Search results
9 result(s) search for keyword(s) 'inbred'
Evaluation of CIMMYT hybrids and NMRP developed inbred lines / Koirala, K.B.
Title : Evaluation of CIMMYT hybrids and NMRP developed inbred lines Material Type: printed text Authors: Koirala, K.B., Editor ; Gurung D.B. ; Rijal, T.R., Author ; J.B Chhetri, Author ; Sah, Yamuna Prasad, Author ; Mitali Shah, Author ; Shrestha, J., Author Pagination: 155-162 p. Keywords: Inbred maize ; crossing selfing hybrid Abstract: Six sets of hybrid trials both yellow and white grain type received from CIMMYT during
2011 were evaluated under multilocations (Rampur, Parwanipur, Belachhapi and
Nepalgunj). The result from Tropical Low Land Hybrid Maize Trial (10ASA15HW10)
centaining eighteen genotypes and tested at Rampur revealed that SRR-C2SA6HS90-1-2-1-
B/CLA127, CLA135/CML399 and CML247/CML254/CLA135 were found significantly
high grain yielder. In CIMMYI' Hybrid trial (10BSA16HY) consisting of twenty
genotypes, hybrids namely (CML172 x CLQ6601)-B-B-8-B-1-1-B-B/CML161, V305-34-
3-2-B/CML165//CL02450, and (CLA37/CLA16)-B-B-B-4-B/CLA41//CL02450 performed
well?. Similarly, in CIMMYT Hybrid trial (TTWCWL24) consisted of twenty hybrids, the
promising genotypes were CLRCW96/CLRC, CL-RCW42/CML and CML49l/CLQRC for
grain yield and other quantitative traits. Likewise, CIMMYT Hybrid trial (TTWCWL25)
consisted of twenty genotypes was planted in Parwanipur and Nepalgunj. The superior
hybrids at Parwanipur for grain yield production were CLRCW96/CLRC, CML-
491/CLQRC and CLQ-RCWQ10/C, and at Nepalgunj CLRCW85/CLRC,
CML502/CLQRC and CL-RCW42/CML were found superior for grain yield. During 2011
winter season at Rampur 197 inbred lines were evaluated for per se performance and best
inbreds were RML-4, RML-5, RML-84, RML-95, RML-96, RL-14, RL-11 I, RL-105,
NML-2 and RML-19 which were used both for sel:fing and crossing with what?. Seed
increase of 239 fixed inbreds were carried out at Rampur applying control pollination.
Moreover, during 2012 winter season a total of 164 inbred lines were evaluated to see their
per se performance and other agronomic traits. Based on overall performance, RML-64,
RML-4, RML-90, RML-91, RML-103, RML-122, RML-127, RML-129, RML-134, RML-
140, RL-21and RL-37 were identified promising.Evaluation of CIMMYT hybrids and NMRP developed inbred lines [printed text] / Koirala, K.B., Editor ; Gurung D.B. ; Rijal, T.R., Author ; J.B Chhetri, Author ; Sah, Yamuna Prasad, Author ; Mitali Shah, Author ; Shrestha, J., Author . - [s.d.] . - 155-162 p.
