Abstract
Decapitation and subsequent removal of unfolding leaves of sugar-beet plants (Beta vulgaris L.) at 2-, 4-, 14-, and 31-leaf stages resulted in much greater growth of the remaining leaves, the effect being more pronounced the less advanced the leaves at the time of treatment. A two- to three-fold increase in area was accompanied by a five- to six-fold increase in weight. Both treatments caused a transient increase in the rate of growth of the root, the promotive effect being sustained for a longer period at the later stages of growth when a greater photo-synthetic surface was present than earlier. The results suggest that these promotive effects came mainly from the availability and distribution of substrates following the retardation of growth processes in the shoot and the removal of the shoot apex acting as a ‘sink’ of unknown size. Removal of part of the shoot resulted in proportionately greater growth of that remaining, whereas removal of part of the root had no effect on the shoot unless it was reduced to one quarter. The change in the amount of shoot had no significant effect on the growth of the root, nor was there a compensating effect on the growth of the remaining root after more than one half of it had been removed. Removal of more than one third of the root resulted in an appreciable decrease in the net assimilation rate, while removal of part of the shoot of plants with the same root ‘sink strength’ led to an increased net assimilation rate.
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Decapitation and removal of unfolding leaves increased growth of remaining sugar-beet leaves, especially at less advanced stages.
- Taxon
- sugar-beet plants
Beta vulgaris subsp. vulgarise0 - Organ / stage
- 2-, 4-, 14-, and 31-leaf stagese0
- Treatment
- Decapitation and subsequent removal of unfolding leavese0
- Outcome
- growth of the remaining leavese0
- Direction
- much greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Decapitation and subsequent removal of unfolding leaves of sugar-beet plants (Beta vulgaris L.) at 2-, 4-, 14-, and 31-leaf stages resulted in much greater growth of the remaining leaves, the effect being more pronounced the less advanced the leaves at the time of treatment”
Claim · model-written summary
Remaining leaf area increased two to threefold.
- Taxon
- sugar-beet plantsBeta vulgaris subsp. vulgarise1
- Treatment
- Decapitation and subsequent removal of unfolding leavese2
- Outcome
- areae0
- Direction
- increasee0
- Value
- two- to three-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A two- to three-fold increase in area”
e1“sugar-beet plants (Beta vulgaris L.)”
e2“Decapitation and subsequent removal of unfolding leaves”
Claim · model-written summary
Remaining leaf weight increased five to sixfold.
- Taxon
- sugar-beet plantsBeta vulgaris subsp. vulgarise1
- Treatment
- Decapitation and subsequent removal of unfolding leavese2
- Outcome
- weighte0
- Direction
- increasee0
- Value
- five- to six-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a five- to six-fold increase in weight”
e1“sugar-beet plants (Beta vulgaris L.)”
e2“Decapitation and subsequent removal of unfolding leaves”
Claim · model-written summary
Both shoot treatments transiently increased root growth rate, with longer promotion at later growth stages.
- Taxon
- sugar-beet plantsBeta vulgaris subsp. vulgarise1
- Treatment
- Decapitation and subsequent removal of unfolding leavese2
- Outcome
- rate of growth of the roote0
- Direction
- increasee0
- Qualifier
- sustained for a longer period at the later stages of growthe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both treatments caused a transient increase in the rate of growth of the root, the promotive effect being sustained for a longer period at the later stages of growth”
e1“sugar-beet plants (Beta vulgaris L.)”
e2“Decapitation and subsequent removal of unfolding leaves”
Claim · model-written summary
The authors attributed growth promotion mainly to changed substrate availability and distribution after shoot growth was retarded and the shoot apex removed.
- Taxon
- sugar-beet plantsBeta vulgaris subsp. vulgarise1
- Outcome
- promotive effectse0
- Qualifier
- availability and distribution of substratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these promotive effects came mainly from the availability and distribution of substrates following the retardation of growth processes in the shoot and the removal of the shoot apex acting as a ‘sink’ of unknown size”
e1“sugar-beet plants (Beta vulgaris L.)”
Claim · model-written summary
Partial shoot removal caused proportionately greater growth of the remaining shoot.
- Taxon
- sugar-beet plantsBeta vulgaris subsp. vulgarise1
- Treatment
- Removal of part of the shoote0
- Outcome
- growth of that remaininge0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Removal of part of the shoot resulted in proportionately greater growth of that remaining”
e1“sugar-beet plants (Beta vulgaris L.)”
Claim · model-written summary
Partial root removal affected shoot growth only when the root was reduced to one quarter.
- Taxon
- sugar-beet plantsBeta vulgaris subsp. vulgarise1
- Treatment
- removal of part of the roote0
- Outcome
- shoote0
- Direction
- no effecte0
- Qualifier
- unless it was reduced to one quartere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“removal of part of the root had no effect on the shoot unless it was reduced to one quarter”
e1“sugar-beet plants (Beta vulgaris L.)”
Claim · model-written summary
Changing shoot amount had no significant effect on root growth.
- Taxon
- sugar-beet plantsBeta vulgaris subsp. vulgarise1
- Treatment
- change in the amount of shoote0
- Outcome
- growth of the roote0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The change in the amount of shoot had no significant effect on the growth of the root”
e1“sugar-beet plants (Beta vulgaris L.)”
Claim · model-written summary
Removing more than half the root did not induce compensatory growth of remaining root.
- Taxon
- sugar-beet plantsBeta vulgaris subsp. vulgarise1
- Treatment
- more than one half of it had been removede0
- Outcome
- growth of the remaining roote0
- Direction
- nor was there a compensating effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nor was there a compensating effect on the growth of the remaining root after more than one half of it had been removed”
e1“sugar-beet plants (Beta vulgaris L.)”
Claim · model-written summary
Removing more than one third of the root decreased net assimilation rate.
- Taxon
- sugar-beet plantsBeta vulgaris subsp. vulgarise1
- Treatment
- Removal of more than one third of the roote0
- Outcome
- net assimilation ratee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Removal of more than one third of the root resulted in an appreciable decrease in the net assimilation rate”
e1“sugar-beet plants (Beta vulgaris L.)”
Claim · model-written summary
Partial shoot removal increased net assimilation rate in plants with the same root sink strength.
- Taxon
- sugar-beet plantsBeta vulgaris subsp. vulgarise1
- Treatment
- removal of part of the shoote0
- Outcome
- net assimilation ratee0
- Direction
- increasede0
- Qualifier
- same root ‘sink strength’e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“removal of part of the shoot of plants with the same root ‘sink strength’ led to an increased net assimilation rate”
e1“sugar-beet plants (Beta vulgaris L.)”
The same questions in other papers
pruning · growth · Beta vulgaris (beet)Positive and negative results
5 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
4 papers more in this group
See all 8 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.