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13 result(s) search for keyword(s) 'diversity' 
Refine your searchEcogeographic and Genetic Diversity Analysis of Mango in Nepal / Subedi, A ; Bajracharya, J. ; Regmi, H.N. ; H. B. K. C ; Gupta, S.R. ; B.K. Joshi
Title : Ecogeographic and Genetic Diversity Analysis of Mango in Nepal Material Type: printed text Authors: Subedi, A, Author ; Bajracharya, J., Author ; Regmi, H.N., Author ; H. B. K. C, Author ; Gupta, S.R., Author ; B.K. Joshi, Author Pagination: 66-70 p. Languages : English (eng) Keywords: ccogcographic survey, genetic diversity, landraccs, diversity index Abstract: Mango is one of the important tropical fruits of Nepal ami occurs as a domesticated or ll'ild
entity in the complex of biotic community of the ecosystem. Wide ecological variation and
diverse needs of multi-ethnic comm1mities has enriched the country with genetic 1vealth of
diverse mango varieties and land races. The tropical plain, river gorge areas and sub-tropical
valleys are the regions that are rich in mango diversity. As a result, the global project on
"Strengthening scientific basis of in-situ consen•ation of agricultural biodiversity on-farm,
Nepal componellt" identified mango as a mandatol)' crop and under the project,
ecogeographic sun•ey and genetic di1•ersity was carried to measure the extent of diversity.
Siraha, Saptari, Dhading, Kavre, Parbat. Baglw1g and Dadeldlwra, the districts representing
the Terai and mid-hill ecosystems ll'ere surreyed for mango diversity. Fruit samples of 216
mango trees collected in ecogeographic sun•ey were evaluated for nineteen nwrplwlogical
characters of fruit to understand the genetic relationships. A mnge of \'(/riation e.risted in
varietalfrmit of mango with dijferellf shapes, co/ow; sizes,j7al'fmr (aroma) and taste u·ith 25-
47 coefficiellts of variation and 0.59-0.87 Shannon Weaver index. Principal compm1e11t
analysis of qualitative traits and quallfitative traits of fruits sholl'ed the existence of a
collfinuum diversity of mango in Ne1}(ll with no ecogeograpflic differentiation and qualiwtive
traits were of importance in determining tile groupings and relationships rif mcmgo \'Orieties
under study. The ecogeographic survey findings and genetic di1•ersity results were discussed
relative to the efficient utilization and c:onsen•ation.Link for e-copy: http://elibrary.narc.gov.np/?r=453 Ecogeographic and Genetic Diversity Analysis of Mango in Nepal [printed text] / Subedi, A, Author ; Bajracharya, J., Author ; Regmi, H.N., Author ; H. B. K. C, Author ; Gupta, S.R., Author ; B.K. Joshi, Author . - [s.d.] . - 66-70 p.
Languages : English (eng)
Keywords: ccogcographic survey, genetic diversity, landraccs, diversity index Abstract: Mango is one of the important tropical fruits of Nepal ami occurs as a domesticated or ll'ild
entity in the complex of biotic community of the ecosystem. Wide ecological variation and
diverse needs of multi-ethnic comm1mities has enriched the country with genetic 1vealth of
diverse mango varieties and land races. The tropical plain, river gorge areas and sub-tropical
valleys are the regions that are rich in mango diversity. As a result, the global project on
"Strengthening scientific basis of in-situ consen•ation of agricultural biodiversity on-farm,
Nepal componellt" identified mango as a mandatol)' crop and under the project,
ecogeographic sun•ey and genetic di1•ersity was carried to measure the extent of diversity.
