Abstract
Abstract Contribution of nitrogen (N) and plant breeding to yield formation of oats ( Avena sativa L.) was evaluated with two years'field experiments. These consisted of four Finnish oat cultivars released between 1935 and 1988 and one breeding line. Three rates of N application were used (0, 90, and 120 kg N ha −1 ) and 19 morpho‐physiological traits, including maturity class, plant structure and plant stand structure, were assessed. The modern cultivar out‐yielded the old one under low and high N, indicating that return of old varieties into cultivation under low‐input conditions is unlikely to be feasible. An oat ideotype for low productivity conditions must be characterized. Furthermore, N contributed more than oat breeding to several traits studies. However, in some cases N appeared to affect the traits measured in a negative manner. Use of N increased production of both above‐ground vegetative biomass and panicle weight without changing HI significantly. However, plant breeding slightly reduced the production of vegetative phytomass and increased the grain: straw ratio by 10 %. Moreover, genetic gains in shortening straw length, increasing lodging resistance, and improving BYDV tolerance were partly lost when high rates of N application were used. The contribution of N and oat breeding to other morpho‐physiological traits is discussed.
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Claims 10
Claim · model-written summary
Modern oat cultivar outyielded the old cultivar under both nitrogen regimes.
- Taxon
- oats
Avena sativae1 - Material
- modern cultivare0
- Outcome
- out‐yieldede0
- Direction
- out‐yieldede0
- Qualifier
- under low and high Ne0
- Comparator
- old onee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The modern cultivar out‐yielded the old one under low and high N”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
Nitrogen increased above-ground vegetative biomass production.
- Taxon
- oatsAvena sativae1
- Treatment
- Ne0
- Outcome
- above‐ground vegetative biomasse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Use of N increased production of both above‐ground vegetative biomass and panicle weight without changing HI significantly”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
Nitrogen increased panicle weight.
- Taxon
- oatsAvena sativae1
- Treatment
- Ne0
- Outcome
- panicle weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Use of N increased production of both above‐ground vegetative biomass and panicle weight without changing HI significantly”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
Nitrogen did not significantly change harvest index.
- Taxon
- oatsAvena sativae1
- Treatment
- Ne0
- Outcome
- HIe0
- Direction
- without changinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Use of N increased production of both above‐ground vegetative biomass and panicle weight without changing HI significantly”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
Breeding slightly reduced vegetative phytomass production.
- Taxon
- oatsAvena sativae1
- Material
- plant breedinge0
- Outcome
- production of vegetative phytomasse0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant breeding slightly reduced the production of vegetative phytomass”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
Breeding increased grain-to-straw ratio by 10%.
- Taxon
- oatsAvena sativae2
- Material
- plant breedinge1
- Outcome
- grain: straw ratioe0
- Direction
- increasede0
- Value
- 10 %e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased the grain: straw ratio by 10 %”
e1“plant breeding slightly reduced the production of vegetative phytomass”
e2“oats ( Avena sativa L.)”
Claim · model-written summary
High nitrogen partly erased breeding gains in shorter straw length.
- Taxon
- oatsAvena sativae1
- Treatment
- high rates of N applicatione0
- Outcome
- shortening straw lengthe0
- Direction
- partly loste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genetic gains in shortening straw length, increasing lodging resistance, and improving BYDV tolerance were partly lost when high rates of N application were used”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
High nitrogen partly erased breeding gains in lodging resistance.
- Taxon
- oatsAvena sativae1
- Treatment
- high rates of N applicatione0
- Outcome
- lodging resistancee0
- Direction
- partly loste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genetic gains in shortening straw length, increasing lodging resistance, and improving BYDV tolerance were partly lost when high rates of N application were used”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
High nitrogen partly erased breeding gains in BYDV tolerance.
- Taxon
- oatsAvena sativae1
- Treatment
- high rates of N applicatione0
- Interactor
- BYDV
Barley yellow dwarf viruse0pathogen - Outcome
- BYDV tolerancee0
- Direction
- partly loste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genetic gains in shortening straw length, increasing lodging resistance, and improving BYDV tolerance were partly lost when high rates of N application were used”
e1“oats ( Avena sativa L.)”
Claim · model-written summary
The authors judged return of old varieties under low-input conditions unlikely to be feasible.
- Taxon
- oatsAvena sativae1
- Outcome
- return of old varieties into cultivation under low‐input conditions is unlikely to be feasiblee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“return of old varieties into cultivation under low‐input conditions is unlikely to be feasible”
e1“oats ( Avena sativa L.)”
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See all 116 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.