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Refine your searchRice Gene Pool for Tarai and Inner Tarai Areas of Nepal / Joshi, Bal K. in Nepal Agriculture Research Journal, Vol. 6 (2005)
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
in Agricultural research for enhancing livelihood of Nepalese people: Proceedings of 2nd SAS-N Convention, 30 July-1 Aug 2003, Kathmandu / Joshi, Bal K.
Title : Adoption of boro rice in Parsa and Bara Material Type: printed text Authors: Bhurer, K.P., Author ; D.B. Gharti, Author ; G Sah, Author ; M.L. Sah, Author ; S Justice, Author Pagination: 33-35 p. Languages : English (eng) Keywords: Boro rice, Tarai areas, yield performance Abstract: Four varieties of boro rice namely BG 1442. Saroj, Gautam and Jaya were tested at 3 sites with a view to popularize and let the farmers adopt promising boro rice cultivars in the command area. BG 1442 and Jaya yielded the highest (5543 kg/ha) IN Belwa, Parss, Saroj and Gautam were low yielder (4435 kg/ha). At Fatepur, Bara, Gautam, Jaya, BRRI DHAN 36 and Sugaha local were verified and produced 3210, 3210, 3120 and 1980 kg/ha respectively. In 2002/03 boro rice varieties such as Prabhat, Gautam, Dhan Laxmi and Richharia were included for verification at Biruwaguthi, Parsa and gave 3343, 4241, 3185 and 2266 kg/ha, respectively. Gautam, Prabhat and Dhan Laxmi can be grown as boro rice.
Link for e-copy: http://elibrary.narc.gov.np/?r=869 Adoption of boro rice in Parsa and Bara [printed text] / Bhurer, K.P., Author ; D.B. Gharti, Author ; G Sah, Author ; M.L. Sah, Author ; S Justice, Author . - [s.d.] . - 33-35 p.
in Agricultural research for enhancing livelihood of Nepalese people: Proceedings of 2nd SAS-N Convention, 30 July-1 Aug 2003, Kathmandu / Joshi, Bal K.
Languages : English (eng)
Keywords: Boro rice, Tarai areas, yield performance Abstract: Four varieties of boro rice namely BG 1442. Saroj, Gautam and Jaya were tested at 3 sites with a view to popularize and let the farmers adopt promising boro rice cultivars in the command area. BG 1442 and Jaya yielded the highest (5543 kg/ha) IN Belwa, Parss, Saroj and Gautam were low yielder (4435 kg/ha). At Fatepur, Bara, Gautam, Jaya, BRRI DHAN 36 and Sugaha local were verified and produced 3210, 3210, 3120 and 1980 kg/ha respectively. In 2002/03 boro rice varieties such as Prabhat, Gautam, Dhan Laxmi and Richharia were included for verification at Biruwaguthi, Parsa and gave 3343, 4241, 3185 and 2266 kg/ha, respectively. Gautam, Prabhat and Dhan Laxmi can be grown as boro rice.
Link for e-copy: http://elibrary.narc.gov.np/?r=869 E-copies
http://nkcs.org.np/narc/dl/?r=869URL
