Abstract
Rice is relatively sensitive to salinity at reproductive stage. Screening of rice cultivars for salt tolerance at the reproductive stage is difficult at field conditions because of the heterogeneity of soil salinity. The present investigation aimed to characterize reproductive growth and yield potential of elite breeding lines in controlled saline environment at net house conditions. The experiment involved three advanced breeding lines, BR7100-R-6-6, IR78794-B-Sal29-1 and IR59418-7B-21-3 and a salt-tolerant check (BRRI dhan47) and susceptible check (BRRI dhan28) under four salinity levels (0, 4, 8, and 12 dS/m) at reproductive stage. The factorial experiment was conducted in randomized complete block design with three replications. Salinity × genotypes demonstrated significant interactions on some yield contributing characters and grain yield. Salinity stresses, at 8 and 12 dS/m, decreased plant height, tiller and panicle numbers, panicle length, filled grain number and grain yields of all the tested genotypes in different magnitude. The breeding line IR59418-7B-21-3 performed greater tolerance to salinity than other tested lines and check varieties. At 8 dS/m IR59418-7B-21-3 produced 72% relative grain yield compared to that of 31% in BRRI dhan47. The breeding lines, BR7100-R-6-6 and IR78794-B-Sal29-1 produced 40 and 59% relative grain yield respectively, at 8 dS/m. At 12 dS/m, all the tested genotypes produced less than 20% relative grain yield. Based on the salinity pressure (8 dS/m) at the reproductive stage, IR59418-7B-21-3 produced 68% higher yield than that of BRRI dhan47. BR7100-R-6-6 and IR78794-B-Sal29-1 out yielded BRRI dhan47 by 45 and 49% respectively. All the three breeding lines performed better than that of BRRI dhan47 in terms of salinity tolerance at the reproductive stage.Bangladesh Rice j. 2014, 18(1&2): 33-37
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Claims 10
Claim · model-written summary
Salinity and genotype interacted significantly for yield components and grain yield.
- Taxon
- Rice
Oryza sativae1 - Treatment
- Salinitye0
- Outcome
- yield contributing characters and grain yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity × genotypes demonstrated significant interactions on some yield contributing characters and grain yield.”
e1“Rice is relatively sensitive to salinity at reproductive stage.”
Claim · model-written summary
Salinity at 8 and 12 dS/m decreased height, tillers and panicles, panicle length, filled grains and yield across genotypes.
- Taxon
- RiceOryza sativae1
- Treatment
- Salinity stresses, at 8 and 12 dS/me0
- Outcome
- plant height, tiller and panicle numbers, panicle length, filled grain number and grain yieldse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity stresses, at 8 and 12 dS/m, decreased plant height, tiller and panicle numbers, panicle length, filled grain number and grain yields of all the tested genotypes in different magnitude.”
e1“Rice is relatively sensitive to salinity at reproductive stage.”
Claim · model-written summary
IR59418-7B-21-3 had greater salinity tolerance than tested lines and checks.
- Taxon
- RiceOryza sativae1
- Material
- IR59418-7B-21-3e0
- Outcome
- tolerance to salinitye0
- Direction
- greatere0
- Comparator
- other tested lines and check varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The breeding line IR59418-7B-21-3 performed greater tolerance to salinity than other tested lines and check varieties.”
e1“Rice is relatively sensitive to salinity at reproductive stage.”
Claim · model-written summary
At 8 dS/m IR59418-7B-21-3 produced 72% relative grain yield.
- Taxon
- RiceOryza sativae1
- Material
- IR59418-7B-21-3e0
- Outcome
- relative grain yielde0
- Value
- 72%e0
- Qualifier
- 8 dS/me0
- Comparator
- BRRI dhan47e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 8 dS/m IR59418-7B-21-3 produced 72% relative grain yield compared to that of 31% in BRRI dhan47.”
e1“Rice is relatively sensitive to salinity at reproductive stage.”
Claim · model-written summary
At 8 dS/m BR7100-R-6-6 produced 40% relative grain yield.
- Taxon
- RiceOryza sativae1
- Material
- BR7100-R-6-6e0
- Outcome
- relative grain yielde0
- Value
- 40e0
- Qualifier
- 8 dS/me0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The breeding lines, BR7100-R-6-6 and IR78794-B-Sal29-1 produced 40 and 59% relative grain yield respectively, at 8 dS/m.”
e1“Rice is relatively sensitive to salinity at reproductive stage.”
Claim · model-written summary
At 8 dS/m IR78794-B-Sal29-1 produced 59% relative grain yield.
- Taxon
- RiceOryza sativae1
- Material
- IR78794-B-Sal29-1e0
- Outcome
- relative grain yielde0
- Value
- 59%e0
- Qualifier
- 8 dS/me0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The breeding lines, BR7100-R-6-6 and IR78794-B-Sal29-1 produced 40 and 59% relative grain yield respectively, at 8 dS/m.”
e1“Rice is relatively sensitive to salinity at reproductive stage.”
Claim · model-written summary
At 12 dS/m all tested genotypes produced under 20% relative grain yield.
- Taxon
- RiceOryza sativae1
- Outcome
- relative grain yielde0
- Direction
- less thane0
- Value
- less than 20%e0
- Qualifier
- 12 dS/me0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 12 dS/m, all the tested genotypes produced less than 20% relative grain yield.”
e1“Rice is relatively sensitive to salinity at reproductive stage.”
Claim · model-written summary
At 8 dS/m IR59418-7B-21-3 yielded 68% more than BRRI dhan47.
- Taxon
- RiceOryza sativae1
- Material
- IR59418-7B-21-3e0
- Outcome
- yielde0
- Direction
- highere0
- Value
- 68%e0
- Comparator
- BRRI dhan47e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“IR59418-7B-21-3 produced 68% higher yield than that of BRRI dhan47.”
e1“Rice is relatively sensitive to salinity at reproductive stage.”
Claim · model-written summary
BR7100-R-6-6 outyielded BRRI dhan47 by 45%.
- Taxon
- RiceOryza sativae1
- Material
- BR7100-R-6-6e0
- Outcome
- yieldede0
- Direction
- out yieldede0
- Value
- 45e0
- Comparator
- BRRI dhan47e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BR7100-R-6-6 and IR78794-B-Sal29-1 out yielded BRRI dhan47 by 45 and 49% respectively.”
e1“Rice is relatively sensitive to salinity at reproductive stage.”
Claim · model-written summary
IR78794-B-Sal29-1 outyielded BRRI dhan47 by 49%.
- Taxon
- RiceOryza sativae1
- Material
- IR78794-B-Sal29-1e0
- Outcome
- yieldede0
- Direction
- out yieldede0
- Value
- 49%e0
- Comparator
- BRRI dhan47e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BR7100-R-6-6 and IR78794-B-Sal29-1 out yielded BRRI dhan47 by 45 and 49% respectively.”
e1“Rice is relatively sensitive to salinity at reproductive stage.”
The same questions in other papers
salinity · yield · Oryza sativa (rice)Positive and negative results
137 papers in the same direction as this paper · 29 in the opposite direction
- negative
- negative
- negative
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See all 167 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.