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Comparison Of The Acid Detergent Lignin (Adl) Among Seven Populations Of Lespedeza Davurica, Xiang Zhao, Kuanhu Dong, Yi Xing

IGC Proceedings (1977-2023)

No abstract provided.

Effect Of Cultivar, Row Spacing And Seeding Rate On Alfalfa Hay Yield, Zehong Zhang, Fuyuan Liu, Yunwen Wang, Tiejun Zhang

IGC Proceedings (1977-2023)

No abstract provided.

Net Photosynthesis Rate And Transpiration Rate Of Algonquin In Different Growth Years, Lijun Xu, B. Wang, Q. Z. Sun

IGC Proceedings (1977-2023)

No abstract provided.

Effects Of Additives On The Alfalfa Fibrous Residues Silage Quality, Yanlin Xue, Z. Yu, C. S. Bai, Q. F. Xu

IGC Proceedings (1977-2023)

No abstract provided.

The Influence Of The Grassland Management On Fodder Quality, V. Vintu, C. Samuil, T. Iacob, Alina Trofin, C. I. Popovici

IGC Proceedings (1977-2023)

No abstract provided.

Changes In Herbage Quality Of Cocksfoot, Prairie Grass And Tall Fescue During Regrowth, Lydia R. Turner, J. R. Roche, Danny J. Donaghy, Richard P. Rawnsley

IGC Proceedings (1977-2023)

No abstract provided.

Effect Of Cutting Frequency On Silage Making From Napier Grasses In Thailand, Sayan Tudsri, Suwance Ketkumalat, Sunantha Jantakool, Sunee Sintu

IGC Proceedings (1977-2023)

No abstract provided.

The Dynamic Changing Of Soluble Sugar In Different Alfalfa Varieties, Ya Tao, Q. Zh. Sun

IGC Proceedings (1977-2023)

No abstract provided.

Volume 4, Chapter 1-18: Aquatic And Wet Marchantiophyta, Order Lunulariales, Janice M. Glime

Bryophyte Ecology Subchapters

No abstract provided.

Understanding Producers’ Perspectives On Rotational Grazing Benefits Across Us Great Plains, Tong Wang, Hailong Jin, Urs Kreuter, Richard Teague

Economics Faculty Publications

Experimental findings on rotational grazing (RG) trials have generally differed from producer observations of RG outcomes on commercial scale ranches. Factors such as small plot size, short duration trials and relatively rigid grazing management that lacks responsiveness to the dynamic and complex social-ecological systems in grazing trials could all contribute to this disparity in outcomes. These differences call for a better understanding of producer perceptions of RG benefits. To fill this knowledge gap, we surveyed 4500 producers from the Northern and Southern Great Plains of the USA. Among the 875 respondents, 40.5% reported that they used continuous grazing (CG), 52.7% …

Temperature Regulation Of Plant Hormone Signaling During Stress And Development, Christian Castroverde, Damaris Dina

Biology Faculty Publications

Global climate change has broad-ranging impacts on the natural environment and human civilization. Increasing average temperatures along with more frequent heat waves collectively have negative effects on cultivated crops in agricultural sectors and wild species in natural ecosystems. These aberrantly hot temperatures, together with cold stress, represent major abiotic stresses to plants. Molecular and physiological responses to high and low temperatures are intricately linked to the regulation of important plant hormones. In this review, we shall highlight our current understanding of how changing temperatures regulate plant hormone pathways during immunity, stress responses and development. This article will present an overview …

Computational Prediction Of Mutagenesis In Glycine Max Rubisco Activase Monomer For Increased Thermal Stability, Catherine B. Emanuel, Hamza Haq '21, Vasanth Ramesh '21, Jaden Wang '21, Angela Ahrendt, Sarah Stainbrook

Student Publications & Research

No abstract provided.