Keywords: Inbred maize ; crossing selfing hybrid Abstract: Six sets of hybrid trials both yellow and white grain type received from CIMMYT during
2011 were evaluated under multilocations (Rampur, Parwanipur, Belachhapi and
Nepalgunj). The result from Tropical Low Land Hybrid Maize Trial (10ASA15HW10)
centaining eighteen genotypes and tested at Rampur revealed that SRR-C2SA6HS90-1-2-1-
B/CLA127, CLA135/CML399 and CML247/CML254/CLA135 were found significantly
high grain yielder. In CIMMYI' Hybrid trial (10BSA16HY) consisting of twenty
genotypes, hybrids namely (CML172 x CLQ6601)-B-B-8-B-1-1-B-B/CML161, V305-34-
3-2-B/CML165//CL02450, and (CLA37/CLA16)-B-B-B-4-B/CLA41//CL02450 performed
well?. Similarly, in CIMMYT Hybrid trial (TTWCWL24) consisted of twenty hybrids, the
promising genotypes were CLRCW96/CLRC, CL-RCW42/CML and CML49l/CLQRC for
grain yield and other quantitative traits. Likewise, CIMMYT Hybrid trial (TTWCWL25)
consisted of twenty genotypes was planted in Parwanipur and Nepalgunj. The superior
hybrids at Parwanipur for grain yield production were CLRCW96/CLRC, CML-
491/CLQRC and CLQ-RCWQ10/C, and at Nepalgunj CLRCW85/CLRC,
CML502/CLQRC and CL-RCW42/CML were found superior for grain yield. During 2011
winter season at Rampur 197 inbred lines were evaluated for per se performance and best
inbreds were RML-4, RML-5, RML-84, RML-95, RML-96, RL-14, RL-11 I, RL-105,
NML-2 and RML-19 which were used both for sel:fing and crossing with what?. Seed
increase of 239 fixed inbreds were carried out at Rampur applying control pollination.
Moreover, during 2012 winter season a total of 164 inbred lines were evaluated to see their
per se performance and other agronomic traits. Based on overall performance, RML-64,
RML-4, RML-90, RML-91, RML-103, RML-122, RML-127, RML-129, RML-134, RML-
140, RL-21and RL-37 were identified promising.Evaluation of Tomato Inbred Lines for the Production of Fl Hybrids / Regmi, H.N. ; Budathoki, K ; N G Pradhan
Title : Evaluation of Tomato Inbred Lines for the Production of Fl Hybrids Material Type: printed text Authors: Regmi, H.N., Author ; Budathoki, K, Author ; N G Pradhan, Author Pagination: 401-404 p. Languages : English (eng) Keywords: hybrid, tomato, inbred lines Abstract: It has been estimated that hybrid seed of vegetable crops worth of million of Rupees is
imported every year to Nepal from various countries. These imported hybrid seeds are too
expensive and are affordable only to few resource rich famzers. Additionally the supply of
these hybrids seeds is irregular and quality is questionable which have affected productivity,
production, quality and income of farmers. In view of these problems hybrid seed production
of tomato was initiated at Horticulture Research Division Klwmaltar, during 2001, 2002 and
2003. A total of 18 inbred lines were characterized and evaluated. Variation infntit size (20
gm to 100 gm), fntit shape (round to oblong), growth habit (determinate and indeterminate),
yield potelltial of these inbreeds are recorded. Also different crosses were made from these
inbred lines. A total of 35 combinations were made during last three years. These F1 hybrid.
lines had fruit size ranged from 30 gm to BO·gm. Tomato growers from Kathmandu, i.Alitpur,
Bhaktapurand Kavre Districts evaluated these FJ hybrid lines at HRD, Khumal and selected
some of F1 lines on the basis offntit size, wilt tolerance andfntit shape.Link for e-copy: http://elibrary.narc.gov.np/?r=677 Evaluation of Tomato Inbred Lines for the Production of Fl Hybrids [printed text] / Regmi, H.N., Author ; Budathoki, K, Author ; N G Pradhan, Author . - [s.d.] . - 401-404 p.
Languages : English (eng)
Keywords: hybrid, tomato, inbred lines Abstract: It has been estimated that hybrid seed of vegetable crops worth of million of Rupees is
imported every year to Nepal from various countries. These imported hybrid seeds are too
expensive and are affordable only to few resource rich famzers. Additionally the supply of
these hybrids seeds is irregular and quality is questionable which have affected productivity,
production, quality and income of farmers. In view of these problems hybrid seed production
of tomato was initiated at Horticulture Research Division Klwmaltar, during 2001, 2002 and
2003. A total of 18 inbred lines were characterized and evaluated. Variation infntit size (20
gm to 100 gm), fntit shape (round to oblong), growth habit (determinate and indeterminate),
yield potelltial of these inbreeds are recorded. Also different crosses were made from these
inbred lines. A total of 35 combinations were made during last three years. These F1 hybrid.
lines had fruit size ranged from 30 gm to BO·gm. Tomato growers from Kathmandu, i.Alitpur,
Bhaktapurand Kavre Districts evaluated these FJ hybrid lines at HRD, Khumal and selected
some of F1 lines on the basis offntit size, wilt tolerance andfntit shape.Link for e-copy: http://elibrary.narc.gov.np/?r=677 E-copies
http://nkcs.org.np/narc/dl/?r=677URL
in Proceedings of the 23rd National Summer Crops Workshop on Maize Research and Production held NARC Khumaltar, Lalitpur, Nepal, July 2-4, 2002, / Adhikari, K.
