Thesis (Ph. D.)--University of Wisconsin--Madison, 1972. / Typescript. Includes photocopy of the Chinese text of the Jên hsüeh, reproduced two pages to a page. Vita. Includes bibliographical references (leaves 594-610).

Thesis (M.A.)--Zhongguo wen hua xue yuan. / Reproduced from typescript. Includes bibliographical references (p. 201-218).

Thesis (M.A.)--Guo li Taiwan da xue. / Cover title. Photocopy. Includes bibliographical references (p. 1-14 last group).

Thesis (M. A.)--University of Hong Kong, 2007. / Title proper from title frame. Also available in printed format.

Thesis (M.A.)--University of Hong Kong, 2000. / Includes bibliographical references.

Thesis (M.A.)--University of Hong Kong, 2000. / Includes bibliographical references. Also available in print.

Thesis (M.A.)--Zhongguo wen hua da xue, 1983. / Cover title. Reproduced from typescript; on double leaves. Includes bibliographical references (at end of work).

The visual system of the fruit fly is ideal for studying the association between neurons and glia. These interact during the morphogenesis of brain neuropiles and, in the adult, work together to maintain an ideal environment for neuronal function. In this thesis I characterise the pupal metamorphosis and adult structure of glia in the optic lobe’s lamina and medulla neuropiles. Photoreceptor axons from the fly’s compound eyes terminate at locations within these neuropiles that allow them intimate contact with glia. Some neuropile glia take up and inactivate the neurotransmitter histamine after its release at photoreceptor synapses. A shuttle pathway between the glia and photoreceptors then transports inactivated histamine back to photoreceptors for reuse. The gene CG12120 encodes the protein Tan, which liberates recycled histamine within the photoreceptor cytoplasm, it is then pumped into vesicles for re-release. Histamine, however, is not exclusive to the visual system. A system of glial barriers in the lamina, and around the brain, controls the movement of histamine between neuropiles as well as between the body and the brain. How histamine is reciprocally transported between photoreceptors and glia remains unknown despite attempts to uncover candidate transporters. Photoreceptor-specific capitate projections form as invaginations from neuropile glia into photoreceptor terminals. The transmitter needs of the photoreceptor appear to dictate the dynamic structure of capitate projections, which change in shape and number after perturbations that affect terminal location, synapse number or histamine release at the photoreceptor. This dynamism suggests that capitate projections play an important role, not only in recycling synaptic vesicles, but also in recycling histamine.

Tan spot, caused by the necrotrophic fungal pathogen Pyrenophora tritici-repentis (Ptr), is a major foliar disease in wheat. QTL mapping and meta-QTL analysis are effective methods to understand genetic basis of tan spot resistance, which can further facilitate resistant variety development. A number of QTL mapping studies have been conducted in hexaploid bread wheat whereas few mapping studies have been carried out in tetraploid wheat. Four interconnected tetraploid wheat mapping populations were evaluated for resistance to race 2 isolate 86-124. Twelve QTL were identified in three of the four mapping populations. To further extend understanding of tan spot resistance, meta-QTL analysis was conducted by using reported QTL from 14 previous QTL mapping studies. Three meta-QTL located on chromosomes 2A, 3B, and 5A showed large genetic effects in multiple populations and conferred resistance to multiple races. Integrating those race-nonspecific QTL could provide high and stable tan spot resistance in wheat.

Thesis (M. A.)--University of Hong Kong, 2005. / Title proper from title frame. Also available in printed format.