Abstract
Field trial was conducted to study the effects of quality of planting material and prolonged water stress on leaf gas exchange of the cassava (Manihot esculenta Crantz) cultivar M Col 1684. Nutrient contents of planting material affected rootlet formation, but not leaf gas exchange. Net photosynthetic rate (PN), stomatal conductance (gs), and intercellular CO2 concentration (Ci) were significantly reduced by prolonged water stress. New leaves developed after recovery from water stress showed higher PN and gs, as compared to leaves of similar ages of unstressed plants. The higher PN was associated with higher leaf nutrient contents, indicating that photosynthetic capacity was enhanced in these leaves. These compensating characteristics may partly explain the small yield reduction often observed in stressed cassava.
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Claims 7
Claim · model-written summary
Nutrient contents of cassava planting material affected rootlet formation.
- Taxon
- cassava
Manihot esculentae1 - Material
- M Col 1684e1
- Treatment
- Nutrient contents of planting materiale6
- Outcome
- rootlet formatione6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Nutrient contents of planting material affected rootlet formation, but not leaf gas exchange”
e1“Field trial was conducted to study the effects of quality of planting material and prolonged water stress on leaf gas exchange of the cassava (Manihot esculenta Crantz) cultivar M Col 1684”
Claim · model-written summary
Nutrient contents of cassava planting material did not affect leaf gas exchange.
- Taxon
- cassavaManihot esculentae1
- Material
- M Col 1684e1
- Treatment
- Nutrient contents of planting materiale6
- Outcome
- leaf gas exchangee6
- Direction
- no_changeinferrede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Nutrient contents of planting material affected rootlet formation, but not leaf gas exchange”
e1“Field trial was conducted to study the effects of quality of planting material and prolonged water stress on leaf gas exchange of the cassava (Manihot esculenta Crantz) cultivar M Col 1684”
Claim · model-written summary
Prolonged water stress significantly reduced net photosynthetic rate, stomatal conductance and intercellular CO2 concentration of cassava.
- Taxon
- cassavaManihot esculentae1
- Material
- M Col 1684e1
- Treatment
- prolonged water stresse2
- Outcome
- Net photosynthetic rate (PN), stomatal conductance (gs), and intercellular CO2 concentration (Ci)e2
- Direction
- reducede2
- Comparator
- unstressed plantse3
- Setting
- Field triale1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Net photosynthetic rate (PN), stomatal conductance (gs), and intercellular CO2 concentration (Ci) were significantly reduced by prolonged water stress”
e3“New leaves developed after recovery from water stress showed higher PN and gs, as compared to leaves of similar ages of unstressed plants”
e1“Field trial was conducted to study the effects of quality of planting material and prolonged water stress on leaf gas exchange of the cassava (Manihot esculenta Crantz) cultivar M Col 1684”
Claim · model-written summary
New cassava leaves developed after recovery from water stress had higher PN and gs than leaves of similar age on unstressed plants.
- Taxon
- cassavaManihot esculentae1
- Material
- M Col 1684e1
- Organ / stage
- New leavese3
- Treatment
- recovery from water stresse3
- Outcome
- PN and gse3
- Direction
- highere3
- Comparator
- leaves of similar ages of unstressed plantse3
- Setting
- Field triale1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“New leaves developed after recovery from water stress showed higher PN and gs, as compared to leaves of similar ages of unstressed plants”
e1“Field trial was conducted to study the effects of quality of planting material and prolonged water stress on leaf gas exchange of the cassava (Manihot esculenta Crantz) cultivar M Col 1684”
Claim · model-written summary
Higher PN was associated with higher leaf nutrient contents in cassava.
- Taxon
- cassavaManihot esculentae1
- Organ / stage
- leavese4
- Outcome
- PNe4
- Direction
- highere4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The higher PN was associated with higher leaf nutrient contents, indicating that photosynthetic capacity was enhanced in these leaves”
e1“Field trial was conducted to study the effects of quality of planting material and prolonged water stress on leaf gas exchange of the cassava (Manihot esculenta Crantz) cultivar M Col 1684”
Claim · model-written summary
Higher leaf nutrient contents are interpreted to indicate enhanced photosynthetic capacity in the recovery leaves of cassava.
- Taxon
- cassavaManihot esculentae1
- Outcome
- photosynthetic capacitye4
- Qualifier
- higher leaf nutrient contentse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The higher PN was associated with higher leaf nutrient contents, indicating that photosynthetic capacity was enhanced in these leaves”
e1“Field trial was conducted to study the effects of quality of planting material and prolonged water stress on leaf gas exchange of the cassava (Manihot esculenta Crantz) cultivar M Col 1684”
Claim · model-written summary
Compensating leaf characteristics may partly explain the small yield reduction often observed in stressed cassava.
- Taxon
- cassavaManihot esculentae5
- Outcome
- small yield reductione5
- Qualifier
- These compensating characteristicse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“These compensating characteristics may partly explain the small yield reduction often observed in stressed cassava”
The same questions in other papers
drought · physiology: photosynthesis · Manihot esculenta (cassava)Positive and negative results
3 papers in the same direction as this paper · 7 in the opposite direction
- negative
- negative
- negative
7 papers more in this group
See all 11 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.