Rhizosphere Microbiomes In A Historical Maize-Soybean Rotation System Respond To Host Species And Nitrogen Fertilization At The Genus And Subgenus Levels, Michael A. Meier, Martha G. Lopez-Guerrero, Ming Guo, Marty Schmer, Josh Herr, James Schnable, James R. Alfano, Jinliang Yang

Department of Agronomy and Horticulture: Faculty Publications

Root-associated microbes are key players in plant health, disease resistance, and nitrogen (N) use efficiency. It remains largely unclear how the interplay of biological and environmental factors affects rhizobiome dynamics in agricultural systems. In this study, we quantified the composition of rhizosphere and bulk soil microbial communities associated with maize (Zea mays L.) and soybean (Glycine max L.) in a long-term crop rotation study under conventional fertilization and low-N regimes. Over two growing seasons, we evaluated the effects of environmental conditions and several treatment factors on the abundance of rhizosphere- and soil-colonizing microbial taxa. Time of sampling, host plant species, …

Evaluation Of Masculinization Treatments To Produce Feminized Hemp Seed (Cannabis Sativa L.), Ted Fitzgerald, J. Wyatt Brown

Master's Theses

Cannabis sativa L. (hemp) develops plants with either male or female flowers, and growers of hemp greatly prefer female flowers which bear the glandular trichomes that contain cannabinoids. Feminized (all female) seeds are highly desired, which are produced by crossing a female plant with a masculinized female plant. Masculinization is achieved through the inhibition of ethylene and/or addition of gibberellins before flower initiation in female plants. The hemp industry uses silver thiosulfate (STS) to masculinize hemp, but spraying silver poses environmental concerns. This study compared STS to three other ethylene-inhibiting agents: aminoethoxyvinylglycine (AVG), cobalt nitrate (CBN), and 1-methylcyclopropene (1-MCP). Treatments …

Reciprocal Transplant And Machine Learning Study Of Oak Mistletoe On Three Host Oak Species In Santa Margarita, California, Ella Abelli-Amen

Master's Theses

At Santa Margarita Ranch, California, oak mistletoe (Phoradendron villosum) parasitizes valley oak and blue oak but cannot be found growing on coast live oak despite its abundance and ability to parasitize coast live oak in other areas. It seems as though this species of mistletoe is specializing on certain host oak trees, but the mechanisms of this specialization are unknown. In order to investigate this pattern, we utilized a type of machine learning in GIS called supervised classification as well as a reciprocal transplant study in the field. The three species of oak trees were classified with 87% accuracy using …

Effects Of Compost On Soil Health And Greenhouse Gas Emissions: A Case Study In A Mediterranean Vineyard, Tsz Fai Wong

Master's Theses

Compost is commonly used as an organic amendment in cropping systems such as vineyards, and has been shown to be beneficial to carbon (C) sequestration and soil health. As perennial crops, grapevines have a larger potential for C sequestration than most crops. Yet, there is a lack of understanding regarding the relationship between compost application rate, the magnitude of C sequestration, and its environmental tradeoff in the form of greenhouse gas (GHG) emissions. In the study, we investigated the effects of compost application rate on soil C sequestration, GHG emissions, crop growth, and overall soil health after two annual compost …

Insights Into The Molecular Evolution Of Fertilization Mechanism In Land Plants, Vijyesh Sharma, Anthony J. Clark, Tomokazu Kawashima

Plant and Soil Sciences Faculty Publications

Land plants have evolved successive changes during their conquest of the land and innovations in sexual reproduction have played a major role in their terrestrialization. Recent years have seen many revealing dissections of the molecular mechanisms of sexual reproduction and much new genomics data from the land plant lineage, including early diverging land plants, as well as algae. This new knowledge is being integrated to further understand how sexual reproduction in land plants evolved, identifying highly conserved factors and pathways, but also molecular changes that underpinned the emergence of new modes of sexual reproduction. Here, we review recent advances in …

Using Thermal Imaging To Measure Water Stress In Creeping Bentgrass Putting Greens, Joseph G. Foral Jr.

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Thermal imaging is a developing tool that can help turf managers reduce water consumption and improve irrigation scheduling, but in-depth studies are needed to maximize this potential. This study evaluated the ability of thermal imaging to identify water stress in a creeping bentgrass (Agrostis stolonifera ‘007’) putting green. Water use and canopy temperature (T_c) were measured for plots subjected to three levels of measured water replacement (full, half, and none) to evaluate changes over a range of soil water potentials (SWP). Water use was consistent across the irrigation treatments up to several days before observed wilt …

Environmental Factors Associated With Nitrogen Fixation Prediction In Soybean, Andre Froes Borja Reis, Luiz Moror Rosso, Larry C. Purcell, Seth Naeve, Shaun N. Casteel, Peter Kovacs, Sotirios Archontoulis, Dan Davidson, Ignacio A. Ciampitti

Agronomy, Horticulture and Plant Science Faculty Publications

No abstract provided.

