Abstract
Seven cytoplasmic male-sterile and six-branched male restorer lines of the improved oil sunflower were hybridized with 7×6 incomplete diallel,42 F1hybrids were further used to estimate their general combining ability(GCA) 、specific combining ability(SCA) and total combining ability(TCA) effects on main economic traits of oil Sunflower.The components of variance for combining ability revealed that mean squares were highly significant for all of the cross combinations,showed that the preponderance of additive gene action played the leading role in leaves per plant,kernel oil content and kernel rate,and indicated the preponderance of non-additive gene action was predominant in plant height,head diameter and growth duration,while seed yield per plant and 1 000-seed weight were attributed to additive gene action and non-additive gene action variance.GCA effects of the parents revealed that among the CMS LQ194A and LQ252A and among the restorers Y109,9706R,F15-1R were found to be promising parents.Based on significant SCA and TCA effects in components analysis,seven hybrids LQ218×9706R,LQ28×Y109,LQ28×9706R,LQ178×Y109,LQ218×F15-1R,LQ28×F15-1R and LQ28× Y112 were identified as distinct for comprehensive traits and heredity characteristics.The CMS played a main role in the formation of the F0traits of the head diameter and 1 000-seed weight.The result of correlation analysis indicated a significant negative correlation between 1 000-seed weight and kernel rate and a highly significant positive correlation between 1 000-seed weight and seed yield per plant.The phenotypic correlations and genotypic correlations were consistent.
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Claims 10
Claim · model-written summary
Additive gene action predominated for leaf number, kernel oil content, and kernel rate.
Verbatim
e0“the preponderance of additive gene action played the leading role in leaves per plant,kernel oil content and kernel rate”
t0“oil sunflower”
Claim · model-written summary
Nonadditive action predominated for plant height, head diameter, and growth duration.
Verbatim
e0“non-additive gene action was predominant in plant height,head diameter and growth duration”
t0“oil sunflower”
Claim · model-written summary
Both additive and nonadditive variance contributed to seed yield and thousand-seed weight.
Verbatim
e0“seed yield per plant and 1 000-seed weight were attributed to additive gene action and non-additive gene action variance”
t0“oil sunflower”
Claim · model-written summary
LQ194A and LQ252A were promising CMS parents.
Verbatim
e0“among the CMS LQ194A and LQ252A and among the restorers Y109,9706R,F15-1R were found to be promising parents”
t0“oil sunflower”
Claim · model-written summary
Y109, 9706R, and F15-1R were promising restorers.
Verbatim
e0“among the CMS LQ194A and LQ252A and among the restorers Y109,9706R,F15-1R were found to be promising parents”
t0“oil sunflower”
Claim · model-written summary
Seven hybrids were identified for comprehensive traits.
Verbatim
e0“seven hybrids LQ218×9706R,LQ28×Y109,LQ28×9706R,LQ178×Y109,LQ218×F15-1R,LQ28×F15-1R and LQ28× Y112 were identified as distinct for comprehensive traits and heredity characteristics”
t0“oil sunflower”
Claim · model-written summary
CMS was important in formation of head diameter and thousand-seed weight traits.
Verbatim
e0“The CMS played a main role in the formation of the F0traits of the head diameter and 1 000-seed weight”
t0“oil sunflower”
Claim · model-written summary
Thousand-seed weight and kernel rate were negatively correlated.
Verbatim
e0“a significant negative correlation between 1 000-seed weight and kernel rate”
t0“oil sunflower”
Claim · model-written summary
Thousand-seed weight and seed yield were positively correlated.
Verbatim
e0“a highly significant positive correlation between 1 000-seed weight and seed yield per plant”
t0“oil sunflower”
Claim · model-written summary
Phenotypic and genotypic correlations agreed.
Verbatim
e0“The phenotypic correlations and genotypic correlations were consistent”
t0“oil sunflower”