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7 result(s) search for keyword(s) 'Oryza'
Morphological Characterization and use of rice (oryza sativa L.) Germplasm in Nepal / Upadhyay, M.P.
in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.
Title : Morphological Characterization and use of rice (oryza sativa L.) Germplasm in Nepal Material Type: printed text Authors: Upadhyay, M.P., Editor ; SR Gupta, Editor ; R.B Yadav, Author Publisher: Hardinath, Janakpur : National Rice Research Programme Publication Date: 2010 Pagination: 102-114 p. Keywords: Rice landraces ; morphological traits oryza and variability Abstract: The genetic seed house at Agriculture Botany Division conserved 2987 accessions of rice germplasm. Among them a total of 198
accessions of rice germplas)u were characterized for morpho agronomic traits using IPGRI/IR.RI descriptors at National Rice
Research Programme, Hardinath, Dhanusha during 2004/05 and 2005/06. Five quantitative and twelve qualitative traits were
recorded to assess the diversity in agro morphological traits. A range of variability was observed among the accessions of rice
gemplasm.Variability range for number of tillers per hill was 2-27, plant height 40-150cm and maturity 104~151 days. Seven
varieties have been developed and released for commercial cultivation using local rice landraces. The examined gemplasm of rice
have high variability for agro morphological traits which can be used in crop improvement programme. Characterization,
conservation and utilization of such valuable resources would provide a sustainable basis for rice improvement in future.Link for e-copy: http://elibrary.narc.gov.np/?r=1007 Morphological Characterization and use of rice (oryza sativa L.) Germplasm in Nepal [printed text] / Upadhyay, M.P., Editor ; SR Gupta, Editor ; R.B Yadav, Author . - Hardinath, Janakpur : National Rice Research Programme, 2010 . - 102-114 p.
in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.
Keywords: Rice landraces ; morphological traits oryza and variability Abstract: The genetic seed house at Agriculture Botany Division conserved 2987 accessions of rice germplasm. Among them a total of 198
accessions of rice germplas)u were characterized for morpho agronomic traits using IPGRI/IR.RI descriptors at National Rice
Research Programme, Hardinath, Dhanusha during 2004/05 and 2005/06. Five quantitative and twelve qualitative traits were
recorded to assess the diversity in agro morphological traits. A range of variability was observed among the accessions of rice
gemplasm.Variability range for number of tillers per hill was 2-27, plant height 40-150cm and maturity 104~151 days. Seven
varieties have been developed and released for commercial cultivation using local rice landraces. The examined gemplasm of rice
have high variability for agro morphological traits which can be used in crop improvement programme. Characterization,
conservation and utilization of such valuable resources would provide a sustainable basis for rice improvement in future.Link for e-copy: http://elibrary.narc.gov.np/?r=1007 E-copies
http://nkcs.org.np/narc/dl/?r=1007URL Agro-morphological characterization fo promising lines of rice for mid-hill conditions of Nepal / Jwala Bajracharya
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 fo promising lines of rice for mid-hill conditions of Nepal Material Type: printed text Authors: Jwala Bajracharya ; Pratima Pandey, Author ; Dev Bahadur Gurung, Author Pagination: 142-148 p. Languages : English (eng) Keywords: Oryza sativa L. ; genetic variability descriptors purity Abstract: Four promising varieties ofrice (Oryza sativa L.) included in FFT and CVT for bill condition
of Nepal were studied for their agro-morphological characterization and preparation of
descriptors using qualitative and quantitative agro -morphological traits. The experiment was
conducted in Khumaltar, Lalitpur, Nepal , us ing a randomized block design with three
replicates in agricultural season in 2010/ 11 and 20 11 / 12. Genetic vari ation was observed
among the qualitative and quantitative characters evaluated and sign ificant variations at the
least (p < 0.05) were observed for 15 of the 20 analysed quantitative traits. Genetic variance
among the lines was observed hi gher than the envirorunental variance, which ensured the
predominance of the genetic components in the differences observed among the rice
promising lines. Leaf measurement and its orientation, culm strength, panicle exertion length,
panicle type, panicle sterility and biomass related traits were found important distinguishing
traits of these rice varieties. Based on the observed variab ility the descriptors of these
promising varieties were prepared, which is hoped to be of great importance for breeding
programs and maintaining the genetic purityLink for e-copy: http://elibrary.narc.gov.np/?r=879 Agro-morphological characterization fo promising lines of rice for mid-hill conditions of Nepal [printed text] / Jwala Bajracharya ; Pratima Pandey, Author ; Dev Bahadur Gurung, Author . - [s.d.] . - 142-148 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: Oryza sativa L. ; genetic variability descriptors purity Abstract: Four promising varieties ofrice (Oryza sativa L.) included in FFT and CVT for bill condition
of Nepal were studied for their agro-morphological characterization and preparation of
descriptors using qualitative and quantitative agro -morphological traits. The experiment was
conducted in Khumaltar, Lalitpur, Nepal , us ing a randomized block design with three
replicates in agricultural season in 2010/ 11 and 20 11 / 12. Genetic vari ation was observed
among the qualitative and quantitative characters evaluated and sign ificant variations at the
least (p < 0.05) were observed for 15 of the 20 analysed quantitative traits. Genetic variance
among the lines was observed hi gher than the envirorunental variance, which ensured the
predominance of the genetic components in the differences observed among the rice
promising lines. Leaf measurement and its orientation, culm strength, panicle exertion length,
panicle type, panicle sterility and biomass related traits were found important distinguishing
traits of these rice varieties. Based on the observed variab ility the descriptors of these
promising varieties were prepared, which is hoped to be of great importance for breeding
programs and maintaining the genetic purityLink for e-copy: http://elibrary.narc.gov.np/?r=879 E-copies
http://nkcs.org.np/narc/dl/?r=879URL
in Rice research in Nepal : Proceedings of 24th National Summer Crops Research Workshop, Khumaltar, Lalitpur, 30-31 June 2004 / Adhikari, N.P.
