Abstract
As for the effects of water stress on the rice growth,previous studies paid main attention to its negative effects and concluded normally that water stress would result in rice growth stunt and yield decrease.However,the present studies explored its positive effects from a view of the compensatory effects of rice to water stress.Main results obtained were as follows: ① Low water stress not only did not result in rice yield decrease,but also increased the yield by 3.6%.Compensatory effects were also found in the growth of both shoots and roots of rice.Low water stress significantly increased the matter translocation ratio of rice stem and sheath.Although low water stress treatment inhibited the growth of rice roots at its middle growth stage,it delayed the senescence of rice roots during the late growth period of rice.② Although both the medium and the heavy water stress inhibited rice dry matter accumulation and roots growth of rice at its early and middle growth stages,the compensatory effects were also found in roots growth at the later growth stage.Namely,the decrement of dry matter,total length and surface area of rice roots of those treatments were significantly lower than that of the control.However,the compensatory effects could not balance the loss at the early and middle growth stages,so that the rice yields under medium and heavy water stresses were all significantly lower than that of control.
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Claims 8
Claim · model-written summary
Low water stress increased rice yield by 3.6% rather than decreasing it.
- Taxon
- rice
Oryza sativat0 - Treatment
- Low water stresse1
- Outcome
- rice yielde1
- Direction
- increasede1
- Value
- 3.6%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Yield”
e1“Low water stress not only did not result in rice yield decrease,but also increased the yield by 3.6%”
Claim · model-written summary
Low water stress significantly increased the matter translocation ratio of rice stem and sheath.
- Taxon
- riceOryza sativat0
- Organ / stage
- stem and sheathe3
- Treatment
- Low water stresse3
- Outcome
- matter translocation ratioe3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Yield”
e3“Low water stress significantly increased the matter translocation ratio of rice stem and sheath”
Claim · model-written summary
Low water stress inhibited the growth of rice roots at the middle growth stage.
- Taxon
- riceOryza sativat0
- Organ / stage
- rice roots at its middle growth stagee4
- Treatment
- low water stress treatmente4
- Outcome
- growth of rice rootse4
- Direction
- inhibitede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Yield”
e4“Although low water stress treatment inhibited the growth of rice roots at its middle growth stage,it delayed the senescence of rice roots during the late growth period of rice”
Claim · model-written summary
Low water stress delayed the senescence of rice roots during the late growth period.
- Taxon
- riceOryza sativat0
- Organ / stage
- late growth periode4
- Treatment
- low water stress treatmente4
- Outcome
- senescence of rice rootse4
- Direction
- delayede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Yield”
e4“Although low water stress treatment inhibited the growth of rice roots at its middle growth stage,it delayed the senescence of rice roots during the late growth period of rice”
Claim · model-written summary
Medium and heavy water stress inhibited rice dry matter accumulation and root growth at the early and middle growth stages.
- Taxon
- riceOryza sativat0
- Organ / stage
- early and middle growth stagese6
- Treatment
- the medium and the heavy water stresse6
- Outcome
- dry matter accumulation and roots growthe6
- Direction
- inhibitede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Yield”
e6“Although both the medium and the heavy water stress inhibited rice dry matter accumulation and roots growth of rice at its early and middle growth stages”
Claim · model-written summary
The decrement in dry matter, total length and surface area of rice roots under medium and heavy water stress was significantly lower than in the control at the later growth stage.
- Taxon
- riceOryza sativat0
- Treatment
- the medium and the heavy water stresse6
- Outcome
- decrement of dry matter,total length and surface area of rice rootse7
- Direction
- lowere7
- Comparator
- controle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Yield”
e6“Although both the medium and the heavy water stress inhibited rice dry matter accumulation and roots growth of rice at its early and middle growth stages”
e7“the decrement of dry matter,total length and surface area of rice roots of those treatments were significantly lower than that of the control”
Claim · model-written summary
Rice yields under medium and heavy water stress were significantly lower than in the control.
- Taxon
- riceOryza sativat0
- Treatment
- medium and heavy water stressese5
- Outcome
- rice yieldse5
- Direction
- lowere5
- Comparator
- controle5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Yield”
e5“the rice yields under medium and heavy water stresses were all significantly lower than that of control”
Claim · model-written summary
Compensatory effects were found in the growth of both shoots and roots of rice under low water stress.
- Taxon
- riceOryza sativat0
- Treatment
- Low water stresse1
- Outcome
- growth of both shoots and rootse2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Yield”
e1“Low water stress not only did not result in rice yield decrease,but also increased the yield by 3.6%”
e2“Compensatory effects were also found in the growth of both shoots and roots of rice”
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