Abstract
Three different treatments by calcium (102M), namely seed treatment, foliar spraying and their combination were applied on field-grown rice (Oryza sativa L. cv. Ratna) under both water stressed and non-stressed conditions in the course of plant development. The relative water content and leaf water potential decreased with increase in age of stressed and non-stressed plants. Pretreatment of seeds with Ca improved the water status of the plants most prominently at the vegetative stage but the effect gradually faded away with plant development. The foliar spraying by Ca was more effective in improving the water status of the plants at the reproductive stage. The combined Ca treatment significantly improved water status of the plants both at the vegetative and reproductive stages. The contents of chlorophyll and protein decreased and the activities of protease and RNase increased in the course of plant development in both non-stressed and even more in stressed plants. Ca treatments of seeds or plants or their combination inhibited the decline in chlorophyll and protein contents and the rising trends of protease and RNase activities, the combined treatment being most effective. During plant development free proline content increased significantly more in water stressed plants. In non-stressed plants there was a marked increase in the free proline content at the mature fruit stage. Ca treatment inhibited the rise of free proline in stressed plants. A significant reduction in yield components and yield of the crop in water stressed plants was increased by Ca treatment.
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Claims 10
Claim · model-written summary
Leaf water status fell with age.
- Taxon
- rice
Oryza sativat0 - Outcome
- relative water content and leaf water potentiale0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relative water content and leaf water potential decreased with increase in age of stressed and non-stressed plants”
t0“rice”
Claim · model-written summary
Seed calcium pretreatment improved water status at the vegetative stage.
- Taxon
- riceOryza sativat0
- Organ / stage
- vegetative stagee0
- Treatment
- Pretreatment of seeds with Cae0
- Outcome
- water statuse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pretreatment of seeds with Ca improved the water status of the plants most prominently at the vegetative stage but the effect gradually faded away with plant development”
t0“rice”
Claim · model-written summary
Foliar calcium improved water status more at the reproductive stage.
- Taxon
- riceOryza sativat0
- Organ / stage
- reproductive stagee0
- Treatment
- foliar spraying by Cae0
- Outcome
- water statuse0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The foliar spraying by Ca was more effective in improving the water status of the plants at the reproductive stage”
t0“rice”
Claim · model-written summary
Combined calcium treatment significantly improved water status at vegetative and reproductive stages.
- Taxon
- riceOryza sativat0
- Treatment
- combined Ca treatmente0
- Outcome
- water statuse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined Ca treatment significantly improved water status of the plants both at the vegetative and reproductive stages”
t0“rice”
Claim · model-written summary
Chlorophyll and protein fell during development, especially with stress.
- Taxon
- riceOryza sativat0
- Outcome
- contents of chlorophyll and proteine0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The contents of chlorophyll and protein decreased and the activities of protease and RNase increased in the course of plant development in both non-stressed and even more in stressed plants”
t0“rice”
Claim · model-written summary
Protease and RNase activity increased during development, especially with stress.
- Taxon
- riceOryza sativat0
- Outcome
- activities of protease and RNasee0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The contents of chlorophyll and protein decreased and the activities of protease and RNase increased in the course of plant development in both non-stressed and even more in stressed plants”
t0“rice”
Claim · model-written summary
Calcium inhibited biochemical deterioration, with combined treatment most effective.
- Taxon
- riceOryza sativat0
- Treatment
- Ca treatments of seeds or plants or their combinatione0
- Outcome
- decline in chlorophyll and protein contentse0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ca treatments of seeds or plants or their combination inhibited the decline in chlorophyll and protein contents and the rising trends of protease and RNase activities, the combined treatment being most effective”
t0“rice”
Claim · model-written summary
Free proline increased more under water stress.
- Taxon
- riceOryza sativat0
- Outcome
- free proline contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During plant development free proline content increased significantly more in water stressed plants”
t0“rice”
Claim · model-written summary
Calcium inhibited free proline rise in stressed plants.
- Taxon
- riceOryza sativat0
- Treatment
- Ca treatmente0
- Outcome
- rise of free prolinee0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ca treatment inhibited the rise of free proline in stressed plants”
t0“rice”
Claim · model-written summary
Calcium improved yield under water stress.
- Taxon
- riceOryza sativat0
- Treatment
- Ca treatmente0
- Outcome
- yield components and yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant reduction in yield components and yield of the crop in water stressed plants was increased by Ca treatment”
t0“rice”
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See all 14 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.