kottapalli s. Rao | University of Delhi (original) (raw)

Papers by kottapalli s. Rao

Seed Science and Technology, 2012

Rheum emodi Wall. ex Meissn (Polygonaceae) is a plant of Garhwal Himalaya reported to be endanger... more Rheum emodi Wall. ex Meissn (Polygonaceae) is a plant of Garhwal Himalaya reported to be endangered due to over-exploitation for medicinal use and poor seed germination and seedling survival in nature. To determine the optimum germination conditions for this Himalayan medicinal herb, seeds were hot-water pre-treated (80°Cthen cooling overnight), cold-water pre-treated (10°C left overnight) or placed in a range of gibberellic acid (GA3) concentrations (0.3, 0.6, 0.9 μM) for 24 h. Control seeds were untreated. The seeds were subjected to two light regimes (16:8 h alternate light:dark and continuous dark) at three temperatures (15, 20, 25°C). The highest germination (83.3%) occurred following hot-water pre-treatment and incubation under 16:8 h alternate light:dark conditions at 15°C, with a reduced mean germination time (MGT) of 8 d. The second highest germination (80%) was recorded under dark conditions at 15°C with cold-water pre-treatment with MGT of 11.3 d. The present study indicates a low germination temperature (≥15°C), which is the normal temperature in the study area, and light for improved seed germination of R. emodi. Farmers can also use hot-water pre-treatment prior to sowingthe seeds.

An academic directory and search engine.

Proceedings of the National Academy of Sciences, India Section B: Biological Sciences

Advances in Medical Diagnosis, Treatment, and Care, 2020

Ethnobotanical and economic studies endorse Allium stracheyi Baker, of the Alliaceae family, for ... more Ethnobotanical and economic studies endorse Allium stracheyi Baker, of the Alliaceae family, for future food and health security. The species is important to the socio-cultural, spiritual, and medicinal lives of the indigenous Himalayan people and those in the surrounding urban and peri-urban areas. The species is used by the indigenous Bhotiya people as a flavoring, spice/condiment (Jambu Faran), and a remedy for colds/coughs, jaundice, stomachaches, and various other ailments. A perennial, medicinal, and aromatic plant (MAP) species, A. stracheyi is harvested two or three times annually and is categorized as an endemic and endangered species. It has a high value and represents an important cultural element in the lives of indigenous Bhotiya folk living in the mountains of Central Himalaya, India. Among medicinal and aromatic plants, A. stracheyi is an economic indicator of the plant-based economy and tradition of Bhotiya ethnic groups in the Niti and Mana Valleys of Uttarakhand, I...

Proceedings / Indian Academy of Sciences, 1988

Two bamboo species,Neohouzeua dulloa A Camus andDendrocalamus hamiltonii Nees and Arn. show plast... more Two bamboo species,Neohouzeua dulloa A Camus andDendrocalamus hamiltonii Nees and Arn. show plasticity in architecture, biomass and nutrient allocation patterns over a successional gradient of up to 60 yr for the former and 25 yr for the latter. However, optimal biomass accumulation rate was attained in a 15 yr old fallow for both species. Maximum elongation and thickness of the

