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in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. II / Giri, Y.P.
Title : Maize varietal improvement for terai, inner terai and food hill valleys of Nepal Material Type: printed text Authors: Kunwar, C.B., Editor ; B.N Chaudhari ; Sah, Y.P., Author ; Bhurer, K.P., Author ; Dhakal, J., Author ; J.B Chhetri Keywords: Open Pollinated Varietis (OPVs) Genotypes ; Coordinated varietal trial Terai inner terai Abstract: With the objective of identifying high yielding, disease resistant yello'Y maize varieties, a
series of experiments were conducted during 2010-2012 in RCB Des~gn. In the
Intermediate Yield Trial-Terai Set (IYTT), twenty-one genotypes including standerd check
were tested. The result obtained from the combined analysis at four locations (RARS
Parwanipur, ARS Belachapi, ARS Surkhet, and NMRP Rampur) sh.owed that the genotypes
R POP-1 found highest yielder (5.89 tlha) followed by R POP-2 (5.82 tlha) and RAMPUR
S03F04 (5.78 tlha) were produced higher grain yield respectively. In the Co-ordinated
Varietal Trial-Terai Set (CVTf), the trial was composed multi-location testing for six
locations on winter season (NMRP Rampur, RARS Tarahara, RARS Parwanipur and ARS
Belachapi) and OJi summer season (NMRP Rampur, ARS Surkhet and ARS Doti) with
fourteen treatments including checks. The combined analysis revealed that the genotype
Rampur population-2 produced the highest grain yield (5.88 t/ha) followed by Rampur
Population-4 (5.67 tlha), ACROSS9331RE (5.49 tlha) and BLSBS07F10 (5.24 tlha)
respectively. All the genotypes were found highly significant at 15% moisture level for
grain yield.Link for e-copy: http://elibrary.narc.gov.np/?r=932 Maize varietal improvement for terai, inner terai and food hill valleys of Nepal [printed text] / Kunwar, C.B., Editor ; B.N Chaudhari ; Sah, Y.P., Author ; Bhurer, K.P., Author ; Dhakal, J., Author ; J.B Chhetri . - [s.d.].
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. II / Giri, Y.P.
Keywords: Open Pollinated Varietis (OPVs) Genotypes ; Coordinated varietal trial Terai inner terai Abstract: With the objective of identifying high yielding, disease resistant yello'Y maize varieties, a
series of experiments were conducted during 2010-2012 in RCB Des~gn. In the
Intermediate Yield Trial-Terai Set (IYTT), twenty-one genotypes including standerd check
were tested. The result obtained from the combined analysis at four locations (RARS
Parwanipur, ARS Belachapi, ARS Surkhet, and NMRP Rampur) sh.owed that the genotypes
R POP-1 found highest yielder (5.89 tlha) followed by R POP-2 (5.82 tlha) and RAMPUR
S03F04 (5.78 tlha) were produced higher grain yield respectively. In the Co-ordinated
Varietal Trial-Terai Set (CVTf), the trial was composed multi-location testing for six
locations on winter season (NMRP Rampur, RARS Tarahara, RARS Parwanipur and ARS
Belachapi) and OJi summer season (NMRP Rampur, ARS Surkhet and ARS Doti) with
fourteen treatments including checks. The combined analysis revealed that the genotype
Rampur population-2 produced the highest grain yield (5.88 t/ha) followed by Rampur
Population-4 (5.67 tlha), ACROSS9331RE (5.49 tlha) and BLSBS07F10 (5.24 tlha)
respectively. All the genotypes were found highly significant at 15% moisture level for
grain yield.Link for e-copy: http://elibrary.narc.gov.np/?r=932 E-copies
http://nkcs.org.np/narc/dl/?r=932URL Rice Gene Pool for Tarai and Inner Tarai Areas of Nepal / Joshi, Bal K. in Nepal Agriculture Research Journal, Vol. 6 (2005)
[article]
Title : Rice Gene Pool for Tarai and Inner Tarai Areas of Nepal Material Type: printed text Authors: Joshi, Bal K., Author Publication Date: 2005 Article on page: 10-22 p Languages : English (eng) Keywords: Ancestor, Landrace, Nepalese rice cultivar, Rice gene pool, Tarai and Inner Abstract: Knowledge on crop gene pool helps to develop varieties, to know the potential sources for
breeding materials and to develop strategy for sustainable use and conservation. The amount of
genetic diversity presents depends on the number and diversity of the original ancestors
involved in the creation of a germplasm pool, existing landraces and wild species. The objective
