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Articles 1 - 30 of 40840

Full-Text Articles in Plant Sciences

An Orange Fluorescent Protein Tagging System For Real-Time Pollen Tracking, J. Rice, R. Mundell, R. Millwood, O. Chambers, L. Abercrombie, H. Davies, C. Stewart Dec 2102

An Orange Fluorescent Protein Tagging System For Real-Time Pollen Tracking, J. Rice, R. Mundell, R. Millwood, O. Chambers, L. Abercrombie, H. Davies, C. Stewart

C. Neal Stewart Jr.

Background Monitoring gene flow could be important for future transgenic crops, such as those producing plant-made-pharmaceuticals (PMPs) in open field production. A Nicotiana hybrid (Nicotiana. tabacum × Nicotiana glauca) shows limited male fertility and could be used as a bioconfined PMP platform. Effective assessment of gene flow from these plants is augmented with methods that utilize fluorescent proteins for transgenic pollen identification. Results We report the generation of a pollen tagging system utilizing an orange fluorescent protein to monitor pollen flow and as a visual assessment of transgene zygosity of the parent plant. This system was created to generate a tagged ...


Corn And Soybean Response To Wastewater-Recycled Phosphorus Fertilizers, Shane Ylagan Dec 2020

Corn And Soybean Response To Wastewater-Recycled Phosphorus Fertilizers, Shane Ylagan

Crop, Soil and Environmental Sciences Undergraduate Honors Theses

The ability to recycle phosphorus (P) from wastewaters could provide a sustainable, continuous source of P that might also help protect surface water quality from P enrichment. The mineral struvite (MgNH4PO4·6H2O) is an understudied material that can be created from Pcontaining wastewater and has been shown to have agricultural fertilizer value. The objective of this study was to evaluate the effects of electrochemically precipitated struvite (ECST), chemically precipitated struvite (Crystal Green; CG), diammonium phosphate (DAP), monoammonium phosphate (MAP), rock phosphate (RP), and triple super phosphate (TSP) on corn (Zea mays) and soybean (Glycine max) response in a 79-day greenhouse ...


Nodulation And Growth Of Shepherdia × Utahensis ‘Torrey’, Ji-Jhong Chen Dec 2020

Nodulation And Growth Of Shepherdia × Utahensis ‘Torrey’, Ji-Jhong Chen

All Graduate Theses and Dissertations

Shepherdia ×utahensis ‘Torrey’ (Elaeagnaceae) is a hybrid of two native actinorhizal plants in the Intermountain West, S. argentea (silver buffaloberry) and S. rotundifolia (roundleaf buffaloberry). Due to actinorhizal symbiosis, atmospheric nitrogen (N2) can be converted to ammonium, a bioavailable form. Actinorhizal plants have great value in sustainable nursery production and urban landscape use. However, nitrogen fertilizer negatively affects the nodulation of actinorhizal plants. As a newly developed hybrid, both the symbiont identity and nodule formation of S. ×utahensis ‘Torrey’ remain largely unknown. Therefore, experiments were conducted to investigate the nodule formation of S. ×utahensis ‘Torrey’ inoculated with field soils ...


Selection And Propagation Of Pinyon Pine, Kylie M. Lawson Dec 2020

Selection And Propagation Of Pinyon Pine, Kylie M. Lawson

All Graduate Theses and Dissertations

Single-leaf pinyon pines are drought tolerant trees native to the Great Basin. This species is a source of wild-collected, edible pine nuts that are in great demand. With no previous research apparent, this thesis aimed to identify wild trees with high cone production as sources for evaluating grafting onto immature and mature trees. Wild sources of scions were identified from four wild stands and six trees per stand. Counting and analyzing the number of scars left by mature cones along the leader branch provided an estimate for each tree’s productivity and identified trees with greater productivity within a stand ...


Examination And Empirical Forecast Of Wheat Yield In Northwest India Based On Climate And Socio-Economic Factors, Avik Mukherjee Dec 2020

Examination And Empirical Forecast Of Wheat Yield In Northwest India Based On Climate And Socio-Economic Factors, Avik Mukherjee

All Graduate Theses and Dissertations

This study summarizes the findings of research organized in two parts. The first part includes the impact of climate and socio-economic factors that affected wheat yield in northwest India during the 2000s. The second part focused on the forecast of average wheat yield for the two highest wheat producing states Punjab and Haryana.

