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Search Results: 1 - 10 of 486124 matches for " R.S. MEHROTRA "
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Dastur Memorial Lecture Award* : Bio-diversity of Phytophthora species in India - R.S. MEHROTRA
Indian Phytopathology , 2011,
Abstract: Well, I have been asked to deliver the Dastur Memorial Lecture by Indian Phytopathological Society, New Delhi for which I express my gratefulness to the society. Before I actually talk with regard to biodiversity of Phytophthora species in India, I would like to pay my tribute to Late Professor Jahangir Fardunji Dastur (1886-1971). Dastur received world wide recognition on his monumental work in the discovery of a new species of Phytophthora and named by him as Phytophthora parasitica. Professor Dastur was an outstanding plant pathologist and was the first elected President of the Indian Phytopathological Society. In consonance of Professor Dastur’s immense contribution on Phytophthora parasitica responsible for blight of castor oil plants and foot rot and leaf rot of Piper betle L. caused by Phytophthora parasitica var. piperina, I have decided to talk about the bio-diversity of Phytophthora species in India. In all, around 34 species and varieties of Phytophthora have been reported from India so far (Table 1). The genus Phytophthora (Gr. Phyton, a plant, phthora, destroyer) was established by deBary (1876) with P. infestans de Bary as the type species. He recognized that the fungus causing late blight of potato in Europe in 1840’s previously identified as Botrytis infestans Montagne, later Peronospora infestans (Mont.) Caspary, had unique characteristics like branching of the sporangiophore (at first monopodial, secondary branches sympodial), the shedding of the sporangia, the formation of zoospores in the sporangium and the germination of the sporangium by zoospores or by tube, which he considered distinct enough to be assigned a new genus name. The genus Phytophthora contains a wide range of species, from primitive to advanced, from soil to soil-aerial habitats. Because of its economic importance, the taxonomy, biology and pathology of Phytophthora species has been extensively studied and reviewed by several workers.
Seasonal population dynamics of vesicular arbuscular mycorrhizal fungi associated with Tectona grandis L. and Dendrocalamus strictus (Roxb.) Nees.
Indian Phytopathology , 2012,
Abstract: A field experiment was conducted at Kurukshetra (India) to determine the seasonal variation of vesicular arbuscular mycorrhizal (VAM) fungi associated with Tectona grandis and Dendrocalamus strictus. In Tectona grandis, VAM colonization was less in winter, remained moderate in summer and increased in the rainy season. Similarly, the most VAM spores were found in rainy season, moderate numbers in winter and the least in summer. In Dendrocalamus strictus, VAM root colonization decreased in winter and summer and reached maximum in rainy season. VAM spores increased in rainy season then steadily decreased in winter and summer. Glomus sp. was the dominant VAM fungi recovered at the site.
Electrophoresis pattern of mycelial protein - a tool for differentiation of Phytophthora species from Chukrasia tabularis
Indian Phytopathology , 2012,
Abstract: Protein profiling has been used by several workers to differentiate many species of Phytoph th ora. Polyacrylamide gel electrophoresis (PAGE) of mycelial proteins of Phytopftthora species has been carried out after extraction from 7 days old culture
On sectional curvatures of quasi-Einstein manifolds
R.S. Lemence
International Journal of Mathematical Analysis , 2012,
Poliartritis y fiebre
R.S. Pinals
Revista Cubana de Medicina , 1995,
Indian Phytopathology , 2012,
Abstract: Prof. R.S. Singh was born at village Gagaha in Gorakhpur district on 1st March, 1927. He did his matriculation in 1942 and was enrolled at the Government Agricultural College, Kanpur for his Post Graduation. In 1948 he obtained Masters Degree in plant pathology with distinction. He continued as a Research Assistant and became lecturer in plant pathology in 1951. He was awarded degree of Doctor of Philosophy by Agra University in 1956.
Implementation of High-Performance Image Scaling Processor using VLSI
International Journal of Computer Science and Mobile Computing , 2013,
Abstract: In this paper, a less complexity, less memoryrequirement, and high performance algorithm is proposed for VeryLarge Scale Integration implementation of an image scalingprocessor. The anticipated image scaling algorithm consists of aclamp filter, spatial filter and a bilinear interpolation. The spatialand clamp filters are added as pre-filters for reducing the aliasingartifacts resulted by the bilinear interpolation. A T-model andinversed T-model convolution kernels are proposed to reduce thecomplexity of the design. Combined filter is replaced by a dynamicestimation unit to minimize the hardware cost. This architecture istargeted to produce 320MHz with 6.08-K gate counts. Comparedwith Previous methodologies, this work shows better performancewith respect to cost and less complexity.
Enrique J. del Castillo: 09 de setiembre de 1934 - 03 de enero de 2011
R.S Calandra
Revista Argentina de Endocrinología y Metabolismo , 2011,
R.S. Lord
Scientia Militaria : South African Journal of Military Studies , 2012, DOI: 10.5787/22-4-319
Abstract: By 1983 the war in SWA/Angola had developed a predictable cyclical pattern. The seasonal variations allowed SWAPO to take up the offensive during the summer passage of the Inter-tropical Convergence zone (ITCZ) across Northern South West Africa. The ITCZ is that low pressure belt of unstable moist air, that traverses southwards to the latitude of Rehoboth during late October and November and returns northwards across Owamboland in late January through to April. The passage of this belt gives rise to the phenomenon of the "small rains" before Christmas and the "big rains" from February to April.
Establishment of Callus Tissue and Effect of Growth Regulators on Enhanced Sterol Production in Cissus quadrangularis L.
R.S. Nathawat
Biotechnology , 2011,
Abstract: Not Available
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