Abstract
Abstract Salinity and alkalinity (sodicity) seriously threaten rice production in south Asia. Improving screening methodologies for identifying sources of tolerance is crucial for breeding salt tolerant rices. Rice genotypes of varying tolerance (tolerant, semi‐tolerant and sensitive) were screened in saline soil of electrical conductivity, ECe 4 and 8 dS/m and alkali soil of pH 9.5 and 9.8 in lysimeters. Vegetative growth events were less affected by both the stresses in comparison to reproductive stage. Grain yield was reduced by 26.7%, 45.7% and 50.3% at ECe 8 dS/m in three tolerance groups respectively. At pH 9.8 the reduction was 25.1%, 37.2% and 67.6% in the three groups respectively. Higher floret fertility contributed to higher seed set and grain yields in tolerant genotypes whereas higher spikelet sterility led to poor seed set and lower grain yields in sensitive genotypes. The 1000 grains weight was also significantly reduced at ECe 4 or pH 9.8. Screening at reproductive stage for morphological traits like floret fertility is thus more useful to identify rice genotypes tolerant to both salinity and alkalinity stress. Genotypic (G) and environmental (E) effects and GE interactions were highly significant for the growth attributes and grain yield. Based on analysis of variance, genotypes tolerant to salinity and alkalinity as well to both the stresses were identified.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 15
Claim · model-written summary
Grain yield of tolerant rice genotypes was reduced by 26.7% at ECe 8 dS/m.
- Taxon
- rice
Oryza sativat0 - Material
- tolerante0
- Organ / stage
- Reproductive staget0
- Treatment
- ECe 8 dS/me1
- Outcome
- Grain yielde1
- Direction
- reducede1
- Value
- 26.7%e1
- Setting
- lysimeterse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice genotypes of varying tolerance (tolerant, semi‐tolerant and sensitive) were screened in saline soil of electrical conductivity, ECe 4 and 8 dS/m and alkali soil of pH 9.5 and 9.8 in lysimeters”
e1“Grain yield was reduced by 26.7%, 45.7% and 50.3% at ECe 8 dS/m in three tolerance groups respectively”
t0“Reproductive stage tolerance to salinity and alkalinity stresses in rice genotypes”
Claim · model-written summary
Grain yield of semi-tolerant rice genotypes was reduced by 45.7% at ECe 8 dS/m.
- Taxon
- riceOryza sativat0
- Material
- semi‐tolerante0
- Organ / stage
- Reproductive staget0
- Treatment
- ECe 8 dS/me1
- Outcome
- Grain yielde1
- Direction
- reducede1
- Value
- 45.7%e1
- Setting
- lysimeterse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice genotypes of varying tolerance (tolerant, semi‐tolerant and sensitive) were screened in saline soil of electrical conductivity, ECe 4 and 8 dS/m and alkali soil of pH 9.5 and 9.8 in lysimeters”
e1“Grain yield was reduced by 26.7%, 45.7% and 50.3% at ECe 8 dS/m in three tolerance groups respectively”
t0“Reproductive stage tolerance to salinity and alkalinity stresses in rice genotypes”
Claim · model-written summary
Grain yield of sensitive rice genotypes was reduced by 50.3% at ECe 8 dS/m.
- Taxon
- riceOryza sativat0
- Material
- sensitivee0
- Organ / stage
- Reproductive staget0
- Treatment
- ECe 8 dS/me1
- Outcome
- Grain yielde1
- Direction
- reducede1
- Value
- 50.3%e1
- Setting
- lysimeterse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice genotypes of varying tolerance (tolerant, semi‐tolerant and sensitive) were screened in saline soil of electrical conductivity, ECe 4 and 8 dS/m and alkali soil of pH 9.5 and 9.8 in lysimeters”
e1“Grain yield was reduced by 26.7%, 45.7% and 50.3% at ECe 8 dS/m in three tolerance groups respectively”
t0“Reproductive stage tolerance to salinity and alkalinity stresses in rice genotypes”
Claim · model-written summary
Grain yield of tolerant rice genotypes was reduced by 25.1% at pH 9.8.
- Taxon
- riceOryza sativat0
- Material
- tolerante0
- Organ / stage
- Reproductive staget0
- Treatment
- pH 9.8e2
- Outcome
- Grain yielde1
- Direction
- reductione2
- Value
- 25.1%e2
- Setting
- lysimeterse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice genotypes of varying tolerance (tolerant, semi‐tolerant and sensitive) were screened in saline soil of electrical conductivity, ECe 4 and 8 dS/m and alkali soil of pH 9.5 and 9.8 in lysimeters”
e1“Grain yield was reduced by 26.7%, 45.7% and 50.3% at ECe 8 dS/m in three tolerance groups respectively”
e2“At pH 9.8 the reduction was 25.1%, 37.2% and 67.6% in the three groups respectively”
t0“Reproductive stage tolerance to salinity and alkalinity stresses in rice genotypes”
Claim · model-written summary
Grain yield of semi-tolerant rice genotypes was reduced by 37.2% at pH 9.8.
- Taxon
- riceOryza sativat0
- Material
- semi‐tolerante0
- Organ / stage
- Reproductive staget0
- Treatment
- pH 9.8e2
- Outcome
- Grain yielde1
- Direction
- reductione2
- Value
- 37.2%e2
- Setting
- lysimeterse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice genotypes of varying tolerance (tolerant, semi‐tolerant and sensitive) were screened in saline soil of electrical conductivity, ECe 4 and 8 dS/m and alkali soil of pH 9.5 and 9.8 in lysimeters”
e1“Grain yield was reduced by 26.7%, 45.7% and 50.3% at ECe 8 dS/m in three tolerance groups respectively”
e2“At pH 9.8 the reduction was 25.1%, 37.2% and 67.6% in the three groups respectively”
t0“Reproductive stage tolerance to salinity and alkalinity stresses in rice genotypes”
Claim · model-written summary
Grain yield of sensitive rice genotypes was reduced by 67.6% at pH 9.8.
