Abstract
Drought stress caused the decrease of pigment contents - chlorophyll a, chlorophyll b, chlorophyll a/b ratio, total chlorophyll content and carotenoids content of leaves of five rice varieties (var. BRRI Dhan-30, BRRI Dhan-32, BRRI Dhan-34, BRRI Dhan-38 and BRRI Dhan-56). Among five rice varieties, BRRI Dhan- 56 showed the least decrease of pigment content under stress. It caused the decrease of protein content of leaves of five rice varieties whereas BRRI Dhan-56 showed the least decrease (3.64%) of protein content under stress. On the other hand, drought stress increased CAT and SOD activities in the leaf of five varieties of rice and BRRI Dhan-56 showed the highest increase of CAT (37.67%) and SOD (94.17%) activity under stress. It may be assumed that higher antioxidant enzymes activities (CAT and SOD) and less reduction of protein content were related to the mechanisms of drought tolerance in rice. It is indicated that BRRI Dhan- 56 may be drought tolerant while BRRI Dhan-30, BRRI Dhan-32, BRRI Dhan-34 and BRRI Dhan-38 were drought sensitive rice varieties. Drought tolerant rice variety is selected based on pigment content, protein content and antioxidant enzymes activities (CAT and SOD).
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Claims 12
Claim · model-written summary
Drought stress decreased chlorophyll a, chlorophyll b and the chlorophyll a/b ratio in rice leaves.
- Taxon
- rice
Oryza sativae0 - Treatment
- Drought stresse0
- Outcome
- chlorophyll a, chlorophyll b, chlorophyll a/b ratioe0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress caused the decrease of pigment contents - chlorophyll a, chlorophyll b, chlorophyll a/b ratio, total chlorophyll content and carotenoids content of leaves of five rice varieties”
Claim · model-written summary
Drought stress decreased total chlorophyll and carotenoid contents in rice leaves.
- Taxon
- riceOryza sativae0
- Treatment
- Drought stresse0
- Outcome
- total chlorophyll content and carotenoids contente0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress caused the decrease of pigment contents - chlorophyll a, chlorophyll b, chlorophyll a/b ratio, total chlorophyll content and carotenoids content of leaves of five rice varieties”
Claim · model-written summary
BRRI Dhan-56 showed the least decrease of pigment content among rice varieties under drought stress.
- Taxon
- riceOryza sativae1
- Material
- BRRI Dhan- 56e1
- Treatment
- under stresse1
- Outcome
- pigment contente1
- Direction
- least decreasee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Among five rice varieties, BRRI Dhan- 56 showed the least decrease of pigment content under stress”
Claim · model-written summary
Drought stress decreased protein content in rice leaves.
- Taxon
- riceOryza sativae2
- Treatment
- Drought stresse0
- Outcome
- protein contente2
- Direction
- decreasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“It caused the decrease of protein content of leaves of five rice varieties whereas BRRI Dhan-56 showed the least decrease (3.64%) of protein content under stress”
e0“Drought stress caused the decrease of pigment contents - chlorophyll a, chlorophyll b, chlorophyll a/b ratio, total chlorophyll content and carotenoids content of leaves of five rice varieties”
Claim · model-written summary
BRRI Dhan-56 showed the least decrease (3.64%) of protein content under drought stress.
- Taxon
- riceOryza sativae2
- Material
- BRRI Dhan-56e2
- Treatment
- under stresse2
- Outcome
- protein contente2
- Direction
- least decreasee2
- Value
- 3.64%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“It caused the decrease of protein content of leaves of five rice varieties whereas BRRI Dhan-56 showed the least decrease (3.64%) of protein content under stress”
Claim · model-written summary
Drought stress increased CAT and SOD activities in rice leaves.
- Taxon
- riceOryza sativae3
- Treatment
- drought stresse3
- Outcome
- CAT and SOD activitiese3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“drought stress increased CAT and SOD activities in the leaf of five varieties of rice and BRRI Dhan-56 showed the highest increase of CAT (37.67%) and SOD (94.17%) activity under stress”
Claim · model-written summary
BRRI Dhan-56 showed the highest CAT increase (37.67%) under stress.
- Taxon
- riceOryza sativae3
- Material
- BRRI Dhan-56e3
- Treatment
- under stresse3
- Outcome
- CATe3
- Direction
- highest increasee3
- Value
- 37.67%e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“drought stress increased CAT and SOD activities in the leaf of five varieties of rice and BRRI Dhan-56 showed the highest increase of CAT (37.67%) and SOD (94.17%) activity under stress”
Claim · model-written summary
BRRI Dhan-56 showed the highest SOD increase (94.17%) under stress.
- Taxon
- riceOryza sativae3
- Material
- BRRI Dhan-56e3
- Treatment
- under stresse3
- Outcome
- SODe3
- Direction
- highest increasee3
- Value
- 94.17%e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“drought stress increased CAT and SOD activities in the leaf of five varieties of rice and BRRI Dhan-56 showed the highest increase of CAT (37.67%) and SOD (94.17%) activity under stress”
Claim · model-written summary
Higher antioxidant enzyme activities and less protein reduction may explain drought tolerance in rice.
- Taxon
- riceOryza sativae4
- Gene
- CAT and SODe4
- Outcome
- mechanisms of drought tolerancee4
- Qualifier
- less reduction of protein contente4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“higher antioxidant enzymes activities (CAT and SOD) and less reduction of protein content were related to the mechanisms of drought tolerance in rice”
Claim · model-written summary
BRRI Dhan-56 may be drought tolerant.
- Taxon
- rice varietiesOryza sativae5
- Material
- BRRI Dhan- 56e5
- Outcome
- drought tolerante5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“It is indicated that BRRI Dhan- 56 may be drought tolerant while BRRI Dhan-30, BRRI Dhan-32, BRRI Dhan-34 and BRRI Dhan-38 were drought sensitive rice varieties”
Claim · model-written summary
BRRI Dhan-30, BRRI Dhan-32, BRRI Dhan-34 and BRRI Dhan-38 were drought sensitive.
- Taxon
- rice varietiesOryza sativae5
- Material
- BRRI Dhan-30, BRRI Dhan-32, BRRI Dhan-34 and BRRI Dhan-38e5
- Outcome
- drought sensitivee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“It is indicated that BRRI Dhan- 56 may be drought tolerant while BRRI Dhan-30, BRRI Dhan-32, BRRI Dhan-34 and BRRI Dhan-38 were drought sensitive rice varieties”
Claim · model-written summary
Drought-tolerant rice varieties should be selected on pigment content, protein content and CAT and SOD activities.
- Taxon
- rice varietyOryza sativae6
- Outcome
- Drought tolerant rice variety is selectede6
- Qualifier
- based on pigment content, protein content and antioxidant enzymes activities (CAT and SOD)e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Drought tolerant rice variety is selected based on pigment content, protein content and antioxidant enzymes activities (CAT and SOD)”
The same questions in other papers
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See all 42 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.