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Author Madan Raj Bhatta |
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Refine your searchAgro-morphological characterization of Nepalese Rice (Oryza sativa) L. Landraces / Krishna Hari Ghimire
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. I / Giri, Y.P.
Title : Agro-morphological characterization of Nepalese Rice (Oryza sativa) L. Landraces Material Type: printed text Authors: Krishna Hari Ghimire ; Mukunda Bhattarai ; Bal Krishna Joshi ; Madan Raj Bhatta, Author Pagination: 36-42 p. Languages : English (eng) Keywords: rice ; landrace accession diversity traits Abstract: Nepal is considered one of the centers of diversity of Rice (Oryza sativa L.). A total of 1137
accessions of rice were characterized during 2010, 2011 and 2012 at National Agriculhire
Genetic Resources Centre (NAGRC), Khumaltar, Lalitpur, Nepal. Eight quantitative and 19
qualitative traits were recorded using rice descriptors Shannon-Weaver diversity indices (H')
was 0.92, 0.90, 0.90, 0.89, 0.86, 0.90, 0.88, 0.88, 0.67, 0.67 , 0.54, 0.69, 0.57, 0.55 , 0.74, 0.84,
0.85, 0.80 and 0.66 for days to head ing and maturity, plant height, panicle length, ligule
length, leaf length and width, grain length a11d width, blade pubescence, basal leaf sheath
color, flag leaf angle, culm angle, internode color, panicle exertion, shattering, awn color,
apiculus color and spikelet sterility respectively that revealed there is a great diversity in
Nepalese rice landraces. To exp lain 60% of the total variation, access ions were clustered in 36
clusters based on Gower's distance (quantitative and qualitat ive traits) and in 8 clusters only
based on Eucli dean's distance (quantitative traits). Rice landraces Seto marsi from Kaski,
Pakhe and Darmali from Lamjung, Anga and Jarneli from Rasuwa, Anadi from
Sindhupalchok and Jumli dhan and Kalo marsi from Jumla were found superior based on
preliminary evaluation of important traits yie ld, disease, grain texture and maturity and
considered to be important in crop improvement.Link for e-copy: http://elibrary.narc.gov.np/?r=858 Agro-morphological characterization of Nepalese Rice (Oryza sativa) L. Landraces [printed text] / Krishna Hari Ghimire ; Mukunda Bhattarai ; Bal Krishna Joshi ; Madan Raj Bhatta, Author . - [s.d.] . - 36-42 p.
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. I / Giri, Y.P.
Languages : English (eng)
Keywords: rice ; landrace accession diversity traits Abstract: Nepal is considered one of the centers of diversity of Rice (Oryza sativa L.). A total of 1137
accessions of rice were characterized during 2010, 2011 and 2012 at National Agriculhire
Genetic Resources Centre (NAGRC), Khumaltar, Lalitpur, Nepal. Eight quantitative and 19
qualitative traits were recorded using rice descriptors Shannon-Weaver diversity indices (H')
was 0.92, 0.90, 0.90, 0.89, 0.86, 0.90, 0.88, 0.88, 0.67, 0.67 , 0.54, 0.69, 0.57, 0.55 , 0.74, 0.84,
0.85, 0.80 and 0.66 for days to head ing and maturity, plant height, panicle length, ligule
length, leaf length and width, grain length a11d width, blade pubescence, basal leaf sheath
color, flag leaf angle, culm angle, internode color, panicle exertion, shattering, awn color,
apiculus color and spikelet sterility respectively that revealed there is a great diversity in
Nepalese rice landraces. To exp lain 60% of the total variation, access ions were clustered in 36
clusters based on Gower's distance (quantitative and qualitat ive traits) and in 8 clusters only
based on Eucli dean's distance (quantitative traits). Rice landraces Seto marsi from Kaski,
Pakhe and Darmali from Lamjung, Anga and Jarneli from Rasuwa, Anadi from
Sindhupalchok and Jumli dhan and Kalo marsi from Jumla were found superior based on
preliminary evaluation of important traits yie ld, disease, grain texture and maturity and
considered to be important in crop improvement.Link for e-copy: http://elibrary.narc.gov.np/?r=858 E-copies
http://nkcs.org.np/narc/dl/?r=858URLAlleviating Rural Poverty through Participatory Wheat Variety Section / Madan Raj Bhatta in Nepal Agriculture Research Journal, Vol.11 (2011)
Title : Alleviating Rural Poverty through Participatory Wheat Variety Section Material Type: printed text Authors: Madan Raj Bhatta, Author ; Ram c. Sharma,, Author Publication Date: 2011 Article on page: 1-10p. Languages : English (eng) Keywords: Farmers empowerment, Participatory varietal selection, Poverty alleviation, Wheat Link for e-copy: http://elibrary.narc.gov.np/?r=1186
in Nepal Agriculture Research Journal > Vol.11 (2011) . - 1-10p.[article] Alleviating Rural Poverty through Participatory Wheat Variety Section [printed text] / Madan Raj Bhatta, Author ; Ram c. Sharma,, Author . - 2011 . - 1-10p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol.11 (2011) . - 1-10p.
