Abstract
Combining ability studies helps in selection of appropriate parents for a cross and also indicates suitable breeding procedure for handling a cross to develop a cultivar. In the present investigation, combining ability estimates for yield and related traits have been analyzed in 45 F 1 and 45 F 2 progenies derived from 10 parent half diallel mating design. The analysis of variances showed highly significant differences among the genotypes for all the traits studied. Significant differences have been found for general combining ability (GCA) effects among the parents as well as specific combining ability (SCA) effects among the hybrids for all the studied traits. The GCA and SCA components of variance were significant for all the traits. However, the magnitude of GCA variance was higher than SCA suggested the preponderance of additive gene action for most of the traits. The GCA:SCA ratio revealed predominance of additive gene effects in both the generations except seed weight in F 1 and husk weight and oil content in F 2 generation. Among all the parents, EC-1392, JLS-9 and JWR-17 were the best general combiners for branches/plant, capsules/plant and seeds/capsule and average to high combiners for other traits in both the generations. Most of the specific crosses for yield related traits as well as oil content involved high/average, average/average and average/poor general combiners. These crosses combinations could be utilized for further use in breeding program in combination with the parents having good general combining ability for improvement in yield of linseed.
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Claims 12
Claim · model-written summary
Genotypes differed highly significantly for all the traits studied.
- Taxon
- linseedt0
- Material
- genotypese0
- Outcome
- differences among the genotypes for all the traits studiede0
Not reportedDirection
Verbatim
t0“linseed (Linum usitatissiumu L.)”
e0“The analysis of variances showed highly significant differences among the genotypes for all the traits studied”
Claim · model-written summary
GCA effects differed significantly among the parents.
Not reportedDirection
Verbatim
t0“linseed (Linum usitatissiumu L.)”
e1“Significant differences have been found for general combining ability (GCA) effects among the parents as well as specific combining ability (SCA) effects among the hybrids for all the studied traits”
Claim · model-written summary
SCA effects differed significantly among the hybrids.
Not reportedDirection
Verbatim
t0“linseed (Linum usitatissiumu L.)”
e1“Significant differences have been found for general combining ability (GCA) effects among the parents as well as specific combining ability (SCA) effects among the hybrids for all the studied traits”
Claim · model-written summary
GCA and SCA components of variance were significant for all traits.
Not reportedDirection
Verbatim
t0“linseed (Linum usitatissiumu L.)”
e2“The GCA and SCA components of variance were significant for all the traits”
Claim · model-written summary
GCA variance was higher than SCA variance for most traits.
Verbatim
t0“linseed (Linum usitatissiumu L.)”
e3“the magnitude of GCA variance was higher than SCA suggested the preponderance of additive gene action for most of the traits”
Claim · model-written summary
Additive gene action predominates for most traits.
Verbatim
t0“linseed (Linum usitatissiumu L.)”
e3“the magnitude of GCA variance was higher than SCA suggested the preponderance of additive gene action for most of the traits”
Claim · model-written summary
Predominance of additive gene effects was revealed in both generations, except seed weight in F1 and husk weight and oil content in F2.
- Taxon
- linseedt0
- Material
- 45 F 1 and 45 F 2 progeniese5
- Outcome
- predominance of additive gene effectse4
- Qualifier
- except seed weight in F 1 and husk weight and oil content in F 2 generatione4
Not reportedDirection
Verbatim
t0“linseed (Linum usitatissiumu L.)”
e4“The GCA:SCA ratio revealed predominance of additive gene effects in both the generations except seed weight in F 1 and husk weight and oil content in F 2 generation”
e5“combining ability estimates for yield and related traits have been analyzed in 45 F 1 and 45 F 2 progenies derived from 10 parent half diallel mating design”
Claim · model-written summary
EC-1392 was one of the best general combiners for branches/plant, capsules/plant and seeds/capsule.
Verbatim
t0“linseed (Linum usitatissiumu L.)”
e5“EC-1392, JLS-9 and JWR-17 were the best general combiners for branches/plant, capsules/plant and seeds/capsule and average to high combiners for other traits in both the generations”
Claim · model-written summary
JLS-9 was one of the best general combiners for branches/plant, capsules/plant and seeds/capsule.
Verbatim
t0“linseed (Linum usitatissiumu L.)”
e5“EC-1392, JLS-9 and JWR-17 were the best general combiners for branches/plant, capsules/plant and seeds/capsule and average to high combiners for other traits in both the generations”
Claim · model-written summary
JWR-17 was one of the best general combiners for branches/plant, capsules/plant and seeds/capsule.
Verbatim
t0“linseed (Linum usitatissiumu L.)”
e5“EC-1392, JLS-9 and JWR-17 were the best general combiners for branches/plant, capsules/plant and seeds/capsule and average to high combiners for other traits in both the generations”
Claim · model-written summary
Most specific crosses for yield-related traits and oil content involved high/average, average/average and average/poor general combiners.
Verbatim
t0“linseed (Linum usitatissiumu L.)”
e6“Most of the specific crosses for yield related traits as well as oil content involved high/average, average/average and average/poor general combiners”
Claim · model-written summary
The specific cross combinations could be utilized for further use in the breeding program.
Verbatim
t0“linseed (Linum usitatissiumu L.)”
e7“These crosses combinations could be utilized for further use in breeding program in combination with the parents having good general combining ability for improvement in yield of linseed”