Abstract
Drought and phosphorus (P) deficiency stress are two significant natural abiotic stresses restricting rice growth and yield worldwide. Developing rice varieties tolerant to drought and low P stress is crucial for sustainable agricultural production. To address these issues, two separate experiments were conducted using selected advanced rice breeding lines to study the impact of drought and low P stress on yield-attributing traits. The first experiment evaluated the drought stress tolerance of five advanced lines (Lines 14, 16, 20, and 22) under pot culture conditions by applying drought stress and not providing water throughout the reproductive stages (late booting to ripening). All genotypes under study exhibited a significant reduction in the yield of grain, ranging from 75.68% to 39.52%, as well as spikelet fertility and SPAD value when drought stress was applied; however, Line 20, BRRI dhan71, and Nerica 10 showed a less significant decrease. Conversely, days to first flowering, days to maturity, and the number of unfilled grains increased significantly in all of the genotypes studied; however, Line 20, BRRI dhan71, and Nerica10 showed a slight increase. Based on stress tolerance indices, Nerica 10, BRRI dhan71, and Line 20 are the best performers. In the second experiment, four advanced lines (Lines 3, 4, 6, and 20) were evaluated for low phosphorus (P) stress tolerance under conditions where no P fertilizer was applied. The application of low P stress significantly harmed all of the yield characteristics (excluding days to first flowering, days to maturity, and number of unfilled grains) of most of the genotypes, while Binadhan-17, Line 4, and Line 20 displayed a milder reduction, with overall grain yield reductions across genotypes ranging from 40.74% to 8.78%. Binadhan-17 and Line 20 showed higher stress tolerance indices and were classified as low P-tolerant genotypes. Considering both experimental results, the advanced breeding Line 20 was categorized as a promising advanced line. Therefore, Line 20 could be a potential donor parent for breeding drought and P deficiency-tolerant rice varieties.
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Claims 13
Claim · model-written summary
Drought stress significantly reduced grain yield in all studied rice genotypes, by 75.68% to 39.52%.
- Taxon
- Rice (Oryza sativa L.)
Oryza sativat0 - Treatment
- drought stresse2
- Outcome
- yield of graine1
- Direction
- reductione1
- Value
- 75.68% to 39.52%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e1“significant reduction in the yield of grain, ranging from 75.68% to 39.52%”
e2“when drought stress was applied”
Claim · model-written summary
Drought stress significantly reduced spikelet fertility and SPAD value in all studied rice genotypes.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Treatment
- drought stresse2
- Outcome
- spikelet fertility and SPAD valuee1
- Direction
- reductione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e1“significant reduction in the yield of grain, ranging from 75.68% to 39.52%, as well as spikelet fertility and SPAD value”
e2“when drought stress was applied”
Claim · model-written summary
Under drought stress, Line 20, BRRI dhan71 and Nerica 10 showed a less significant decrease in these traits than the other genotypes.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Line 20, BRRI dhan71, and Nerica 10e1
- Treatment
- drought stresse1
- Outcome
- less significant decreasee1
- Direction
- less significant decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e1“when drought stress was applied; however, Line 20, BRRI dhan71, and Nerica 10 showed a less significant decrease”
Claim · model-written summary
Under drought stress, days to first flowering, days to maturity and number of unfilled grains increased significantly in all studied genotypes.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Treatment
- drought stresse2
- Outcome
- days to first flowering, days to maturity, and the number of unfilled grainse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e1“days to first flowering, days to maturity, and the number of unfilled grains increased significantly in all of the genotypes studied”
e2“when drought stress was applied”
Claim · model-written summary
Line 20, BRRI dhan71 and Nerica 10 showed only a slight increase in days to first flowering, days to maturity and unfilled grains under drought.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Line 20, BRRI dhan71, and Nerica10e1
- Treatment
- drought stresse2
- Outcome
- days to first flowering, days to maturity, and the number of unfilled grainse1
- Direction
- slight increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e1“days to first flowering, days to maturity, and the number of unfilled grains increased significantly in all of the genotypes studied; however, Line 20, BRRI dhan71, and Nerica10 showed a slight increase”
e2“when drought stress was applied”
Claim · model-written summary
Based on stress tolerance indices, Nerica 10, BRRI dhan71 and Line 20 were the best performers under drought.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Nerica 10, BRRI dhan71, and Line 20e1
- Outcome
- best performerse1
- Qualifier
- stress tolerance indicese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e1“Based on stress tolerance indices, Nerica 10, BRRI dhan71, and Line 20 are the best performers”
Claim · model-written summary
Low P stress significantly harmed all yield characteristics of most rice genotypes, except days to first flowering, days to maturity and number of unfilled grains.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Treatment
- low P stresse1
- Outcome
- yield characteristicse1
- Direction
- harmede1
- Qualifier
- excluding days to first flowering, days to maturity, and number of unfilled grainse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e1“low P stress significantly harmed all of the yield characteristics (excluding days to first flowering, days to maturity, and number of unfilled grains) of most of the genotypes”
Claim · model-written summary
Under low P stress, Binadhan-17, Line 4 and Line 20 displayed a milder reduction than other genotypes.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Binadhan-17, Line 4, and Line 20e2
- Treatment
- low P stresse1
- Outcome
- milder reductione2
- Direction
- milder reductione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e1“The application of low P stress”
e2“while Binadhan-17, Line 4, and Line 20 displayed a milder reduction”
Claim · model-written summary
Overall grain yield reductions under low P stress across genotypes ranged from 40.74% to 8.78%.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Treatment
- low P stresse2
- Outcome
- grain yield reductionse1
- Direction
- reductionse1
- Value
- 40.74% to 8.78%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e1“overall grain yield reductions across genotypes ranging from 40.74% to 8.78%”
e2“The application of low P stress”
Claim · model-written summary
Binadhan-17 and Line 20 showed higher stress tolerance indices under low P stress.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Binadhan-17 and Line 20e1
- Outcome
- stress tolerance indicese1
- Direction
- highere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e1“Binadhan-17 and Line 20 showed higher stress tolerance indices and were classified as low P-tolerant genotypes”
Claim · model-written summary
Binadhan-17 and Line 20 were classified as low P-tolerant genotypes.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Binadhan-17 and Line 20e1
- Outcome
- low P-tolerant genotypese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e1“Binadhan-17 and Line 20 showed higher stress tolerance indices and were classified as low P-tolerant genotypes”
Claim · model-written summary
Considering both experiments, advanced breeding Line 20 was categorized as a promising advanced line.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Line 20e1
- Outcome
- promising advanced linee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa L.)”
e1“the advanced breeding Line 20 was categorized as a promising advanced line”
Claim · model-written summary
Line 20 could be a potential donor parent for breeding drought and P deficiency-tolerant rice varieties.
- Taxon
- riceOryza sativae1
- Material
- Line 20e1
- Outcome
- potential donor parente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Line 20 could be a potential donor parent for breeding drought and P deficiency-tolerant rice varieties”
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See all 475 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.