Keywords: Farmers empowerment, Participatory varietal selection, Poverty alleviation, Wheat Link for e-copy: http://elibrary.narc.gov.np/?r=1186
Title : Comparative Analysis of Grain Yield and its Components under Optimal and Heat Stressed Environments Material Type: printed text Authors: Madan Raj Bhatta, Author ; Guillermo Oritz-Ferrara, Author ; Ram c. Sharma,, Author Publication Date: 2010 Article on page: 1-10p. Languages : English (eng) Keywords: Eastern Gangetic plains, Genetic stability, Wheat Link for e-copy: http://elibrary.narc.gov.np/?r=1180
in Nepal Agriculture Research Journal > Vol.10 (2010) . - 1-10p.[article] Comparative Analysis of Grain Yield and its Components under Optimal and Heat Stressed Environments [printed text] / Madan Raj Bhatta, Author ; Guillermo Oritz-Ferrara, Author ; Ram c. Sharma,, Author . - 2010 . - 1-10p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol.10 (2010) . - 1-10p.
Keywords: Eastern Gangetic plains, Genetic stability, Wheat Link for e-copy: http://elibrary.narc.gov.np/?r=1180
in Proceedings of the research papers presented at Special Session Marker Assisted Breeding during Working Group Meeting on Plant Breeding and Genetics from 24-25 April 2012, Khumaltar, Lalitpur, Nepal / Madan Raj Bhatta
Title : Evaluation of Nepalese rice germ plasm for blast resistance at Khumaltar, Lalitpur, Nepal. Material Type: printed text Authors: Madan Raj Bhatta, Editor ; Resham B Amgai, Editor ; Pantha, Sumitra, Author ; Khatiwada, Shambhu P., Author Publisher: Lalitpur : Nepal Agriculture Research Council (NARC) Publication Date: 2012 Pagination: 6-10 p. Languages : English (eng) Keywords: lesion; severity; incidence; resistant; susceptible; Abstract: Rice diseases are the major problem for rice production and blast is one of them. Development of the resistance varieties instead of using chemical and botanicals to treat the rice blast disease in field is most important in Nepalese context. Therefore, identification of resistance rice accessions from Nepalese rice germplasrn collection is very important for development of blast resistance rice varieties. One hundred and forty four Nepalese rice landraces were screened for their response on blast pathogen in natural condition at Khumaltar, Lalitpur, Nepal. Blast lesion type, disease severity, disease incidence and disease damage were recorded on 25 days old rice seedling. Local rice varieties Jumli Marshi and Masuli were used as susceptible check whereas Sabitri was used as resistant check. One hundred and nine rice landraces showed resistance reaction with blast. Similarly, sixty four rice landraces showed no blast disease symptom during seedling stage. Variation on origin of rice landraces may account for this differential reaction in blast disease development at seedling stage.
Link for e-copy: http://elibrary.narc.gov.np/?r=1482 Evaluation of Nepalese rice germ plasm for blast resistance at Khumaltar, Lalitpur, Nepal. [printed text] / Madan Raj Bhatta, Editor ; Resham B Amgai, Editor ; Pantha, Sumitra, Author ; Khatiwada, Shambhu P., Author . - Lalitpur : Nepal Agriculture Research Council (NARC), 2012 . - 6-10 p.
in Proceedings of the research papers presented at Special Session Marker Assisted Breeding during Working Group Meeting on Plant Breeding and Genetics from 24-25 April 2012, Khumaltar, Lalitpur, Nepal / Madan Raj Bhatta
Languages : English (eng)
Keywords: lesion; severity; incidence; resistant; susceptible; Abstract: Rice diseases are the major problem for rice production and blast is one of them. Development of the resistance varieties instead of using chemical and botanicals to treat the rice blast disease in field is most important in Nepalese context. Therefore, identification of resistance rice accessions from Nepalese rice germplasrn collection is very important for development of blast resistance rice varieties. One hundred and forty four Nepalese rice landraces were screened for their response on blast pathogen in natural condition at Khumaltar, Lalitpur, Nepal. Blast lesion type, disease severity, disease incidence and disease damage were recorded on 25 days old rice seedling. Local rice varieties Jumli Marshi and Masuli were used as susceptible check whereas Sabitri was used as resistant check. One hundred and nine rice landraces showed resistance reaction with blast. Similarly, sixty four rice landraces showed no blast disease symptom during seedling stage. Variation on origin of rice landraces may account for this differential reaction in blast disease development at seedling stage.