Siraha, Saptari, Dhading, Kavre, Parbat. Baglw1g and Dadeldlwra, the districts representing
the Terai and mid-hill ecosystems ll'ere surreyed for mango diversity. Fruit samples of 216
mango trees collected in ecogeographic sun•ey were evaluated for nineteen nwrplwlogical
characters of fruit to understand the genetic relationships. A mnge of \'(/riation e.risted in
varietalfrmit of mango with dijferellf shapes, co/ow; sizes,j7al'fmr (aroma) and taste u·ith 25-
47 coefficiellts of variation and 0.59-0.87 Shannon Weaver index. Principal compm1e11t
analysis of qualitative traits and quallfitative traits of fruits sholl'ed the existence of a
collfinuum diversity of mango in Ne1}(ll with no ecogeograpflic differentiation and qualiwtive
traits were of importance in determining tile groupings and relationships rif mcmgo \'Orieties
under study. The ecogeographic survey findings and genetic di1•ersity results were discussed
relative to the efficient utilization and c:onsen•ation.Link for e-copy: http://elibrary.narc.gov.np/?r=453 E-copies
http://nkcs.org.np/narc/dl/?r=453URLSocioeconomic and Agroecological Determinants of Conserving Diversity On-farm: The Case of Rice Genetic Resources in Nepal / Gauchan, Devendra in Nepal Agriculture Research Journal, Vol. 6 (2005)
Title : Socioeconomic and Agroecological Determinants of Conserving Diversity On-farm: The Case of Rice Genetic Resources in Nepal Material Type: printed text Authors: Gauchan, Devendra, Author ; Melinda Smale, Author ; Maxted, N., Author Publication Date: 2005 Article on page: 89-98 p Languages : English (eng) Keywords: Diversity indices, dominance, evenness, on-farm conservation, rice diversity, richness Abstract: Conservation of crop genetic resources presents a challenge of identifying specific determinants
driving maintenance of diversity at farm and agroecosystems. The objectives of this study were to
identify socioeconomic, market and agroecological determinants of farmers’ maintenance of rice
diversity at the household level and derive implications for policies in designing on-farm
conservation programs. We assess spatial rice diversity at farm level using household survey
data. A household decision making model is conceptualised using microeconomic theory to assess
and identify factors influencing on-farm rice diversity. The model is then tested econometrically by
using various factors affecting farmers’ variety choice and diversity decisions. The findings show
that household-specific socioeconomic, agroecological and market factors are important in
determining on-farm rice diversity. The significant variables in explaining richness and evenness of
rice diversity include distance to the nearest market, subsistence ratio, modern variety sold, land
types and adult labour working in agriculture. The statistical signs of the factors determining rice
diversity are consistent in explaining the richness, dominance and evenness among rice varieties.
Finally, the study implies that the cost-effective means of promoting and sustaining on-farm
conservation programmes is to target them in market isolated geographic locations of high crop
diversity where farm households have more heterogeneity of agroecological conditions and more
active family adult labour working on-farm.Link for e-copy: http://elibrary.narc.gov.np/?r=67
in Nepal Agriculture Research Journal > Vol. 6 (2005) . - 89-98 p[article] Socioeconomic and Agroecological Determinants of Conserving Diversity On-farm: The Case of Rice Genetic Resources in Nepal [printed text] / Gauchan, Devendra, Author ; Melinda Smale, Author ; Maxted, N., Author . - 2005 . - 89-98 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 6 (2005) . - 89-98 p
Keywords: Diversity indices, dominance, evenness, on-farm conservation, rice diversity, richness Abstract: Conservation of crop genetic resources presents a challenge of identifying specific determinants
driving maintenance of diversity at farm and agroecosystems. The objectives of this study were to
identify socioeconomic, market and agroecological determinants of farmers’ maintenance of rice
diversity at the household level and derive implications for policies in designing on-farm
conservation programs. We assess spatial rice diversity at farm level using household survey
data. A household decision making model is conceptualised using microeconomic theory to assess
and identify factors influencing on-farm rice diversity. The model is then tested econometrically by
using various factors affecting farmers’ variety choice and diversity decisions. The findings show
that household-specific socioeconomic, agroecological and market factors are important in
determining on-farm rice diversity. The significant variables in explaining richness and evenness of
rice diversity include distance to the nearest market, subsistence ratio, modern variety sold, land
types and adult labour working in agriculture. The statistical signs of the factors determining rice
diversity are consistent in explaining the richness, dominance and evenness among rice varieties.
Finally, the study implies that the cost-effective means of promoting and sustaining on-farm
conservation programmes is to target them in market isolated geographic locations of high crop
diversity where farm households have more heterogeneity of agroecological conditions and more
active family adult labour working on-farm.Link for e-copy: http://elibrary.narc.gov.np/?r=67
Title : Conserving plant genetic diversity in protected areas: population management of crop wild relatives Material Type: printed text Authors: Jose Maria Iriondo, Author Publisher: UK : CAB International Publication Date: 2008 Pagination: 212 p. ISBN (or other code): 978-1-84593-282-4 Languages : English (eng) Keywords: Germplasm resources, plant; crops-germplasm resources;Genetic resources conservation; Plant diversity conservation Class number: 639.99 Conserving plant genetic diversity in protected areas: population management of crop wild relatives [printed text] / Jose Maria Iriondo, Author . - UK : CAB International, 2008 . - 212 p.
