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 53 for “"reproductive development"”.
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Effect of Water-deficit Stress on Cotton During Reproductive Development
… in perturbation of carbohydrates of cotton reproductive units. To investigate this hypothesis growth room studies and field studies were conducted with the objectives being to document the physiological and biochemical changes that take place in cotton flowers and their subtending leaves …
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Dietary Influence on Reproductive Development in Female Largemouth Bass, Micropterus Salmoides
Dietary influence on reproductive development in female largemouth bass, Micropterus Salmoides, was investigated. Female bass were raised on either a pelleted diet or a forage diet of goldfish, Carassius auratus. Dietary levels of testosterone (T) and estradiol-178 (E2) were measured to determine …
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A Role for Late Meristem Identity2 in the Reproductive Development of Arabidopsis
… structures--branches and leaves--to producing reproductive structures--flowers--is a crucial developmental transition that significantly affects the reproductive success of flowering plants. In Arabidopsis thaliana , this transition is in large part controlled by the meristem identity regulator …
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Heat Stress Effects on Cotton During Reproductive Development and Subsequent Acclimation Responses
… temperatures coincide with the most sensitive developmental stage of flowering. Thus, the capacity to improve cotton’s ability to tolerate heat stress has been a significant focus for many decades. Therefore, this research was composed of several different components all designed to investigate …
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Physiological Responses of Cotton Genotypes to Water-Deficit Stress during Reproductive Development
… cultivars under water-deficit stress during reproductive development is not well elucidated. It was hypothesized that water-deficit stress during squaring and flowering stages would impair stomatal conductance and photosynthetic efficiency of leaves, which consequently would result in osmotic …
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Physiological and transcriptomic responses of soybean reproductive development to global climate change
… has been placed on understanding the response of reproductive organs to abiotic stress. Therefore, the aim of this thesis research was to examine the physiological and genomic responses of reproductive tissues to elevated temperature, elevated [O3] and increased drought stress. In Chapter 2, the …
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The Impact of Prohexadione-calcium on Grape Vegetative and Reproductive Development and Wine Chemistry
… 2000 and 2001 for impact to grape vegetative and reproductive development. In 2000, P-ca (250 mg/L) was applied to Seyval, Cabernet Sauvignon, and Cabernet franc (125, 250, and 375 mg/L). P-ca reduced primary shoot growth for all cultivars and decreased cane pruning weight of Seyval. P-ca (375 …
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The relationship between urinary organophosphate pesticide residues and reproductive development among boys living in the rural Western Cape
… studies have investigated their effect on the reproductive health and growth of pubertal boys. A previous analysis found significant differences in serum reproductive hormone levels and lower anthropometric measurements as well as non-significant lower sexual maturity ratings and testicular …
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Effects of Gestational and Lactational Exposure to 2,3,7,8-Tetrachlorodibenzo-P-Dioxin or Coplanar PCBs on Reproductive Development and Sexually Dimorphic Behaviors in Rats
In contrast sexually dimorphic non-reproductive behaviors were affected in TCDD and coplanar PCB exposed rats. In the initial study, the play behavior in TCDD exposed rats was suppressed. However in the follow-up study, when play behavior was tested with a different protocol than in the initial …
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Studies of Soybean Maturity Genes (Glycine Max, Photoperiod, Flowering)
… were conducted to investigate the genetics of reproductive development and latitudinal adaptation in soybeans {Glycine max (L.) Merr.}. Maturity gene isolines that were developed in the backgrounds of the cultivars Clark and Harosoy were used to examine the effects of maturity gene pairs …
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Gonadal histology and reproductive steroidogenesis of anurans exposed to potential endocrine disrupting contaminants
… the effects of environmental contaminants on the development of larval amphibians. The potential endocrine disrupting effects of pesticides suggest that the reproductive and developmental abnormalities observed in larval anurans may be due at least in part to impacts on the …
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Altered Reproductive Sink Development, Light Enhancement, and Nitrogen Fertilization: Effects on the Assimilation and Partitioning of Carbon and Nitrogen in Soybeans (Glycine Max L. Merr.)
… and 1979 to demonstrate the effects of altered reproductive development on the assimilation and partitioning (seed vs. stover) of carbon and nitrogen by soybeans (Glycine max L. Merr.). The effects of light enhancement and nitrogen fertilization on carb
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Annual Cycle of Serum Gonadal Steroids and Serum Lipids Associated With Migration of the Striped Mullet, <em>Mugil cephalus</em> L.
… examines changing physiological responses of the reproductive system in conjunction with the fall schooling and migratory periods.Serum gonadal steroids increased 8-10 fold from late September to the end of November for both sexes. The gonadal mass and Gonado-Somatic Index of Mugil cephalus rose …
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What is driving the range extension of Gibbula umbilicalis (Gastropda, Trochidae) in the eastern English Channel?.
… and Eastbourne) to determine whether: I. reproductive development and spawning was synchronised between different populations, and whether it was correlated to sea temperature; II. there was evidence of recent recruitment at the ―new‖ sites and if there was a difference in population …
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Development And Application Of Next Generation Sequencing Pipelines In Arabidopsis
… the role of specific proteins during floral development. In Chapter 2 analysis of gene expression and chromatin compaction with transcription factor LFY ChIP-seq annotation reveals the role of LFY-binding as a prerequisite for unlocking genes necessary for inflorescence. In Chapter 3, …
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The Role of Nutrition and Administration of Estrogen in Holstein Calf Growth, Development, and Adenogenesis
… heifers. Manipulating early postnatal growth and development through diet enables this practice to be successful. Puberty is greatly influenced by body weight (BW). Once heifers reach puberty, they become fertile and can achieve their reproductive potential. Growth can easily be influenced during …
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The influence of environment, season, plant growth stage and herbicide formulation the activity of glyphosate applied to Lolium perenne
… grown in cool conditions that had initiated reproductive development. Plants absorbed 38-47% of ¹⁴C-glyphosate applied to the youngest fully expanded leaf after 10h and 63% after 123h. This was distributed in a typical phloem translocated manner from source to sink, and after 123h, 23-28% of …
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Identification of Ligands for the Orphan Nuclear Receptor DAF-12 That Govern Dauer Formation and Reproduction in C. Elegans
… its role in regulating dauer formation, a non-reproductive larval state entered in harsh environments and marked by developmental arrest, stress resistance, and extended life-span. Genetic screens for genes controlling dauer formation have identified conserved endocrine signaling pathways that …
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Developmental and physiological responses of soybean to elevated growing temperatures
… reduced net carbon assimilation and altered development. Observation of yield and traits directly affected by heat stress under high growing temperatures is a crucial step in the development of crop models able to estimate yields under future warming scenarios. This thesis used an open-air …
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Reproductive Delay In The Female Cape Ground Squirrel (xerus Inauris)
… group members is fairly even (i.e. exhibits low reproductive skew), previous studies of Cape ground squirrels suggest the reproductive development of sub-adult females is inhibited by the presence of adult breeding female group mates. As reproductive delay is known to be influenced by a number of …
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