Paper · 1979 · Journal of the American Society for Horticultural Science

Rootstock Does Not Affect Net Photosynthesis, Dark Respiration, Specific Leaf Weight, and Transpiration of Apple Leaves1

John A. Barden; David C. Ferree

4
claims
9
verbatim quotes
31
citations
2
research areas
✓
Open access · cc-by-nc-nd

Abstract

Abstract There was no effect of rootstock on the net photosynthesis (Pn) of 1-year-old vegetative, containergrown ‘Delicious’ trees in 2 experiments. Rootstock effects on specific leaf weight (SLW) were slight in one experiment, and absent in another. There was no influence of rootstock on shoot growth, leaf number, transpiration rate (Tr) or dark respiration (Rd), each of which was determined in one experiment. These data fail to support reports of differences in Pn within a given cultivar on various rootstocks.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. Read at the source ↗

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 4

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Rootstock did not affect net photosynthesis in two experiments.

Material
‘Delicious’e0
Treatment
rootstocke0
Outcome
net photosynthesise0
Direction
no effecte0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“no effect of rootstock on the net photosynthesis (Pn) of 1-year-old vegetative, containergrown ‘Delicious’ trees in 2 experiments”

✓ located verbatim in the source · abstract, characters 19–148 · show in text ↑
t0

“Apple Leaves”

✓ located verbatim in the source · title, characters 107–119 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Rootstock had slight effects on specific leaf weight in one experiment.

Treatment
Rootstocke0
Outcome
specific leaf weighte0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Rootstock effects on specific leaf weight (SLW) were slight in one experiment”

✓ located verbatim in the source · abstract, characters 150–227 · show in text ↑
t0

“Apple Leaves”

✓ located verbatim in the source · title, characters 107–119 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Rootstock had no effect on specific leaf weight in another experiment.

Treatment
Rootstocke1
Outcome
specific leaf weighte1
Direction
absente0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“absent in another”

✓ located verbatim in the source · abstract, characters 233–250 · show in text ↑
e1

“Rootstock effects on specific leaf weight (SLW)”

✓ located verbatim in the source · abstract, characters 150–197 · show in text ↑
t0

“Apple Leaves”

✓ located verbatim in the source · title, characters 107–119 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Rootstock did not influence shoot growth, leaf number, transpiration rate or dark respiration.

Treatment
rootstocke0
Outcome
shoot growth, leaf number, transpiration rate (Tr) or dark respiration (Rd)e0
Direction
no influencee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“no influence of rootstock on shoot growth, leaf number, transpiration rate (Tr) or dark respiration (Rd)”

✓ located verbatim in the source · abstract, characters 262–366 · show in text ↑
t0

“Apple Leaves”

✓ located verbatim in the source · title, characters 107–119 · show in text ↑

grafting · physiology: gas exchange · Malus domestica (apple)Positive and negative results

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grafting · physiology: photosynthesis · Malus domestica (apple)Positive and negative results

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grafting · growth · Malus domestica (apple)Positive and negative results

41 papers: 24 positive, 17 negative or no effect

16 papers in the same direction as this paper · 24 in the opposite direction

  1. positive
  2. no effect
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37 papers more in this group

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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.