Abstract
Hybrid rice typically surpasses conventional rice in terms of biomass, yield, and stress resistance, whereas developing and utilizing saline–alkali-tolerant hybrid rice is crucial to obtain crop harvests from salt-affected soils. In the present study, conventional rice varieties (paternal parents), i.e., Hua-Zhan and 9311, and four hybrid varieties, i.e., Xiang-Liang-You-Hua-Zhan, Jing-Liang-You-Hua-Zhan, Guang-8-You-Hua-Zhan, and Y-Liang-You-1-Hao, denoted as V1, V2, V3, V4, V5, and V6, respectively, received an application of two salt levels, i.e., 0% and 0.3% saltwater irrigation, during 2022–2023. The results reveal that the V1 (parental parent) had the highest salt tolerance index, which was significantly greater than that of its hybrid rice varieties, i.e., V3, V4, and V5. Moreover, the salt tolerance index of V2 (paternal parent) was also greater than that of its hybrid rice (V6). The lower salt tolerance index of the hybrid varieties might be owing to the lower relative loss number of effective panicles, total number of grains per panicle, seed setting rate, and thousand-grain weight. Moreover, our study revealed that the appearance of different rice varieties was enhanced at a salt concentration of 0.3%. Among all the rice cultivars, the largest reductions in chalkiness and chalky grain rate were observed in hybrid rice V3, i.e., 81.13% and 63.49%, as well as V6, i.e., 84.03% and 87.53%, respectively. The protein and sodium contents and sodium-potassium ratio of all the rice cultivars increased significantly under salt stress; however, no significant effect on cooking or sensory quality were noticed in all rice varieties under saline conditions. Overall, salt stress negatively affected the grain yield and quality, but hybrid rice is more salt-tolerant than conventional rice, harnessing heterosis to improve the yield of saline-tolerant rice.
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Claims 12
Claim · model-written summary
V1, a parental rice line, had the highest salt tolerance index, significantly greater than hybrid varieties V3, V4 and V5.
- Taxon
- rice
Oryza sativae1 - Material
- V1e1
- Outcome
- salt tolerance indexe1
- Direction
- higheste1
- Comparator
- V3, V4, and V5e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hybrid rice typically surpasses conventional rice in terms of biomass, yield, and stress resistance”
e1“the V1 (parental parent) had the highest salt tolerance index, which was significantly greater than that of its hybrid rice varieties, i.e., V3, V4, and V5”
Claim · model-written summary
V2, a parental rice line, had a salt tolerance index greater than its hybrid V6.
- Taxon
- riceOryza sativae2
- Material
- V2e2
- Outcome
- salt tolerance indexe2
- Direction
- greatere2
- Comparator
- its hybrid rice (V6)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“the salt tolerance index of V2 (paternal parent) was also greater than that of its hybrid rice (V6)”
Claim · model-written summary
The lower salt tolerance index of hybrid rice might be owing to lower relative losses of effective panicles, grains per panicle, seed setting rate and thousand-grain weight.
- Taxon
- riceOryza sativae0
- Outcome
- salt tolerance indexe3
- Qualifier
- lower relative loss number of effective panicles, total number of grains per panicle, seed setting rate, and thousand-grain weighte3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hybrid rice typically surpasses conventional rice in terms of biomass, yield, and stress resistance”
e3“The lower salt tolerance index of the hybrid varieties might be owing to the lower relative loss number of effective panicles, total number of grains per panicle, seed setting rate, and thousand-grain weight”
Claim · model-written summary
The appearance of different rice varieties was enhanced at a salt concentration of 0.3%.
- Taxon
- riceOryza sativae4
- Treatment
- a salt concentration of 0.3%e4
- Outcome
- appearancee4
- Direction
- enhancede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“the appearance of different rice varieties was enhanced at a salt concentration of 0.3%”
Claim · model-written summary
Hybrid rice V3 showed the largest reduction in chalkiness, 81.13%.
- Taxon
- hybrid riceOryza sativae5
- Material
- V3e5
- Outcome
- chalkinesse5
- Direction
- largest reductionse5
- Value
- 81.13%e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“the largest reductions in chalkiness and chalky grain rate were observed in hybrid rice V3, i.e., 81.13% and 63.49%, as well as V6, i.e., 84.03% and 87.53%, respectively”
Claim · model-written summary
Hybrid rice V3 showed the largest reduction in chalky grain rate, 63.49%.
- Taxon
- hybrid riceOryza sativae5
- Material
- V3e5
- Outcome
- chalky grain ratee5
- Direction
- largest reductionse5
- Value
- 63.49%e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“the largest reductions in chalkiness and chalky grain rate were observed in hybrid rice V3, i.e., 81.13% and 63.49%, as well as V6, i.e., 84.03% and 87.53%, respectively”
Claim · model-written summary
Hybrid rice V6 showed the largest reduction in chalkiness, 84.03%.
- Taxon
- hybrid riceOryza sativae5
- Material
- V6e5
- Outcome
- chalkinesse5
- Direction
- largest reductionse5
- Value
- 84.03%e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“the largest reductions in chalkiness and chalky grain rate were observed in hybrid rice V3, i.e., 81.13% and 63.49%, as well as V6, i.e., 84.03% and 87.53%, respectively”
Claim · model-written summary
Hybrid rice V6 showed the largest reduction in chalky grain rate, 87.53%.
- Taxon
- hybrid riceOryza sativae5
- Material
- V6e5
- Outcome
- chalky grain ratee5
- Direction
- largest reductionse5
- Value
- 87.53%e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“the largest reductions in chalkiness and chalky grain rate were observed in hybrid rice V3, i.e., 81.13% and 63.49%, as well as V6, i.e., 84.03% and 87.53%, respectively”
Claim · model-written summary
Protein and sodium contents and the sodium-potassium ratio of all rice cultivars increased significantly under salt stress.
- Taxon
- riceOryza sativae6
- Treatment
- salt stresse6
- Outcome
- protein and sodium contents and sodium-potassium ratioe6
- Direction
- increasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The protein and sodium contents and sodium-potassium ratio of all the rice cultivars increased significantly under salt stress”
Claim · model-written summary
Salt stress had no significant effect on cooking or sensory quality of rice varieties.
- Taxon
- riceOryza sativae7
- Treatment
- saline conditionse7
- Outcome
- cooking or sensory qualitye7
- Direction
- no significant effecte7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“no significant effect on cooking or sensory quality were noticed in all rice varieties under saline conditions”
Claim · model-written summary
Salt stress negatively affected grain yield and quality.
- Taxon
- riceOryza sativae0
- Treatment
- salt stresse1
- Outcome
- grain yield and qualitye1
- Direction
- negatively affectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hybrid rice typically surpasses conventional rice in terms of biomass, yield, and stress resistance”
e1“salt stress negatively affected the grain yield and quality”
Claim · model-written summary
Hybrid rice is more salt-tolerant than conventional rice.
- Taxon
- riceOryza sativae1
- Outcome
- salt-tolerante1
- Direction
- moree1
- Comparator
- conventional ricee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“hybrid rice is more salt-tolerant than conventional rice”
The same questions in other papers
salinity · quality: general · Oryza sativa (rice)Results differ
9 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
7 papers more in this group
See all 11 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.