Abstract
To investigate the responses of castor bean to repeated drying–wetting cycles (RDWC), morpho-physiological parameters of two cultivars (Jiaxiang 2 and Hangbi 8) were determined by a pot experiment under well-watered control and RDWC. RDWC inhibited plant growth and leaf development, decreased water loss rate (WLR), and enhanced leaf mass per area (LMA) and chlorophyll content as indicated by spectral reflectance indices for both cultivars. Photosynthesis was inhibited by progressive drought stress but quickly recovered after rewatering for each cycle. Both cultivars exhibit a similar pattern of acclimation to RDWC: (1) higher LMA and lower WLR, (2) increased photosynthetic capacity under drought stress with increasing cycle numbers, (3) quick recovery and over-compensation for photosynthesis after rewatering, and (4) increased chlorophyll content. Jiaxiang 2 shows a high capacity for water preservation under drought stress and an over-compensation for photosynthesis after rewatering compared with Hangbi 8.
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Claims 9
Claim · model-written summary
Repeated drying and wetting inhibited growth and leaf development in both cultivars.
- Taxon
- castor bean
Ricinus communist0 - Treatment
- RDWCe0
- Outcome
- plant growth and leaf developmente0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RDWC inhibited plant growth and leaf development”
t0“castor bean”
Claim · model-written summary
Repeated drying and wetting decreased water loss rate.
- Taxon
- castor beanRicinus communist0
- Treatment
- RDWCe0
- Outcome
- water loss rate (WLR)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RDWC inhibited plant growth and leaf development, decreased water loss rate (WLR)”
t0“castor bean”
Claim · model-written summary
Repeated drying and wetting enhanced leaf mass per area and chlorophyll content.
- Taxon
- castor beanRicinus communist0
- Outcome
- leaf mass per area (LMA) and chlorophyll contente0
- Direction
- enhancede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhanced leaf mass per area (LMA) and chlorophyll content as indicated by spectral reflectance indices for both cultivars”
t0“castor bean”
Claim · model-written summary
Progressive drought inhibited photosynthesis.
- Taxon
- castor beanRicinus communist0
- Treatment
- progressive drought stresse0
- Outcome
- Photosynthesise0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photosynthesis was inhibited by progressive drought stress”
t0“castor bean”
Claim · model-written summary
Photosynthesis rapidly recovered after rewatering in each cycle.
- Taxon
- castor beanRicinus communist0
- Treatment
- rewateringe0
- Outcome
- quickly recoverede0
- Direction
- recoverede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“quickly recovered after rewatering for each cycle”
t0“castor bean”
Claim · model-written summary
Photosynthetic capacity during drought increased with cycle number.
- Taxon
- castor beanRicinus communist0
- Treatment
- drought stresse0
- Outcome
- photosynthetic capacitye0
- Direction
- increasede0
- Qualifier
- increasing cycle numberse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased photosynthetic capacity under drought stress with increasing cycle numbers”
t0“castor bean”
Claim · model-written summary
Photosynthesis overcompensated after rewatering.
- Taxon
- castor beanRicinus communist0
- Treatment
- rewateringe0
- Outcome
- over-compensation for photosynthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“(3) quick recovery and over-compensation for photosynthesis after rewatering”
t0“castor bean”
Claim · model-written summary
Jiaxiang 2 had greater water preservation during drought than Hangbi 8.
- Taxon
- castor beanRicinus communist0
- Material
- Jiaxiang 2e0
- Outcome
- capacity for water preservatione0
- Direction
- highe0
- Comparator
- Hangbi 8e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Jiaxiang 2 shows a high capacity for water preservation under drought stress and an over-compensation for photosynthesis after rewatering compared with Hangbi 8”
t0“castor bean”
Claim · model-written summary
Jiaxiang 2 showed more photosynthetic overcompensation after rewatering than Hangbi 8.
- Taxon
- castor beanRicinus communist0
- Material
- Jiaxiang 2e0
- Outcome
- over-compensation for photosynthesise0
- Comparator
- Hangbi 8e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Jiaxiang 2 shows a high capacity for water preservation under drought stress and an over-compensation for photosynthesis after rewatering compared with Hangbi 8”
t0“castor bean”
The same questions in other papers
processing · growth · Ricinus communis (castor bean)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →drought · physiology: photosynthesis · Ricinus communis (castor bean)Results agree
3 papers in the same direction as this paper
- negative
- 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.