Indian Ocean Tropical Cyclones and Climate Change, 2009
Characteristics of Very Severe Cyclonic Storm NARGIS over the Bay of Bengal During 27 April to ... more Characteristics of Very Severe Cyclonic Storm NARGIS over the Bay of Bengal During 27 April to 3 May 2008 Ajit Tyagi, M. Mohapatra, BK Bandyopadhyay, Charan Singh1 and Naresh Kumar Keywords Cyclone Nargis Introduction A very severe cyclonic storm crossed southwest ...
Due to typical tropical climate and congenial ago-climatic conditions of the zone, a large number... more Due to typical tropical climate and congenial ago-climatic conditions of the zone, a large number of fruits, vegetables, orchids, spices and medicinal and aromatic plants are found growing in one or other parts of these countries. Among the fruits, the important ones are: Soursop ( Anona muricata ), Mangosteen - Garcinia mangostana (one of the finest and tastiest tropical fruit of the world), Durian (Durio zibethinus), Avocado ( Persea americana ), Tamarind ( Tamarindus indica ), Rambutan ( Nephelium lappaceum ), Breadfruit ( Artocarpus altilis ), Bael ( Aegle marmelos ), Jack fruit ( Artocarpus heterophyllus ), loquat ( Eriobotrya japonica ), Sapota ( Achras zapota ) etc. Similarly, the vegetables include Curry leaf ( Murraya koenigii ), Drumstick ( Moringa oleifera ), Yam ( Dioscorea alata ), Taro ( Colocasia antiquorum ), Sweet potato ( Ipomoea batatus ), Bamboo ( Bambusa vulgaris ), Tapoica ( Manihot esculenta ), Chekkurmani ( Sauropus andogynus ) and a number of other leafy veg...
A study was conducted for genetic analysis and estimating association of the traits in double hap... more A study was conducted for genetic analysis and estimating association of the traits in double haploid populations of bread wheat (Triticum aestivum L.). These populations were planted at Directorate of Wheat Research, Karnal during rabi season 2008-09 and 2009-10 in augmented design along with five checks in three blocks, wherein all checks were repeated in each block. The genetic variance and correlation coefficients were carried out for assessment of the performance of double haploid lines derived from the cross (Ducula4/2* Brookton) and (Camm/ HD 2329), through six metric traits, viz. plant height, days to heading, days to maturity, tillers per plot, 1000-grain weight and grain yield. Analysis of variance on the basis of F- values, revealed wide variability for most of the traits over the year and pooled. The phenotypic coefficient of variation (PCV) was higher than genotypic coefficient of variation (GCV) for all traits, while high heritability (<60%) coupled with high geneti...
An attempt has been made to explore the possibilities of commercially important by value addition... more An attempt has been made to explore the possibilities of commercially important by value addition underutilized fruits of Andaman and Nicobar. The Andaman and Nicobar Island have a wide variety and diversity of tropical underutilized fruit tree species especially belonging to family Anacardiaceae, Pandanaceae, Myrtaceae, Anonaceae and Combretiaceae. Many of the species belonging to these families can withstand in adverse climatic and edaphic conditions, so could be used for growing in wasteland. These fruits are rich in vitamins, calcium and minerals and have high medicinal properties in comparison to other tropical fruits. These fruits could be processed for making value added products like Jams, jellies, syrup, chutney and pickle. The continuous overexploitation of forest resources resulting in many species has become rare and few endangered, so conservation measures for these species is urgently required.
Nutritional value of lucerne fodder for bovines and its significant role in livestock production ... more Nutritional value of lucerne fodder for bovines and its significant role in livestock production has been well established.
Abiotic Stress-Mediated Sensing and Signaling in Plants: An Omics Perspective, 2018
Aerobic organisms which derive their energy from the reduction of oxygen are susceptible to the d... more Aerobic organisms which derive their energy from the reduction of oxygen are susceptible to the damaging actions of the small amounts of O2−, OH, and H2O2 that inevitably form during the metabolism of oxygen, especially in the reduction of oxygen by the electron transfer system of mitochondria. These three species together with unstable intermediates in the peroxidation of lipids are referred to as reactive oxygen species (ROS). They are formed as a natural by-product of the normal metabolism of oxygen and have important roles in cell signaling and homeostasis. ROS are thought to play a dual role in plant biology and are accumulated by many types of stresses. Some are highly toxic and rapidly detoxified by various cellular enzymatic and nonenzymatic mechanisms, whereas many are involved in various metabolic as well as physiological processes necessary for growth and development of plants. During environmental stress of plants (e.g., UV or heat exposure), ROS levels can increase dramatically. The ROS levels that are too low or too high impair plant growth and development, whereas maintaining ROS levels within the right range promotes plant health. Alterations in ROS levels that are part of the normal function of the plant should not exceed the threshold boundary between redox potentials and cytotoxic or cytostatic levels. Although recent studies have unraveled some of the key issues related to ROS like programmed cell death and cross talk with phytohormones during stress conditions, yet there are some unprecedented mechanisms which need to be expolred.