Protoplasma, 2019

Owing to its essentiality for cellular metabolism, phosphate (PO 4 3−) plays a pivotal role in ec... more Owing to its essentiality for cellular metabolism, phosphate (PO 4 3−) plays a pivotal role in ecosystem dynamics. Frequent testing of phosphate levels is necessary to monitor ecosystem health. Present investigations were aimed to identify the key factors that are essential for proper quantification of PO 4 3−. Primarily, H + levels played a critical role in the development of molybdenum blue complex by ammonium molybdate and PO 4 3− with ascorbic acid as a reductant. Molybdenum blue complex formed in the presence of 8 to 12 mmol of H + in 3 ml reaction mixture remained stable even after 72 h. Of different concentrations of ammonium molybdate and ascorbic acid tested, best molybdenum blue complex was formed when their concentrations were 24.3 and 5.68 μmol, respectively. More or less similar intensity of molybdenum blue complex (due to reduction of phosphomolybdic acid and not molybdic acid) was formed in the presence of H + at levels ranging from 8 to 10 mmol in 3 ml reaction mixture. Our findings unequivocally demonstrated that (i) the reaction mixture containing 3% ammonium molybdate, 0.1% ascorbic acid and 5 M H 2 SO 4 in the ratio of 1:1:1 is ideal for PO 4 3− quantification; (ii) antimony (Sb) significantly curbs the formation of molybdenum blue under these ideal conditions; (iii) this fine-tuned protocol for PO 4 3− quantification could be extended without any problem for determining the level of PO 4 3− both in plant as well as soil samples; and (iv) Azotobacter possesses potential to enhance levels of total PO 4 3− in leaves and grains and soluble/active PO 4 3− in rhizosphere soils of wheat.

Sustainable Forestry, 2018

Broad leaved forests continuously have some asynchronous and localized disturbance events.Tree fa... more Broad leaved forests continuously have some asynchronous and localized disturbance events.Tree fall gaps are the dominant form of such disturbances in these forests. Moist temperate forests dominated by Quercus leucotricophora in Garhwal were investigated for study. Ten random transect belts were established in a mixed broadleaved forest patch. The forest comprised of gaps, created by various natural processes. Gaps varied in size ranging from 48 to 589 m2. Microclimatic and edaphic variables of canopy gap and understorey areas were recorded to assess the parameters that influence gap phase regeneration. Forests of the studyarea comprised of gaps that varied in size and shape. Light intensity, soil moisture and soil temperature were prime micro-climatic variables influencing species recruitment in gaps.Species assemblage was recorded higher from gaps than forest understorey (20 and 17 tree species, respectively). Overall recruitment of tree species in understorey and canopy gaps was...

Journal of Human Ecology, 2008

The role of socio-cultural values in biodiversity conservation is an integral part of the people ... more The role of socio-cultural values in biodiversity conservation is an integral part of the people living in Uttarakhand, Central Himalaya, India. Still, there exist many rules and regulations set up by earlier generations for the conservation and management of the resources. To a certain extent the present generation is going through the same philosophy following the ideas set up by their ancestors for conservation and management of the resources that would lead to a healthy environment. Due to a variety of reasons the area under traditional crops is declining very fast in the region but undoubtedly many of the crop varieties are still conserved in the region because of their socio-cultural and religious values. The traditional festival called "Harela" is one the festivals in Uttarakhand which encourages people to conserve and manage their traditional crop diversity. These kinds of activities of the people need to be emphasized in detail, keeping in view the rapid socioeconomic and cultural changes taking place in the societies.

Journal of Tropical Forest Science

RAO, K.S. & SAXENA, K.G. 1995. Kesan kegunaan tanah pada pertumbuhan semula Dendrocalamus hamilto... more RAO, K.S. & SAXENA, K.G. 1995. Kesan kegunaan tanah pada pertumbuhan semula Dendrocalamus hamiltonii semasa tahap-tahap awal sekunder yang berturut-turut di timur laut India. Pertumbuhan semula buluh meluruh tropika, Dendrocalamus hamiltonii, dikaji berikutan kitaran 5, 10, 15 dan 20 tahun pertanian pindah (nama tempatan jhum). Merumput dilakukan pada buluh dan pokok-pokok bukan tanaman dua hingga tiga kali. Semasa tempoh tanaman bergantung pada keamatan rumpai. Dinamik biojisim bawah tanah buluh menunjukkan penurunan drastik semasa satu tahun pertanian pindah dan satu tahun pertumbuhan semula biojisim yang lebih rendah dalam organ-organ buluh di bawah tanah berikutan kitaran pertanian pindah yang lebih pendek mungkin ialah penanda tahap teruk gangguan. Kesimpulannya, gangguan- gangguan yang teruk yang berlaku pada hari ini mengancam adanya sumber-sumber buluh pada masa hadapan dan mewajarkan amalan-amalan pengurusan yang sesuai.