Initial study focused on the impact of climate factors on wheat yield in northwest India. It has been found that above normal temperature coupled with water shortage i.e. irregular irrigation and low soil moisture contributed to the prolonged yield reduction during 2002-2010.

Next, we reviewed the ...


Water Use In Jujube (Ziziphus Jujuba) With Applications In Irrigation Timing And Quantity, Preston S. Colver Dec 2020

Water Use In Jujube (Ziziphus Jujuba) With Applications In Irrigation Timing And Quantity, Preston S. Colver

All Graduate Theses and Dissertations

Jujube (Ziziphus jujuba) is a major fruit crop in China where it has been a favored cash crop and successfully used to address erosion problems in the Loess Plateau region of western China. Further use of jujube in forestry projects and improved agricultural efficiency are very promising. This study sought to repeat a water-use study in two climates: a hot, semi-arid climate in Yangling, Shaanxi, China and a dry-summer, continental climate in Logan, Utah, USA. The study took physiological measurements on the trees with the aim of characterizing the way that jujube uses water. This would help to create an ...


Assessment Of Compost On Dryland Wheat Yield And Quality, Soil Fertility And Water Availability In Utah, Kareem A. Adeleke Dec 2020

Assessment Of Compost On Dryland Wheat Yield And Quality, Soil Fertility And Water Availability In Utah, Kareem A. Adeleke

All Graduate Theses and Dissertations

In 2014-2016 Kareem Adeleke undertook a graduate project under the supervision of Utah State University (USU) Plants, Soils and Climate professors, Drs. Jennifer Reeve, Astrid Jacobson, and Earl Creech. Organic wheat producers face numerous challenges, such as low soil moisture, soil erosion, and low soil fertility. Organic wheat growers generally do not apply fertilizer due to inability to recoup the costs in the short-term. Compost enhances long-term improvement in soil quality, soil fertility and increase yield in low input environments. Understanding of compost carryover effects in dryland wheat systems is necessary for increased yield that will allow adequate supply of ...


Effects Of Wi-Fi-Enabled Smart Irrigation Controllers On Water Use And Plant Health Of Residential Landscapes In The Intermountain West, Shane R. Evans Dec 2020

Effects Of Wi-Fi-Enabled Smart Irrigation Controllers On Water Use And Plant Health Of Residential Landscapes In The Intermountain West, Shane R. Evans

All Graduate Theses and Dissertations

Residential and commercial landscapes provide home and business owners with several benefits. These benefits range from improved air quality and flood control to the reduction of noise and breakdown of organic chemicals. However, these landscapes are routinely overwatered which can lead to plant disease, nutrient pollution, and large amounts of water being wasted. Utah State University, in conjunction with the Center for Water Efficient Landscaping (CWEL), the Utah Division of Natural Resources and Weber Basin Water Conservancy District, conducted an experiment to determine if Wi-Fi-enabled smart irrigation controllers conserve water as compared to average residential irrigation amounts and manually programmed ...


Grassland And Water Resources: Recent Trends And Future Challenges In Temperate Zones, Benoît Marc Oct 2020

Grassland And Water Resources: Recent Trends And Future Challenges In Temperate Zones, Benoît Marc

International Grassland Congress Proceedings

No abstract provided.


Rangeland Management And Hydrology, K. Wood, H. Rubio, C. Wood Oct 2020

Rangeland Management And Hydrology, K. Wood, H. Rubio, C. Wood

International Grassland Congress Proceedings

No abstract provided.


Restoration Of Vegetation And Soil Nutrients On The Northern Area Of Loess Plateau, Long Bai, L. M. Liu, B. Zhao, Y. Liu, H. X. Wang, T. Kobayashi Oct 2020

Restoration Of Vegetation And Soil Nutrients On The Northern Area Of Loess Plateau, Long Bai, L. M. Liu, B. Zhao, Y. Liu, H. X. Wang, T. Kobayashi

International Grassland Congress Proceedings

No abstract provided.


Determination Of Intensity And Socio‐Economic Natural Resources Degradation Factors In Iran Territory, Nasser Ansari, S. J. Sayedaghlaghi, M. H. Ghasemi Oct 2020

Determination Of Intensity And Socio‐Economic Natural Resources Degradation Factors In Iran Territory, Nasser Ansari, S. J. Sayedaghlaghi, M. H. Ghasemi

International Grassland Congress Proceedings

No abstract provided.


