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Author ,Thapa, B. |
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Refine your searchDiallel analysis for estimation of combining ability and gene action in fine-aromatic rice / Sah, R.P.
in Rice research in Nepal : Proceedings of 24th National Summer Crops Research Workshop, Khumaltar, Lalitpur, 30-31 June 2004 / Adhikari, N.P.
Title : Diallel analysis for estimation of combining ability and gene action in fine-aromatic rice Material Type: printed text Authors: Sah, R.P. ; Koirala, K.B., Author ; Ghimire, K.H., Author ; ,Thapa, B., Author ; Bhandari, H.S., Author ; Akhtar, T., Author Pagination: 105-112 p. Languages : English (eng) Abstract: Combining ability analysis was done using 10 fine-aromatic rice genotypes in a partial
diallel crossing design to estimate General Combining Ability (GCA), Specific
Combining Ability (SCA) and nature of gene· action to heip in breeding fine-aromatic
rice varieties. Ctmsiderable variation among parents and crosses (F1s) for agronomic
parameters were observed The .parental mean for panicle weight (g) was 2.83 g while
the F1s was 3.16 g with an average heterosis of 0. 3 g (11. 3%) and a maximum heterosis
of 3.17 g (112.0%). Panical weight (g) being the important yield component was
analysed to estimate GCA, SCA and gene effects. The analysis of variance revealed
significant effects (P=0.01) due to GCA and SCA. The GCA estimates of parents
ARC10863 (0. 77) and IR43850 (0.33) were significant and positive, while those of ARC
10796 (-0.20) and Khumal-4 .(-0.28) were significant (P=0.01) Q!ld negative. The
superior crosses with hi~h positive effect on panicle weight were from the abo~e parents.
The additive variance (cl A) estimate was 0.30 and that of dominance variance (rl D) was
3. 79, thereby indicating low genetic he"itability (0. 064), and presence of both additive
and non-additive gene effects on·panicle weight of fine-aromatic rice. Implications of
this study in the selection of superior parents and crosses, developing suitable breeding
strategy and approaches for increased effectiveness and efficiency in breeding have
been discussedLink for e-copy: http://elibrary.narc.gov.np/?r=1092 Diallel analysis for estimation of combining ability and gene action in fine-aromatic rice [printed text] / Sah, R.P. ; Koirala, K.B., Author ; Ghimire, K.H., Author ; ,Thapa, B., Author ; Bhandari, H.S., Author ; Akhtar, T., Author . - [s.d.] . - 105-112 p.
in Rice research in Nepal : Proceedings of 24th National Summer Crops Research Workshop, Khumaltar, Lalitpur, 30-31 June 2004 / Adhikari, N.P.
Languages : English (eng)
Abstract: Combining ability analysis was done using 10 fine-aromatic rice genotypes in a partial
diallel crossing design to estimate General Combining Ability (GCA), Specific
Combining Ability (SCA) and nature of gene· action to heip in breeding fine-aromatic
rice varieties. Ctmsiderable variation among parents and crosses (F1s) for agronomic
parameters were observed The .parental mean for panicle weight (g) was 2.83 g while
the F1s was 3.16 g with an average heterosis of 0. 3 g (11. 3%) and a maximum heterosis
of 3.17 g (112.0%). Panical weight (g) being the important yield component was
analysed to estimate GCA, SCA and gene effects. The analysis of variance revealed
significant effects (P=0.01) due to GCA and SCA. The GCA estimates of parents
ARC10863 (0. 77) and IR43850 (0.33) were significant and positive, while those of ARC
10796 (-0.20) and Khumal-4 .(-0.28) were significant (P=0.01) Q!ld negative. The
superior crosses with hi~h positive effect on panicle weight were from the abo~e parents.
The additive variance (cl A) estimate was 0.30 and that of dominance variance (rl D) was
3. 79, thereby indicating low genetic he"itability (0. 064), and presence of both additive
and non-additive gene effects on·panicle weight of fine-aromatic rice. Implications of
this study in the selection of superior parents and crosses, developing suitable breeding
strategy and approaches for increased effectiveness and efficiency in breeding have
been discussedLink for e-copy: http://elibrary.narc.gov.np/?r=1092 E-copies
http://nkcs.org.np/narc/dl/?r=1092URL
in Rice research in Nepal : Proceedings of 24th National Summer Crops Research Workshop, Khumaltar, Lalitpur, 30-31 June 2004 / Adhikari, N.P.
Title : Enhancing yield potentials of rice under rainfed environments of western hills Material Type: printed text Authors: Sah, R.P. ; Koirala, K.B., Author ; Ghimire, K.H., Author ; ,Thapa, B., Author ; Bhandari, H.S., Author ; R Poudel, Author ; Bhattarai M, Author Pagination: 114-125 p. Languages : English (eng) Abstract: In order to develop/identify high yieldingfarmers'preferred genotypes for the river basin
and low hill environments, three activities namely coordinated varietal trials (CVTs),
farmers' field trials (FFTs) and farmers acceptance Tests (FATs) were carried out. Based
on the overall results, genotypes NR 1769-6-3-2-2-3, NR 1769-2-4, NR 1558 and NR 1190
for rainfed environments were found superior to local and standard checks in grain yield,
agronomic and quality traits. These varieties have widely been accepted by the farmers.
On-farm seed multiplication of these elite lines has been carried out to help wider adoption
and.dissemination of these improved lines in target environments.Link for e-copy: http://elibrary.narc.gov.np/?r=1093 Enhancing yield potentials of rice under rainfed environments of western hills [printed text] / Sah, R.P. ; Koirala, K.B., Author ; Ghimire, K.H., Author ; ,Thapa, B., Author ; Bhandari, H.S., Author ; R Poudel, Author ; Bhattarai M, Author . - [s.d.] . - 114-125 p.
in Rice research in Nepal : Proceedings of 24th National Summer Crops Research Workshop, Khumaltar, Lalitpur, 30-31 June 2004 / Adhikari, N.P.
Languages : English (eng)
Abstract: In order to develop/identify high yieldingfarmers'preferred genotypes for the river basin
and low hill environments, three activities namely coordinated varietal trials (CVTs),
farmers' field trials (FFTs) and farmers acceptance Tests (FATs) were carried out. Based
on the overall results, genotypes NR 1769-6-3-2-2-3, NR 1769-2-4, NR 1558 and NR 1190
for rainfed environments were found superior to local and standard checks in grain yield,
agronomic and quality traits. These varieties have widely been accepted by the farmers.
On-farm seed multiplication of these elite lines has been carried out to help wider adoption
and.dissemination of these improved lines in target environments.Link for e-copy: http://elibrary.narc.gov.np/?r=1093 E-copies
http://nkcs.org.np/narc/dl/?r=1093URL
Title : Rice varietal development for low temperature tolerance Material Type: printed text Authors: Bhandari, H.S. ; Sah, R.P. ; ,Thapa, B. Publisher: Pokhara : LARC Publication Date: 2000 Pagination: 14 Keywords: Rice; Varieties; Temperature resistance; Cereals Rice varietal development for low temperature tolerance [printed text] / Bhandari, H.S. ; Sah, R.P. ; ,Thapa, B. . - Pokhara : LARC, 2000 . - 14.
Keywords: Rice; Varieties; Temperature resistance; Cereals Copies (1)
Barcode Call number Media type Location Section Status NR-2675 NR-2675, Document NARC Library Documents Available