Integrated natural resources management: linking productivity, the environment and development

Introduction Socio-ecological Setting of the Study Area The Present Approach People's perceptions... more Introduction Socio-ecological Setting of the Study Area The Present Approach People's perceptions Enhancement of people's perceptions and project implementation Monitoring On-site impacts Off-site benefits Discussion Conclusion Responses to this Article Acknowledgments Literature Cited

Journal of Mountain Science, 2005

... one can assess the subsistence economy transition due to market and lifestyle changes. ... Th... more ... one can assess the subsistence economy transition due to market and lifestyle changes. ... The implementation of conservative land use policy for the region in 1982 resulted in ... Indian Himalaya where agriculture, animal husbandry, forest including community land and domestic ...

Landscape Online, 2010

This study aims at presenting a conceptual model for landscape management in the Himalayan region... more This study aims at presenting a conceptual model for landscape management in the Himalayan region of India, using quantitative/mathematical approach. Keeping in view the requirement, (based on fifteen years empirical field work in the Himalayan region and as well as literature survey) the MODAM (Multiple Objectives Decision Support Tools for Landscape Management) model along with linear programming approach was adopted with a view to presenting additional methodological perspectives on interdisciplinary landscape research. The work has stemmed out from the original research contribution, which tries to integrate interdisciplinary research planning with landscape management related research in the Himalayan region. This biodiversity hotspot has relatively high complexity in terms of sustainable socioeconomic development vis a vis conservation and management of the resources. The concepts and insights presented in this article will provide the basis for a discussion, on decision-makin...

Renewable and Sustainable Energy Reviews, 2012

Most developing countries such as India use biomass as a primary source of energy especially in d... more Most developing countries such as India use biomass as a primary source of energy especially in domestic sectors in the rural area. The increasing population exerts more pressure on the biomass resource thereby initiating energy crisis in the region. The issue of shortage of fuelwood in the remote mountain regions is increasing since the alternative energy resources have limitations either due to poor economic condition of the people, complex technology involved or being inaccessible due to remoteness. It is also seen that the use of traditional biomass as a source of energy will improve the livelihood conditions of the people and it will give ecological benefits to the region if other associated factors like health, gender etc. are taken care of and thus the planners aim to focus on sustaining the natural fuelwood resources. The present paper attempts to predict the future fuelwood demand based on the present consumption pattern in the upland villages of Indian Himalaya. Major consumption characteristics such as fuelwood consumption at different altitude and per capita fuelwood consumption (PCFC) are studied. Population dynamics model is postulated in order to assess future population vs. fuelwood consumption scenario, thereby projecting the future population and the future fuelwood demand in the region.

Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology, 2013

Outlook on Agriculture, 2011

Women in Central Himalaya have always played a significant role in managing and operating most ho... more Women in Central Himalaya have always played a significant role in managing and operating most household and agricultural activities. They are considered to be the backbone of hill agriculture. However, in recent years, environmental degradation, poor resource management and increased migration of men to the plains have worsened livelihood options and added to the workload of women in the Himalaya. In assessing the hardships and problems faced by the hill/mountain women, it was recognized that the women had to develop their capacity and skills in agro-ecotechnology if they were to improve their livelihoods as well as the conservation and management of natural resources. A total of 15 on-site training and capacity building/skill development programmes were conducted in three different ecological zones, training 635 women farmers. The overall goal was to induce the women farmers to adopt simple agro-ecotechnologies as viable options for enhancing their livelihoods. This study offers t...

