Abstract
Abiotic stress tolerant germplasms of field crops are useful for cultivation under growth limiting conditions. In the present study 18 different rice germplasms for their cell membrane injury (CMI), cell membrane stability (CMS), ATPase activity and their relevance to seed germination and seedling growth tolerance index (TI) under abiotic stresses like salinity and low Ψw were investigated. At least 12 germplasms had relatively low membrane injury (< 10%) and consequently high membrane stability (> 90) including TM-1-5, Sadachikon, SR x P 5222, BR 23, Pokkali, Nonabokra, etc. indicating a relationship between stress tolerance and CMS. ATPase activities in some of these rice germplasms were high along with CMS related to stress tolerance. The TI of seed germinations and seedling growth of different germplasms under salinity stress were affected in different degrees and decreased more under high intensities. At 0.l Molal NaCl all germplasms had ≤ 80% TI of seed germination, at 0.2 Molal NaCl only three had ≥ 80% TI and ten had ≥ 50% TI and at 0.3 Molal NaC1, only nine had ~10-32% TI and the rest nine did not germinate. Osmoticum PEG-6000 at -5.5 bar Ψw had limited inhibitory effect on seed germination TI. NaCl as well as PEG-6000 degraded both the root and shoot growth TI of the seedlings. Bangladesh J. Bot. 52(3): 889-896, 2023 (September)
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Claims 13
Claim · model-written summary
At least 12 rice germplasms had membrane injury below 10%.
- Taxon
- rice
Oryza sativat0 - Outcome
- membrane injurye0
- Value
- < 10%e0
- Qualifier
- At least 12 germplasmse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At least 12 germplasms had relatively low membrane injury (< 10%) and consequently high membrane stability (> 90)”
t0“tolerance indices of rice under abiotic stresses”
Claim · model-written summary
At least 12 rice germplasms had membrane stability above 90.
- Taxon
- riceOryza sativat0
- Outcome
- membrane stabilitye0
- Value
- > 90e0
- Qualifier
- At least 12 germplasmse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At least 12 germplasms had relatively low membrane injury (< 10%) and consequently high membrane stability (> 90)”
t0“tolerance indices of rice under abiotic stresses”
Claim · model-written summary
Stress tolerance and membrane stability in rice appear to be related.
- Taxon
- riceOryza sativat0
- Treatment
- abiotic stressest0
- Outcome
- stress tolerance and CMSe1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“indicating a relationship between stress tolerance and CMS”
t0“tolerance indices of rice under abiotic stresses”
Claim · model-written summary
ATPase activities were high in some rice germplasms that also had high membrane stability.
- Taxon
- riceOryza sativae2
- Outcome
- ATPase activitiese2
- Qualifier
- high along with CMS related to stress tolerancee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“ATPase activities in some of these rice germplasms were high along with CMS related to stress tolerance”
t0“tolerance indices of rice under abiotic stresses”
Claim · model-written summary
Salinity stress decreased seed germination and seedling growth tolerance index in rice, more so at high intensities.
- Taxon
- riceOryza sativat0
- Treatment
- salinity stresse3
- Outcome
- TI of seed germinations and seedling growthe3
- Direction
- decreasede3
- Qualifier
- more under high intensitiese3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The TI of seed germinations and seedling growth of different germplasms under salinity stress were affected in different degrees and decreased more under high intensities”
t0“tolerance indices of rice under abiotic stresses”
Claim · model-written summary
At 0.1 M NaCl all rice germplasms had seed germination tolerance index of 80% or less.
- Taxon
- riceOryza sativat0
- Treatment
- 0.l Molal NaCle4
- Outcome
- TI of seed germinatione4
- Value
- ≤ 80%e4
- Qualifier
- all germplasmse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“At 0.l Molal NaCl all germplasms had ≤ 80% TI of seed germination”
t0“tolerance indices of rice under abiotic stresses”
Claim · model-written summary
At 0.2 M NaCl only three rice germplasms had germination tolerance index of 80% or more.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“at 0.2 Molal NaCl only three had ≥ 80% TI and ten had ≥ 50% TI”
t0“tolerance indices of rice under abiotic stresses”
Claim · model-written summary
At 0.2 M NaCl ten rice germplasms had germination tolerance index of 50% or more.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“at 0.2 Molal NaCl only three had ≥ 80% TI and ten had ≥ 50% TI”
t0“tolerance indices of rice under abiotic stresses”
Claim · model-written summary
At 0.3 M NaCl only nine rice germplasms had germination tolerance index of about 10-32%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“at 0.3 Molal NaC1, only nine had ~10-32% TI and the rest nine did not germinate”
t0“tolerance indices of rice under abiotic stresses”
Claim · model-written summary
At 0.3 M NaCl the remaining nine rice germplasms did not germinate.
- Taxon
- riceOryza sativat0
- Treatment
- 0.3 Molal NaC1e6
- Outcome
- did not germinatee6
- Qualifier
- the rest ninee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“at 0.3 Molal NaC1, only nine had ~10-32% TI and the rest nine did not germinate”
t0“tolerance indices of rice under abiotic stresses”
Claim · model-written summary
Osmoticum PEG-6000 at -5.5 bar had limited inhibitory effect on seed germination tolerance index in rice.
- Taxon
- riceOryza sativat0
- Treatment
- PEG-6000e0
- Outcome
- seed germination TIe1
- Direction
- limitede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Osmoticum PEG-6000”
e1“had limited inhibitory effect on seed germination TI”
t0“tolerance indices of rice under abiotic stresses”
Claim · model-written summary
NaCl degraded the root and shoot growth tolerance index of rice seedlings.
- Taxon
- riceOryza sativat0
- Organ / stage
- root and shoote7
- Treatment
- NaCle7
- Outcome
- root and shoot growth TIe7
- Direction
- degradede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“NaCl as well as PEG-6000 degraded both the root and shoot growth TI of the seedlings”
t0“tolerance indices of rice under abiotic stresses”
Claim · model-written summary
PEG-6000 degraded the root and shoot growth tolerance index of rice seedlings.
- Taxon
- riceOryza sativat0
- Organ / stage
- root and shoote7
- Treatment
- PEG-6000e7
- Outcome
- root and shoot growth TIe7
- Direction
- degradede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“NaCl as well as PEG-6000 degraded both the root and shoot growth TI of the seedlings”
t0“tolerance indices of rice under abiotic stresses”
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See all 17 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.