Abstract
The effects of short durations of waterlogging was investigated in three cultivars of pigeonpea ( Cajanus cajan (L.) Millps); Tobago pea, Chag pearl and ICPL-19 grown in pots under greenhouse conditions at four waterlogging treatments (Control, WL1, WL2, WL3, and WL4). Waterlogging treatments resulted in an increase in stomatal resistance, and reduced rates of transpiration and net photosynthesis in all the cultivars, but cultivar differences were not evident. With increasing number of cycles of waterlogging, there were increases in the stomatal resistance and reduction in rates of transpiration and net photosynthesis. Waterlogging also resulted in wilting, chlorosis, senescence and abscission of lower leaves after as little as two days of waterlogging. Leaf area development, dry weight accumulation per plant and partitioning were substantially reduced by waterlogging treatments, but the reduction in leaf area and dry weights were consistently greatest in ICPL-19 than Tobago pea and Chag pearl. The adverse effect of waterlogging observed in this study was associated to the greater degree of root damage in all cultivars which in turn resulted in an increase in the resistance to water flow.
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Claims 9
Claim · model-written summary
Waterlogging increased stomatal resistance in all cultivars.
- Taxon
- pigeonpea
Cajanus cajant0 - Treatment
- Waterlogging treatmentse0
- Outcome
- stomatal resistancee0
- Direction
- increasee0
- Comparator
- Controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Waterlogging treatments resulted in an increase in stomatal resistance”
e1“at four waterlogging treatments (Control, WL1, WL2, WL3, and WL4)”
t0“pigeonpea”
Claim · model-written summary
Waterlogging reduced transpiration and net photosynthesis in all cultivars.
- Taxon
- pigeonpeaCajanus cajant0
- Treatment
- Waterlogginge1
- Outcome
- rates of transpiration and net photosynthesise0
- Direction
- reducede0
- Comparator
- Controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced rates of transpiration and net photosynthesis in all the cultivars”
e1“at four waterlogging treatments (Control, WL1, WL2, WL3, and WL4)”
t0“pigeonpea”
Claim · model-written summary
The physiological responses did not show evident cultivar differences.
- Taxon
- pigeonpeaCajanus cajant0
- Outcome
- cultivar differencese0
- Direction
- not evidente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but cultivar differences were not evident”
t0“pigeonpea”
Claim · model-written summary
More waterlogging cycles increased stomatal resistance.
- Taxon
- pigeonpeaCajanus cajant0
- Treatment
- waterlogginge0
- Outcome
- stomatal resistancee0
- Direction
- increasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increasing number of cycles of waterlogging, there were increases in the stomatal resistance”
t0“pigeonpea”
Claim · model-written summary
More waterlogging cycles reduced transpiration and net photosynthesis.
- Taxon
- pigeonpeaCajanus cajant0
- Treatment
- waterlogginge0
- Outcome
- rates of transpiration and net photosynthesise0
- Direction
- reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increasing number of cycles of waterlogging, there were increases in the stomatal resistance and reduction in rates of transpiration and net photosynthesis”
t0“pigeonpea”
Claim · model-written summary
Waterlogging caused wilting, chlorosis, senescence and lower-leaf abscission after as little as two days.
- Taxon
- pigeonpeaCajanus cajant0
- Treatment
- Waterlogginge0
- Outcome
- wilting, chlorosis, senescence and abscission of lower leavese0
- Qualifier
- after as little as two days of waterlogginge0
- Comparator
- Controle1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Waterlogging also resulted in wilting, chlorosis, senescence and abscission of lower leaves after as little as two days of waterlogging”
e1“at four waterlogging treatments (Control, WL1, WL2, WL3, and WL4)”
t0“pigeonpea”
Claim · model-written summary
Waterlogging reduced leaf area development, dry weight accumulation and partitioning.
- Taxon
- pigeonpeaCajanus cajant0
- Treatment
- waterlogging treatmentse0
- Outcome
- Leaf area development, dry weight accumulation per plant and partitioninge0
- Direction
- reducede0
- Comparator
- Controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf area development, dry weight accumulation per plant and partitioning were substantially reduced by waterlogging treatments”
e1“at four waterlogging treatments (Control, WL1, WL2, WL3, and WL4)”
t0“pigeonpea”
Claim · model-written summary
ICPL-19 had greater reductions in leaf area and dry weight than Tobago pea and Chag pearl.
- Taxon
- pigeonpeaCajanus cajant0
- Material
- ICPL-19e0
- Outcome
- reduction in leaf area and dry weightse0
- Direction
- greateste0
- Comparator
- Tobago pea and Chag pearle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduction in leaf area and dry weights were consistently greatest in ICPL-19 than Tobago pea and Chag pearl”
t0“pigeonpea”
Claim · model-written summary
Waterlogging damage was associated with root damage and increased resistance to water flow.
- Taxon
- pigeonpeaCajanus cajant0
- Organ / stage
- roote0
- Outcome
- resistance to water flowe0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“greater degree of root damage in all cultivars which in turn resulted in an increase in the resistance to water flow”
t0“pigeonpea”
The same questions in other papers
flooding · growth · Cajanus cajan (pigeon pea)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
1 paper more in this group
See all 5 papers →flooding · physiology: pigments · Cajanus cajan (pigeon pea)Results agree
1 paper in the same direction as this paper
- negative
flooding · disease · Cajanus cajan (pigeon pea)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.