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Sheikh, Nilofer
- Synthetic Aperture Sonar Image of Seafloor
Abstract Views :251 |
PDF Views:83
Authors
Saju Varghese
1,
A. Anil Kumar
1,
G. Nagendran
1,
V. Balachandrudu
1,
Nilofer Sheikh
1,
K. G. Mohan
1,
Kailash Singh
1,
B. Gopakumar
1,
Rajesh Joshi
1,
R. Rajasekhar
1
Affiliations
1 Marine & Coastal Survey Division, Geological Survey of India, Kolkata, IN
1 Marine & Coastal Survey Division, Geological Survey of India, Kolkata, IN
Source
Current Science, Vol 113, No 03 (2017), Pagination: 385-385Abstract
Synthetic Aperture Sonar (SAS), modern technology for very high resolution seafloor mapping, when towed at 70-120 m above the seafloor generates high-quality backscatter image of the same with constant resolution of 40 cm x 40 cm. Research Vessel (RV) Samudra Ratnakar of the Geological Survey of India is equipped with Synthetic Aperture Mapping Sonar, SAMS DT-6000 (make: IXblue, France), the only one of its kind equipment in the world for civilian research purpose.Full Text
- Morphology of Flower, Pollen and Orbicules of Meghalayan Dioscorea L. (Dioscoreaceae), North-East India:A Pivotal Taxon in the Evolution of Monocot
Abstract Views :240 |
PDF Views:2
Authors
Affiliations
1 Department of Botany, North Eastern Hill University, Shillong (Meghalaya), IN
1 Department of Botany, North Eastern Hill University, Shillong (Meghalaya), IN
Source
Asian Journal of Bio Science, Vol 12, No 2 (2017), Pagination: 223-232Abstract
Flowers, pollen and orbicules morphology is an important source of information for systematic and evolutionary studies among different species, genera and families level. In the present study the floral, pollen and orbicules morphology of 80 samples of the genus Dioscorea L. representing 8 species native to Meghalaya were studied. Trichopus and Tacca, the allied genera with Burmannia of Burmanniaceae, nearest family of Dioscoreaceae were selected as an outgroup for the present study. Variation in floral, pollen and orbicules characters were observed and 62 descriptors or traits were selected for morphometric analysis. Pollen of Dioscorea is monosulcate or bisulcate with perporate or microrecticulate sexine sculptures. Orbicules were mostly spherical with smooth surface.Keywords
Floral Morphology, Pollen Aperature, Sexine Ornamentation, Orbicule Morphology, Morphometric Analysis.
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