Abstract
Drought is the major environmental stress that limits rice productivity worldwide. In vitro somaclonal variation using different selection agents has been used for crop improvement. Here, rice plants of cv PR113 were selected in vitro on 30, 50 and 70 g L(-1) polyethylene glycol 6,000 (PEG). Callus growth, proliferation, calli volume (first and second culture) and plantlet regeneration (third culture) were found to be decreased upto a certain level to acquire tolerance to PEG-induced drought. From the field data, 30 g L(-1) PEG lines showed higher vegetative growth (plant height, tiller number, leaf number, shoot weight and root growth) as compared with 50 g L(-1) PEG selected somaclone lines under limited irrigation. The yield parameters-panicle length, panicle weight, grains per panicle, 1,000-grain weight, grain yield per plant, harvest index and grain straw ratio were also higher in 30 g L(-1) PEG lines as compared with 50 g L(-1) PEG lines. The results, therefore indicate that 30 g L(-1) PEG selected somaclone lines were more suited than 50 g L(-1) PEG selected somaclone lines under stress as compared with WT. The finding suggests that rice cv PR113 somaclones generated on PEG are found to be drought tolerant under field condition with better yield.
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Claims 9
Claim · model-written summary
PEG selection decreased callus growth, proliferation and calli volume up to a certain level.
- Taxon
- rice
Oryza sativae0 - Material
- cv PR113e0
- Treatment
- polyethylene glycol 6,000 (PEG)e0
- Outcome
- Callus growth, proliferation, calli volumee1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice plants of cv PR113 were selected in vitro on 30, 50 and 70 g L(-1) polyethylene glycol 6,000 (PEG)”
e1“Callus growth, proliferation, calli volume (first and second culture) and plantlet regeneration (third culture) were found to be decreased upto a certain level to acquire tolerance to PEG-induced drought”
Claim · model-written summary
PEG selection decreased plantlet regeneration to a certain level.
- Taxon
- riceOryza sativae0
- Treatment
- polyethylene glycol 6,000 (PEG)e0
- Outcome
- plantlet regeneratione1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice plants of cv PR113 were selected in vitro on 30, 50 and 70 g L(-1) polyethylene glycol 6,000 (PEG)”
e1“plantlet regeneration (third culture) were found to be decreased upto a certain level to acquire tolerance to PEG-induced drought”
Claim · model-written summary
Under limited irrigation, 30 g L(-1) PEG lines had higher plant height, tiller number and leaf number than 50 g L(-1) lines.
- Taxon
- riceOryza sativat0
- Treatment
- 30 g L(-1) PEG linese0
- Outcome
- plant height, tiller number, leaf numbere0
- Direction
- highere0
- Qualifier
- under limited irrigatione0
- Comparator
- 50 g L(-1) PEG selected somaclone linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“30 g L(-1) PEG lines showed higher vegetative growth (plant height, tiller number, leaf number, shoot weight and root growth) as compared with 50 g L(-1) PEG selected somaclone lines under limited irrigation”
t0“rice cv PR113”
Claim · model-written summary
Under limited irrigation, 30 g L(-1) PEG lines had higher shoot weight and root growth than 50 g L(-1) lines.
- Taxon
- riceOryza sativat0
- Treatment
- 30 g L(-1) PEG linese0
- Outcome
- shoot weight and root growthe0
- Direction
- highere0
- Comparator
- 50 g L(-1) PEG selected somaclone linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“30 g L(-1) PEG lines showed higher vegetative growth (plant height, tiller number, leaf number, shoot weight and root growth) as compared with 50 g L(-1) PEG selected somaclone lines under limited irrigation”
t0“rice cv PR113”
Claim · model-written summary
Panicle length, panicle weight and grains per panicle were higher in 30 g L(-1) PEG lines than 50 g L(-1) lines.
- Taxon
- riceOryza sativat0
- Treatment
- 30 g L(-1) PEG linese0
- Outcome
- panicle length, panicle weight, grains per paniclee0
- Direction
- highere0
- Comparator
- 50 g L(-1) PEG linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield parameters-panicle length, panicle weight, grains per panicle, 1,000-grain weight, grain yield per plant, harvest index and grain straw ratio were also higher in 30 g L(-1) PEG lines as compared with 50 g L(-1) PEG lines”
t0“rice cv PR113”
Claim · model-written summary
Thousand-grain weight, grain yield per plant and harvest index were higher in 30 g L(-1) PEG lines.
- Taxon
- riceOryza sativat0
- Treatment
- 30 g L(-1) PEG linese0
- Outcome
- 1,000-grain weight, grain yield per plant, harvest indexe0
- Direction
- highere0
- Comparator
- 50 g L(-1) PEG linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1,000-grain weight, grain yield per plant, harvest index and grain straw ratio were also higher in 30 g L(-1) PEG lines as compared with 50 g L(-1) PEG lines”
t0“rice cv PR113”
Claim · model-written summary
Grain straw ratio was higher in 30 g L(-1) PEG lines.
- Taxon
- riceOryza sativat0
- Treatment
- 30 g L(-1) PEG linese0
- Outcome
- grain straw ratioe0
- Direction
- highere0
- Comparator
- 50 g L(-1) PEG linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain straw ratio were also higher in 30 g L(-1) PEG lines as compared with 50 g L(-1) PEG lines”
t0“rice cv PR113”
Claim · model-written summary
The authors conclude that 30 g L(-1) PEG somaclones are better suited to stress than 50 g L(-1) lines.
- Taxon
- riceOryza sativat0
- Outcome
- more suitede0
- Direction
- more suitede0
- Comparator
- 50 g L(-1) PEG selected somaclone linese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“30 g L(-1) PEG selected somaclone lines were more suited than 50 g L(-1) PEG selected somaclone lines under stress as compared with WT”
t0“rice cv PR113”
Claim · model-written summary
PEG-generated PR113 somaclones were drought tolerant in the field with better yield.
- Taxon
- riceOryza sativae0
- Outcome
- drought tolerant under field condition with better yielde0
- Direction
- bettere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice cv PR113 somaclones generated on PEG are found to be drought tolerant under field condition with better yield”
The same questions in other papers
poly(ethylene glycol) · growth · Oryza sativa (rice)Positive and negative results
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See all 29 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.