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Inadequate information about the genetic structure of the polyphagous Rhizoctonia solani has made sheath blight resistance breeding a difficult task. To assess the variability in the Indian populations of sheath blight fungus, 18 isolates were collected from different rice growing regions of India and analyzed for virulence and electrophoretic profiles of(More)
The rural folk of North Andaman, India use the traditional medicine for their primary health care. Folklore medicinal uses of 72 interesting medicinal plant species along with botanical name, local name, family, habit, part used, disease for which the drug is administrated, mode of administration are presented. These 72 plant species which provide the crude(More)
India, a mega-diverse country, possesses a wide range of climate and vegetation types along with a varied topography. The present study has classified forest types of India based on multi-season IRS Resourcesat-2 Advanced Wide Field Sensor (AWiFS) data. The study has characterized 29 land use/land cover classes including 14 forest types and seven scrub(More)
The changes in species composition, abundance and forest stand structure were analyzed across altitudinal regimes in tropical forests of Eastern Ghats of northern Andhra Pradesh, India. Three 1-ha plots were established with one each in low, medium and high altitudes. A total of 153 species, 2129 stems (709 stems · ha−1) of ≥10 cm girth were enumerated.(More)
Taxonomy is the science which serves as the major tool in discovering, describing and classifying the diversity of life. However, the existence of impediments to taxonomy is recognized as one of the major obstacles in the conservation and sustainable use of biodiversity. The acute shortage of taxonomic expertise and resources has resulted into a poor(More)
The present study outlines an approach to classify forest density and to estimate canopy closure of the forest of the Andaman and Nicobar archipelago. The vector layers generated for the study area using satellite data was validated with the field knowledge of the surveyed ground control points. The methodology adopted in this present analysis is(More)
The present study is concerned with one of the top ten worst weeds of the world, Mikania micrantha H.B.K., and its growth in a rapidly urbanizing city, Kolkata. The two primary objectives were to assess the impact of this invasive plant on floral diversity as well as its potential for spread into new areas. A quadrat based assessment was conducted to(More)
Andrographis is a medicinally important genus of 26 species native to India, with greatest species diversity occurring in southern India. The present study provides the natural range of eleven species of Andrographis in Andhra Pradesh. Of these, nine species show narrow distributional range and are vulnerable to unsustainable harvesting and land use(More)