Abstract
A study was carried out during spring-summer seasons of 2000-2001 and 2001-2002 on the combining ability analysis in a 6x6 diallel cross of cucumber (Cucumis sativus L.) excluding reciprocals. The mean square due to general combing ability (gca) and specific combing ability (sea) were highly significant for almost all the characters indicating importance of both additive and non-additive genetic components ofvariation. specific combing ability component of variance was higher than general combing ability component ofvariance in all characters which indicated the importance of non-aoditive gene action for the control. Predictability ratio ar i average degree ofdominance observed to be less than 0.5 and more than 1 respectiyely for all the characters studied further confirmed the role ofnon-additive component of variance. The parents PI' P2 and P4 were observed to be good combiners for number of characters including yield/plant. The crosses P4 x Ps' P2 X Ps and P3 x P4 \vere most pronlising cOInbinations for different characters including yield/plant. The results indicated the importance ofheterosis breeding for effective utilization ofnon-additive gene action .
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Claims 11
Claim · model-written summary
General and specific combining ability were highly significant for almost all cucumber characters.
- Taxon
- cucumber
Cucumis sativust0 - Outcome
- general combing ability (gca) and specific combing ability (sea)e0
- Qualifier
- almost all the characterse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber (Cucumis sativus)”
e0“The mean square due to general combing ability (gca) and specific combing ability (sea) were highly significant for almost all the characters”
Claim · model-written summary
Specific combining ability variance exceeded general combining ability variance for all studied characters.
- Taxon
- cucumberCucumis sativust0
- Outcome
- specific combing ability component of variancee0
- Direction
- highere0
- Qualifier
- all characterse0
- Comparator
- general combing ability component ofvariancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber (Cucumis sativus)”
e0“specific combing ability component of variance was higher than general combing ability component ofvariance in all characters”
Claim · model-written summary
The predictability ratio was below 0.5 for all studied characters.
- Taxon
- cucumberCucumis sativust0
- Outcome
- Predictability ratioe0
- Direction
- less thane0
- Value
- 0.5e0
- Qualifier
- all the characters studiede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber (Cucumis sativus)”
e0“Predictability ratio ar i average degree ofdominance observed to be less than 0.5 and more than 1 respectiyely for all the characters studied”
Claim · model-written summary
Average degree of dominance was above 1 for all studied characters.
- Taxon
- cucumberCucumis sativust0
- Outcome
- average degree ofdominancee0
- Direction
- more thane0
- Value
- 1e0
- Qualifier
- all the characters studiede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber (Cucumis sativus)”
e0“Predictability ratio ar i average degree ofdominance observed to be less than 0.5 and more than 1 respectiyely for all the characters studied”
Claim · model-written summary
PI was a good combiner for multiple characters including yield per plant.
- Taxon
- cucumberCucumis sativust0
- Material
- PIe0
- Outcome
- good combiners for number of characters including yield/plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber (Cucumis sativus)”
e0“The parents PI' P2 and P4 were observed to be good combiners for number of characters including yield/plant”
Claim · model-written summary
P2 was a good combiner for multiple characters including yield per plant.
- Taxon
- cucumberCucumis sativust0
- Material
- P2e0
- Outcome
- good combiners for number of characters including yield/plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber (Cucumis sativus)”
e0“The parents PI' P2 and P4 were observed to be good combiners for number of characters including yield/plant”
Claim · model-written summary
P4 was a good combiner for multiple characters including yield per plant.
- Taxon
- cucumberCucumis sativust0
- Material
- P4e0
- Outcome
- good combiners for number of characters including yield/plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber (Cucumis sativus)”
e0“The parents PI' P2 and P4 were observed to be good combiners for number of characters including yield/plant”
Claim · model-written summary
P4 x Ps was a promising cross for characters including yield per plant.
- Taxon
- cucumberCucumis sativust0
- Material
- P4 x Pse0
- Outcome
- most pronlising cOInbinations for different characters including yield/plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber (Cucumis sativus)”
e0“The crosses P4 x Ps' P2 X Ps and P3 x P4 \vere most pronlising cOInbinations for different characters including yield/plant”
Claim · model-written summary
P2 X Ps was a promising cross for characters including yield per plant.
- Taxon
- cucumberCucumis sativust0
- Material
- P2 X Pse0
- Outcome
- most pronlising cOInbinations for different characters including yield/plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber (Cucumis sativus)”
e0“The crosses P4 x Ps' P2 X Ps and P3 x P4 \vere most pronlising cOInbinations for different characters including yield/plant”
Claim · model-written summary
P3 x P4 was a promising cross for characters including yield per plant.
- Taxon
- cucumberCucumis sativust0
- Material
- P3 x P4e0
- Outcome
- most pronlising cOInbinations for different characters including yield/plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber (Cucumis sativus)”
e0“The crosses P4 x Ps' P2 X Ps and P3 x P4 \vere most pronlising cOInbinations for different characters including yield/plant”
Claim · model-written summary
The authors recommend heterosis breeding to use non-additive gene action.
- Taxon
- cucumberCucumis sativust0
- Outcome
- heterosis breeding for effective utilization ofnon-additive gene actione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber (Cucumis sativus)”
e0“The results indicated the importance ofheterosis breeding for effective utilization ofnon-additive gene action”