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 “"goldenrod"”.
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Intraspecific plant polyploidy effects on goldenrod insect herbivores
<p>Polyploidy is a dynamic process underlying a significant component of angiosperm diversity. This thesis research explores ploidy level as a source of genetic variability within a plant species, Solidago altissima L. (Asteraceae) and how this variation influences its herbivore community. More …
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Regulation of pyruvate kinase and glycerol-3-phosphate dehydrogenase in the freeze tolerant goldenrod gall fly: role in polyol cryoprotectant production
Larvae of the goldenrod gall fly, Eurosta solidaginis, can survive winter temperatures as cold as –55oC by using the freeze tolerance strategy of cold hardiness. This study examines pyruvate kinase (PK) and glycerol-3-phosphate dehydrogenase (G3PDH) that were purified from gall fly larvae …
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Mechanisms Promoting Spatial and Temporal Variability in Plant Defense
… adaptive value of resistance and tolerance of goldenrod (Solidago altissima). Within replicate early- and late-successional fields, I quantified the spatial structure of herbivore damage and goldenrod resistance, tolerance, and fitness traits, and assessed whether the spatial structure of …
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Foliar Symptoms of Acute Ozone Injury and Exposure Response Characteristics of Select Native Perennials
… beardtongue), Solidago nemoralis Aiton (gray goldenrod), Monarda fistulosa L. (wild bergamot), Silphium integrifolium Michx (wholeleaf rosinweed), Oligoneuron rigidum (L.) Small var. rigidum (stiff goldenrod), Rudbeckia missouriensis Engelm. ex C.L. Boynt.(Missouri orange coneflower), …
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Species and functional diversity effects on productivity and nutrient uptake: implications for designing sustainable agricultural systems in the Midwest
… compared to annual crops. The species stiff goldenrod was one species that performed as well as Corn for peak aboveground biomass and nutrient uptake. These results suggest that high diversity plant communities may potentially be the best chose for use in in-field buffer conservation …
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A Geographic Mosaic of Speciation in Eurosta solidaginis
… Tephritidae) is a fly that induces galls on tall goldenrod (Solidago altissima; Compositae) in North America with populations in the forest and prairie biomes of Minnesota, which are under divergent ecologically-based selection pressures. Previous research indicates that the goldenrod, the …
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Ecological and Evolutionary Consequences of Variation in Clutch Size in Asteromyia Carbonifera (o.s.) (Diptera: Cecidomyiidae)
… blister-like galls on the leaves of Canadian goldenrod, Solidago canadensis (Compositae). Female midges deposit one to five offspring per gall. During their brief adult existence, females produce a number of galls. The number of eggs laid at each ovipositional site is termed the "clutch size." …
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The Plant Diet of Mosquitoes: Sugar Feeding on Ornamentals and Wildflowers
… rate of sugar feeding on the attractive flower goldenrod (Solidago spp.) in the wild and explored its attractive qualities with the intent of developing a novel, ecologically friendly attractant. Similarly, we observed the sugar feeding behavior of invasive species Aedes japonicus on the toxic …
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Plant diversity and its effects on populations of cucumber beetles and their natural enemies in a cucurbit agroecosystem
… lady beetle <i>Coleomegilla maculata</i> with goldenrod (<i>Solidago</i> spp.), English plantain (<i>Plantago lanceolata</i>), and marjoram (<i>Origanum</i> spp.) in 1996. This study demonstrated the potential value of increasing the diversity of a cucumber field to control insect pests (and …
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Assessing the drivers of adaptive radiation in a complex of gall midges: A multitrophic perspective on ecological speciation
… incipient adaptive radiation on its host plant, goldenrod (<i>Solidago</i>). This galler uses a symbiotic fungus (<i>Botryosphaeria dothidae</i>) as a food source and as the major structural component of its gall. Use of this symbiont may be the key innovation that allowed colonization of its …
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Nutrient constraints on plant community production and organic matter accumulation of subtropical floating marshes
… availability at both sites, while at one site goldenrod (Solidago sempervirens) eventually captured a significant proportion of biomass. Nutrient resorption efficiency of nitrogen (N) and phosphorus (P) were both decreased with increased fertility. The degree of N- or P-limitation observed …
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Apple orchards feed and contaminate bees during, but even more so after bloom
… the bloom of an important late season resource, goldenrod (Solidago). We determined, through plotting and analyzing the communicated forage locations and from the collected pollen from returning foragers, that honey bees forage more within apple orchards after the bloom (29.4% and 28.5% foraging) …
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Evaluation of Cattle Use of A Deer Winter Range in the Black Hills
… with timber oatgrass (Danthonia intermedia), goldenrod (Solidago spp.), and rose (Rosa spp.) as abundant species. Bottom, upland meadow, and prairie sites received the heaviest grazing use by cattle both years, with Kentucky bluegrass comprising the highest percentage of the total forage …
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Host-Parasite Interactions of the Soybean Cyst Nematode and Snap Beans Compared to Soybeans (Phaseolus Vulgaris, Heterodera Glycines, Max, Resistance, Temperature)
… SCN was not proved on snap bean cvs. Eagle and Goldenrod.