Abstract
Abstract Crop strains with high values for the selected trait but unacceptable agronomic characteristics are not useful as varieties. In this study, we determined whether selection for groat‐oil content in oat ( Avena sativa L.) via three recurrent selection regimes caused associated changes in 10 agronomic traits. Random lines of each cycle of selection of each regime were evaluated in a replicated field experiment at two locations. Biomass, grain yield, groat yield, and test weight decreased in all three regimes. Seed weight and plant height decreased in two regimes, and groat fraction in one. Oil yield increased in two regimes and decreased in the other. Plants headed earlier in one and later in another regime over cycles of selection. No changes in harvest index occurred. Heritabilities and genetic variances were relatively high for all traits in each regime. Factor analysis of the phenotypic correlation matrices indicated that simultaneous increases in grain yield and in groat‐oil content are possible, that continuous selection for groat‐oil content decreases groat fraction and test weight, and that seed weight is strongly and negatively associated with groat‐oil content. A new recurrent selection regime for increasing groat‐oil content of oat that may overcome the negative responses of agronomic traits was proposed.
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Claims 13
Claim · model-written summary
Biomass, grain yield, groat yield and test weight decreased under all three regimes.
- Taxon
- oat
Avena sativat0 - Treatment
- three regimese0
- Outcome
- Biomass, grain yield, groat yield, and test weighte0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biomass, grain yield, groat yield, and test weight decreased in all three regimes”
t0“Oat”
Claim · model-written summary
Seed weight and plant height decreased in two regimes.
- Taxon
- oatAvena sativat0
- Treatment
- two regimese0
- Outcome
- Seed weight and plant heighte0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed weight and plant height decreased in two regimes”
t0“Oat”
Claim · model-written summary
Groat fraction decreased in one regime.
- Taxon
- oatAvena sativat0
- Treatment
- onee0
- Outcome
- groat fractione0
- Direction
- decreaseinferrede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“groat fraction in one”
t0“Oat”
Claim · model-written summary
Oil yield increased in two regimes.
- Taxon
- oatAvena sativat0
- Treatment
- two regimese0
- Outcome
- Oil yielde0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oil yield increased in two regimes”
t0“Oat”
Claim · model-written summary
Oil yield decreased in the other regime.
- Taxon
- oatAvena sativat0
- Treatment
- the othere0
- Outcome
- Oil yielde0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oil yield increased in two regimes and decreased in the other”
t0“Oat”
Claim · model-written summary
Heading became earlier in one regime.
- Taxon
- oatAvena sativat0
- Treatment
- onee0
- Outcome
- headede0
- Direction
- earliere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants headed earlier in one and later in another regime over cycles of selection”
t0“Oat”
Claim · model-written summary
Heading became later in another regime.
- Taxon
- oatAvena sativat0
- Treatment
- another regimee0
- Outcome
- headede0
- Direction
- latere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants headed earlier in one and later in another regime over cycles of selection”
t0“Oat”
Claim · model-written summary
Harvest index did not change.
- Taxon
- oatAvena sativat0
- Outcome
- harvest indexe0
- Direction
- No changese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No changes in harvest index occurred”
t0“Oat”
Claim · model-written summary
Heritabilities and genetic variances were relatively high for all traits.
- Taxon
- oatAvena sativat0
- Outcome
- Heritabilities and genetic variancese0
- Direction
- relatively highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Heritabilities and genetic variances were relatively high for all traits in each regime”
t0“Oat”
Claim · model-written summary
Factor analysis indicated simultaneous gains in grain yield and oil content were possible.
- Taxon
- oatAvena sativat0
- Outcome
- simultaneous increases in grain yield and in groat‐oil content are possiblee0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Factor analysis of the phenotypic correlation matrices indicated that simultaneous increases in grain yield and in groat‐oil content are possible”
t0“Oat”
Claim · model-written summary
Continuous oil selection decreased groat fraction and test weight.
- Taxon
- oatAvena sativat0
- Treatment
- continuous selection for groat‐oil contente0
- Outcome
- groat fraction and test weighte0
- Direction
- decreasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“continuous selection for groat‐oil content decreases groat fraction and test weight”
t0“Oat”
Claim · model-written summary
Seed weight was strongly negatively associated with groat oil content.
- Taxon
- oatAvena sativat0
- Treatment
- groat‐oil contente0
- Outcome
- seed weighte0
- Direction
- negativelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed weight is strongly and negatively associated with groat‐oil content”
t0“Oat”
Claim · model-written summary
The authors proposed a new recurrent selection regime to improve oil without negative agronomic responses.
- Taxon
- oatAvena sativae0
- Outcome
- new recurrent selection regime for increasing groat‐oil content of oate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A new recurrent selection regime for increasing groat‐oil content of oat that may overcome the negative responses of agronomic traits was proposed”