Satish Chandra

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This paper presents speed and acceleration characteristics of different types of vehicles on four-lane and six-lane divided highways under mixed traffic conditions. These characteristics are very intrinsic to the particular vehicle category plying on a roadway. Speed and acceleration data were collected on six sections of four-lane divided inter-urban(More)
A hyperparasite was observed on Aecidium elaeagni-latifoliae during a survey in Umiam, Meghalaya. Morphological characterization using light, scanning electron microscopy and molecular characterization by sequencing ITS region, large subunit of nuclear ribosomal DNA and phylogenetic analysis revealed the identity of the pathogen as Simplicillium(More)
Rhizoctonia solani was isolated from marigold (Tagetes patula) showing web blight symptoms in Meghalaya, India. Fluorescence microscopy was used to confirm its multinucleate character. Molecular characterization using ITS1-5.8-ITS2 region of nrDNA proved that it belonged to AG1-IB subgroup. To our knowledge, this is the first record of AG1-IB on marigold(More)
Bryophytes are the second largest group of land plants after angiosperms. There is very less knowledge available about medicinal properties of these plants. Bryophytes are popular remedy among the tribal people of different parts of the world. Tribal people use these plants to cure various ailments in their daily lives. Bryophytes are used to cure hepatic(More)
Chilli veinal mottle virus (ChiVMV) causes significant economic loss to chilli cultivation in northeastern India, as well as in eastern Asia. In this study, we have developed a single-tube one-step reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay for rapid, sensitive and specific diagnosis of ChiVMV. Amplification could be(More)
Powdery mildew on soybean was observed in October, 2014. Morphological and molecular characterisation was done for ascertaining the identity of the anamorph. Light and scanning electron microscopy revealed it to be a Pseudoidium anamorph. Morphological characters were examined considering the possibility of presence of Erysiphe glycines, E. diffusa and E.(More)
Powdery mildew on Khasi mandarin (Citrus reticulata) is considered as one of the factors responsible for citrus decline in this region. Molecular identification was done for powdery mildew pathogen (anamorph) on Citrus reticulata based on nrDNA ITS region (ITS 1-5.8s and ITS2). Maximum likelihood analysis clustered the sequences from this study with(More)
Phylogenetic analysis was conducted using the ITS region of nrDNA for confirmation of the identity of anamorphic powdery mildew pathogens on pea and white clover. Maximum likelihood and bayesian analysis clearly indicated that the pathogen responsible for powdery mildew on pea in northeast India is Erysiphe pisi rather than E. trifoliorum (syn. E. trifolii)(More)
During a routine survey rust was found on Schefflera wallichiana in Meghalaya in November-December 2012. Microscopic studies with light and scanning electron microscopy revealed the pathogen to be Nyssopsora thwaitesii. Molecular characterisation of the pathogen was also done by sequencing (18S), ITS region and large subunit (25S) of nrDNA of N. thwaitesii.(More)