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 17 of 17 for “"plant reproduction"”.
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FUNCTIONAL CHARACTERIZATION OF VPS13 DURING SEXUAL AND APOMICTIC PLANT REPRODUCTION: THE MISSING GENE FOR PLANT BREEDING?
Nei prossimi anni, la produzione agroalimentare dovrà aumentare per assicurare cibo alla popolazione mondiale in continua crescita. La generazione di ibridi è uno dei metodi per incrementare la produttività, poiché questi si contraddistinguono per le migliori caratteristiche rispetto alle linee …
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Development of native species of Crete in the urban landscape: an investigation of systems and plant reproduction, adaptability and fitness of wild species in commercial horticulture
… chamaepence seedlings. Adventitious bulblets and plantlets formed on scales and clumps of shoots of S. sicula by the addition of BA and NAA producing over 20 bulblets per bulb. 2,4-D, BA, NAA and combinations produced callus, shoots and new corms on buds of C. macrophyllum. All studied species …
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Consequences of interaction between the native ant community and an invasive plant (Euphorbia esula)
… of mutualism during their lifetime (e.g., many plants rely on pollinators and seed dispersers). My research addressed these limitations in mutualism research by investigating (1) the outcomes of interaction between an invasive plant (Euphorbia esula L., Euphorbiaceae) and the native ant …
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MOLECULAR NETWORK CONTROLLING THE OVULE DEVELOPMENT IN ARABIDOPSIS THALIANA
Ovules are the essential organ for plant reproduction. Megasporogenesis, megagametogenesis, fertilization and embryogenesis take place within the ovule. In the ovule both sporophytic and gametophytic generation coexist. The analyses of this developmental process provides an excellent tool to …
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Understanding the classical maize floral development mutant, Polytypic ear1
… the tassel and ear, which are critical for both plant reproduction and agriculture. The classical semi-dominant mutant, Polytypic ear1 (Pt1), affects multiple aspects of inflorescence development, including floral development. Pt1 heterozygote ears and tassels appear to have barren tips with …
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SECURE PLANT FERTILITY IN A CHANGING CLIMATE
… cell (MMC) development is a crucial step for plant reproduction. MMC specification is regulated by hormones, and many genes are involved. SPOROCYTELESS/NOZZLE (SPL/NZZ) is considered the master regulator of this process since its mutant cannot specify the MMC. It encodes a transcriptional …
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Studies of herbivory and vegetation change in Karoo shrublands
… background of relationships between indigenous plants and animals and to indicate how modification of herbivore regimes might affect this arid environment. Specific objectives were to determine how grazing by domestic livestock brings about vegetation change, why such changes are sometimes …
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The Influence of Human Disturbance on Avian Frugivory and Seed Dispersal in a Neotropical Rainforest
… bird-fruit interactions that facilitate plant reproduction. On Tobago (West Indies), I compared patterns of frugivory in three adjacent rainforest habitats along a gradient of increasing disturbance: primary forest in a reserve, unprotected intermediate forest outside the reserve, and …
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GENETIC NETWORK CONTROLLING FEMALE GAMETOPHYTE AND EMBRYO DEVELOPMENT IN ARABIDOPSIS THALIANA
… interest since they are of great importance for plant reproduction. In the last year, different researches have been done in order to identify genes important for embryo sac development. In particular, I was interested in the identification of genes necessary for normal embryo-sac development and …
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THE SPECIAL WALLS AROUND GAMETES IN CERATOPTERIS RICHARDII AND AULACOMNIUM PALUSTRE: USING IMMUNOCYTOCHEMISTRY TO EXPOSE STRUCTURE, FUNCTION, AND DEVELOPMENT
… SWALLS, for the Doctor of Philosophy degree in PLANT BIOLOGY, presented on June 27, 2016, at Southern Illinois University Carbondale. TITLE: THE SPECIAL WALLS AROUND GAMETES IN CERATOPTERIS RICHARDII AND AULACOMNIUM PALUSTRE: USING IMMUNOCYTOCHEMISTRY TO EXPOSE STRUCTURE, FUNCTION, AND …
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Variability within the 10-year pollen rain of a seasonal neotropical forest
The effect of seasonal and multiannual environmental variability on the abundance and composition of Neotropical pollen rain was investigated using ten years of seasonal aerial pollen samples from Barro Colorado Island (BCI), Panama. Using canonical correspondence analysis, we identified the …
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Influence of Forest Management on Bumblebee-Plant Networks and Community Compositions in Eastern Kentucky Forest Openings
… are reliant on animal pollinators to facilitate plant reproduction. Yet the integrity of these pollination services is threatened by the declines of pollinators. Mounting evidence indicates landscape homogenization in agricultural, urban, and most notably in natural systems have corresponded with …
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Overcompensation of Ipomopsis aggregata following ungulate herbivory: getting to the root of it
The idea that some plants benefit from being eaten is counterintuitive, yet there is now considerable evidence demonstrating enhanced fitness following herbivory, i.e., plants overcompensate. The mechanistic underpinnings of overcompensation, however, are unclear. For example, it has been assumed …
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BEES, HONEY AND TERRITORY: A COMPLEX NETWORK OF INTERACTIONS BETWEEN LANDSCAPE, BEEKEEPING AND HONEY QUALITY
… pollination, they contribute to main-taining plant biodiversity and ensuring stable food production worldwide. However, bee populations have become increasingly exposed to multiple stressors in recent decades, including climate change, agricultural intensifica-tion, habitat loss, pollution, …
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AFRICAN TRADITIONAL PLANT KNOWLEDGE TODAY: An ethnobotanical study of the Digo at the Kenya Coast
… villages, kaya. During the kaya life, wild plants were important to them for most basic needs, hence they accumulated a traditional plant knowledge. In the 19th Century they moved out of the kaya, but the forests were protected as sacred sites, and this preserved the traditional plant …
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FOOD SECURITY: INNOVATIVE PLANT REPRODUCTIVE STRATEGY IN A CHANGING ENVIRONMENTAL CONDITION
Con il cambiamento climatico e l’aumento della popolazione, una delle nostre principali preoccupazioni è garantire la disponibilità alimentare globale. In questo contesto, è essenziale sviluppare strategie innovative per il miglioramento genetico delle piante. L'apomissia è un meccanismo …