in 25 peanut genotypes from diverse geographic regions. The bioinformatic analysis unveiled 62728 InDels across the peanut genome, predominantly between 1-5 bp, which constituted 96% of the total, while InDels of ≥ 6 bp accounted for 3.96%. We focused on 1013 InDels of at least 10 bp for further analysis, representing 1.61% of the total reads, with a distribution of 832 insertions and 181 …
Comparing Multivalent Cross-Linked Sodium Alginate/ Montmorillonite Beads Containing Curcumin Or Cayenne Pepper As Drug Carriers And Their Antimicrobial Resistance, Shionainn Traynor, Shubham Sharma
Comparing Multivalent Cross-Linked Sodium Alginate/ Montmorillonite Beads Containing Curcumin Or Cayenne Pepper As Drug Carriers And Their Antimicrobial Resistance, Shionainn Traynor, Shubham Sharma
SURE Journal: Science Undergraduate Research Experience Journal
The aim of the following work was to investigate and compare curcumin and cayenne pepper in microbeads composed of sodium alginate (SA) crosslinked with montmorillonite (MMT) to act as drug carriers and their antimicrobial resistance. The microbeads were prepared through ion-exchange in multivalent solutions of CaCl2, MgCl2 and AlCl3. The microbeads were characterized by Scanning Electron Microscopy (SEM), Energy Dispersive X-ray analysis (EDX) and the time required for intercalation of curcumin and cayenne pepper with MMT. Simulated intestinal fluid (pH 7.3) and gastric fluid (pH 1.2) at 37°C were used for comparison in swelling studies. …
Editorial - Sure Journal Vol 6, Anne M. Friel, Eva Campion, Sinead Loughran
Editorial - Sure Journal Vol 6, Anne M. Friel, Eva Campion, Sinead Loughran
SURE Journal: Science Undergraduate Research Experience Journal
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Farmers’ Decision Processes About Biocontrol Innovation Adoption: Dynamics Surrounding Push-Pull Technology In Western Kenya, Olufemi Samson Adesina, Stephen Whitfield, Susannah M. Sallu, Steven M. Sait, Jimmy Pittchar
Farmers’ Decision Processes About Biocontrol Innovation Adoption: Dynamics Surrounding Push-Pull Technology In Western Kenya, Olufemi Samson Adesina, Stephen Whitfield, Susannah M. Sallu, Steven M. Sait, Jimmy Pittchar
All Peer-Reviewed Publications
Smallholder farmers in sub-Saharan Africa (SSA) face increasing challenges from pests and climate change, among other issues. In response to these challenges, international agricultural research for development (R4D) investment is often focused on developing and scaling up techniques and technologies that bolster resilience. However, such approaches are often technocentric and follow linear assumptions of innovation diffusion and adoption, which overlook the complex realities that influence smallholder farmers’ dynamic decisions and engagement with novel techniques. This study used qualitative ethnographic methods to explore the experiences, knowledge construction, motivations, and decision-making of farmers in Western Kenya regarding the extensively researched push-pull technology …
Emerging Aquatic Plant Threats To Oregon Waterways, Jacob Rose, Gabriel Campbell
Emerging Aquatic Plant Threats To Oregon Waterways, Jacob Rose, Gabriel Campbell
Center for Lakes and Reservoirs Publications and Presentations
This brief presentation provides an overview some of two invasive aquatic plants that pose a threat to the Columbia River, where it borders Oregon and Washington. Flowering rush (Butomus umbellatus) and fragrant waterlily (Nymphaea odorata) threaten aquatic habitats up and down the Columbia River. Staff from the Center for Lakes & Reservoirs promoted a quick, picture-based key for flowering rush and lookalikes. This presentation was given orally at the Oregon Department of Agriculture's Interagency Noxious Weed Symposium to an audience of natural resource practitioners.