Title : Hybrid maize research works at Khumaltar Material Type: printed text Authors: A Priyadarshi, Editor ; Baniya, B.K., Author ; K Dahal, Author Pagination: 176-205 p. Keywords: Hybrid ; maize genotype yield inbred Abstract: Hybrid maize varieties yield more in high inputs condition. Hybridization is the method of producing
new crop varieties in which two or more genotypes of different genetical constitution are 'crossed
together. Hybridization offers the greater possibilities in crop improvement. Nepalese policy mal{ers
have recognized the importance of hybrid varieties and have mentioned in nationa{ policy
documents. Therefore, Agriculture Botany Division, Khlimaltar is evaluating local as well as exotic
germplasm focusing on hybrid development in collaboration with NMRP, Rampur and CIMMYT,
Mexico, Zimbabwe and Thailand with objective of identifying superior genotypes for high inputs mid
hill condition of Nepal, and to develop and maintain maize inbred lines for hybrid development.
During last three years (1999-2001), number of inbred lines and hybrid trials from different sources
were evaluated at Khumaltar. Most of the hybrid yielded more than 1 0-ton ha"1
, whereas some of the
hybrid yielded as much as 14 ton ha-1
• CML 287 X CML 323, CML 226 X CML 295, NC 300 X ClvfL
323 and NC 300 X CML 295 etc, hybrids were found high yielder and promising. Whereas NC 300 X
CML 323 was the earliest in maturity and the shortest in plant height. In cross-pollinated crops,
parents are artificially selfed to generate ideal inbred. At Khumaltar, inbred lines of superior
hybrids were evaluated and maintained. In 2001 the inbred line were crossed to develop Fl
generation seed, where 5 best female inbred and 5 best male inbred lines were used and twenty-one
single cross F1 hybrids were developed ~nd they will be tested in 2002. CML series 20, 223, 226,
287, 295, 323, 324, 327, 329, NC 300 and Ali!ATLCOHS 92-1-1-3E-1-4-2-3-1-B-B inbred lines were
promising in combining ability and agronomical characters, and they will be used in developing
maize hy brids in.fitture.Link for e-copy: http://elibrary.narc.gov.np/?r=749 Hybrid maize research works at Khumaltar [printed text] / A Priyadarshi, Editor ; Baniya, B.K., Author ; K Dahal, Author . - [s.d.] . - 176-205 p.
in Proceedings of the 23rd National Summer Crops Workshop on Maize Research and Production held NARC Khumaltar, Lalitpur, Nepal, July 2-4, 2002, / Adhikari, K.
Keywords: Hybrid ; maize genotype yield inbred Abstract: Hybrid maize varieties yield more in high inputs condition. Hybridization is the method of producing
new crop varieties in which two or more genotypes of different genetical constitution are 'crossed
together. Hybridization offers the greater possibilities in crop improvement. Nepalese policy mal{ers
have recognized the importance of hybrid varieties and have mentioned in nationa{ policy
documents. Therefore, Agriculture Botany Division, Khlimaltar is evaluating local as well as exotic
germplasm focusing on hybrid development in collaboration with NMRP, Rampur and CIMMYT,
Mexico, Zimbabwe and Thailand with objective of identifying superior genotypes for high inputs mid
hill condition of Nepal, and to develop and maintain maize inbred lines for hybrid development.