Link for e-copy: http://elibrary.narc.gov.np/?r=1482 E-copies
http://nkcs.org.np/narc/dl/?r=1482URL
in Proceedings of the research papers presented at Special Session Marker Assisted Breeding during Working Group Meeting on Plant Breeding and Genetics from 24-25 April 2012, Khumaltar, Lalitpur, Nepal / Madan Raj Bhatta
Title : Identification of flood tolerant genes Sub lA and SNORKEL from Nepalese rice gene pool. Material Type: printed text Authors: Madan Raj Bhatta, Editor ; Resham B Amgai, Editor ; Pantha, Sumitra, Author ; Niroula, Raj.K, Author ; Sah, Bindeshwar P., Author ; Bishal G. Tarnang, Author ; Hamal, Shreya S., Author ; Ojha, Bishnu R., Author ; Surya K. Ghimire, Author Publisher: Lalitpur : Nepal Agriculture Research Council (NARC) Publication Date: 2012 Pagination: 23-30 p. Languages : English (eng) Keywords: 'elongation', 'hypoxia', 'SublA', 'flooding', 'SNORKEL' Abstract: Flooding is a notorious environmental stresses that limits the rice production in Asia significantly. Rice has a unique capacity to withstand the period of flooding environment through the activation of coordinated regulatory efforts at morphological, anatomical, biochemical and molecular level. Three hundred and thirteen diverse rice collections including selected landraces from Nepal were completely submerged for 14 days for this study. Rice accessions had diverse response to submergence with survival ity ranging from 0 to 100 % and differential elongation growth response. Presence of Sub 1 A-1 and SNORKEL genes were then monitored in the tolerant landraces. Four landraces; Bhaatsaar, Kariyaparewa pakha, Sauthari and Karangi and 2 landraces; NPGR 3501 and NPGR 3503 showed better response than FRl 3A and Kalamon 113 respectively. However, Kariyaparewa pakha and Sauthari were found lacking the presence of Sub 1 A-1 allele. In addition, eight landraces with Sub I A- I allele were found intolerant to submergence. However, the SPAD reading showed that FR 13A had the highest chlorophyll retention capacity. Thus, the detail morpho-physiological and molecular analysis showed that both the tolerant and intolerant landraces possessed the SublA-1 allele and they showed both escape and quiescence strategy to cope the flooding. Therefore, SublA-1 allele is not the only ones responsible for tolerance but there is the participation of other stress responsive factors.
Link for e-copy: http://elibrary.narc.gov.np/?r=1489 Identification of flood tolerant genes Sub lA and SNORKEL from Nepalese rice gene pool. [printed text] / Madan Raj Bhatta, Editor ; Resham B Amgai, Editor ; Pantha, Sumitra, Author ; Niroula, Raj.K, Author ; Sah, Bindeshwar P., Author ; Bishal G. Tarnang, Author ; Hamal, Shreya S., Author ; Ojha, Bishnu R., Author ; Surya K. Ghimire, Author . - Lalitpur : Nepal Agriculture Research Council (NARC), 2012 . - 23-30 p.
in Proceedings of the research papers presented at Special Session Marker Assisted Breeding during Working Group Meeting on Plant Breeding and Genetics from 24-25 April 2012, Khumaltar, Lalitpur, Nepal / Madan Raj Bhatta
Languages : English (eng)
Keywords: 'elongation', 'hypoxia', 'SublA', 'flooding', 'SNORKEL' Abstract: Flooding is a notorious environmental stresses that limits the rice production in Asia significantly. Rice has a unique capacity to withstand the period of flooding environment through the activation of coordinated regulatory efforts at morphological, anatomical, biochemical and molecular level. Three hundred and thirteen diverse rice collections including selected landraces from Nepal were completely submerged for 14 days for this study. Rice accessions had diverse response to submergence with survival ity ranging from 0 to 100 % and differential elongation growth response. Presence of Sub 1 A-1 and SNORKEL genes were then monitored in the tolerant landraces. Four landraces; Bhaatsaar, Kariyaparewa pakha, Sauthari and Karangi and 2 landraces; NPGR 3501 and NPGR 3503 showed better response than FRl 3A and Kalamon 113 respectively. However, Kariyaparewa pakha and Sauthari were found lacking the presence of Sub 1 A-1 allele. In addition, eight landraces with Sub I A- I allele were found intolerant to submergence. However, the SPAD reading showed that FR 13A had the highest chlorophyll retention capacity. Thus, the detail morpho-physiological and molecular analysis showed that both the tolerant and intolerant landraces possessed the SublA-1 allele and they showed both escape and quiescence strategy to cope the flooding. Therefore, SublA-1 allele is not the only ones responsible for tolerance but there is the participation of other stress responsive factors.
Link for e-copy: http://elibrary.narc.gov.np/?r=1489 E-copies
http://nkcs.org.np/narc/dl/?r=1489URL