Title : Characterization and utilization of rice germplasms in Nepal Material Type: printed text Authors: SR Gupta ; HB KC, Author ; Upadhyay, M.P., Author Pagination: 402-407 p. Languages : English (eng) Keywords: Genetic variation ; oryza rice landraces traits Abstract: Rice (Oryza sativa LJ is the main cereal grain and an important staple food crop ofNepal. It
is grown in a wide range of agro ecological regions where landraces and improved varieties
coexist. High level of diversity in the form of landraces and their wild relatives indicates the
richness . in the genetic variation. A total of 13 7 accessio.zs of rice landraces were
characterized for ·morpho agronomic traits using IPGRIJIRRJ descriptors at Khumaltar
during 200212003. Eight quantitative and six qualitative traits were recorded to assess the
diversity in agro morphological traits among these landraces. A range of variability was
observed among the accessions of rice landraces. Altogether 3107, 1728 and 2030
accessions of Nepalese rice germplasms are conserved in the gene bank of ABD, Khumatar,
IRRI and NIAR, respectively. Six varieties of rice were developed and released for
commercial cultivation using local landraces. The examined /andraces of rice have high
variability for agro morphological traits, which can be used in crop improvement
programme. Characterization, conservation and utilization of such valuable resources would
provide a sustainable basis for rice improvement in future.Link for e-copy: http://elibrary.narc.gov.np/?r=1129 Characterization and utilization of rice germplasms in Nepal [printed text] / SR Gupta ; HB KC, Author ; Upadhyay, M.P., Author . - [s.d.] . - 402-407 p.
in Rice research in Nepal : Proceedings of 24th National Summer Crops Research Workshop, Khumaltar, Lalitpur, 30-31 June 2004 / Adhikari, N.P.
Languages : English (eng)
Keywords: Genetic variation ; oryza rice landraces traits Abstract: Rice (Oryza sativa LJ is the main cereal grain and an important staple food crop ofNepal. It
is grown in a wide range of agro ecological regions where landraces and improved varieties
coexist. High level of diversity in the form of landraces and their wild relatives indicates the
richness . in the genetic variation. A total of 13 7 accessio.zs of rice landraces were
characterized for ·morpho agronomic traits using IPGRIJIRRJ descriptors at Khumaltar
during 200212003. Eight quantitative and six qualitative traits were recorded to assess the
diversity in agro morphological traits among these landraces. A range of variability was
observed among the accessions of rice landraces. Altogether 3107, 1728 and 2030
accessions of Nepalese rice germplasms are conserved in the gene bank of ABD, Khumatar,
IRRI and NIAR, respectively. Six varieties of rice were developed and released for
commercial cultivation using local landraces. The examined /andraces of rice have high
variability for agro morphological traits, which can be used in crop improvement
programme. Characterization, conservation and utilization of such valuable resources would
provide a sustainable basis for rice improvement in future.Link for e-copy: http://elibrary.narc.gov.np/?r=1129 E-copies
http://nkcs.org.np/narc/dl/?r=1129URL Heterosis for Yield and Yield Components in Rice / Joshi, Bal K. in Nepal Agriculture Research Journal, Vol. 4 (2000/2001)
[article]
Title : Heterosis for Yield and Yield Components in Rice Material Type: printed text Authors: Joshi, Bal K., Author Publication Date: 2000 Article on page: 6-13 p. Languages : English (eng) Keywords: F1, heterobeltiosis, hybrid vigor, Oryza sativa, standard heterosis Abstract: It is important to know the degree and direction of hybrid vigor for its commercial exploitation.