Dna Barcoding Of The High-Altitude Artemisia And Nepeta Species, Vyacheslav Dushenkov, Csanad Gurdon, Shukhratdzhon Satorov

Publications and Research

DNA barcoding was performed for four medicinal plant species from the mountain region of Tajikistan. The nucleotide sequences for Artemisia sieberi, Artemisia scoparia, Artemisia vulgaris, and Nepeta glutinosa were deposited into the GenBank at the National Center for Biotechnology Information.

Derivation Of The Generic Names Of North American Grasses (Names In Current Or Recent Use), James P. Smith Jr

Botanical Studies

No abstract provided.

Morphophysiological And Molecular Characterization Of Millet (Panicum Miliaceum L.) Varieties For Crop Improvement In Western Europe, Massimo Vischi, Nicola Zorzin, Maria Bernhart, Johanna Winkler, Dipak Santra, Carla Pappalardo, Stefano Marchetti

Department of Agronomy and Horticulture: Faculty Publications

Background

Global warming and issues in favour of a more sustainable agriculture suggest a reconsideration of minor cereals in European agrosystems. Compared to other summer crops, proso millet has a remarkable drought resistance and could be used to improve crop rotation and biodiversity. Proso millet is also increasingly sought by industry to produce novel foods such as those designed for celiac patients. In this study, a thorough characterization of 11, commercially available, proso millet (Panicum milliaceum L.) varieties was carried out as a preliminary step for crop reintroduction and breeding in Western Europe.

Methods

The cultivars under evaluation were …

Effects Of Traditional And Microbially-Focused Restoration Techniques On Soil Communities In Tallgrass Prairies, Zachary J. Whitacre

Masters Theses

Tallgrass prairies have virtually disappeared in many parts of their former range due to the conversion of this ecosystem to farmland. In more recent years there have been efforts to restore these prairies on reclaimed agricultural land. However, these restored prairies do not resemble their remnant counterparts in many ways, such as in soil microbial community composition and metrics related to carbon storage. In Chapter 1, I show that bacterial communities in a restored prairie and an adjacent remnant prairie in southwest Michigan differ in their immediate and longer-term responses to prescribed fire, a commonly used prairie restoration and maintenance …

Redox Responses Of Arabidopsis Thaliana To The Green Peach Aphid, Myzus Persicae, Junhuan Xu, Carmen S. Padilla, Jiamei Li, Janithri Savindya Wickramanayake, Hillary D. Fischer, Fiona Goggin

Entomology and Plant Pathology Faculty Publications and Presentations

The green peach aphid (Myzus persicae) is a phloem-feeding insect that causes economic damage on a wide array of crops. Using a luminol-based assay, a superoxide-responsive reporter gene (Zat12::luciferase), and a probe specific to hydrogen peroxide (HyPer), we demonstrated that this aphid induces accumulation of reactive oxygen species (ROS) in Arabidopsis thaliana. Similar to the apoplastic oxidative burst induced by pathogens, this response to aphids was rapid and transient, with two peaks occurring within 1 and 4 hr after infestation. Aphid infestation also induced an oxidative response in the cytosol and peroxisomes, as measured using …

High Resolution Mapping And Candidate Gene Identification Of Downy Mildew Race 16 Resistance In Spinach, Gehendra Bhattarai, Wei Yang, Ainong Shi, Chunda Feng, Braham Dhillon, James C. Correll, Beiquan Mou

Horticulture Faculty Publications and Presentations

Background

Downy mildew, the most devastating disease of spinach (Spinacia oleracea L.), is caused by the oomycete Peronospora effusa [=P. farinosa f. sp. spinaciae]. The P. effusa shows race specificities to the resistant host and comprises 19 reported races and many novel isolates. Sixteen new P. effusa races were identified during the past three decades, and the new pathogen races are continually overcoming the genetic resistances used in commercial cultivars. A spinach breeding population derived from the cross between cultivars Whale and Lazio was inoculated with P. effusa race 16 in an environment-controlled facility; disease response was …

