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 14 of 14 for “"tapetum"”.
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Microspore Wall Morphogenesis and Orbicule Ultrastructure of <i>Isoetes</i>
… observed on the inner wall of the secretory tapetum and their function remains unknown. Ultrastructural variation in orbicules of the nine studied species was documented. Orbicules were very variable in both shape and size.</p>
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The structural neurobiology of social anxiety disorder : a clinical neuroimaging study
… reduced FA in in the genu, splenium and tapetum of the corpus callosum. Additionally reduced FA was noticed in the fornix and the right cingulum. Reduced FA was also noted in bilateral corticospinal tracts and the right corona radiata. The results demonstrate structural alterations in …
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Biologia riproduttiva degli agrumi: aspetti fisiologici e genetici della sterilità, apirenia e fruttificazione
… polline attraverso alterazioni morfologiche del tapetum e la riduzione nel contenuto di amido. Il FLOWERING LOCUS T (CiFT) è il principale componente che controlla l’induzione antogena insieme all’esposizione alle basse temperature. Qui dall’analisi dei livelli di espressione di tre omologhi, …
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Organization of the Clare-Bishop Area of Cat Visual Cortex (Extrastriate)
… of the retina coincident with the reflective tapetum (Lee et al., 1984). Cells of the MIN have greater sensitivity in the dark than do the cells of other geniculate subdivisions. These findings suggest that the MIN is related to dim light vision. (ii) Associational input from area 18 is …
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The embryology of Prionium serratum (L.f.) Drege ex E.Mey. (Juncaceae:Cyperales) and its implications for the phylogeny of Cyperales
… conforms to that found in Juncaceae. The tapetum is glandular-secretory and microsporogenesis is simultaneous. Pollen is united in tetrahedral and cross tetrads and is tri-nucleate at release. The ovary is trilocular, there are three stigmata and the style is absent. There are many ovules …
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Analyses of a genic male-sterile mutant in soybean
… [beta]-1,3-glucanase expressed in the anther tapetum and involved in male sterility.</p>
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Scotopic Vision: Behavioral Sensitivity and Underlying Optical and Neural Factors
… factors (pupil size, focal length and the cat's tapetum). For both species, scotopic increment thresholds were proportional to the square root of retinal illuminance, in accordance with the de Vies-Rose law, which holds when noise in stimuli is the major limiting factor to sensitivity. A …
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WHAT IS THE EFFECT OF GLIOBLASTOMA SURGERY ON COGNITION AND QUALITY OF LIFE?
… including the optic radiation and left tapetum. Postoperative spatial function impairment was associated with microstructural changes in the white matter in both temporal lobes and left frontal lobe.
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Defining the role of cellulose synthase-like M genes in the plant cell wall
… components in the pollen mother cells (PMC) and tapetum cell walls, likely leading to pollen abortion. Moreover, α-tomatine, the major SGA in tomatoes, was completely absent in cslm2a/nop lines, indicating a key role for the CSLM2a protein in tomato SGA glycosylation. Collectively, this study …
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Vergleichend feinstrukturelle Untersuchungen an der Netzhaut der Europäischen Sardelle Engraulis encrasicolus L. (Engraulididae) und den Retinae anderer Clupeiformes
… Licht. Die PE-Zellen bilden ein eigentümliches Tapetum lucidum: Höchst regelmäßig ausgerichtete Guaninreflektoren formen einen Interferenz-Keilspiegel in unmittelbarer Nähe der Zapfenaußenglieder. Die Kartierung der Photorezeptoren innerhalb einer Retina zeigt ein Gebiet erhöhter Zapfendichte im …
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Regulation and function of extracellular invertases of tomato
… nachweisbar. Lin7 wird ausschließlich in Tapetum-Gewebe und Pollen exprimiert. Die hormonelle Regulation der Isogene wurde im Detail untersucht, hierbei konnten bekannte Phänotypen, welche durch Gibberellinsäure und Jasmonate bedingt werden, mit Invertasefunktionen in Korrelation gebracht …
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Genomic analysis of sex chromosomes and sex differentiation in Caricaceae
… role in male organ development, specifically tapetum development in the anther developmental pathway. Other transcription factors related to flower organ development and flowering time regulation, as well as genes that are known to participate in ABA, ROS and auxin signaling pathways were …