Heterobeltiosis and standard heterosis were studied in 14 crosses between rice (Oryza sativa L.)
cultivars (improved and landraces) and three wild aborted male sterile parents. These crosses
showed marked variations in the expression of heterobeltiosis and standard heterosis for yield and
yield components. Grain yield manifested highly significant heterobeltiosis and standard heterosis
in five crosses. Heterobeltiosis ranging from –55 to 139% and standard heterosis from –11 to
369% were observed. Highest heterotic effect among the yield components was for panicle
number plant-1 followed by spikelet number and panicle length. With appropriate choice of
parental lines, it is possible to develop F1 rice hybrid possessing distinct yield superiority over the
best-inbred lines.Link for e-copy: http://elibrary.narc.gov.np/?r=86
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 6-13 p.[article] Heterosis for Yield and Yield Components in Rice [printed text] / Joshi, Bal K., Author . - 2000 . - 6-13 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 6-13 p.
Keywords: F1, heterobeltiosis, hybrid vigor, Oryza sativa, standard heterosis Abstract: It is important to know the degree and direction of hybrid vigor for its commercial exploitation.
Heterobeltiosis and standard heterosis were studied in 14 crosses between rice (Oryza sativa L.)
cultivars (improved and landraces) and three wild aborted male sterile parents. These crosses
showed marked variations in the expression of heterobeltiosis and standard heterosis for yield and
yield components. Grain yield manifested highly significant heterobeltiosis and standard heterosis
in five crosses. Heterobeltiosis ranging from –55 to 139% and standard heterosis from –11 to
369% were observed. Highest heterotic effect among the yield components was for panicle
number plant-1 followed by spikelet number and panicle length. With appropriate choice of
parental lines, it is possible to develop F1 rice hybrid possessing distinct yield superiority over the
best-inbred lines.Link for e-copy: http://elibrary.narc.gov.np/?r=86
in Rice research in Nepal : Proceedings of 24th National Summer Crops Research Workshop, Khumaltar, Lalitpur, 30-31 June 2004 / Adhikari, N.P.
Title : Varietal evaluation of rice for disease resistance in the high hills at jumla Material Type: printed text Authors: Vaidya, M.L. Pagination: 349-353 p. Languages : English (eng) Keywords: Cold tolerance ; Blast resistance Pyricularia oryza rice Abstract: Leaf and Neck blast (Pyricularia oryza). being is the major diseases of Rice in the high hills
of Nepal. Ten different genotypes were evaluated in this trial against the resistance and
susceptible for this diseases in Agricultural Research Station, Jumla. The experiment was
laid out in Randomized Complete Block Design (RCBD) with Ten treatments and three
replications. The statistical analysis showed significant dijforence in terms of yield and
diseases resistance among the ten genotypes evaluated NR-10288-JOJ-JJ,NR10288-15JO
15J-7 have been found resistant to diseaseLink for e-copy: http://elibrary.narc.gov.np/?r=1122 Varietal evaluation of rice for disease resistance in the high hills at jumla [printed text] / Vaidya, M.L. . - [s.d.] . - 349-353 p.
in Rice research in Nepal : Proceedings of 24th National Summer Crops Research Workshop, Khumaltar, Lalitpur, 30-31 June 2004 / Adhikari, N.P.
Languages : English (eng)
Keywords: Cold tolerance ; Blast resistance Pyricularia oryza rice Abstract: Leaf and Neck blast (Pyricularia oryza). being is the major diseases of Rice in the high hills
of Nepal. Ten different genotypes were evaluated in this trial against the resistance and
susceptible for this diseases in Agricultural Research Station, Jumla. The experiment was
laid out in Randomized Complete Block Design (RCBD) with Ten treatments and three
replications. The statistical analysis showed significant dijforence in terms of yield and
diseases resistance among the ten genotypes evaluated NR-10288-JOJ-JJ,NR10288-15JO
15J-7 have been found resistant to diseaseLink for e-copy: http://elibrary.narc.gov.np/?r=1122 E-copies
http://nkcs.org.np/narc/dl/?r=1122URL Evaluation of Common Nepalese Rice Cultivars Against Rice Root Knot Nematode / Deepak Sharma Paudyal in Nepal Agriculture Research Journal, Vol. 5 (2004)PermalinkStudy on biomass production of dhaincha (sesbania aculeata pers.) when relayed under maize and its green manuring effect on rice / Gurung, G.B.Permalink