Abstract
Twelve cultivars of rice (Oryza sativa L.), representing deepwater, short-statured, and semidwarf types, were tested for their response to submergence. The magnitude of the response varied between cultivars; however, all cultivars responded to submergence by rapid growth once internodal elongation had started. Three of these cultivars were tested for elongation capacity at four ages. The deepwater rice was capable of rapid internodal elongation in response to submergence at 4 weeks of age. Growth of the short-statured and semidwarf cultivars was not stimulated by submergence until about 10 weeks of age. In air, the internodes of deepwater rice grew slower than did those of the short-statured and semidwarf cultivars. We also investigated the elongation response of stem sections of all 12 cultivars to an atmosphere containing 3% O(2), 6% CO(2), 91% N(2) (all by volume), and 1 microliter per liter ethylene. We found that the response of each of the non-deepwater cultivars was qualitatively and quantitatively similar to that of the deepwater rice.
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Claims 6
Claim · model-written summary
All twelve cultivars grew rapidly under submergence after internodal elongation began, with variable response magnitude.
- Taxon
- Rice
Oryza sativat0 - Treatment
- submergencee0
- Outcome
- rapid growthe0
- Qualifier
- once internodal elongation had startede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The magnitude of the response varied between cultivars; however, all cultivars responded to submergence by rapid growth once internodal elongation had started.”
t0“Rice”
Claim · model-written summary
Deepwater rice elongated internodes rapidly under submergence at four weeks.
- Taxon
- riceOryza sativae0
- Material
- deepwater ricee0
- Treatment
- submergencee0
- Outcome
- internodal elongatione0
- Direction
- rapide0
- Value
- 4 weeks of agee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The deepwater rice was capable of rapid internodal elongation in response to submergence at 4 weeks of age.”
Claim · model-written summary
Submergence did not stimulate growth of short-statured cultivars until about ten weeks.
- Taxon
- RiceOryza sativat0
- Material
- short-staturede0
- Treatment
- submergencee0
- Outcome
- Growthe0
- Direction
- not stimulatede0
- Value
- about 10 weeks of agee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth of the short-statured and semidwarf cultivars was not stimulated by submergence until about 10 weeks of age.”
t0“Rice”
Claim · model-written summary
Submergence did not stimulate growth of semidwarf cultivars until about ten weeks.
- Taxon
- RiceOryza sativat0
- Material
- semidwarfe0
- Treatment
- submergencee0
- Outcome
- Growthe0
- Direction
- not stimulatede0
- Value
- about 10 weeks of agee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth of the short-statured and semidwarf cultivars was not stimulated by submergence until about 10 weeks of age.”
t0“Rice”
Claim · model-written summary
In air, deepwater rice internodes grew more slowly than short-statured and semidwarf cultivars.
- Taxon
- riceOryza sativae0
- Material
- deepwater ricee0
- Outcome
- internodes of deepwater rice grew slowere0
- Direction
- slowere0
- Comparator
- short-statured and semidwarf cultivarse0
- Setting
- In aire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In air, the internodes of deepwater rice grew slower than did those of the short-statured and semidwarf cultivars.”
Claim · model-written summary
Stem sections of non-deepwater cultivars responded qualitatively and quantitatively similarly to deepwater rice under the tested gas mixture and ethylene.
- Taxon
- RiceOryza sativat0
- Material
- non-deepwater cultivarse0
- Treatment
- an atmosphere containing 3% O(2), 6% CO(2), 91% N(2) (all by volume), and 1 microliter per liter ethylenee1
- Outcome
- responsee0
- Direction
- similare0
- Comparator
- deepwater ricee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the response of each of the non-deepwater cultivars was qualitatively and quantitatively similar to that of the deepwater rice.”
e1“an atmosphere containing 3% O(2), 6% CO(2), 91% N(2) (all by volume), and 1 microliter per liter ethylene”
t0“Rice”
The same questions in other papers
flooding · growth · Oryza sativa (rice)Positive and negative results
63 papers in the same direction as this paper · 72 in the opposite direction · 2 reporting no difference from an alternative
- negative
- negative
- no effect
134 papers more in this group
See all 138 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.