Abstract
Abstract The yield and quality of barley ( Hordeum vulgare L.) are greatly influenced by N fertilization. The yield of dry matter, mineral nutrients, and protein are generally increased but the concentration of the essential amino acid lysine in the protein is usually decreased by increasing the supply of N. However, the effect of N may vary between genotypes. The purpose of this study was to compare the response to N of a high‐lysine genotype to that of normal barley. The high‐lysine Risø mutant 1508 and its parent variety ‘Bomi’ were grown in plastic pots containing 22 kg sandy loam (Gray‐Brown Podsolic soil). Nitrogen was supplied as NH4NO3 in amounts of: O, 1, 2, 3, 4, and 6 g N/pot. The yield of dry matter increased with N fertilization up to 3 to 4 g N/pot after which it declined with additional N‐supply, while the yield of protein continued to increase. Lower grain yield of the mutant was almost entirely caused by a smaller grain size. The concentration of lysine in Bomi protein declined when protein production was increased by application of N fertilizer, whereas in the mutant it remained nearly constant. The high‐lysine character was thus enhanced when protein content in the grain was increased. The concentrations of P, Ca, and Mg were higher while that of K was lower in the grain of the mutant 1508 than in the grain of the parent variety Bomi.
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Claims 8
Claim · model-written summary
Barley dry matter yield increased through 3 to 4 g N/pot, then declined with more nitrogen.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- N fertilizatione0
- Outcome
- yield of dry mattere0
- Direction
- increasede0
- Qualifier
- up to 3 to 4 g N/pot after which it declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The yield of dry matter increased with N fertilization up to 3 to 4 g N/pot after which it declined with additional N‐supply”
t0“Barley”
Claim · model-written summary
Barley protein yield continued increasing with nitrogen supply.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- N fertilizatione1
- Outcome
- yield of proteine0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield of protein continued to increase”
t0“Barley”
e1“The yield of dry matter increased with N fertilization up to 3 to 4 g N/pot after which it declined with additional N‐supply”
Claim · model-written summary
The mutant had lower grain yield than Bomi mainly because of smaller grain size.
- Taxon
- barleyHordeum vulgaret0
- Material
- mutante0
- Outcome
- grain yielde0
- Direction
- Lowere0
- Qualifier
- smaller grain sizee0
- Comparator
- Bomie2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower grain yield of the mutant was almost entirely caused by a smaller grain size”
t0“Barley”
e2“The concentration of lysine in Bomi protein declined when protein production was increased by application of N fertilizer”
Claim · model-written summary
Lysine concentration in Bomi protein declined as nitrogen raised protein production.
- Taxon
- barleyHordeum vulgaret0
- Material
- Bomie0
- Treatment
- application of N fertilizere0
- Outcome
- concentration of lysine in Bomi proteine0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of lysine in Bomi protein declined when protein production was increased by application of N fertilizer”
t0“Barley”
Claim · model-written summary
Mutant protein lysine concentration remained nearly constant as nitrogen raised protein production.
- Taxon
- barleyHordeum vulgaret0
- Material
- mutante0
- Treatment
- N fertilizatione1
- Outcome
- concentration of lysinee2
- Direction
- remained nearly constante0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas in the mutant it remained nearly constant”
t0“Barley”
e1“The yield of dry matter increased with N fertilization up to 3 to 4 g N/pot after which it declined with additional N‐supply”
e2“The concentration of lysine in Bomi protein declined when protein production was increased by application of N fertilizer”
Claim · model-written summary
Higher grain protein content enhanced the high-lysine character.
- Taxon
- barleyHordeum vulgaret0
- Organ / stage
- graine0
- Compound
- protein contente0
- Outcome
- high‐lysine charactere0
- Direction
- enhancede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The high‐lysine character was thus enhanced when protein content in the grain was increased”
t0“Barley”
Claim · model-written summary
Mutant grain had higher P, Ca and Mg concentrations than Bomi.
- Taxon
- barleyHordeum vulgaret0
- Material
- mutant 1508e0
- Outcome
- concentrations of P, Ca, and Mge0
- Direction
- highere0
- Comparator
- parent variety Bomie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentrations of P, Ca, and Mg were higher while that of K was lower in the grain of the mutant 1508 than in the grain of the parent variety Bomi”
t0“Barley”
Claim · model-written summary
Mutant grain had lower K concentration than Bomi.
- Taxon
- barleyHordeum vulgaret0
- Material
- mutant 1508e0
- Outcome
- Ke0
- Direction
- lowere0
- Comparator
- parent variety Bomie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentrations of P, Ca, and Mg were higher while that of K was lower in the grain of the mutant 1508 than in the grain of the parent variety Bomi”
t0“Barley”
The same questions in other papers
nitrogen · quality: protein · Hordeum vulgare (barley)Positive and negative results
5 papers in the same direction as this paper · 66 in the opposite direction
- positive
- positive
- positive
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See all 72 papers →fertilization · quality: protein · Hordeum vulgare (barley)Positive and negative results
63 papers in the same direction as this paper · 14 in the opposite direction · 1 reporting no difference from an alternative
- positive
- no effect
- negative
75 papers more in this group
See all 79 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.