Enhancing yield potential of rainfed rice using participatory plant breeding and participatory varietal selection during 2004/05 / Yadaw, R.B.    

Public ISBD in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.     Title : Enhancing yield potential of rainfed rice using participatory plant breeding and participatory varietal selection during 2004/05 Material Type: printed text Authors: Yadaw, R.B., Editor ; Khatiwada, S.P., Editor ; B. Chaudhary, Author ; Akhtar, T., Author ; NP Adhikari, Author ; A Mudwari, Author ; MP Upadhayay, Author ; Baniya, B.K., Author ; Joshi, K.D., Author Publisher: Hardinath, Janakpur : National Rice Research Programme Publication Date: 2010 Pagination: 10-12 p. Abstract: Particip~tory pl~t breeding pro~m was initiated through in-situ project since 1999 with aim to address these problems by developmg new nee genotypes. Smce last 7 years , 15 of F4 and 6 of F7 segregating population were grown at different fanners' field of . .Kachorwa, Pakadiya and Lauki of Bara, Dhanusha, and Sunsari districs respectively. Three F4 and one F7 segregating populations of.Kachorwa dhan -4 were grown at each farmer's field to select individual superior hills separately suitable in rainfed with the active participation of plant breeder and farmers using bulk. method. Five out of 15 (F4) were selected and advanced to subsequent generation till fixed.Among the distributed population, Kachorwa dhan-4,8,5,11( DudhisaroX BG-1442),25 LajhiX Rampurmasuli),26 mansarax ,and 27 were found superior with their yield attributing characters. Where as, 4 out of 6 (F7) Populations were selected for replicated mother trail. In (Participatory Variety Selection) PVS, 5 advanced lines including check of 5 sets were planted in farmers' field of Pakadiya of Dhanusha District and Lauki of Sunasari District Among the tested genotypes; BR4684, IR58115, and IR67015 performed better in respect of grain yield and quality. Majority of the farmers preferred these genotypes due to higher grain yield and their high milling recovery. Link for e-copy: http://elibrary.narc.gov.np/?r=1000 in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.     Enhancing yield potential of rainfed rice using participatory plant breeding and participatory varietal selection during 2004/05 [printed text] / Yadaw, R.B., Editor ; Khatiwada, S.P., Editor ; B. Chaudhary, Author ; Akhtar, T., Author ; NP Adhikari, Author ; A Mudwari, Author ; MP Upadhayay, Author ; Baniya, B.K., Author ; Joshi, K.D., Author . - Hardinath, Janakpur : National Rice Research Programme, 2010 . - 10-12 p. Abstract: Particip~tory pl~t breeding pro~m was initiated through in-situ project since 1999 with aim to address these problems by developmg new nee genotypes. Smce last 7 years , 15 of F4 and 6 of F7 segregating population were grown at different fanners' field of . .Kachorwa, Pakadiya and Lauki of Bara, Dhanusha, and Sunsari districs respectively. Three F4 and one F7 segregating populations of.Kachorwa dhan -4 were grown at each farmer's field to select individual superior hills separately suitable in rainfed with the active participation of plant breeder and farmers using bulk. method. Five out of 15 (F4) were selected and advanced to subsequent generation till fixed.Among the distributed population, Kachorwa dhan-4,8,5,11( DudhisaroX BG-1442),25 LajhiX Rampurmasuli),26 mansarax ,and 27 were found superior with their yield attributing characters. Where as, 4 out of 6 (F7) Populations were selected for replicated mother trail. In (Participatory Variety Selection) PVS, 5 advanced lines including check of 5 sets were planted in farmers' field of Pakadiya of Dhanusha District and Lauki of Sunasari District Among the tested genotypes; BR4684, IR58115, and IR67015 performed better in respect of grain yield and quality. Majority of the farmers preferred these genotypes due to higher grain yield and their high milling recovery. Link for e-copy: http://elibrary.narc.gov.np/?r=1000

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Realities on Nepalese rice landraces / RB Amgain    