- Taxon
- riceOryza sativat0
- Material
- sensitivee0
- Organ / stage
- Reproductive staget0
- Treatment
- pH 9.8e2
- Outcome
- Grain yielde1
- Direction
- reductione2
- Value
- 67.6%e2
- Setting
- lysimeterse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice genotypes of varying tolerance (tolerant, semi‐tolerant and sensitive) were screened in saline soil of electrical conductivity, ECe 4 and 8 dS/m and alkali soil of pH 9.5 and 9.8 in lysimeters”
e1“Grain yield was reduced by 26.7%, 45.7% and 50.3% at ECe 8 dS/m in three tolerance groups respectively”
e2“At pH 9.8 the reduction was 25.1%, 37.2% and 67.6% in the three groups respectively”
t0“Reproductive stage tolerance to salinity and alkalinity stresses in rice genotypes”
Claim · model-written summary
Higher floret fertility was associated with higher seed set in tolerant genotypes.
- Taxon
- riceOryza sativat0
- Material
- tolerant genotypese3
- Outcome
- seed sete3
- Direction
- highere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Higher floret fertility contributed to higher seed set and grain yields in tolerant genotypes whereas higher spikelet sterility led to poor seed set and lower grain yields in sensitive genotypes”
t0“Reproductive stage tolerance to salinity and alkalinity stresses in rice genotypes”
Claim · model-written summary
Higher spikelet sterility was associated with lower grain yields in sensitive genotypes.
- Taxon
- riceOryza sativat0
- Material
- sensitive genotypese3
- Outcome
- grain yieldse3
- Direction
- lowere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Higher floret fertility contributed to higher seed set and grain yields in tolerant genotypes whereas higher spikelet sterility led to poor seed set and lower grain yields in sensitive genotypes”
t0“Reproductive stage tolerance to salinity and alkalinity stresses in rice genotypes”
Claim · model-written summary
Higher spikelet sterility was associated with poor seed set in sensitive genotypes.
- Taxon
- riceOryza sativat0
- Material
- sensitive genotypese3
- Outcome
- seed sete3
- Direction
- poore3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Higher floret fertility contributed to higher seed set and grain yields in tolerant genotypes whereas higher spikelet sterility led to poor seed set and lower grain yields in sensitive genotypes”
t0“Reproductive stage tolerance to salinity and alkalinity stresses in rice genotypes”
Claim · model-written summary
Grain yields were higher in tolerant genotypes associated with higher floret fertility.
- Taxon
- riceOryza sativat0
- Material
- tolerant genotypese3
- Outcome
- grain yieldse3
- Direction
- highere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Higher floret fertility contributed to higher seed set and grain yields in tolerant genotypes whereas higher spikelet sterility led to poor seed set and lower grain yields in sensitive genotypes”
t0“Reproductive stage tolerance to salinity and alkalinity stresses in rice genotypes”
Claim · model-written summary
Screening at the reproductive stage for morphological traits such as floret fertility is more useful for identifying rice genotypes tolerant to both salinity and alkalinity.
- Taxon
- rice genotypesOryza sativae5
- Outcome
- Screening at reproductive stage for morphological traits like floret fertilitye5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Screening at reproductive stage for morphological traits like floret fertility is thus more useful to identify rice genotypes tolerant to both salinity and alkalinity stress”
Claim · model-written summary
Vegetative growth events were less affected by both stresses than reproductive-stage traits.
- Taxon
- riceOryza sativat0
- Treatment
- both the stressese6
- Outcome
- Vegetative growth eventse6
- Direction
- less affectede6
- Comparator
- reproductive stagee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Vegetative growth events were less affected by both the stresses in comparison to reproductive stage”
t0“Reproductive stage tolerance to salinity and alkalinity stresses in rice genotypes”
Claim · model-written summary
The 1000 grains weight of rice was significantly reduced at ECe 4 or pH 9.8.
- Taxon
- riceOryza sativat0
- Treatment
- ECe 4 or pH 9.8e4
- Outcome
- 1000 grains weighte4
- Direction
- significantly reducede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The 1000 grains weight was also significantly reduced at ECe 4 or pH 9.8”
t0“Reproductive stage tolerance to salinity and alkalinity stresses in rice genotypes”
Claim · model-written summary
Genotypic and environmental effects and GE interactions were highly significant for growth attributes and grain yield.
- Taxon
- riceOryza sativat0
- Outcome
- growth attributes and grain yielde7
- Qualifier
- Genotypic (G) and environmental (E) effects and GE interactionse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Genotypic (G) and environmental (E) effects and GE interactions were highly significant for the growth attributes and grain yield”
t0“Reproductive stage tolerance to salinity and alkalinity stresses in rice genotypes”
Claim · model-written summary
Genotypes tolerant to salinity and alkalinity, as well as to both stresses, were identified.
- Taxon
- riceOryza sativat0
- Outcome
- genotypes tolerant to salinity and alkalinity as well to both the stressese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Based on analysis of variance, genotypes tolerant to salinity and alkalinity as well to both the stresses were identified”
t0“Reproductive stage tolerance to salinity and alkalinity stresses in rice genotypes”
The same questions in other papers
ph · yield · Oryza sativa (rice)Positive and negative results
3 papers in the same direction as this paper · 12 in the opposite direction
- positive
- positive
- positive
12 papers more in this group
See all 16 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.