Abstract
Leaf and whole-canopy gas exchange of Beurré Hardy and Beurré Bosc trees, either selfrooted or grafted on clonal quince rootstocks (BA29 and MC), and a common seedling were measured to study the effect of varying degrees of graft incompatibility on tree gas exchange. Whole-canopy gas exchange was expressed in terms of the energy absorbed by the canopy, which was measured at hour intervals using a custom-built sensor. Leaf transpiration, stomatal conductance and net photosynthesis were not affected by cultivar, but they were reduced by the dwarfing quince rootstock, MC. Similar results were obtained for daily patterns of whole-canopy photosynthesis, measured in early July and August. The ratio of leaf net photosynthesis to light intercepted per tree followed the same pattern as whole-canopy photosynthesis.
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Claims 4
Claim · model-written summary
Leaf transpiration, stomatal conductance and net photosynthesis did not differ by cultivar.
- Taxon
- PEAR
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communist0 - Treatment
- cultivare0
- Outcome
- Leaf transpiration, stomatal conductance and net photosynthesise0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“Leaf transpiration, stomatal conductance and net photosynthesis were not affected by cultivar”
t0“PEAR”
Claim · model-written summary
Dwarfing quince rootstock MC reduced leaf transpiration, stomatal conductance and net photosynthesis.
- Taxon
- PEARPyrus communist0
- Treatment
- dwarfing quince rootstock, MCe0
- Outcome
- Leaf transpiration, stomatal conductance and net photosynthesise0
- Direction
- reducede0
- Comparator
- selfrootede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf transpiration, stomatal conductance and net photosynthesis were not affected by cultivar, but they were reduced by the dwarfing quince rootstock, MC”
e1“either selfrooted or grafted on clonal quince rootstocks (BA29 and MC), and a common seedling”
t0“PEAR”
Claim · model-written summary
Dwarfing quince rootstock MC similarly reduced daily whole canopy photosynthesis in early July and August.
- Taxon
- PEARPyrus communist0
- Treatment
- dwarfing quince rootstock, MCe1
- Outcome
- whole-canopy photosynthesise0
- Direction
- reducede1
- Qualifier
- early July and Auguste0
- Comparator
- selfrootede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similar results were obtained for daily patterns of whole-canopy photosynthesis, measured in early July and August”
e1“they were reduced by the dwarfing quince rootstock, MC”
e2“either selfrooted or grafted on clonal quince rootstocks (BA29 and MC), and a common seedling”
t0“PEAR”
Claim · model-written summary
The ratio of leaf net photosynthesis to intercepted light followed the pattern of whole canopy photosynthesis.
- Taxon
- PEARPyrus communist0
- Outcome
- ratio of leaf net photosynthesis to light intercepted per treee0
- Direction
- same patterne0
- Comparator
- whole-canopy photosynthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ratio of leaf net photosynthesis to light intercepted per tree followed the same pattern as whole-canopy photosynthesis”
t0“PEAR”
The same questions in other papers
grafting · physiology: photosynthesis · Pyrus communis (pear)Positive and negative results
2 in the opposite direction
- positive
- positive
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.