Indian Ocean Tropical Cyclones and Climate Change, 2009
Characteristics of Very Severe Cyclonic Storm NARGIS over the Bay of Bengal During 27 April to ... more Characteristics of Very Severe Cyclonic Storm NARGIS over the Bay of Bengal During 27 April to 3 May 2008 Ajit Tyagi, M. Mohapatra, BK Bandyopadhyay, Charan Singh1 and Naresh Kumar Keywords Cyclone Nargis Introduction A very severe cyclonic storm crossed southwest ...
Due to typical tropical climate and congenial ago-climatic conditions of the zone, a large number... more Due to typical tropical climate and congenial ago-climatic conditions of the zone, a large number of fruits, vegetables, orchids, spices and medicinal and aromatic plants are found growing in one or other parts of these countries. Among the fruits, the important ones are: Soursop ( Anona muricata ), Mangosteen - Garcinia mangostana (one of the finest and tastiest tropical fruit of the world), Durian (Durio zibethinus), Avocado ( Persea americana ), Tamarind ( Tamarindus indica ), Rambutan ( Nephelium lappaceum ), Breadfruit ( Artocarpus altilis ), Bael ( Aegle marmelos ), Jack fruit ( Artocarpus heterophyllus ), loquat ( Eriobotrya japonica ), Sapota ( Achras zapota ) etc. Similarly, the vegetables include Curry leaf ( Murraya koenigii ), Drumstick ( Moringa oleifera ), Yam ( Dioscorea alata ), Taro ( Colocasia antiquorum ), Sweet potato ( Ipomoea batatus ), Bamboo ( Bambusa vulgaris ), Tapoica ( Manihot esculenta ), Chekkurmani ( Sauropus andogynus ) and a number of other leafy veg...
A study was conducted for genetic analysis and estimating association of the traits in double hap... more A study was conducted for genetic analysis and estimating association of the traits in double haploid populations of bread wheat (Triticum aestivum L.). These populations were planted at Directorate of Wheat Research, Karnal during rabi season 2008-09 and 2009-10 in augmented design along with five checks in three blocks, wherein all checks were repeated in each block. The genetic variance and correlation coefficients were carried out for assessment of the performance of double haploid lines derived from the cross (Ducula4/2* Brookton) and (Camm/ HD 2329), through six metric traits, viz. plant height, days to heading, days to maturity, tillers per plot, 1000-grain weight and grain yield. Analysis of variance on the basis of F- values, revealed wide variability for most of the traits over the year and pooled. The phenotypic coefficient of variation (PCV) was higher than genotypic coefficient of variation (GCV) for all traits, while high heritability (<60%) coupled with high geneti...
An attempt has been made to explore the possibilities of commercially important by value addition... more An attempt has been made to explore the possibilities of commercially important by value addition underutilized fruits of Andaman and Nicobar. The Andaman and Nicobar Island have a wide variety and diversity of tropical underutilized fruit tree species especially belonging to family Anacardiaceae, Pandanaceae, Myrtaceae, Anonaceae and Combretiaceae. Many of the species belonging to these families can withstand in adverse climatic and edaphic conditions, so could be used for growing in wasteland. These fruits are rich in vitamins, calcium and minerals and have high medicinal properties in comparison to other tropical fruits. These fruits could be processed for making value added products like Jams, jellies, syrup, chutney and pickle. The continuous overexploitation of forest resources resulting in many species has become rare and few endangered, so conservation measures for these species is urgently required.
Nutritional value of lucerne fodder for bovines and its significant role in livestock production ... more Nutritional value of lucerne fodder for bovines and its significant role in livestock production has been well established.
Abiotic Stress-Mediated Sensing and Signaling in Plants: An Omics Perspective, 2018
Aerobic organisms which derive their energy from the reduction of oxygen are susceptible to the d... more Aerobic organisms which derive their energy from the reduction of oxygen are susceptible to the damaging actions of the small amounts of O2−, OH, and H2O2 that inevitably form during the metabolism of oxygen, especially in the reduction of oxygen by the electron transfer system of mitochondria. These three species together with unstable intermediates in the peroxidation of lipids are referred to as reactive oxygen species (ROS). They are formed as a natural by-product of the normal metabolism of oxygen and have important roles in cell signaling and homeostasis. ROS are thought to play a dual role in plant biology and are accumulated by many types of stresses. Some are highly toxic and rapidly detoxified by various cellular enzymatic and nonenzymatic mechanisms, whereas many are involved in various metabolic as well as physiological processes necessary for growth and development of plants. During environmental stress of plants (e.g., UV or heat exposure), ROS levels can increase dramatically. The ROS levels that are too low or too high impair plant growth and development, whereas maintaining ROS levels within the right range promotes plant health. Alterations in ROS levels that are part of the normal function of the plant should not exceed the threshold boundary between redox potentials and cytotoxic or cytostatic levels. Although recent studies have unraveled some of the key issues related to ROS like programmed cell death and cross talk with phytohormones during stress conditions, yet there are some unprecedented mechanisms which need to be expolred.
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