Rhizobacterial Isolates From The Native Plant Ceanothus Velutinus Promote Growth In Two Genotypes Of Tall Fescue, Ananta Raj Devkota, Sukhmanjot Kaur, Amita Kaundal
Rhizobacterial Isolates From The Native Plant Ceanothus Velutinus Promote Growth In Two Genotypes Of Tall Fescue, Ananta Raj Devkota, Sukhmanjot Kaur, Amita Kaundal
Plants, Soils and Climate Student Research
Global warming-induced climate change haunts the world, posing a critical threat to plant health and crop production. Overusing chemical fertilizers and pesticides poses a significant threat to soil health. Ceanothus velutinus (snowbrush) is a drought-tolerant, actinorhizal native plant found in the Intermountain West region of the US that harbors many plant growth-promoting rhizobacteria (PGPR). In this study, we evaluated the effects of PGPR CK-06, CK-22, CK-44, and CK-50 from C. velutinus on the growth and development of two tall fescue genotypes: (i) a lawn-type tall fescue blend and (ii) an endophyte-free forage-type tall fescue known as Armory. Tall fescue plants …
Potential Propagation Seedling Of Ramie (Boehmeria Nivea) From Various Types Of Stem Cuttings, Taufiq Hidayat Rahman Side, Mayasari Yamin, Sri Mulyani, Agung Pangestu Aji, Luthfi Ayunawati
Potential Propagation Seedling Of Ramie (Boehmeria Nivea) From Various Types Of Stem Cuttings, Taufiq Hidayat Rahman Side, Mayasari Yamin, Sri Mulyani, Agung Pangestu Aji, Luthfi Ayunawati
Jurnal Kultivasi
Ramie is a fiber-producing plant that can replace cotton as a raw material for the textile industry. In general, ramie plants are reproduced using rhizomes, but it takes a long time, around two years, to be used as a source of planting material. Therefore, other sources of explants besides rhizomes are required, such as stem cuttings. Explants from stem cuttings are quickly available and only need 2-3 months to be used as planting material. This study aims to determine the potential of effective stem cuttings that can be used as planting material for the propagation of ramie seedlings. The research …
Comparative Study Of Rice Morphological And Physiological Characteristics Of Rice Grown Under Organic And Inorganic Farming, Amad Safrudin, Ratna Dewi, Dulbari
Comparative Study Of Rice Morphological And Physiological Characteristics Of Rice Grown Under Organic And Inorganic Farming, Amad Safrudin, Ratna Dewi, Dulbari
Jurnal Kultivasi
Organic farming practices have shown a potential to improve rice yields, aside from the popular conventional ones. This study aimed to comparatively analyze the morpho-physiological characteristics of rice plants grown under organic and inorganic farming. This research was conducted at the Polinela Organic Farm experimental station (5°21'10"S 105°13'43"E, 114 m sea above level), from February to April 2023 using a completely randomized design. The results showed that rice grown organically exhibited a notably higher chlorophyll index and actual water use efficiency compared to those grown inorganically. Conversely, inorganic farming resulted in a greater number of tillers than organic farming. However, …
Evaluation Of Biochar As A Remediation Tool For Aminopyralid Contaminated Compost, Steven James Parris
Evaluation Of Biochar As A Remediation Tool For Aminopyralid Contaminated Compost, Steven James Parris
Masters Theses & Specialist Projects
Aminopyralid is a synthetic auxin herbicide which is applied to grass pastures to control broadleaf weed populations. Aminopyralid can contaminate compost through inputs derived from treated pastures such as manure and grass clippings. This possibility poses the threat of inadvertent herbicide exposure to sensitive vegetable plants through using compost contaminated with aminopyralid. Biochar can absorb pollutants and has a synergistic effect with compost when applied to the compost mixture. This study examined the relationship between biochar and aminopyralid through compost consisting of dairy manure and sawdust 1:1 mixture, aminopyralid (10μg/kg), and biochar at four treatment levels of total mass of …
Condition And Management Futures In A Quaking Aspen Recreation Area. Final Report To Snyderville Basin Special Recreation District, Paul C. Rogers, Georgie Corkery, Anna B. Miller
Condition And Management Futures In A Quaking Aspen Recreation Area. Final Report To Snyderville Basin Special Recreation District, Paul C. Rogers, Georgie Corkery, Anna B. Miller
Aspen Bibliography
In partnership with Snyderville Basin Special Recreation District (SBSRD), we undertook a study of ecological conditions and user preferences within a quaking aspen recreational destination forest. The location, in two sections know as Run-A-Muk and Right Turn Sage (RAM/RTS), has experienced some forest die-off in the principally aspen dominated forest dissected by ski, bike, and hiking trails. Graduate student Georgie Corkery led the study and successfully completed a Master's degree, in addition to providing needed information to SBSRD regarding the status, uses, and preferred actions at this facility. Key outcomes regarding aspen conditions include assigning causal factors—ungulate browsing and elevated …
Effect Of Integrated Crop–Livestock Systems On Soil Properties And Microbial Diversity In Soybean Production, Namita Sinha, Brett R. Rushing, Aniruddha Acharya, Shankar Gaapathi Shanmugam
