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Refine your searchGenetic Diversity in Nepalese Wheat Cultivars Based on Agro-Morphological Traits and Coefficients of Parentage / Joshi, Bal K. in Nepal Agriculture Research Journal, Vol. 5 (2004)
Title : Genetic Diversity in Nepalese Wheat Cultivars Based on Agro-Morphological Traits and Coefficients of Parentage Material Type: printed text Authors: Joshi, Bal K., Author ; Ashok Mudwari, Author ; Bhatta, M.R., Author Publication Date: 2004 Article on page: 7-17 p Languages : English (eng) Keywords: Agromorphological traits, coefficient of parentage, genetic diversity, Nepalese wheat cultivars Abstract: Genetic diversity between parents is necessary to derive transgenic segregants from a cross.
Coefficient of parentage (COP) and agromorphological traits (AMT) can be used to estimate
diversity among cultivars. The pedigrees of 26 bread wheat cultivars were traced back to 77
ancestors and computed coefficient of parentage for all pair-wise combinations. All the cultivars
used in the pedigree analysis were evaluated for six agromorphological traits in the National
Wheat Research Programme (NWRP), Bhairahawa, Nepal in 1996. Six quantitative variables were
used to compute dissimilarity distance matrix. Cluster and principal components analyses were
performed on the matrix of COP and AMT values. COP matrix and the matrix based on
agromorphological traits were compared. Mexico, India and Nepal were countries of the origin for
26 cultivars. A total of 77 ancestors originated from 22 different countries were used to develop
these cultivars. Most of the ancestors were aestivum (80.52%) and spring growth habit (64.94%).
Maximum dissimilarity was between RR 21 and Annapurna 3 and the most closely related pair
was Rohini and BL 1022 based on the AMT. The mean of COP for all cultivars was 0.159
0.256. The highest COP was between Annapurna 3 and Annapurna 2. Other more closely related
pairs based on COP were Kalyansona and Annapurna 2, Pasang Lhamu and Annapurna 3, UP 262
and RR 21, Vaskar and Kalyansona, NL 297 and BL 1473, Pasang Lhamu and Annapurna 1.
Completely unrelated pairs were L 52 and HD 1982, L 52 and Kalyansona, LR 64 and
Kalyansona, Kalyansona and HD 1982, PI and Kalyansona, PI and L 52, RR 21 and HD 1982, RR
21 and Kalyansona, RR 21 and PI. Fifteen ancestors were present in at least about 65% of the
cultivars. 17 ancestors had been used more frequently. Five and six clusters were formed based on
AMT and COP, respectively. Correlation coefficient between COP and AMT was 0.18 (P =
0.0168). Cultivars surveyed represent a wide range of variation for different areas of origin and
adaptation. This genetic variation may be useful for further improvement of wheat and it is
necessary to conserve them.Link for e-copy: http://elibrary.narc.gov.np/?r=72
in Nepal Agriculture Research Journal > Vol. 5 (2004) . - 7-17 p[article] Genetic Diversity in Nepalese Wheat Cultivars Based on Agro-Morphological Traits and Coefficients of Parentage [printed text] / Joshi, Bal K., Author ; Ashok Mudwari, Author ; Bhatta, M.R., Author . - 2004 . - 7-17 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 5 (2004) . - 7-17 p
Keywords: Agromorphological traits, coefficient of parentage, genetic diversity, Nepalese wheat cultivars Abstract: Genetic diversity between parents is necessary to derive transgenic segregants from a cross.
Coefficient of parentage (COP) and agromorphological traits (AMT) can be used to estimate
diversity among cultivars. The pedigrees of 26 bread wheat cultivars were traced back to 77
ancestors and computed coefficient of parentage for all pair-wise combinations. All the cultivars
used in the pedigree analysis were evaluated for six agromorphological traits in the National
Wheat Research Programme (NWRP), Bhairahawa, Nepal in 1996. Six quantitative variables were
used to compute dissimilarity distance matrix. Cluster and principal components analyses were
performed on the matrix of COP and AMT values. COP matrix and the matrix based on
agromorphological traits were compared. Mexico, India and Nepal were countries of the origin for
26 cultivars. A total of 77 ancestors originated from 22 different countries were used to develop
these cultivars. Most of the ancestors were aestivum (80.52%) and spring growth habit (64.94%).
Maximum dissimilarity was between RR 21 and Annapurna 3 and the most closely related pair
was Rohini and BL 1022 based on the AMT. The mean of COP for all cultivars was 0.159
0.256. The highest COP was between Annapurna 3 and Annapurna 2. Other more closely related
pairs based on COP were Kalyansona and Annapurna 2, Pasang Lhamu and Annapurna 3, UP 262
and RR 21, Vaskar and Kalyansona, NL 297 and BL 1473, Pasang Lhamu and Annapurna 1.