Public ISBD in Rice research in Nepal : Proceedings of 24th National Summer Crops Research Workshop, Khumaltar, Lalitpur, 30-31 June 2004 / Adhikari, N.P.     Title : Realities on Nepalese rice landraces Material Type: printed text Authors: RB Amgain ; B.K. Joshi, Author ; NP Adhikari, Author ; A Mudwari, Author ; MP Upadhayay, Author ; BK Baniya, Author Pagination: 418-423 p. Languages : English (eng) Abstract: Rice is economically, socially, and culturally important crop of Nepal. Landraces occupies the significant role in Nepalese rice system. They are important rice genetic resources of the count1y. However, they are declining day by day. Household survey and focus group discussion was carried out in Zvadul besi area (Gorkha) d!lring Nov.-Dec. 2003. Focus group discussion iiz Kachorwa (Bara) was also conducted during Jan. 2004. The purpose of the study was to identify the changed diversity on rice landraces, and its cause. In case of Kachorwa, Community Biodiversity Register (CBR), 2003 was used for our purpose. Genetic erosion was also quantified using Guarino 's score (199 5). Though, the score for genetic erosion is not high in Zydul besi (20), the inter-varietal diversity of rice landraces was found decreasing. Zydul besi farmers were searching for rice varieties that have higher and stable yield, but till now no modern varieties can compete with their landraces Aanpjhutte. No. and area un:Jer landraces was found drastically decreased in Kachorwa since last fev.• years. Despite of higher Guarino's score (75), In-situ conservation on agro-biodiversity project is working effectively for consen,ation of rice landraces using different approach of conservation. However, Kachonva farmers also start the introduction of hybrid rice. Culturally important rice landraces were found cultivated by many households in small area only. Since, rice landraces were most 1ieed to resource poor farmers, its replacement can be effectively reduced by removal of its undesirable characters. Participatory Plant Breeding (PPB) is the most important technology for sustainable conservation of Nepalese rice landrace gene pool. Since, farmers were not aware on benefit sharing, and their right, P P B will create their interest towards IPRs also. Link for e-copy: http://elibrary.narc.gov.np/?r=1132 in Rice research in Nepal : Proceedings of 24th National Summer Crops Research Workshop, Khumaltar, Lalitpur, 30-31 June 2004 / Adhikari, N.P.     Realities on Nepalese rice landraces [printed text] / RB Amgain ; B.K. Joshi, Author ; NP Adhikari, Author ; A Mudwari, Author ; MP Upadhayay, Author ; BK Baniya, Author . - [s.d.] . - 418-423 p. Languages : English (eng) Abstract: Rice is economically, socially, and culturally important crop of Nepal. Landraces occupies the significant role in Nepalese rice system. They are important rice genetic resources of the count1y. However, they are declining day by day. Household survey and focus group discussion was carried out in Zvadul besi area (Gorkha) d!lring Nov.-Dec. 2003. Focus group discussion iiz Kachorwa (Bara) was also conducted during Jan. 2004. The purpose of the study was to identify the changed diversity on rice landraces, and its cause. In case of Kachorwa, Community Biodiversity Register (CBR), 2003 was used for our purpose. Genetic erosion was also quantified using Guarino 's score (199 5). Though, the score for genetic erosion is not high in Zydul besi (20), the inter-varietal diversity of rice landraces was found decreasing. Zydul besi farmers were searching for rice varieties that have higher and stable yield, but till now no modern varieties can compete with their landraces Aanpjhutte. No. and area un:Jer landraces was found drastically decreased in Kachorwa since last fev.• years. Despite of higher Guarino's score (75), In-situ conservation on agro-biodiversity project is working effectively for consen,ation of rice landraces using different approach of conservation. However, Kachonva farmers also start the introduction of hybrid rice. Culturally important rice landraces were found cultivated by many households in small area only. Since, rice landraces were most 1ieed to resource poor farmers, its replacement can be effectively reduced by removal of its undesirable characters. Participatory Plant Breeding (PPB) is the most important technology for sustainable conservation of Nepalese rice landrace gene pool. Since, farmers were not aware on benefit sharing, and their right, P P B will create their interest towards IPRs also. Link for e-copy: http://elibrary.narc.gov.np/?r=1132

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