Abstract
In this study, 60 direct seeding rice varieties with different genotypes were used as experimental materials. Through long-term submergence treatment (7 d and 14 d), the responses of different genotypes to submergence stress were compared in germination and seedling emergence, stem, leaf and root elongation, starch and other storage material consumption. The results showed that there were significant differences in submergence tolerance of different genotypes at the germination and seedling stage. Through further analysis by statistical methods such as correlation analysis, principal component analysis, weight comprehensive evaluation and cluster analysis, 60 varieties could be divided into four categories: strong submergence tolerance, medium submergence tolerance, weak submergence tolerance and submergence sensitivity, while 6, 22, 4 and 28 varieties were screened respectively. After 14 d and 4 cm deep submergence, more than 78.1% of rice seeds could germinate, and the average plant height and root length could reach more than 11.99 cm and 9.66 cm respectively. The dry matter mass, starch content and soluble sugar content per plant were significantly higher than those of other tolerant types. The average coleoptile of the sensitive type was only 3.17 cm, and the radicle had little elongation. The evaluation and variety screening of submergence tolerance of different genotypes of direct seeding rice at the seedling stage can provide a theoretical basis for further clarifying the mechanism of rice submergence tolerance, screening suitable direct seeding varieties and cultivating special varieties of direct seeding rice.
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Claims 12
Claim · model-written summary
Submergence tolerance differs significantly among rice genotypes at the germination and seedling stage.
- Taxon
- rice
Oryza sativae0 - Material
- different genotypese0
- Organ / stage
- germination and seedling stagee2
- Outcome
- submergence tolerancee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“60 direct seeding rice varieties with different genotypes”
e2“there were significant differences in submergence tolerance of different genotypes at the germination and seedling stage”
Claim · model-written summary
The 60 rice varieties could be divided into four submergence tolerance categories.
- Taxon
- riceOryza sativae0
- Outcome
- divided into four categoriese3
- Qualifier
- strong submergence tolerance, medium submergence tolerance, weak submergence tolerance and submergence sensitivitye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“60 direct seeding rice varieties with different genotypes”
e3“60 varieties could be divided into four categories: strong submergence tolerance, medium submergence tolerance, weak submergence tolerance and submergence sensitivity, while 6, 22, 4 and 28 varieties were screened respectively”
Claim · model-written summary
Six rice varieties were screened into the strong submergence tolerance category.
- Taxon
- riceOryza sativae0
- Outcome
- varieties were screenede3
- Value
- 6e3
- Qualifier
- strong submergence tolerancee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“60 direct seeding rice varieties with different genotypes”
e3“60 varieties could be divided into four categories: strong submergence tolerance, medium submergence tolerance, weak submergence tolerance and submergence sensitivity, while 6, 22, 4 and 28 varieties were screened respectively”
Claim · model-written summary
Twenty-two rice varieties were screened into the medium submergence tolerance category.
- Taxon
- riceOryza sativae0
- Outcome
- varieties were screenede3
- Value
- 22e3
- Qualifier
- medium submergence tolerancee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“60 direct seeding rice varieties with different genotypes”
e3“60 varieties could be divided into four categories: strong submergence tolerance, medium submergence tolerance, weak submergence tolerance and submergence sensitivity, while 6, 22, 4 and 28 varieties were screened respectively”
Claim · model-written summary
Four rice varieties were screened into the weak submergence tolerance category.
- Taxon
- riceOryza sativae0
- Outcome
- varieties were screenede3
- Value
- 4e3
- Qualifier
- weak submergence tolerancee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“60 direct seeding rice varieties with different genotypes”
e3“60 varieties could be divided into four categories: strong submergence tolerance, medium submergence tolerance, weak submergence tolerance and submergence sensitivity, while 6, 22, 4 and 28 varieties were screened respectively”
Claim · model-written summary
Twenty-eight rice varieties were screened into the submergence sensitivity category.
- Taxon
- riceOryza sativae0
- Outcome
- varieties were screenede3
- Value
- 28e3
- Qualifier
- submergence sensitivitye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“60 direct seeding rice varieties with different genotypes”
e3“60 varieties could be divided into four categories: strong submergence tolerance, medium submergence tolerance, weak submergence tolerance and submergence sensitivity, while 6, 22, 4 and 28 varieties were screened respectively”
Claim · model-written summary
After 14 d and 4 cm deep submergence, more than 78.1% of rice seeds could germinate.
- Taxon
- riceOryza sativae4
- Treatment
- 14 d and 4 cm deep submergencee4
- Outcome
- seeds could germinatee4
- Value
- more than 78.1%e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“After 14 d and 4 cm deep submergence, more than 78.1% of rice seeds could germinate, and the average plant height and root length could reach more than 11.99 cm and 9.66 cm respectively”
Claim · model-written summary
After 14 d and 4 cm deep submergence, average plant height of rice reached 11.99 cm.
- Taxon
- riceOryza sativae4
- Treatment
- 14 d and 4 cm deep submergencee4
- Outcome
- plant heighte4
- Value
- 11.99 cme4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“After 14 d and 4 cm deep submergence, more than 78.1% of rice seeds could germinate, and the average plant height and root length could reach more than 11.99 cm and 9.66 cm respectively”
Claim · model-written summary
After 14 d and 4 cm deep submergence, average root length of rice reached 9.66 cm.
- Taxon
- riceOryza sativae4
- Treatment
- 14 d and 4 cm deep submergencee4
- Outcome
- root lengthe4
- Value
- 9.66 cme4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“After 14 d and 4 cm deep submergence, more than 78.1% of rice seeds could germinate, and the average plant height and root length could reach more than 11.99 cm and 9.66 cm respectively”
Claim · model-written summary
Under long-term submergence, dry matter mass, starch content and soluble sugar content per plant were significantly higher in the tolerant type than in other tolerant types.
- Taxon
- riceOryza sativae0
- Treatment
- long-term submergence treatmente1
- Outcome
- dry matter mass, starch content and soluble sugar content per plante5
- Direction
- significantly highere5
- Comparator
- other tolerant typese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“60 direct seeding rice varieties with different genotypes”
e1“Through long-term submergence treatment (7 d and 14 d)”
e5“The dry matter mass, starch content and soluble sugar content per plant were significantly higher than those of other tolerant types”
Claim · model-written summary
The sensitive type of rice had an average coleoptile of only 3.17 cm.
- Taxon
- riceOryza sativae0
- Material
- sensitive typee6
- Organ / stage
- coleoptilee6
- Outcome
- average coleoptilee6
- Value
- 3.17 cme6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“60 direct seeding rice varieties with different genotypes”
e6“The average coleoptile of the sensitive type was only 3.17 cm, and the radicle had little elongation”
Claim · model-written summary
The sensitive type of rice showed little radicle elongation.
- Taxon
- riceOryza sativae0
- Material
- sensitive typee6
- Organ / stage
- radiclee6
- Outcome
- elongatione6
- Direction
- littlee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“60 direct seeding rice varieties with different genotypes”
e6“The average coleoptile of the sensitive type was only 3.17 cm, and the radicle had little elongation”
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See all 12 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.