ISBN : 978-1-84593-282-4
Languages : English (eng)
Keywords: Germplasm resources, plant; crops-germplasm resources;Genetic resources conservation; Plant diversity conservation Class number: 639.99 Copies (1)
Barcode Call number Media type Location Section Status NARC1008199 639.99 IRI-c 2008 Document NARC Library Documents Available
in Proceedigs of the Eighth National Horticulture Seminar on Horticulture Development Towards the Pace of National Economic Growth, Khumaltar, Lalitpur and Kirtipur, Kathmandu, 18-20 March 2013 (5-7 Chaitra 2069) / Nepal Horticulture Society
Title : Genetic Diversity in Nepalese Large Cardamom Gene Pool Based on Rapd Markers Material Type: printed text Authors: Raju Chaudhary, Author ; Niroula, Raj Kumar, Author ; Shrawan Kumar Sah, Author ; Pradip Kumar Yadav, Author ; Bal Krishna Joshi, Author ; Ojha, Bishnu Raj, Author ; Surya Kant Ghimire, Author Pagination: 25-30 p. Languages : English (eng) Keywords: Large cardamom (Amomum subulatum), Churumpha, RAPD, decamcr, genetic diversity Abstract: Large Cardamom (Amomum subulatum Roxb.) is a major cash generating spice crop of Nepal, mainly
confined to the eastern hills of Nepal. Fourteen large cardamom samples collected from Taplejung,
Panchthar and Jlam Districts of Nepal during 2012 were used to evaluate genetic diversity using
RAPD markers. Total of fifty one decamer primers (Operon series) were initially used for the
experiment but only eighteen primers were selected based on nature of polym01phic and
reproducibility for the analysis. Out of 133 loci generated 97.74 % were found to be polymorphic with
number of alleles 1.977±0.013 and number of effective alleles1.409±0.024. Considering a single
population Nei 's genetic diversity over all loci generated was found to be 0.263±0. OJ 2 with Shannon's
information· index 0.416. On UPGMA clustering, two main clusters were obse1,ed that clearly
separate wild cultivars (Churumpha) from commercially grown cultivars. The RAPD markers showed
sufficient polymorphism for genotype discrimination and experimental reproducibility. Incorporation
of molecular approaches over conventional method of genetic diversity assessment is. very much
effective in pinpointing the potential genetic diversity for cardamom improvement.Link for e-copy: http://elibrary.narc.gov.np/?r=1543 Genetic Diversity in Nepalese Large Cardamom Gene Pool Based on Rapd Markers [printed text] / Raju Chaudhary, Author ; Niroula, Raj Kumar, Author ; Shrawan Kumar Sah, Author ; Pradip Kumar Yadav, Author ; Bal Krishna Joshi, Author ; Ojha, Bishnu Raj, Author ; Surya Kant Ghimire, Author . - [s.d.] . - 25-30 p.
in Proceedigs of the Eighth National Horticulture Seminar on Horticulture Development Towards the Pace of National Economic Growth, Khumaltar, Lalitpur and Kirtipur, Kathmandu, 18-20 March 2013 (5-7 Chaitra 2069) / Nepal Horticulture Society
Languages : English (eng)
Keywords: Large cardamom (Amomum subulatum), Churumpha, RAPD, decamcr, genetic diversity Abstract: Large Cardamom (Amomum subulatum Roxb.) is a major cash generating spice crop of Nepal, mainly
confined to the eastern hills of Nepal. Fourteen large cardamom samples collected from Taplejung,
Panchthar and Jlam Districts of Nepal during 2012 were used to evaluate genetic diversity using
RAPD markers. Total of fifty one decamer primers (Operon series) were initially used for the
experiment but only eighteen primers were selected based on nature of polym01phic and
reproducibility for the analysis. Out of 133 loci generated 97.74 % were found to be polymorphic with
number of alleles 1.977±0.013 and number of effective alleles1.409±0.024. Considering a single
population Nei 's genetic diversity over all loci generated was found to be 0.263±0. OJ 2 with Shannon's
information· index 0.416. On UPGMA clustering, two main clusters were obse1,ed that clearly
separate wild cultivars (Churumpha) from commercially grown cultivars. The RAPD markers showed
sufficient polymorphism for genotype discrimination and experimental reproducibility. Incorporation
of molecular approaches over conventional method of genetic diversity assessment is. very much
effective in pinpointing the potential genetic diversity for cardamom improvement.Link for e-copy: http://elibrary.narc.gov.np/?r=1543 E-copies
http://nkcs.org.np/narc/dl/?r=1543URL
Title : Implementation of the convention on biological diversity: a retrospective analysis in the HKH countries Material Type: printed text Authors: Desai, Bharat H. ; , Publisher: Kathmandu : ICIMOD Publication Date: 2011 Pagination: 33 Keywords: Sustainability; Environment; Biological diversity Implementation of the convention on biological diversity: a retrospective analysis in the HKH countries [printed text] / Desai, Bharat H. ; , . - Kathmandu : ICIMOD, 2011 . - 33.
Keywords: Sustainability; Environment; Biological diversity PermalinkPermalinkPermalinkPermalinkPermalinkPermalinkPermalinkPermalink
