Abstract
Rice plants in the rainfed areas are mostly grown under fluctuating soil moisture. We examined responses in dry matter production, root development and water use to changing soil moisture in diverse rice cultivars. Rice plants were grown in polyvinyl chloride tubes under glasshouse conditions. Progressive drought right after planting greatly inhibited the shoot dry matter production, tiller development, nodal root development and water uptake in all cultivars tested. When the plants experienced soil submergence before being exposed to drought, all the cultivars exhibited higher dry matter production than their well-watered counterparts. Cultivar differences were clearly noted in the growth responses to rewatering after these plants were droughted. With well–watered control as basis, IRAT 109 and KDML 105 plants increased efficiency in converting available dry matter to increase their total root length by means of enhanced lateral root development. In the latter, however, the dry weight of roots also increased and so did root water uptake. In Dular, droughted plants did not show a clear response in terms of root development and water uptake to rewatering while its shoot growth was much more severely inhibited than the other cultivars. These findings suggest that phenotypic plasticity in the root system structure exhibited by promoted lateral root development and new nodal root production play a key role in the growth of rice under changing moisture level in the soil.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 8
Claim · model-written summary
Drought after planting inhibited rice shoot dry matter production and water uptake.
- Taxon
- Rice
Oryza sativat0 - Treatment
- Progressive drought right after plantinge0
- Outcome
- shoot dry matter production, tiller development, nodal root development and water uptakee0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Progressive drought right after planting greatly inhibited the shoot dry matter production, tiller development, nodal root development and water uptake in all cultivars tested.”
t0“Rice Cultivars”
Claim · model-written summary
Prior submergence followed by drought raised rice dry matter production above well-watered counterparts.
- Taxon
- RiceOryza sativat0
- Treatment
- soil submergence before being exposed to droughte0
- Outcome
- dry matter productione0
- Direction
- highere0
- Comparator
- well-watered counterpartse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the plants experienced soil submergence before being exposed to drought, all the cultivars exhibited higher dry matter production than their well-watered counterparts.”
t0“Rice Cultivars”
Claim · model-written summary
Rice cultivars differed in growth responses to rewatering after drought.
- Taxon
- RiceOryza sativat0
- Outcome
- growth responses to rewateringe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivar differences were clearly noted in the growth responses to rewatering after these plants were droughted.”
t0“Rice Cultivars”
Claim · model-written summary
IRAT 109 increased efficiency of dry matter conversion to root length through lateral root development.
- Taxon
- RiceOryza sativat0
- Material
- IRAT 109e0
- Outcome
- efficiency in converting available dry matter to increase their total root lengthe0
- Direction
- increasede0
- Comparator
- well–watered controle0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With well–watered control as basis, IRAT 109 and KDML 105 plants increased efficiency in converting available dry matter to increase their total root length by means of enhanced lateral root development.”
t0“Rice Cultivars”
Claim · model-written summary
KDML 105 increased efficiency of dry matter conversion to root length through lateral root development.
- Taxon
- RiceOryza sativat0
- Material
- KDML 105e0
- Outcome
- efficiency in converting available dry matter to increase their total root lengthe0
- Direction
- increasede0
- Comparator
- well–watered controle0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With well–watered control as basis, IRAT 109 and KDML 105 plants increased efficiency in converting available dry matter to increase their total root length by means of enhanced lateral root development.”
t0“Rice Cultivars”
Claim · model-written summary
KDML 105 root dry weight and root water uptake increased.
- Taxon
- RiceOryza sativat0
- Material
- KDML 105e1
- Outcome
- dry weight of rootse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the latter, however, the dry weight of roots also increased and so did root water uptake.”
e1“KDML 105”
t0“Rice Cultivars”
Claim · model-written summary
Dular root development and water uptake showed no clear response to rewatering after drought.
- Taxon
- RiceOryza sativat0
- Material
- Dulare0
- Treatment
- rewateringe0
- Outcome
- root development and water uptakee0
- Direction
- did not show a clear responsee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Dular, droughted plants did not show a clear response in terms of root development and water uptake to rewatering”
t0“Rice Cultivars”
Claim · model-written summary
Dular shoot growth was inhibited more severely than other cultivars.
- Taxon
- RiceOryza sativat0
- Material
- Dulare1
- Outcome
- shoot growthe0
- Direction
- more severely inhibitede0
- Comparator
- the other cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its shoot growth was much more severely inhibited than the other cultivars”
e1“In Dular”
t0“Rice Cultivars”
The same questions in other papers
rewatering · physiology: water · Oryza sativa (rice)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
2 papers more in this group
See all 6 papers →drought · physiology: water · Oryza sativa (rice)Positive and negative results
61 papers in the same direction as this paper · 30 in the opposite direction
- positive
- positive
- positive
88 papers more in this group
See all 92 papers →flooding · yield · Oryza sativa (rice)Positive and negative results
192 papers in the same direction as this paper · 82 in the opposite direction · 11 reporting no difference from an alternative
- no effect
- negative
- negative
282 papers more in this group
See all 286 papers →drought · yield · Oryza sativa (rice)Positive and negative results
75 papers in the same direction as this paper · 246 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- positive
- negative
321 papers more in this group
See all 325 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.