Completely unrelated pairs were L 52 and HD 1982, L 52 and Kalyansona, LR 64 and
Kalyansona, Kalyansona and HD 1982, PI and Kalyansona, PI and L 52, RR 21 and HD 1982, RR
21 and Kalyansona, RR 21 and PI. Fifteen ancestors were present in at least about 65% of the
cultivars. 17 ancestors had been used more frequently. Five and six clusters were formed based on
AMT and COP, respectively. Correlation coefficient between COP and AMT was 0.18 (P =
0.0168). Cultivars surveyed represent a wide range of variation for different areas of origin and
adaptation. This genetic variation may be useful for further improvement of wheat and it is
necessary to conserve them.Link for e-copy: http://elibrary.narc.gov.np/?r=72
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 : Performance of bush type French bean in the hills of Nepal Material Type: printed text Authors: Paudel, K.B., Author ; J.N. Chaudhary, Author ; Gautam, I.P., Author ; K.P Upadhaya, Author ; B Khatri, Author Pagination: 227-234 p. Languages : English (eng) Keywords: Agromorphological traits, french bean, hilly areas Abstract: Eight genotypes of bush type French bean collected from Mustang, Myagdi and Kaski, Nepal and nine genotypes introduced from the USA were evaluated under observation nursery at Rising Patan (450 masl), Tanahu, Outreach Research (OR) site of Agriculture Research Station (ARS), Lumle, Kaski during post monsoon of 2000. The promising entries from observation nurseries were evaluated under co-ordinated varietal trial at Rising Patan, ARS, Pakhribas and ARS, Lumle during spring season (February 2001), summer seasons (April 2001) and pre and post-monsoon season (April and August 2001) respectively. The performances of these genotypes were almost similar at all locations. The most promising genotypes were LB-25, LB-27, S-9 and Pant Anupama in terms of yield and other horticultural traits. Considering overall performance, pod length, pod diameter, fibre content, marketable fresh pods yield and resistant to bean rust, genotype LB-25 was superior among the tested genotypes.
Link for e-copy: http://elibrary.narc.gov.np/?r=1146 Performance of bush type French bean in the hills of Nepal [printed text] / Paudel, K.B., Author ; J.N. Chaudhary, Author ; Gautam, I.P., Author ; K.P Upadhaya, Author ; B Khatri, Author . - [s.d.] . - 227-234 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: Agromorphological traits, french bean, hilly areas Abstract: Eight genotypes of bush type French bean collected from Mustang, Myagdi and Kaski, Nepal and nine genotypes introduced from the USA were evaluated under observation nursery at Rising Patan (450 masl), Tanahu, Outreach Research (OR) site of Agriculture Research Station (ARS), Lumle, Kaski during post monsoon of 2000. The promising entries from observation nurseries were evaluated under co-ordinated varietal trial at Rising Patan, ARS, Pakhribas and ARS, Lumle during spring season (February 2001), summer seasons (April 2001) and pre and post-monsoon season (April and August 2001) respectively. The performances of these genotypes were almost similar at all locations. The most promising genotypes were LB-25, LB-27, S-9 and Pant Anupama in terms of yield and other horticultural traits. Considering overall performance, pod length, pod diameter, fibre content, marketable fresh pods yield and resistant to bean rust, genotype LB-25 was superior among the tested genotypes.
Link for e-copy: http://elibrary.narc.gov.np/?r=1146 E-copies
http://nkcs.org.np/narc/dl/?r=1146URL
Title : Selection Of Rice Bean Landraces For Post Rainy Season In Tanahun,Nepal Material Type: printed text Authors: N.H Ghimire, Author Publisher: Chitwan : Tribhuvan University Publication Date: 2011 Pagination: 93 p. Languages : English (eng) Keywords: research in ricebean nepal; seed rate; agromorphological parameters;yield and yield attributing characters; Link for e-copy: http://elibrary.narc.gov.np/?r=3229 Selection Of Rice Bean Landraces For Post Rainy Season In Tanahun,Nepal [printed text] / N.H Ghimire, Author . - Chitwan : Tribhuvan University, 2011 . - 93 p.
Languages : English (eng)
Keywords: research in ricebean nepal; seed rate; agromorphological parameters;yield and yield attributing characters; Link for e-copy: http://elibrary.narc.gov.np/?r=3229 Copies (1)
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