During last three years (1999-2001), number of inbred lines and hybrid trials from different sources
were evaluated at Khumaltar. Most of the hybrid yielded more than 1 0-ton ha"1
, whereas some of the
hybrid yielded as much as 14 ton ha-1
• CML 287 X CML 323, CML 226 X CML 295, NC 300 X ClvfL
323 and NC 300 X CML 295 etc, hybrids were found high yielder and promising. Whereas NC 300 X
CML 323 was the earliest in maturity and the shortest in plant height. In cross-pollinated crops,
parents are artificially selfed to generate ideal inbred. At Khumaltar, inbred lines of superior
hybrids were evaluated and maintained. In 2001 the inbred line were crossed to develop Fl
generation seed, where 5 best female inbred and 5 best male inbred lines were used and twenty-one
single cross F1 hybrids were developed ~nd they will be tested in 2002. CML series 20, 223, 226,
287, 295, 323, 324, 327, 329, NC 300 and Ali!ATLCOHS 92-1-1-3E-1-4-2-3-1-B-B inbred lines were
promising in combining ability and agronomical characters, and they will be used in developing
maize hy brids in.fitture.Link for e-copy: http://elibrary.narc.gov.np/?r=749 E-copies
http://nkcs.org.np/narc/dl/?r=749URL Community based maize seed production: A new approach for rapid promotion of the improved seeds / Koirala, K.B.
in Proceedings of the 23rd National Summer Crops Workshop on Maize Research and Production held NARC Khumaltar, Lalitpur, Nepal, July 2-4, 2002, / Adhikari, K.
Title : Community based maize seed production: A new approach for rapid promotion of the improved seeds Material Type: printed text Authors: Koirala, K.B., Editor ; Gurung D.B., Author ; Pokhrel, B.B., Author Pagination: 241-244 p. Keywords: Hybrid ; maize genotype yield inbred Abstract: unavailability of quality seed with desired c]uantities has been a major constrain_ts for the hill farm{!rs
.. · . of Nepal since many years. Realizing this; Agricultural Research Station (ARS) •. Dailelch·initiated a
· community based seed production program at . two Village Development Com.'!"ittees (VDCs) of
.. D.ailekh district in 2000 summer. The program was fourJd quite successful and liked by. the farmer:~.
As a result, ten more · VDCs (sites) were added in 2001. pistrict Agriculture Development Office
(DAPO) ~as t(llso involved in selecting · the seed production pockets. Impr~d ·maize ·variety.
Manakamana-1 was used for (his purpose. Seed producers' groups were formed in. each site with th~ .
objective of maintaining isolation and easy disposal of produced seeds of different parts of the .
· district. A total of 27 and 104 farmers were involved consisting two and twelve groups in ·2000 and ·
2001, respectively. Approximately 2 hectares of land was under se(Jd production in et(lch site. Seed
and chemical fertiliz.er.s were provided to the groups of Bindhyabasini and Kalbhairab VDCS as free
while ten groups ·received only seeds. Training and other technical support was provi4ed to all "the
groups. Apou( 3 and '29."48 tons of maize seeds were produced under ihis program in 2000 ant! 2001, ·
. respectively. An interaction was held with the farmers on strengthening the program in future and
sustainability as well. It has been ·realized that community based seed prqductiorJ is only the best
option: for supplying and promoting the i;nproved seeds for the hill distriqts where input delivery
. system is not well developed.Link for e-copy: http://elibrary.narc.gov.np/?r=753 Community based maize seed production: A new approach for rapid promotion of the improved seeds [printed text] / Koirala, K.B., Editor ; Gurung D.B., Author ; Pokhrel, B.B., Author . - [s.d.] . - 241-244 p.
in Proceedings of the 23rd National Summer Crops Workshop on Maize Research and Production held NARC Khumaltar, Lalitpur, Nepal, July 2-4, 2002, / Adhikari, K.
Keywords: Hybrid ; maize genotype yield inbred Abstract: unavailability of quality seed with desired c]uantities has been a major constrain_ts for the hill farm{!rs
.. · . of Nepal since many years. Realizing this; Agricultural Research Station (ARS) •. Dailelch·initiated a
· community based seed production program at . two Village Development Com.'!"ittees (VDCs) of
.. D.ailekh district in 2000 summer. The program was fourJd quite successful and liked by. the farmer:~.