Can Home Garden Be A Safe Haven In Times Of Crisis? To Measure Householders Attitudes, Preferences And Willingness To Have Home Garden At Time Of Pandemics, Noura Mubarak Al Mansouri

Theses

The new coronavirus that has rapidly become a worldwide outbreak leads people to Self-quarantine, where work, school, and shopping have become through remote applications. Keeping fit and being healthy is important at any time, especially during the coronavirus pandemic. Having a garden or outdoor space provides the opportunity to have a place that can be used to maintain a healthy life and well-being of an individual. The coronavirus lockdown has provided the time ad opportunity to create a garden that has been always wanted by householders. A Garden is a plot of ground where herbs, fruits, flowers, vegetables, and etc. …

Using Network-Based Machine Learning To Predict Transcription Factors Involved In Drought Resistance, Chirag Gupta, Venkategowda Ramegowda, Supratim Basu, Andy Pereira

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Gene regulatory networks underpin stress response pathways in plants. However, parsing these networks to prioritize key genes underlying a particular trait is challenging. Here, we have built the Gene Regulation and Association Network (GRAiN) of rice (Oryza sativa). GRAiN is an interactive query-based web-platform that allows users to study functional relationships between transcription factors (TFs) and genetic modules underlying abiotic-stress responses. We built GRAiN by applying a combination of different network inference algorithms to publicly available gene expression data. We propose a supervised machine learning framework that complements GRAiN in prioritizing genes that regulate stress signal transduction and …

Evolution And Development Of The Seed Coat In Gymnosperms, Cecilia Zumajo

Dissertations, Theses, and Capstone Projects

Gymnosperms and angiosperms are the most abundant plant lineages on earth and constitute a turning point in the evolution of plants because they are at the origin of the seed, a key morphological and developmental novelty in the evolution of land plant. Although the morphological variation of the seed, across seed plants, may on its own, explain the complexity of this structure, the origin, and evolution are even more, the understanding of these topics is still under discussion. Evidence shows that previous studies have often lacked the component of gene expression, particularly in species that are not model species. The …

A Research Road Map For Responsible Use Of Agricultural Nitrogen, Michael Udvardi, Frederick E. Below, Michael J. Castellano, Alison J. Eagle, Ken E. Giller, Jagdish Kumar Ladha, Xuejun Liu, Tai Mcclellan Maaz, Barbara Nova-Franco, Nandula Raghuram, G. Philip Robertson, Sonali Roy, Malay Saha, Susanne Schmidt, Mechthild Tegeder, Larry M. York, John W. Peters

Agricultural and Environmental Sciences Faculty Research

Nitrogen (N) is an essential but generally limiting nutrient for biological systems. Development of the Haber-Bosch industrial process for ammonia synthesis helped to relieve N limitation of agricultural production, fueling the Green Revolution and reducing hunger. However, the massive use of industrial N fertilizer has doubled the N moving through the global N cycle with dramatic environmental consequences that threaten planetary health. Thus, there is an urgent need to reduce losses of reactive N from agriculture, while ensuring sufficient N inputs for food security. Here we review current knowledge related to N use efficiency (NUE) in agriculture and identify research …

Improved Taste And Texture In Novel Popcorn Varieties Compared To Conventional Lines, Leandra Parsons, Oscar Rodriguez, David R. Holding

Department of Agronomy and Horticulture: Faculty Publications

Abstract Quality Protein Popcorn (QPP) varieties were bred out of a unique germplasm pool derived from Quality Protein dent Maize and conventional popcorn lines. To identify and compare distinctive characteristics within this population, a new sensory method was employed that coupled hedonic numeric rankings of common sensory traits appearance, aroma, texture, and taste with an “overall likability” score while requiring the selection of specific descriptors for taste and texture. Participants tasted six popcorn cultivars, rated each sample based on sensory factors, and offered specific descriptors for taste and texture. This sensory method identified two QPP hybrids with higher overall likability …