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.
Results
Showing 1 to 16 of 16 for “"Foliar symptoms"”.
-
Foliar Symptoms of Acute Ozone Injury and Exposure Response Characteristics of Select Native Perennials
… of 2010. Plants were evaluated for visible foliar injury symptoms and symptoms were described and photographically documented. Ten of the 27 species developed visible foliar injury in which interspecific and intraspecific response to O3 was observed. A severity index was used to compare …
-
Nutrient Disorder Foliar Symptoms, Foliar Nutrient Levels and Predictive Near-infrared Spectroscopy Nutrient Models of Teak (Tectona grandis L.f.).
North Carolina State University Theses Forestry & Environmental Resources.
-
Identification of phytotoxins produced by fusarium virguliforme associated with foliar symptoms of sudden death syndrome and genome-wide association studies for soybean disease resistance
… One of the effectors, FvNIS1, induced identical foliar symptoms to field-observed SDS through an overexpression system via Soybean mosaic virus. Results of phytotoxicity assay on eighty plant introductions (PIs), genome-wide association study (GWAS), and phytotoxicity assay for FvNIS1 gene …
-
Effect of fungicide seed treatments on Fusarium virguliforme and development of sudden death syndrome in soybean
… root analysis software to measure root disease symptoms. Roots were scanned and analyzed at the completion of the greenhouse trial. SDS foliar symptoms were rated several times throughout plant growth and the area under disease progress curve (AUDPC) was calculated. Harvest data were collected …
-
YIELD EFFECT AND VECTOR CAPACITY OF PEA APHID IN TRANSMITTING PEA SEEDBORNE MOSAIC VIRUS ON CHICKPEA AND FABA BEAN
… In contrast, faba bean expressed milder foliar symptoms, maintained normal height and pod set, but produced seeds with mottling, wrinkling, and discoloration. Seed counts in faba bean showed a downward trend, though not statistically significant. Pea developed characteristic PSbMV foliar …
-
Soybean Response to Plant Growth Regulator Herbicides: Field Evaluation and Expression Analysis of Candidate Auxin -Responsive Genes
… when responding to reported cases of soybean symptoms resembling PGR herbicide injury. PGR herbicides overstimulate the auxin hormonal pathway and induce gene expression. Identifying genes specifically induced by PGR herbicides may result in a diagnostic assay that identifies or rules out PGR …
-
A study of the molecular variability of some South African isolates of tobacco necrosis virus
… in potatoes that exhibited abnormal necrotic foliar symptoms and a D-type TNV was isolated and identified from the Up-to-Date potato variety. Immunoelectroblotting assay grouped the TNV isolates studied into two serotypes (A and D). This result was confirmed by NA hybridization with probes …
-
Etiologic studies of Verticicladiella procera Kendr. in pine Christmas trees
… in resinous stem lesions for 22 months without foliar symptoms, and resinous stem lesions with the fungus were significantly longer and deeper than wound lesions. An intensive isolation study revealed that the initial point of colonization in a tree is apparently at the root collar, progressing …
-
IDENTIFICATIN AND CHARACTERIZATION OF PATHOGENICITY GENES IN FUSARIUM VIRGULIFORME, THE CAUSAL AGENET OF SUDDEN DEATH SYNDROME (SDS) IN SOYBEAN
… in root and crown rot as well as SDS typical foliar symptoms including chlorosis, necrosis and complete defoliation. The use of soybean cultivars tolerant to SDS is still the most effective way to overcome the disease. On the other hand, the fungal isolates are known to have varied levels of …
-
Asymptomatic infections of Euphorbia lathyris by Macrophomina phaseolina.
… Avenue Farm in Tucson, Arizona. Plants without foliar symptoms and rhizosphere soil were sampled regularly from emergence until the following May or June. Soil rhizosphere populations ranged from 0.7-3.0 cfu/g soil in 1985 to 8.0-24.1 cfu/g soil in 1986, and did not change significantly over …
-
Dicamba Effects on Soybean (Glycine max) Growth, Yield, and Offspring
… contamination will likely increase. For soybean, foliar symptoms associated with dicamba damage do not necessarily reflect yield losses; hence, experiments were conducted to determine the effects of dicamba on soybean growth, yield, and offspring. Low rates of dicamba [1/64X (8.75 g ae ha-1) and …
-
Effects of Root Characteristics and Deep Tillage on the Development of Sudden Death Syndrome in Soybean
… Fusarium solani f. sp. glycines (FSG) relies on foliar severity ratings as an indication of disease resistance. However, foliar symptom severity does not always correlate well with infection on the root system or with reductions in yield. A combination of root and foliar symptom severity ratings …
-
Evaluation of oxidative enzymes in leaf tissue from intact cotton plants exposed to different oxygen concentrations
… into vinyl chambers of 95% humidity resulted in foliar symptoms of physiological stress, including chlorosis, cellular edema, leaf curling, and loss of turgidity. Of the oxidative enzymes analyzed, catalase activity decreased 30%, glycolate oxidase activity decreased 42%, and peroxidase. …
-
Assessing the Distribution and Impact of <I>Bean pod mottle virus</I> (BPMV) as a Re-emerging Virus, and <I>Soybean mosaic virus </I>(SMV) in Soybean Grown in Virginia
… between the severity of virus-induced foliar symptoms, relative accumulation of SMV, and extent of seed coat mottling. Thus, by avoiding the presence of BPMV at an early growth stage through proper timing of planting to avoid vectors, proper cultural practices like weed control, use of …
-
Role of virus genes in seed and aphid transmission and development of a virus-induced gene silencing system to study seed development in soybean
… transmitted by seed and aphids in soybean. The symptoms of SMV infection on soybean typically include mosaic and curling of leaves, reduced pod set and seed coat mottling. Although, the virus genes responsible for transmission by aphids have been studied extensively there has not been much …
-
Growth response and drought susceptibility of forest trees exposed to simulated acidic rain and ozone
… pH 5.6 compared to any other treatment. Visible symptoms appeared on the adaxial leaf surface of yellow-poplar seedlings submitted to acid rain at pH 3.0 regardless of ozone treatment. Visible foliar symptoms were also observed on the adaxial surface of sweetgum seedlings exposed to 0.1 ppm …