Effect Of Integrated Crop–Livestock Systems On Soil Properties And Microbial Diversity In Soybean Production, Namita Sinha, Brett R. Rushing, Aniruddha Acharya, Shankar Gaapathi Shanmugam
Faculty Publications - Biological Sciences
Integrated crop and livestock systems (ICLSs) have been considered an important management-based decision to improve soil health by carbon sequestration. A two-year study (2019–2021) at CPBES in Newton, MS, was conducted to evaluate the effect of an ICLS on soil microbial diversity in the southeastern region of the USA, representing agroclimatic conditions that are warm and humid. Amplicons targeting bacterial 16S rRNA genes and fungal ITS2 regions were sequenced. Taxonomic assignment and characterization of microbial diversity were performed using QIIME2®. Soil fungal diversity pattern showed significant difference (alpha diversity, p = 0.031 in 2020 and beta diversity, p = 0.037 …
Effects Of Changing Farming Practices In African Agriculture, Todd S. Rosenstock, Peter Steward, Namita Joshi, Christine Lamanna, Nictor Namoi, Lolita Muller, Akinwale O. Akinleye, Erica Atieno, Patrick Bell, Clara Champalle, William English, Anna Sarah Eyrich, Angela Gitau, Dorcas Kagwiria, Hannah Kamau, Anna Madalinska, Lucas Manda, Scott Mcfatridge, Elijah Mumo, Alex Nduah, Babra Ombewa, Anatoli Poultouchidou, Janie Rioux, Meryl Richards, Julia Shuck, Helena Ström, Katherine Tully
Effects Of Changing Farming Practices In African Agriculture, Todd S. Rosenstock, Peter Steward, Namita Joshi, Christine Lamanna, Nictor Namoi, Lolita Muller, Akinwale O. Akinleye, Erica Atieno, Patrick Bell, Clara Champalle, William English, Anna Sarah Eyrich, Angela Gitau, Dorcas Kagwiria, Hannah Kamau, Anna Madalinska, Lucas Manda, Scott Mcfatridge, Elijah Mumo, Alex Nduah, Babra Ombewa, Anatoli Poultouchidou, Janie Rioux, Meryl Richards, Julia Shuck, Helena Ström, Katherine Tully
All Peer-Reviewed Publications
Information on the effects of changing agricultural management on crop and livestock performance is critical for developing evidence-based policies, investments, and programs. Evidence for Resilient Agriculture (ERA) v1.0.1 presents a dataset that harmonizes and aggregates 112,859 observations from 2,011 agricultural studies taken place in Africa between 1934 and 2018. The dataset includes information on the effect of 364 combinations of management practices and technologies on 87 environmental, social, and economic indicators of outcomes. Observations are geolocated and temporally tagged and thus can be linked to other datasets such as historical weather, soil properties, and road networks. ERA offers a new …
Evaluating The Roles Of Pollinators In Shaping The Floral Color Variation Of Phacelia Dubia, Katherine Riddle
Evaluating The Roles Of Pollinators In Shaping The Floral Color Variation Of Phacelia Dubia, Katherine Riddle
All Theses
Floral color variation within a species is a common occurrence and its maintenance has been a long-standing question in evolutionary biology. Differences in flower color between populations can be shaped by pollinator-mediated selection. Pollinators can exhibit innate and learned preferences for color that may influence floral color variation. These preferences may be molded by the visual environment in which pollinators forage. Most current understanding of how pollinators shape floral color variation involves dramatic differences in dominant pollinators between populations (e.g., hawkmoth vs. bee) and most behavioral work utilized model pollinators like honeybee and bumble bee. However, less is known about …
Texas Panicum (Urochloa Texana (Buckley) R.D.Webster) Management In South Carolina Peanut (Arachis Hypogaea L.) Production, Alexis Clobas-Celiz
Texas Panicum (Urochloa Texana (Buckley) R.D.Webster) Management In South Carolina Peanut (Arachis Hypogaea L.) Production, Alexis Clobas-Celiz
All Theses
Texas panicum (TP) is a persistent weed in South Carolina peanut fields, challenging growers with its season-long emergence and the limited availability of effective mid- to late-season herbicide options. Residual herbicides typically applied within 40 days of planting, fail to control late-emerging TP cohorts, making postemergence (POST) herbicides like clethodim and imazapic essential for managing this weed. Clethodim efficacy, however, depends on the TP growth stage and environmental conditions during application. To optimize control, this research evaluated clethodim applied at various TP growth stages (5 to 60 cm) and with different adjuvants. Clethodim was applied singly or in sequence, with …
2024 Seeded Watermelon Cultivar Evaluation In Indiana, Wenjing Guan
2024 Seeded Watermelon Cultivar Evaluation In Indiana, Wenjing Guan
Midwest Vegetable Trial Reports
The annual watermelon cultivar evaluation trial is conducted at Southwest Purdue Agricultural Center (SWPAC) in Vincennes, Indiana. It evaluates yield, fruit quality, and overall plant performance of commercial watermelon cultivars and advanced breeding lines. Purdue Extension and seed companies financially support the trial. The 2024 seeded watermelon cultivar trial evaluated 15 cultivars.