Influence Of Exclosure Year On Community Structure And Species Diversity On Typical Steppe, G. L. Shan, Zhu Xu, David R. Kemp, F. Ning Oct 2020

Influence Of Exclosure Year On Community Structure And Species Diversity On Typical Steppe, G. L. Shan, Zhu Xu, David R. Kemp, F. Ning

International Grassland Congress Proceedings

No abstract provided.


Rangeland Monitoring And Adaptive Management, T. J. Bai, Y. Q. Liang Oct 2020

Rangeland Monitoring And Adaptive Management, T. J. Bai, Y. Q. Liang

International Grassland Congress Proceedings

No abstract provided.


Patch Selection By Cattle Can Be Quantified Using Satellite Imagery And Gps In Extensive, Semi-Arid Savannas, Christopher Holloway, Peter O'Reagain, Nigel Tomkins Oct 2020

Patch Selection By Cattle Can Be Quantified Using Satellite Imagery And Gps In Extensive, Semi-Arid Savannas, Christopher Holloway, Peter O'Reagain, Nigel Tomkins

International Grassland Congress Proceedings

No abstract provided.


Monitoring Natural Pasture Status In Uruguay Using Satellite Images And A Soil Water Balance Model, J. P. Castaño, A. Giménez, L. Olivera Oct 2020

Monitoring Natural Pasture Status In Uruguay Using Satellite Images And A Soil Water Balance Model, J. P. Castaño, A. Giménez, L. Olivera

International Grassland Congress Proceedings

No abstract provided.


Restoring The Biodiversity Of The Roggeveld‐Renosterveld: Evaluation, Multiplication And Establishment Of Indigenous Plant Species On Old Agricultural Fields, J. C. Botha, C. F. Cupido, N. Visser Oct 2020

Restoring The Biodiversity Of The Roggeveld‐Renosterveld: Evaluation, Multiplication And Establishment Of Indigenous Plant Species On Old Agricultural Fields, J. C. Botha, C. F. Cupido, N. Visser

International Grassland Congress Proceedings

No abstract provided.


Effects Of Slope And Defoliation Intensity On The Effectiveness Of Desert Wheatgrass For Reduced Runoff And Soil Erosion Under Simulated Rainfall, Haitao Zuo, Juying Wu Oct 2020

Effects Of Slope And Defoliation Intensity On The Effectiveness Of Desert Wheatgrass For Reduced Runoff And Soil Erosion Under Simulated Rainfall, Haitao Zuo, Juying Wu

International Grassland Congress Proceedings

No abstract provided.


The Cause Of Grassland Desertification And Its Managing Strategies In Inner Mongolia, P. R. China (Session: A6), Zhaorigetu Chen, Hasibagan, Yuhai Bao, Mary Ann Rankin Oct 2020

The Cause Of Grassland Desertification And Its Managing Strategies In Inner Mongolia, P. R. China (Session: A6), Zhaorigetu Chen, Hasibagan, Yuhai Bao, Mary Ann Rankin

International Grassland Congress Proceedings

No abstract provided.


Seedling Recruitment In Steppe Communities, Na Zhao, Kun Wang, Zengwen Wang Oct 2020

Seedling Recruitment In Steppe Communities, Na Zhao, Kun Wang, Zengwen Wang

International Grassland Congress Proceedings

No abstract provided.


Distributed Overgrazing: A Key Cause Of Grassland Degradation In Inner Mongolia, Qian Zhang, Wenjun Li, Yina Xie, Changling Li, Yanbo Li Oct 2020

Distributed Overgrazing: A Key Cause Of Grassland Degradation In Inner Mongolia, Qian Zhang, Wenjun Li, Yina Xie, Changling Li, Yanbo Li

International Grassland Congress Proceedings

No abstract provided.


Design Of Leylus‐Chinensis Grassland Root‐Cutter, Yong You, Decheng Wang Oct 2020

Design Of Leylus‐Chinensis Grassland Root‐Cutter, Yong You, Decheng Wang

International Grassland Congress Proceedings

No abstract provided.


