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 28 for “"plant architecture"”.
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GENETIC DISSECTION OF PLANT ARCHITECTURE TRAITS IN HORDEUM VULGARE (BARLEY)
L’allettamento è una delle principali minacce che affliggono la produzione di orzo (Hordeum vulgare spp. vulgare) causando la caduta della pianta a causa di pioggia, vento e peso della pianta stessa. Dalla Rivoluzione Verde, i breeder hanno minimizzato il carico delle suddette forze riducendo il …
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Molecular approaches to improve soybean plant architecture and seed composition
… suggested an alternative strategy to remodel the architecture of soybean plants for better adaptation, especially to high yield environments. From the field trials in three latitudinal environments in the US, tall determinate soybean types were found to change the overall plant architecture of …
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A multiscale study of plasmodesmata: from channel ultrastructure to plant architecture
… pores that span the cell wall of neighbouring plant cells. The presence of these structures enables cell-cell movement of substances important for plant growth and development. This thesis describes the nature of plasmodesmata and explores their importance at various biological scales within …
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REGULATING CYTOKININ METABOLISM DURING INFLORESCENCE MERISTEM DEVELOPMENT TO PROMOTE HIGHER RICE PRODUCTIVITY THROUGH CHANGES ON PLANT ARCHITECTURE
… group of phytohormones positively regulates plant yield through the simultaneous regulation of source capacity (leaf senescence) and sink strength (grain number and size). It is hypothesized that directly modulating endogenous cytokinin content or sensitivity —precisely timed and targeted to …
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Can plant survive without steroids: Modulation of plant architecture and sex determination through brassinosteroid biosynthesis and signaling
Shoot architecture is a key determinant of grain yield in maize. Among the major plant growth regulators, brassinosteroids (BRs) affect multiple developmental processes and plant architecture traits, including organ size, sex determination, and leaf angle. However, genetic mechanisms by which BRs …
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On the Space Filling Nature of Trees: Clarifying and Validating a Model of Plant Architecture With Laser Scans of Tree Crowns
… illustrated in forest ecosystems. Individual plants can span up to 12 orders of magnitude in size as they climb through a canopy. During growth, trees allocate carbon and water dynamically to meet a variety of physiological and ecological constraints via the deployment of leaf area, the …
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Plant Architecture, Photosynthetic Responses, and Population Biology in the Palms Socratea Durissima and Scheelea Zonensis on Barro Colorado Island, Panama (Physiological, Tropical)
I investigated the role of canopy architecture and biomass allocation in the population biology of the palms Socratea durissima and Scheelea zonensis on Barro Colorado Island, Panama. Canopy architecture and biomass allocation change as plants mature, and can affect light interception and carbon …
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Lunar lander propellant production for a multiple site exploration mission
… to analyze the benefit of utilizing a processing plant architecture so that a lunar oxygen production demonstration mission can also provide a significant exploration and scientific return. This architecture will send one lander to the lunar surface with the capability of producing its own …
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Phenotypic and genetic variation in the architectural responses of a C4 grass to drought stress
… highly productive and highly drought tolerance. Plant architecture provides a framework for finding a balance between these targets. Plant architecture is the organization of the plant body and enables the capture of resources, influences the local microenvironment, and ensures reproductive …
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Co-orthologs of KATANIN1 Impact Plant Morphology and Show Differential Evolution in Maize
Understanding how the size and shape of crop plants and their specific organs are genetically controlled may allow for the development of cultivars with improved plant architecture. A microtubule-severing enzyme called katanin p60 is encoded by KATANIN1 (KTN1) in Arabidopsis or by an ortholog, …
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Plant morphology and gas exchange in Hesperaloe: Influence on its adaptation for cultivation.
… for this dissertation was that the contrasting plant architecture, and the distinct native environments of Hesperaloe funifera and H. nocturna should be reflected in differences in their eco-physiological responses, and that these, in turn, would determine these species' adaptability limits and …
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Linkage fine-mapping, GWAS and QTLs affecting morpho-agronomic traits of a common bean RIL population
… to obtain more productive cultivars, with plant architecture more adequate to the harvesting systems, with a cycle suitable to the regions of production, and grain type compatible with the requirements of the local market. An auxiliary tool in plant breeding is the DNA marker-assisted …
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High throughput phenotyping and quantitative genetics of leaf functional traits in C4 grasses
… and fuel is exacerbated by the need to increase plant productivity to maintain aboveground biomass and crop yield in suboptimal and resource limited environments. Improving crop productivity without increased resource use requires greater in whole plant water and nutrient use efficiencies. To …
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Genetic Improvement of Switchgrass Cell Wall Content, Leaf Angle and Flowering Time
… in monolignol biosynthesis. Stable transgenic plants were obtained with Pv4CL1 down-regulated. RNA interference of Pv4CL1 reduced extractable 4CL activity by 80%, leading to a reduction in lignin content with decreased guaiacyl unit composition. The transgenic plants had uncompromised biomass …
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The module mir156/spl affects bixin biosynthesis pathway in annatto (Bixa orellana L.)
Annatto [Bixa orellana L. (Bixaceae)] is a woody plant species that can reach up to 6 meters in height, with a fast growth pattern. Annatto produces a main apocaterotenoid namely bixin, a unique natural dye. This compound is highly used in the textile, pharmaceutical and food industries, among …
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Survey of plant density tolerance in U.S. maize germplasm
… to identify sources of favorable alleles for plant density tolerance and better understanding the genetics involved. Hybrids created using a genetically diverse set of inbreds representing parentage of key heterotic sub-groups were evaluated at plant densities ranging from 19,000 plants per …
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Characterization of signaling pathways underlying key growth and development processes in Populus trichocarpa
… abiotic stress which can force major changes in plant metabolism and nutrient mobilization. ABA, a prominent plant phytohormone with known roles in the adaptation to stress has shown novel connections in the regulation of growth promoting complexes such as TOR through antagonistic regulatory …
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The Role of Host, Environment, and Fungicide Use Patterns in Algorithms for Improving Control of Sclerotinia Blight of Peanut
… were compared to a 60, 90, 120 DAP (days after planting) schedule and the standard demand program. Field trials in 1994 indicated that fluazinam (0.58 kg a.i./ha) applied at an FDI of 32 performed similarly to the demand program and was more efficient than the DAP schedule. However, the original …
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PHOTOPERIODIC REGULATION OF RICE STEM ELONGATION BY THE GENE PINE1
In several plant species, inflorescence formation is accompanied by stem elongation. While these two processes need to progress harmoniously, until recently no genetic link had been found that could integrate and coordinate both pathways. Only a recent study has shed light on a new and unexplored …
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Influence of habitat complexity on diversity and community structure of arboreal spiders in grassland-shrub systems
… factors can influence the spatial position of plants in a landscape. Plant communities often determine the physical structure of the environment (microclimate, plant architecture) and therefore, have a considerable influence on the distribution of animal species, such as arthropods, and on …
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