Abstract
Drought is one of the major stress factors affecting the growth and development of plants, and is responsible for considerable crop yield losses worldwide. An experiment was conducted to compare three rice (Oryza sativa L.) varieties (BRRI dhan49, BRRI dhan71 and BRRI dhan75) for drought tolerance based on some growth parameters and physiological status in germination stage. Drought stress was imposed by five levels of polyethylene glycol (PEG) (0%, 10%, 15%, 20% and 25%). Rice varieties showed good germination with PEG concentration up to 15%. At 20% PEG concentration, a sharp reduction in germination percentage was observed and the highest germination percentage (55.53%) was found in the variety BRRI dhan71. Seeds of all the varieties treated with 25% PEG did not germinate. Seedling growth in terms of plumule and radicle length, fresh weight and dry weight decreased with increasing drought stress in all the varieties. Among the varieties, BRRI dhan71 was found to be the best at 20% PEG for seedling growth. Drought stress treatments decreased seedling length and weight vigor index in rice, whereas the highest seedling length and weight vigor index were obtained from BRRI dhan71. Accumulation of proline increased along with the increase of PEG concentration. The highest proline accumulation (3.08 mmol g-1 leaf) was obtained from the BRRI dhan71 at the higher treatment (20% PEG). This result suggests that BRRI dhan71 showed best performance under drought stress because of its own nature of tolerance. SAARC J. Agric., 20(1): 107-119 (2022)
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Rice varieties showed good germination with PEG concentration up to 15%.
- Taxon
- rice
Oryza sativat0 - Treatment
- PEG concentration up to 15%e0
- Outcome
- germinatione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e0“Rice varieties showed good germination with PEG concentration up to 15%”
Claim · model-written summary
At 20% PEG, germination percentage showed a sharp reduction in rice.
- Taxon
- riceOryza sativat0
- Treatment
- 20% PEG concentratione1
- Outcome
- germination percentagee1
- Direction
- reductione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e1“At 20% PEG concentration, a sharp reduction in germination percentage was observed”
Claim · model-written summary
At 20% PEG, BRRI dhan71 had the highest germination percentage (55.53%).
- Taxon
- riceOryza sativat0
- Material
- BRRI dhan71e2
- Treatment
- 20% PEGe1
- Outcome
- germination percentagee2
- Direction
- higheste2
- Value
- 55.53%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e1“At 20% PEG concentration, a sharp reduction in germination percentage was observed”
e2“the highest germination percentage (55.53%) was found in the variety BRRI dhan71”
Claim · model-written summary
Seeds of all rice varieties treated with 25% PEG did not germinate.
- Taxon
- riceOryza sativat0
- Material
- all the varietiese3
- Treatment
- 25% PEGe3
- Outcome
- germinatee3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e3“Seeds of all the varieties treated with 25% PEG did not germinate”
Claim · model-written summary
Drought stress decreased plumule and radicle length of rice seedlings in all varieties.
- Taxon
- riceOryza sativat0
- Material
- all the varietiese4
- Treatment
- increasing drought stresse4
- Outcome
- plumule and radicle lengthe4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e4“Seedling growth in terms of plumule and radicle length, fresh weight and dry weight decreased with increasing drought stress in all the varieties”
Claim · model-written summary
Drought stress decreased fresh weight and dry weight of rice seedlings in all varieties.
- Taxon
- riceOryza sativat0
- Material
- all the varietiese4
- Treatment
- increasing drought stresse4
- Outcome
- fresh weight and dry weighte4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e4“Seedling growth in terms of plumule and radicle length, fresh weight and dry weight decreased with increasing drought stress in all the varieties”
Claim · model-written summary
BRRI dhan71 was the best variety for seedling growth at 20% PEG.
- Taxon
- riceOryza sativat0
- Material
- BRRI dhan71e5
- Treatment
- 20% PEGe5
- Outcome
- seedling growthe5
- Direction
- beste5
- Comparator
- Among the varietiese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e5“Among the varieties, BRRI dhan71 was found to be the best at 20% PEG for seedling growth”
Claim · model-written summary
Drought stress decreased seedling length and weight vigor index in rice.
- Taxon
- riceOryza sativat0
- Treatment
- Drought stress treatmentse6
- Outcome
- seedling length and weight vigor indexe6
- Direction
- decreasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e6“Drought stress treatments decreased seedling length and weight vigor index in rice”
Claim · model-written summary
BRRI dhan71 had the highest seedling length and weight vigor index.
- Taxon
- riceOryza sativat0
- Material
- BRRI dhan71e7
- Outcome
- seedling length and weight vigor indexe7
- Direction
- higheste7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e7“the highest seedling length and weight vigor index were obtained from BRRI dhan71”
Claim · model-written summary
Proline accumulation increased along with PEG concentration in rice.
- Taxon
- riceOryza sativat0
- Treatment
- PEG concentratione1
- Outcome
- Accumulation of prolinee1
- Direction
- increasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e1“Accumulation of proline increased along with the increase of PEG concentration”
Claim · model-written summary
BRRI dhan71 had the highest proline accumulation (3.08 mmol g-1 leaf) at 20% PEG.
- Taxon
- riceOryza sativat0
- Material
- BRRI dhan71e1
- Treatment
- 20% PEGe1
- Outcome
- proline accumulatione1
- Direction
- higheste1
- Value
- 3.08 mmol g-1 leafe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice (Oryza sativa L.)”
e1“The highest proline accumulation (3.08 mmol g-1 leaf) was obtained from the BRRI dhan71 at the higher treatment (20% PEG)”
The same questions in other papers
poly(ethylene glycol) · growth · Oryza sativa (rice)Positive and negative results
8 papers in the same direction as this paper · 19 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
25 papers more in this group
See all 29 papers →drought · growth · Oryza sativa (rice)Positive and negative results
183 papers in the same direction as this paper · 98 in the opposite direction
- no effect
- positive
- positive
278 papers more in this group
See all 282 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.