2024 Standard-Sized Seedless Watermelon Cultivar Evaluation In Indiana, Wenjing Guan
2024 Standard-Sized Seedless Watermelon Cultivar Evaluation In Indiana, Wenjing Guan
Midwest Vegetable Trial Reports
No abstract provided.
Characterization Of An Acetogenin-Carrying Nanosuspension And Its Effect On Bacteria Of Interest In The Poultry Industry, Brandon A. Lopez-Romero, Gabriela Aguilar-Hernandez, Billy M. Hargis, Maria De Lourdes Garcia-Magana, Ulises M. Lopez-Garcia, Rosa I. Ortiz-Basurto, Adalberto Zamudio-Ojeda, Juan D. Latorre, Efigenia Montalvo-Gonzalez
Characterization Of An Acetogenin-Carrying Nanosuspension And Its Effect On Bacteria Of Interest In The Poultry Industry, Brandon A. Lopez-Romero, Gabriela Aguilar-Hernandez, Billy M. Hargis, Maria De Lourdes Garcia-Magana, Ulises M. Lopez-Garcia, Rosa I. Ortiz-Basurto, Adalberto Zamudio-Ojeda, Juan D. Latorre, Efigenia Montalvo-Gonzalez
Poultry Science Faculty Publications and Presentations
This work aimed to develop a nanosuspension (NSps) as an acetogenin (ACGs) carrier, using soy lecithin (SL) and hydroxypropyl-β-cyclodextrin (βCD) named NSps-βCDSL-ACGs. It was characterized by various spectroscopic techniques (DLS, FTIR, UV-vis diffuse reflectance). Moreover, the NSps morphology was observed by transmission electron microscopy (TEM). Also, the antibacterial activity of NSps-βCDSL-ACGs was evaluated against strains of interest in the poultry sector. NSps-βCDSL-ACGs presented nanometric size (207–239 nm), acceptable polydispersity index (PDI) values (0.13–0.17) and a high Z potential value (−47.17–50.36 mV), demonstrating high stability. The presence of ACGs in NSps-βCDSL-ACGs was confirmed by FTIR analysis. The nanoparticles had a spherical …
Soybean Cyst Nematode (Heterodera Glycines Ichinohe) Virulence Assay Against Resistance Sources In Nebraska, Pratibha Karki
Soybean Cyst Nematode (Heterodera Glycines Ichinohe) Virulence Assay Against Resistance Sources In Nebraska, Pratibha Karki
Department of Plant Pathology: Dissertations, Theses, and Student Research
Soybean cyst nematode (SCN, Heterodera glycines Ichinohe), one of the major yield-limiting pathogens of soybean, is currently found in 60 counties of Nebraska that produce more than 90% of the state’s soybean. Often, yield loss occurs without any above-ground symptoms, which makes it difficult to manage. The primary management option is the use of SCN-resistant varieties. Several soybean plant introductions serve as resistance sources against SCN. Unfortunately, the single source, PI 88788, is used in approximately 90% of resistant varieties and its prolonged use has increased the virulence status of SCN in the U.S. A study was conducted to assess …
Induced Systemic Resistance Against Nematodes By Plant Growth-Promoting Microbes In Potatoes, Cole Grannan
Induced Systemic Resistance Against Nematodes By Plant Growth-Promoting Microbes In Potatoes, Cole Grannan
Master's Theses
Biofertilizers consist of plant growth-promoting microorganisms that establish symbiotic relationships with plant roots and stems. These beneficial microbes play a crucial role in enhancing plant defenses against various threats including insects, nematodes, and microbial pathogens. The purpose of this study was to investigate the effectiveness of two fungal biofertilizers (an endophytic strain of Beauveria bassiana (BA) and a mixture of arbuscular mycorrhizal (AM) fungi), specifically their ability to induce systemic resistance against plant- parasitic nematodes (PPNs) in potatoes (Solanum tuberosum cv. Masquerade) under controlled greenhouse conditions. The study utilized soil collected from Colorado State University’s San Luis Valley (SLV) Research …
