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 192 for “"Agriculture, Plant Culture"”.
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Methods to Improve Marker Assisted Selection (Mas) for the Sugary Enhancer1 (Se1) Trait in Maize
SSRs and RAPDs from regions previously associated with kernel sugars on chromosomes 2, 3 and 6 were explored as additional mapping strategies. A new population of 308 F2:3 families was derived from near-isogenic inbreds IL451b (su1 Se1) X IL451b (su1 se1). The population was grown in replicated …
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Induction, Selection, and Characterization of Ethylene -Insensitive Mutants in Antirrhinum Majus (Snapdragon)
A tissue culture screen for ethylene tolerance utilizing ACC was optimized for a snapdragon inbred line, OAK564. Moreover, 40,000 EMS mutagenized snapdragon seeds were also screened for ethylene insensitivity. From this, a total of 231 putative ethylene mutants were recovered. Putative ethylene …
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Soybean Response to Plant Growth Regulator Herbicides: Field Evaluation and Expression Analysis of Candidate Auxin -Responsive Genes
A lack of diagnostic tools specific to PGR herbicides often result in difficulty and confusion when responding to reported cases of soybean symptoms resembling PGR herbicide injury. PGR herbicides overstimulate the auxin hormonal pathway and induce gene expression. Identifying genes specifically …
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Starter Fertilizers for No-Till and Minimum-Till Corn
… zone to field capacity within 48 hours after planting enhanced the effectiveness of seed-placed fertilizers by increasing early plant growth and reducing the potential for injury.
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Quantitative Trait Loci, and Use of the Theory for Detecting Favorable Alleles in Maize Genetic Materials
Most of the tropical populations had favorable alleles for the diseases evaluated. When comparing populations crossed to elite inbreds for adaptation reasons, use of the same elite background is important. Four populations were found which were in the top ranked populations for relative number of …
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Soybean Resistance and Defense Responses Against Aphis Glycines
… (L.) Merrill] in North American since 2000. Host plant resistance is an economical way to control aphids. Soybean resistance against A. glycines was studied by (i) characterizing the antibiosis type of resistance, (ii) mapping the aphid resistance gene(s), (iii) investigating the potential factors …
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Metabolic Control Analysis of Carbon Pathways
… of carbon acquisition and allocation In plants using molecular approaches.
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Tomato Phytochemicals and Prostate Cancer Risk
… and phytofluene are not commercially available, plant cell culture methodologies utilizing the herbicide norflurazon and 14C-sucrose were developed to biosynthesize and radiolabel these carotenoids in tomato cell suspension cultures. DU 145 prostate tumor cells absorbed 14C-15- cis phytoene and …
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Selection Response, Genetic Variation, and Combining Ability of High Oil Maize Genotypes
… estimates were available for grain weight plant -1 in AEC6S3 lines and for grain yield in AEC6S2 x LH185 testcrosses. Due to significant negative genotypic correlation between oil concentration and grain weight plant -1 in AEC6 lines, breeding for increased grain weight plant-1 could reduce …
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Inheritance of Resistance to Fusarium Ear Rot and Fumonisin Accumulation in Corn
Fumonisins produced by Fusarium verticillioides ( syn = F. moniliforme) and F. proliferatum have been associated with potentially serious toxicoses of animals and humans. Thus, hybrids with low fumonisin accumulation in grain will be valuable for the production of corn-based human food products. …
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The Significance of Inter- and Intraspecific DNA Content Variation in Agriculturally Important Species
… content variation in agriculturally important plant species and determined any differences. The nuclear DNA content of 40 Malus species and hybrids was examined using flow cytometry. Estimates of total nuclear DNA content for this collection ranged from 1.45 pg for a diploid variety to 2.57 pg …
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Molecular Analyses of the Soybean Glabrous Mutation (P1) and of Transgenic Lines Designed to Modify Seed Composition
… significantly different than non-transformed plant seeds in that they had statistically significant increases in both average 100 seed weight and protein/oil ratios. These increases in average seed weight and protein/oil ratios from the transgenic lines were associated with decreased yield in …
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Transcript Profiling of Soybean Seed Development From Fertilization to Maturity
The goal of this work is to gain a global overview of the genes whose expression levels change significantly during various stages of soybean seed development, from just a few days after fertilization to the stages of seed fill, maturation, and desiccation. Gene expression over five stages from …
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Genetic, Genomic, and Breeding Approaches to Further Explore Kernel Composition Traits and Grain Yield in Maize
Maize (Zea mays L.) is a model species well suited for the dissection of complex traits which are often of commercial value. The purpose of this research was to gain a deeper understanding of the genetic control of maize kernel composition traits starch, protein, and oil concentration, and also …
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Modification of Vegetable Soybean Sugar Content via Gene Transformation
… some green clumps that were discarded during the culture process.
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Population Genetics and Differential Pathogenicity of the Soybean Brown Stem Rot Pathogen Phialophora Gregata
Brown stem rot (BSR) of soybean caused by the soilborne deuteromycete, Phialophora gregata, is of great importance to soybean production of the world. This study was aimed at discovering genetic variation in P. gregata from soybean and the relationship between genetic variation and pathogenicity. …
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Developing a Genetic Transformation Protocol for American Grapes (Vitis X Lambruscana) and Transforming Vitis to Produce Parthenocarpic Fruits
… and conversion of grapevine embryogenic cultures was established. In the second experiment, an efficient transformation method for 'Fredonia' and 'Melody Seedling' grapes, based on an Agrobacterium tumefaciens vector system, was developed. Finally, in the third experiment, 'Melody …
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Coat Protein -Mediated Resistance of Apple Mosaic Virus in Nicotiana Benthamiana
… detection of protein accumulation in transgenic plants carrying the full-length ApMV-CP and conferring resistance to ApMV suggested that transgenic coat protein accumulation was involved in eliciting the ApMV resistance response. Protein accumulation of lower-truncated ApMV-CP did not induce …
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Regeneration, DNA Methylation, and Transformation in Rosaceae
The effects of different concentrations of kanamycin, carbencillin, cefotaxime, and combinations of carbencillin and cefotaxime on regeneration from different tissues of rose (Rosa hybrida cv. Carefree Beauty) were investigated. Agrobacerium tumefaciens strain GV3101 containing pCAMBIA 2301 plasmid …
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In Vitro Kavapyrone Production and Genomic Stability of in Vitro Kava Cultures
… detection of polymorphism among in vitro kava cultures. An absence of normally observed bands was observed among organogenic callus cultures, while a small degree of ISSR polymorphism was detected among regenerated plantlets.
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