of this research was to study the diversity of rice gene pool present in the Nepalese improved
rice cultivars and landraces adapted to Tarai and Inner Tarai ( Nepalese rice cultivars were examined and surveyed the literature for distribution of landraces
and wild relatives of rice. Crosses among indica rice gene pool are more common and use of
japonica and nivara species were less common. There are 28 improved rice cultivars, >500
landraces, and 6 wild species and relatives of rice adapted to Tarai and Inner Tarai. Eight
countries are the origins for 28 cultivars. In Nepal 4 cultivars were bred and developed using a
local landrace and exotic genotypes. A total of 35 ancestors originated in 11 different countries
were used to develop these 28 cultivars. Highest number of ancestors was from India. Use of
ancestors of both sativa and nivara species having indica and japonica types indicated the
collection of wide gene pool. Most of the ancestors were sativa (60.00%) and indica (65.71%).
Genetic erosion is observed in rice diversity therefore, in situ, on farm and ex situ conservations
are necessary for maintaining the genetic variation. Utilization of local landraces in breeding
program may be the good way of genetic resources conservation. Gene pool from these
landraces along with international gene pool could make towards success in developing high
yielding cultivars with wide adaptability and/or site specific. In this study, cultivars and
landraces surveyed represent a wide range of variation for different areas of origin and
adaptation. This genetic diversity is very useful for further rice improvement and should be
conserved both ex situ and in situ.Link for e-copy: http://elibrary.narc.gov.np/?r=56
in Nepal Agriculture Research Journal > Vol. 6 (2005) . - 10-22 p[article] Rice Gene Pool for Tarai and Inner Tarai Areas of Nepal [printed text] / Joshi, Bal K., Author . - 2005 . - 10-22 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 6 (2005) . - 10-22 p
Keywords: Ancestor, Landrace, Nepalese rice cultivar, Rice gene pool, Tarai and Inner Abstract: Knowledge on crop gene pool helps to develop varieties, to know the potential sources for
breeding materials and to develop strategy for sustainable use and conservation. The amount of
genetic diversity presents depends on the number and diversity of the original ancestors
involved in the creation of a germplasm pool, existing landraces and wild species. The objective
of this research was to study the diversity of rice gene pool present in the Nepalese improved
rice cultivars and landraces adapted to Tarai and Inner Tarai ( Nepalese rice cultivars were examined and surveyed the literature for distribution of landraces
and wild relatives of rice. Crosses among indica rice gene pool are more common and use of
japonica and nivara species were less common. There are 28 improved rice cultivars, >500
landraces, and 6 wild species and relatives of rice adapted to Tarai and Inner Tarai. Eight
countries are the origins for 28 cultivars. In Nepal 4 cultivars were bred and developed using a
local landrace and exotic genotypes. A total of 35 ancestors originated in 11 different countries
were used to develop these 28 cultivars. Highest number of ancestors was from India. Use of
ancestors of both sativa and nivara species having indica and japonica types indicated the
collection of wide gene pool. Most of the ancestors were sativa (60.00%) and indica (65.71%).
Genetic erosion is observed in rice diversity therefore, in situ, on farm and ex situ conservations
are necessary for maintaining the genetic variation. Utilization of local landraces in breeding
program may be the good way of genetic resources conservation. Gene pool from these
landraces along with international gene pool could make towards success in developing high
yielding cultivars with wide adaptability and/or site specific. In this study, cultivars and
landraces surveyed represent a wide range of variation for different areas of origin and
adaptation. This genetic diversity is very useful for further rice improvement and should be
conserved both ex situ and in situ.Link for e-copy: http://elibrary.narc.gov.np/?r=56