Compact Solar-Powered Plasma Water Generator: Enhanced Germination Of Aged Seed With The Corona Dielectric Barrier Discharger, Yiting Xiao, Yang Tian, Haizheng Xiong, Ainong Shi, Jun Zhu
Compact Solar-Powered Plasma Water Generator: Enhanced Germination Of Aged Seed With The Corona Dielectric Barrier Discharger, Yiting Xiao, Yang Tian, Haizheng Xiong, Ainong Shi, Jun Zhu
Biological and Agricultural Engineering Faculty Publications and Presentations
Seed aging adversely affects agricultural productivity by reducing germination rates and seedling vigor, leading to significant costs for seed banks and companies due to the need for frequent seed renewals. This study demonstrated the use of plasma-activated water (PAW), generated by a solar-powered corona dielectric barrier discharger, to enhance germination rates of spinach seeds that had been stored at 4 °C for 23 years. Treating seeds with PAW at 17 kV for 15 min improved germination (by 135%) and seedling growth compared to untreated seeds. Through detailed analysis, beneficial PAW properties for seed development were identified, and a molecular mechanism …
2024 Personal-Sized Seedless Watermelon Cultivar Evaluation In Indiana, Wenjing Guan
2024 Personal-Sized Seedless Watermelon Cultivar Evaluation In Indiana, Wenjing Guan
Midwest Vegetable Trial Reports
The annual watermelon cultivar evaluation trial is conducted at Southwest Purdue Agricultural Center (SWPAC) in Vincennes, Indiana. It evaluates yield, fruit quality, and overall plant performance of commercial watermelon cultivars and advanced breeding lines. Purdue Extension and seed companies financially support the trial. The 2024 personal-sized triploid watermelon cultivar trial evaluated 18 cultivars.
Field Prevalence Of Ring Nematodes In South Carolina And Its Potential To Predispose Peanut Pods To Aflatoxin Contamination, Sarala Giri
All Theses
Peanut ring nematode, Mesocriconema ornatum is a nematode pest of peanut which can cause necrotic lesions on pods, pegs, and roots. It has been reported to facilitate secondary infections in peanut and other crops resulting in more significant losses in yield and quality. Aspergillus flavus is a ubiquitous facultative saprophyte that produces aflatoxin, the most problematic mycotoxin for global health and economy. Experiments were conducted at the Edisto Research and Education Center of Clemson University to examine the relationship of ring nematode populations at pegging and harvest with aflatoxin concentration in peanut kernels due to infection by A. flavus …
Elevation And Population Size Effects On The Survival Of Drosera Rotundifolia, Jessica Williams
Elevation And Population Size Effects On The Survival Of Drosera Rotundifolia, Jessica Williams
Electronic Theses and Dissertations
Carnivorous plants face significant conservation challenges due to habitat destruction, climate change, and illegal harvesting. This study explores how elevation and population size influence key-life history traits of D. rotundifolia, such as flowering phenology, prey capture efficiency, seed production, and germination rates. Higher elevations and larger populations are associated with extended flowering durations and increased prey capture. However, seed production and germination rates show complex patterns that are likely influenced by genetic diversity, resource availability, or environmental conditions. These insights inform targeted conservation strategies, emphasizing habitat preservation, enhancing prey availability, and maintaining genetic diversity. Public education and community engagement …