Browsing by Subject "Major plant pathology"
Now showing items 1-20 of 59
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(Texas A&M University. Libraries, 1986)Maize dwarf mosaic virus (MDMV) is one of the Potyviruses whose strain relationships have not been clearly defined. Many of the characteristics which have been traditionally used in the strain definitions are now known to ...
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(Texas A&M University. Libraries, 1989)Comparative tests were conducted on Phymatotrichum omnivorum (Shear) Duggar and Pythium ultimum (Trow) to determine if an alternative mode of action exists for two different triazole fungicides. The accepted mode of action ...
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(Texas A&M University. Libraries, 1985)Two unrelated viruses, Watermelon Mosaic Virus-1 (WMV-1) and Watermelon Mosaic Virus-2 (WMV-2), cause the major virus diseases of cucurbits in Texas. WMV-1, with a host range restricted to cucurbits, was reported in Texas ...
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(Texas A&M University. Libraries, 1972)Benomyl (methyl 1-(butylcarbamoyl)-2-benzimidazole carbamate) inhibited growth of Phymatotrichum omnivorum in culture at concentrations of 0.5 μg/ml or higher. Concentrations of 0.25, 0.5, and 1 μg/ml benomyl did not inhibit ...
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(Texas A&M University. Libraries, 1994)Peanut leaves testing positive for tomato spotted wilt virus (TSWV) were collected, surfaced sterilized and placed on a support medium to promote callus growth. Initial observations detected significant differences in ...
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(Texas A&M University. Libraries, 1979)The concept o f a plant's immunity to virus disease implies a lack of infection as well as in ability of the virus to replicate. Plants having subliminal or latent virus infections are often considered immune. Microscopic ...
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(Texas A&M University. Libraries, 1992)Electron microscopy of SYBV showed icosohedral particles with maximum and minimum diameters of approximately 28 nm and 27 nm. The two isolates are statistically the same population at a probability greater than 95%. ...
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(Texas A&M University. Libraries, 1965)Investigations concerning the diseases of peanut (A. hypogea L. var. Spanish) caused by Rhizoctonia solani Kühn and Sclerotium rolfsii Sacc. were carried out to determine: 1. The relative pathological importance of these ...
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(Texas A&M University. Libraries, 1991)The effect of triazole fungicides on Phymatotrichum omnivorum (PO), grapevines and the interaction between grape rootstocks and PO were studied to have a better understanding of the control alternatives of PO in vineyards. ...
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(Texas A&M University. Libraries, 1987)Cotton stand establishment and the seed-seedling disease complex are influenced by several factors. Studies were conducted at three phases to determine the effect of seed quality, isolate and inoculum density of Pythium ...
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(Texas A&M University. Libraries, 1969)A series of experiments was carried out to support or negate the hypothesis that depressed root temperatures have an immobilizing effect on the translocation of tobacco mosaic virus within tobacco and tomato plants or ...
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(Texas A&M University. Libraries, 1974)The interaction of several environmental factors with varying rates of CO₂ on sclerotial survival of Phymatotrichum onmivorum was studied. Sclerotia of P. omnivorum were placed in sealed glass culture chambers and aerated ...
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(Texas A&M University. Libraries, 1979)Studies were conducted to determine the causal agent, etiology, and control of the St. Augustinegrass downy mildew. Sporangial development, zoospore production, and size and morphology of asexual reproductive structures ...
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(Texas A&M University. Libraries, 1972)False broomrape (FBR) is a tumorous disease that affects the roots of tobacco plants. The diseased roots developed tumors which are fleshy and usually whitish in color. Leaf-like structures from the hypertrophied tissues ...
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(Texas A&M University. Libraries, 1980)The effect of soil moisture, soil temperature and soil pH on sorghum downy mildew (SDM) disease incidence (DI) was evaluated. In the field, when sorghum and maize hosts were planted at different dates during the cropping ...
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(Texas A&M University. Libraries, 1975)Isolations from loblolly pine conelets, cones, seeds, and young seedlings yielded 61 fungous isolates. These isolates included one or more species of Aspergillis, Alternaria, Chaetomium, Cladosporium, Curvularia, Epicoccum, ...
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(Texas A&M University. Libraries, 1986)Six cotton cultivars, three multi-adversity resistant (MAR) and three non-MAR, and their 15 F₁ and 15 F₂ progenies obtained from a diallel set of crosses (no reciprocals) were used to determine the genetic system controlling ...
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Genetic studies in crosses between Sphacelotheca reiliana (Kühn) Clint. and S. sorghi (Lk.) Clint (Texas A&M University. Libraries, 1968)Interspecific crosses among haploid progenies from one teliospore of Sphacelotheca reiliana and one teliospore of S. sorghi were made. A high degree of compatibility was found among haploid lines of the two species. With ...
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(Texas A&M University. Libraries, 1993)Phymatotrichum omnivorum (Shear) Duggar is a phytopathogenic fungus with one of the largest host ranges known, especially when considering its limited geographic range. Questions concerning the origin and the evolution of ...
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(Texas A&M University. Libraries, 1981)Sorghum grain molds are defined as prematurity diseases resulting from infection of spikelets or developing kernels as early as anthesis by parasitic field fungi. Curvularia spp and Fusarium spp are the predominant grain ...