As a result, ten more · VDCs (sites) were added in 2001. pistrict Agriculture Development Office
(DAPO) ~as t(llso involved in selecting · the seed production pockets. Impr~d ·maize ·variety.
Manakamana-1 was used for (his purpose. Seed producers' groups were formed in. each site with th~ .
objective of maintaining isolation and easy disposal of produced seeds of different parts of the .
· district. A total of 27 and 104 farmers were involved consisting two and twelve groups in ·2000 and ·
2001, respectively. Approximately 2 hectares of land was under se(Jd production in et(lch site. Seed
and chemical fertiliz.er.s were provided to the groups of Bindhyabasini and Kalbhairab VDCS as free
while ten groups ·received only seeds. Training and other technical support was provi4ed to all "the
groups. Apou( 3 and '29."48 tons of maize seeds were produced under ihis program in 2000 ant! 2001, ·
. respectively. An interaction was held with the farmers on strengthening the program in future and
sustainability as well. It has been ·realized that community based seed prqductiorJ is only the best
option: for supplying and promoting the i;nproved seeds for the hill distriqts where input delivery
. system is not well developed.Link for e-copy: http://elibrary.narc.gov.np/?r=753 E-copies
http://nkcs.org.np/narc/dl/?r=753URL
in Proceedings of the 23rd National Summer Crops Workshop on Maize Research and Production held NARC Khumaltar, Lalitpur, Nepal, July 2-4, 2002, / Adhikari, K.
Title : Community managed maize seed production program: an experience of ars, Lumle Material Type: printed text Authors: Joshi, K.R., Editor ; Tripathi, B.P., Author ; Karki, T.B., Author Pagination: 245-252 p. Keywords: Hybrid ; maize genotype yield inbred Abstract: ·The main ·objective of the program was to initiate participatory onfarm maize seed production in .
·order to. meet the local level seed demand and develop as an enterprise. ~· total of fifty ni7Je .
farmers were involved in seed multiplication program. The program was conducted· at four
· villages namely.Dudhekhola (river basin), ·Artbunge "(mid hill), Bhakiml (high hill) of Myagdi, .
·· district and Deitrali (mid hill) in Palpa district in the western hills of Nepal. Agricultural·
Research Sta(ion, Lumle assisted to establish the revolving fund in a group to make the program
·sustainable. Far~e~s from Dudhekhola of Myagdi produced]. 0 mt of Arun -I from 2. 0 hectares· ·
of land and Arthunge produced I. 85 mt seed of Manakamana - I fi·om 3. 0 hectares. All together ·
2. 85 mt of seed was sold to different agencies at the rate of Rs. I8. 0/kg and the remaining seeds ·
. were exchanged among the farmers during .summer season of 2000. Farmers from -Bhakimli
produced 2.3 mt ·maize seed of (Manakamana ~I) from 2.5 hectares of land and I.O mt of white
· hill pool seed was produced from I.5 hec(ares at Bhaidmli, Myagdi. Similarly, farm~rs from
Deaural, Palpd produped I.O mt of Population- 22 maize· seed from I.2 hectares, ZM 62I 0.05
· . · mt. from 0. 03 hectare and Yellow hill pool was 0. 05 mt from 0. 02 hectare. A total of 3. 4 mt. of
. . seed ll?~ . sold to different agenci~s at the rate of Rs. I8. 0/kg and the remaining. seeds w_ere
exchanged among_ the farmers to farmers as cash and as well as kind. The net return from a
· hectare oj land of Arun maize seed production was· Rs. 23885. 0/hectare at river ·basin of
' Dhudhekhola and Rs. "19I50.0/ hectare from Manakamana -I in mid hill of Arthunge and grass ·
product of maize seed output/inpur ratio. was 2.23 and 1".83 respectively at each location during
. 2000. Similarly, net return from a hectare of land ·of maize seed was Rs. 25I59.0 at mid hill, ·
Dew·ali and Rs. 2~920.0 hectare from high hili Bhakimli. The gross. product of maize seed of
output/input ration was 2.I6 at Deurali, Palpa and 2.0I .at Bhakimli, Myagdi districts in 200I,_
Community based maize seed production program was implemented succes$fully with the active
participation of researchers, extension, liNGO 011d farmers. Farmers were highly impressed with ·
the community managed seed production, which helped to increase production and productivity
·as well as generated income of the farmers .through the seed. enterprise. Such program should be. .
