Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 103 for “"strawberry"”.
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Transposon Tagging in Strawberry and Potato and Characterization of Representative Strawberry Mutants
Strawberry and potato are both important crop species in the world providing various nutritional values. The cultivated strawberry, Fragaria ananassa, is a fruit crop with a complex genome (2n=8x=56) whereas the diploid woodland strawberry, Fragaria vesca, has a smaller genome (2n=2x=14, 240 Mb) …
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Understanding Strawberry Plains Through Landscape Archaeology
Strawberry Plains is a site that is located in Marshall County, Mississippi and is comprised of Woodland, Chickasaw, antebellum, and postbellum components. The focus of this thesis was placed on the postbellum time period. The information presented here is intended to give a comprehensive view into …
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Strawberry Detection Under Various Harvestation Stages
<p>This paper analyzes three techniques attempting to detect strawberries at various stages in its growth cycle. Histogram of Oriented Gradients (HOG), Local Binary Patterns (LBP) and Convolutional Neural Networks (CNN) were implemented on a limited custom-built dataset. The methodologies were …
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Effect of Nitrogen Fertilizer Rates and Two-Spotted Spider Mite Incidence on 'Strawberry Festival' Strawberry Cultivar Performance
<p>The decline in strawberry (Fragaria x ananassa Duch.) production in Arkansas over the last 50 years has sparked an interest in the use of season extension techniques to improve yield and fruit quality. High tunnel strawberry production has the potential to become a profitable and sustainable …
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An Integrated Approach for Controlling Verticillium Wilt of Strawberry
<p>Strawberry (<em>Fragaria</em> x <em>ananassa</em>, Duch.) is an important crop in California, with more than 35,000 acres planted in 2018 resulting in a farm gate value of $3.1 billion. In 2020, California strawberry production accounted for more than 85% of national strawberry production and …
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An investigation into sustainable strawberry production using alternative growing systems
Strawberry is a fruit propagated by runners who avoid direct seed plantation due to its low germination rate. The study aimed to explore the germination rate of strawberry seeds by considering two varieties, ‘Temptation’ and ‘Florian,’ in different growing substrates (rockwool with and without …
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Exploration and Comparison of Image-Based Techniques for Strawberry Detection
<p>Strawberry is an important cash crop in California, and its supply accounts for 80% of the US market [2]. However, in current practice, strawberries are picked manually, which is very labor-intensive and time-consuming. In addition, the farmers need to hire an appropriate number of laborers to …
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Viewpoint Optimization for Autonomous Strawberry Harvesting with Deep Reinforcement Learning
… mounting labor pressures in the United States' strawberry industry. However, due to bottlenecks in machine perception and economic viability, a profitable and commercially adopted strawberry harvesting system remains elusive. In this research, we explore the feasibility of using deep …
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The ecology of translocated greater sage-grouse in Strawberry Valley, Utah
… from 2 source populations to a release site in Strawberry Valley, Utah during March-April 2003-2005. The resident population of sage-grouse in Strawberry Valley was approximately 150 breeding birds prior to the release. We radiomarked each female and documented survival, movements, reproductive …
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Genetic studies of phenotypic variants in the woodland strawberry, (Fragaria vesca)
The diploid woodland strawberry (Fragaria vesca) is a rapidly developing translational model for members of the family Rosaceae and other plants. This thesis represents some of the first forward genetics studies evaluating putative T-DNA insertional mutants in F. vesca. The observed phenotypes …
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Effects of shade on the cultivated strawberry (Fragaria X anassa Duch.)
Greenhouse and field studies were conducted to determine the effects of shade on photosynthetic, growth and yield responses of "Redchief" strawberries. Plants were exposed to 0 , 30 , 47 and 63 percent shade in the greenhouse. Net photosynthesis (Pn) as measured under the shade treatments …
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Effects of defoliation on the cultivated strawberry (Fragaria X ananassa Duch.)
… on photosynthesis, growth and yield of the strawberry. From preliminary photosynthesis experiments it was found that both 'Redchief' and 'Tribute' strawberry leaves reached maximum net photosynthesis (Pn) concurrently with full leaf expansion at approximately 8 to l0 days and 4 to 5 days, …
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Genetic and morphological diversity in the Icelandic woodland strawberry (Fragaria vesca L.)
The strawberry is one of twenty most valuable crop plants in the world, it is economically viable and a desired commodity of most. The strawberry genus (Fragaria) contains considerably few species but only on grows in Iceland, the F. vesca. The plant is the most widespread of all strawberry species …
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Epidemiological studies and sustainable approaches for the control of strawberry powdery mildew
Strawberry powdery mildew, caused by Podosphaera aphanis, is one of the most destructive diseases of strawberries worldwide, particularly under protected cultivation. Difficulties in detecting and managing early infections result in rapid development and yield losses up to 70%. Control still relies …
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Towards a Strawberry Harvest Prediction System Using Computer Vision and Pattern Recognition
… has been collaborating with the Cal Poly Strawberry Center to investigate the potential in using digital imaging processing to predict harvests more reliably. This paper shows the progress of that ongoing project, as well as what aspects could still be improved. Three main blocks comprise …
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Quality analysis of ultrasonically dried strawberry and comparison to conventional drying methods
Conventional, hot air drying is one of the most commonly used drying methods in the food industry for its simplicity, high productivity, and low capital cost. However, hot air drying has many limitations surrounding energy requirements, processing efficiency, and costs coupled with significant food …
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Improved regeneration and Agrobacterium-mediated transformation of wild strawberry (Fragaria vesca L.)
… giving functional genomics studies with wild strawberry (Fragaria vesca L.) the potential of identifying genes important in fruit crops. Fragaria vesca has a small genome size compared to the cultivated strawberry, Fragaria à ananassa Duch. (164 vs. 600 Mbp per 1C nucleus). This feature, in …
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