Abstract
S ummary Barley plants were pruned selectively to give root systems with relative growth rates that varied two‐fold. Rates of elongation of the seminal root axes were unaffected. Respiration rate was highest in the fast‐growing roots, but there was no change in the proportion of carbon entering the root that was subsequently lost in respiration. Soluble sugar contents were greater in fast than in slow growing plants, but the rate of uptake of exogenously supplied sucrose and glutamine was highest where root growth rate was reduced by pruning of the shoot. Turnover of sugars in the vacuole was slower in roots with reduced growth rate.
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Claims 7
Claim · model-written summary
Selective pruning produced a twofold variation in relative root growth rates.
- Taxon
- Barley
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Hordeum vulgaree0 - Organ / stage
- root systemse0
- Treatment
- pruned selectivelye0
- Outcome
- relative growth ratese0
- Direction
- variede0
- Value
- two‐folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Barley plants were pruned selectively to give root systems with relative growth rates that varied two‐fold”
Claim · model-written summary
Pruning did not change seminal root axis elongation rates.
- Taxon
- BarleyHordeum vulgaree0
- Treatment
- pruned selectivelye0
- Outcome
- Rates of elongation of the seminal root axese1
- Direction
- unaffectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Barley plants were pruned selectively”
e1“Rates of elongation of the seminal root axes were unaffected”
Claim · model-written summary
Fast growing barley roots had the highest respiration rate.
- Taxon
- BarleyHordeum vulgaree0
- Organ / stage
- rootse1
- Outcome
- Respiration ratee1
- Direction
- higheste1
- Comparator
- fast‐growing rootse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Barley plants were pruned selectively”
e1“Respiration rate was highest in the fast‐growing roots”
Claim · model-written summary
The fraction of carbon entering barley roots that was lost through respiration did not change.
- Taxon
- BarleyHordeum vulgaree0
- Treatment
- pruned selectivelye0
- Outcome
- proportion of carbon entering the root that was subsequently lost in respiratione1
- Direction
- no changee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Barley plants were pruned selectively”
e1“there was no change in the proportion of carbon entering the root that was subsequently lost in respiration”
Claim · model-written summary
Fast growing barley plants had more soluble sugars than slow growing plants.
- Taxon
- BarleyHordeum vulgaree0
- Outcome
- Soluble sugar contentse1
- Direction
- greatere1
- Comparator
- slow growing plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Barley plants were pruned selectively”
e1“Soluble sugar contents were greater in fast than in slow growing plants”
Claim · model-written summary
Shoot pruning that reduced barley root growth gave the highest uptake rate of externally supplied sucrose and glutamine.
- Taxon
- BarleyHordeum vulgaree0
- Treatment
- pruning of the shoote1
- Outcome
- rate of uptake of exogenously supplied sucrose and glutaminee1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Barley plants were pruned selectively”
e1“the rate of uptake of exogenously supplied sucrose and glutamine was highest where root growth rate was reduced by pruning of the shoot”
Claim · model-written summary
Sugar turnover in the vacuole was slower in barley roots with reduced growth rate.
- Taxon
- BarleyHordeum vulgaree0
- Organ / stage
- rootse1
- Outcome
- Turnover of sugars in the vacuolee1
- Direction
- slowere1
- Comparator
- reduced growth ratee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Barley plants were pruned selectively”
e1“Turnover of sugars in the vacuole was slower in roots with reduced growth rate”
The same questions in other papers
pruning · growth · Hordeum vulgare (barley)Positive and negative results
4 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
8 papers more in this group
See all 12 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.