Study On Wind‐Sand Defending Mechanism Of Single Shrub, Tingting Yang, Xinhong Wu, Guozheng Yao, Peng Li Oct 2020

Study On Wind‐Sand Defending Mechanism Of Single Shrub, Tingting Yang, Xinhong Wu, Guozheng Yao, Peng Li

International Grassland Congress Proceedings

No abstract provided.


The Choice And Siting Of Natural Vegetation In Reclamation Of Disturbed Land, T. Weaver, K. Aho, S. Regele Oct 2020

The Choice And Siting Of Natural Vegetation In Reclamation Of Disturbed Land, T. Weaver, K. Aho, S. Regele

International Grassland Congress Proceedings

No abstract provided.


Selection Of Reference Genes For Qrt-Pcr Analysis In Medicinal Plant Glycyrrhiza Under Abiotic Stresses And Hormonal Treatments, Yuping Li, Xiaoju Liang, Xuguo Zhou, Zhigeng Wu, Ling Yuan, Ying Wang, Yongqing Li Oct 2020

Selection Of Reference Genes For Qrt-Pcr Analysis In Medicinal Plant Glycyrrhiza Under Abiotic Stresses And Hormonal Treatments, Yuping Li, Xiaoju Liang, Xuguo Zhou, Zhigeng Wu, Ling Yuan, Ying Wang, Yongqing Li

Entomology Faculty Publications

Best known as licorice, Glycyrrhiza Linn., a genus of herbaceous perennial legume, has been used as a traditional herbal medicine in Asia and a flavoring agent for tobacco and food industry in Europe and America. Abiotic stresses and hormonal treatments can significantly impact the development and metabolism of secondary metabolites in Glycyrrhiza. To better understand the biosynthesis of the trace-amount bioactive compounds, we first screened for the suitable reference genes for quantitative real-time reverse transcription PCR (qRT-PCR) analysis in Glycyrrhiza. The expression profiles of 14 candidate reference genes, including Actin1 (ACT), Clathrin complex AP1 (CAC), Cyclophilin (CYP), Heat-shock protein 40 ...


Inheritability Of Ciprofloxacin-Induced Mitochondrial Mutations From Parental To Offspring Generation Using Quantitative Polymerase Chain Reaction, Rose Mccoy Oct 2020

Inheritability Of Ciprofloxacin-Induced Mitochondrial Mutations From Parental To Offspring Generation Using Quantitative Polymerase Chain Reaction, Rose Mccoy

Honors Theses, University of Nebraska-Lincoln

In all eukaryotes, mitochondria are known as the powerhouse of the cell (Siekevitz, 1957). In plants, however, their mitochondrial genome is especially strange. Plant mitochondrial genomes are extremely large and contain both linear and circular subgenomic DNA fragments. Plant mitochondrial genomes undergo a significant amount of mutations in the form of rearrangements. However, it is not known how often these rearrangements are inherited by the next generation. It is thought that plant cells that are still dividing have higher rates of DNA repair, such as double-strand break repair, to ensure the quality of that plant lineage. As follows, it is ...


Soil Compaction By Slurry Injection And The Effect On Soil Quality, N. Van Eekeren, H. C. De Boer Oct 2020

Soil Compaction By Slurry Injection And The Effect On Soil Quality, N. Van Eekeren, H. C. De Boer

International Grassland Congress Proceedings

No abstract provided.


Assessment Of Plant Biodiversity In The Over Grazed Marginal Lands Of Kovilpatti, M. Ramamoorthy, I. S. Krishnasamy Oct 2020

Assessment Of Plant Biodiversity In The Over Grazed Marginal Lands Of Kovilpatti, M. Ramamoorthy, I. S. Krishnasamy

International Grassland Congress Proceedings

No abstract provided.


A Strategy To Select And Implement Restoration Projects In The Great Basin Desert, Michael Pellant, D. Major Oct 2020

A Strategy To Select And Implement Restoration Projects In The Great Basin Desert, Michael Pellant, D. Major

International Grassland Congress Proceedings

No abstract provided.


Food Crops As Temporary Cover Before Pasture Sowing In Mountains Of Central Italy, Andrea Pardini, R. Tallarico, F. Natali Oct 2020

Food Crops As Temporary Cover Before Pasture Sowing In Mountains Of Central Italy, Andrea Pardini, R. Tallarico, F. Natali

International Grassland Congress Proceedings

No abstract provided.