. . launched in other potential areas of the couniry to meet the seed demand of the farmers ·locally
and improve the economic stahis ofthe ·hillfarme~·s.Link for e-copy: http://elibrary.narc.gov.np/?r=754 Community managed maize seed production program: an experience of ars, Lumle [printed text] / Joshi, K.R., Editor ; Tripathi, B.P., Author ; Karki, T.B., Author . - [s.d.] . - 245-252 p.
in Proceedings of the 23rd National Summer Crops Workshop on Maize Research and Production held NARC Khumaltar, Lalitpur, Nepal, July 2-4, 2002, / Adhikari, K.
Keywords: Hybrid ; maize genotype yield inbred Abstract: ·The main ·objective of the program was to initiate participatory onfarm maize seed production in .
·order to. meet the local level seed demand and develop as an enterprise. ~· total of fifty ni7Je .
farmers were involved in seed multiplication program. The program was conducted· at four
· villages namely.Dudhekhola (river basin), ·Artbunge "(mid hill), Bhakiml (high hill) of Myagdi, .
·· district and Deitrali (mid hill) in Palpa district in the western hills of Nepal. Agricultural·
Research Sta(ion, Lumle assisted to establish the revolving fund in a group to make the program
·sustainable. Far~e~s from Dudhekhola of Myagdi produced]. 0 mt of Arun -I from 2. 0 hectares· ·
of land and Arthunge produced I. 85 mt seed of Manakamana - I fi·om 3. 0 hectares. All together ·
2. 85 mt of seed was sold to different agencies at the rate of Rs. I8. 0/kg and the remaining seeds ·
. were exchanged among the farmers during .summer season of 2000. Farmers from -Bhakimli
produced 2.3 mt ·maize seed of (Manakamana ~I) from 2.5 hectares of land and I.O mt of white
· hill pool seed was produced from I.5 hec(ares at Bhaidmli, Myagdi. Similarly, farm~rs from
Deaural, Palpd produped I.O mt of Population- 22 maize· seed from I.2 hectares, ZM 62I 0.05
· . · mt. from 0. 03 hectare and Yellow hill pool was 0. 05 mt from 0. 02 hectare. A total of 3. 4 mt. of
. . seed ll?~ . sold to different agenci~s at the rate of Rs. I8. 0/kg and the remaining. seeds w_ere
exchanged among_ the farmers to farmers as cash and as well as kind. The net return from a
· hectare oj land of Arun maize seed production was· Rs. 23885. 0/hectare at river ·basin of
' Dhudhekhola and Rs. "19I50.0/ hectare from Manakamana -I in mid hill of Arthunge and grass ·
product of maize seed output/inpur ratio. was 2.23 and 1".83 respectively at each location during
. 2000. Similarly, net return from a hectare of land ·of maize seed was Rs. 25I59.0 at mid hill, ·
Dew·ali and Rs. 2~920.0 hectare from high hili Bhakimli. The gross. product of maize seed of
output/input ration was 2.I6 at Deurali, Palpa and 2.0I .at Bhakimli, Myagdi districts in 200I,_
Community based maize seed production program was implemented succes$fully with the active
participation of researchers, extension, liNGO 011d farmers. Farmers were highly impressed with ·
the community managed seed production, which helped to increase production and productivity
·as well as generated income of the farmers .through the seed. enterprise. Such program should be. .
. . launched in other potential areas of the couniry to meet the seed demand of the farmers ·locally
and improve the economic stahis ofthe ·hillfarme~·s.Link for e-copy: http://elibrary.narc.gov.np/?r=754 E-copies
http://nkcs.org.np/narc/dl/?r=754URL Maize variety evaluation in the eastern high hills of ars pakhribas command area during 2000-2001 / Barakoti, T.P.PermalinkPermalinkPermalinkPermalink