Journal of the Indian Society of Remote Sensing, 1996

... Application of GIS for Land-Use/Land-Cover Change Analysis in a Mountainous Terrain 201 respo... more ... Application of GIS for Land-Use/Land-Cover Change Analysis in a Mountainous Terrain 201 responsibility of managing them and not alienated. Good environmental management demands that each settlement has a clearly defined environment to protect, care and use. ...

Journal of Herbs, Spices & Medicinal Plants, 1997

... The authors are grateful lo the Director, GB Pant Institute for encouragement and facilities,... more ... The authors are grateful lo the Director, GB Pant Institute for encouragement and facilities, and Drs. ... Indeed, recognition of India as a “mega-diversity&quot; country in Asia and as one of the ten largest forested areas of the world derives largely from the Himalayan Mountain region. ...

Journal of Herbs, Spices & Medicinal Plants, 2001

... Saussurea costus 22 7 Page 13. TABLE 3. Labor related to cultivation ofmedicinalplants in Nan... more ... Saussurea costus 22 7 Page 13. TABLE 3. Labor related to cultivation ofmedicinalplants in Nanda DeviBiosphere Reserve. Medicinal Propagules Post-Total Annual species ... Planting Weeding Harvesting harvest input output 1 ----- ...

Journal of Environmental Management, 2002

The success of conserving biological resources in any Biosphere Reserve or protected area depends... more The success of conserving biological resources in any Biosphere Reserve or protected area depends on the extent of support and positive attitudes and perceptions of local people have towards such establishments. Ignoring the dependence of the local people for their subsistence needs on resources of such areas leads to conflicts between protected area managers and the local inhabitants. Crop yield losses and livestock depredation were serious problems observed in most buffer zone villages of Nanda Devi Biosphere Reserve. In the present study 10 villages situated in the buffer zone of Nanada Devi Biosphere Reserve (1612 km2 area) in Chamoli district of Uttaranchal, India were studied during 1996-97 using a questionnaire survey of each household (419 = households; 2253 = total population in 1991; 273 ha = cultivated area). Estimates of crop yield losses were made using paired plots technique in four representative villages for each crop species. The magnitude of crop yield losses varied significantly with the distance of agricultural field from forest boundary. The total crop yield losses were high for wheat and potato in all the villages. The spatial distribution of total crop yield losses in any village indicated that they were highest in the area near to forest and least in the area near to village for all crops. Losses from areas near to forest contributed to more than 50% of total losses for each crop in all villages. However, in Lata, Peng and Tolma villages, the losses are high for kidney bean and chemmi (local variety of kidney bean) which varied between 18.5% to 30% of total losses in those villages. Potato alone represents 43.6% of total crop yield loss due to wildlife in Dronagiri village in monetary terms. Among the crops, the monetary value of yield losses are least for amaranth and highest for kidney bean. The projected total value of crop yield losses due to wildlife damage for buffer zone villages located in Garhwal Himalaya is about Rs. 538,620 (US$ 15,389). Besides food grains, horticultural crops i.e. apple, also suffered maximum damage. Major wildlife agents responsible for crop damage were wild boar, bear, porcupine, monkey, musk deer and partridge (chokor). Monkey and wild boar alone accounted for about 50% to 60% of total crop damage in the study villages. Goat and sheep are the major livestock killed by leopard. The total value of livestock losses at prevailing market rates is about Rs. 1,024,520 (US$ 29,272) in the study villages. Due to existing conservation policies and laxity in implementation of preventive measures, the problems for local inhabitants are increasing. Potential solutions discussed emphasize the need to undertake suitable and appropriate protective measures to minimize the crop losses. Change in cropping and crop composition, particularly cultivation of medicinal plants (high value low volume crops), were also suggested. Besides, fair and quick disbursement of compensation for crop loss and livestock killing need to be adopted. Local people of the buffer zone area already have a negative attitude towards park/reserve establishment due to socio-political changes inducing major economic losses and this attitude may lead to clashes and confrontations if proper ameliorative measures are not taken immediately.