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 20 of 281 for “"blight"”.
-
Compost effects on plectosporium blight
Plectosporium blight, also known as Plecto, is an emerging pumpkin, zucchini, and squash disease persistent in the eastern United States since the late 1980s. Its pathogen, Plectosporium tabacinum, is a fungal saprophyte capable of surviving in the soil for several years with limited research …
-
Preliminary studies of boxwood blight
A disease of boxwood, so called "boxwood blight", began causing serious damage to boxwood plants after·the drouth of 1930. Four fungi were isolated from the affected parts of diseased plants. Macrophoma candollei waa isolated from the leaves, a species of Fusar1a from diseased stems and twigs, a …
-
Epidemiology of Soybean Pod and Stem Blight
… to investigate the development of pod and stem blight (PSB) of soybeans in the field as affected by soil fumigation, application of benomyl, and inoculations with Phomopsis sp. and its effect on agronomic traits: plant height, lodging, yields, and seed quality of soybeans. Two soybean cultivars, …
-
Resistance to anthracnose leaf blight in sorghum
… soil. There are three forms of the disease: leaf blight, stalk rot, and panicle and grain rot. Anthracnose leaf blight is usually encountered 30-40 days after planting and is responsible for most of the yield loss. Common anthracnose leaf blight symptoms in sorghum include chlorotic flecks on …
-
Genetics and genomics studies of rice disease resistance and development of alternative disease management methods for bacterial panicle blight and sheath blight
Bacterial panicle blight (BPB) and sheath blight (SB), caused by the bacteria Burkholderia glumae and B. gladioli, and the fungus Rhizoctonia solani, respectively, are two major rice diseases in southern rice growing regions of US. No completely resistant rice cultivars have been identified for …
-
Engineering durable late blight resistance to protect solanaceous plants
… the oomycete pathogen responsible for late blight of potato and tomato, is regarded as the biggest threat to global potato production and is thought to cost the industry around £6 billion annually. Traditionally, fungicides have been used to control the disease, but this is both economically …
-
Development of a bacteriophage-based biopesticide for fire blight
Fire blight is an economically important disease of apples and pears that is caused by the bacterium Erwinia amylovora. Control of the disease depends on limiting primaly blosson1 infection in the spring, and rapidly removing infected tissue. The possibility of using phages to control E.amylovora …
-
The image has the power : fighting blight in Philadelphia
Blight has plagued Philadelphia for the better part of a century, though the understanding of blight has changed dramatically over time. Originally used to describe neighborhood overcrowding, the term retained its currency even as once-overcrowded neighborhoods emptied out in the decades after …
-
Roles of tannase and hydrolyzable tannins in chestnut blight
… Barr), the causal agent of chestnut blight, was able to grow in total aqueous and tannin extracts from blight-susceptible American chestnut as well as in blight-resistant Chinese chestnut bark extracts, from winter and summer bark. Differences in the amount of conidial germination and …
-
Status of Northen Leaf Blight, Phaeosphaeria maydis Leaf Spot, Southern Leaf Blight, Rust, Maize Streak Virus and Physiologic Specialization of Exserohilum turcicum in Kenya
… zones. Exserohilum turcicum - induced blight was observed in all maize producing areas with disease incidence reaching over 45%. Lesions were sometimes over 400 mm long by 25 mm in width. Southern leaf blight caused by Bipolaris maydis was most severe in the Kenyan maize granary located …
-
Relationship of the apple aphis and other insects to the dissemination of fire blight in apple orchards, with a view to methods of blight control
… as indicated by the above data, proves that fire blight is due to a specific organism, a bacterium known in science as Bacillus amylovorus, which manifests itself in the following ways: 1. Blossom blight, due to the bacterial infecting the nectary of the flower and multiplying therein, later …
-
Molecular techniques for studying <i>Fusarium</i> ear blight of wheat
… to evaluate the severity of <i>Fusarium</i> ear blight (FEB) ofwheat under field and glasshouse conditions. In a field trial, PCR analysis highlighted the problem of diagnosis of FEB of wheat based on visual disease assessment where natural inoculum was present. PCR-based analysis detected <i>F. …
-
AFLP markers linked to Fusarium head blight resistance in Triticum aestivum.
… linked to genes controlling Fusarium head blight (FHB) resistance in Triticum aestivum L. FHB is a disease of cereal crops that results in reduced wheat yields, discoloured, shrivelled kernels, mycotoxin accumulation, and reduced seed and grain quality. Since resistance mechanisms in wheat …
-
Avoiding trade-off when enhancing Fusarium head blight resistance of barley
Fusarium head blight (FHB) is an economically important disease of barley caused by mycotoxin-producing Fusarium species. Resistance to FHB is associated with several agronomic traits, particularly height. Taller cultivars are generally more resistant; however increased height is less favourable …
-
STRUCTURE-FUNCTION STUDIES OF TRANSLOCATED EFFECTORS FROM THE LATE BLIGHT PATHOGEN
… threats to global food security. The late blight pathogen, Phytophthora infestans, is the most devastating pathogen of potato – the fourth most important food crop worldwide. Effective and durable resistance against late blight is desperately needed; and will depend on an improved …
-
Bacterial Blight of Soybean: Survival, Yield Reduction, and Disease Progress Model
… C or -12 C. The relationship between bacterial blight severity and yield and 300-seed weight of soybean cultivars Wells II and Williams 79 was studied in 1981 and 1982. Inoculations at five different growth stages of soybean plants resulted in bacterial blight development on different levels of …
-
Combining and mapping QTL for fusarium head blight (FHB) resistance in wheat
<p>Fusarium head blight (FHB) has become one of the most damaging wheat diseases in humid and semi-humid regions around the world. Single gene resistance to FHB in wheat provides only partial resistance and also the disease severity is highly influenced by environment. Consequently multiple genes …
Page 1 of 15