Abstract
The aerobic rice system is a new promising water-saving cultivation technique; however, rice sensitivity to aerobic conditions limits its use. We investigated morphological and physiological responses of seedlings of two upland rice genotypes (Beodien and Sensho) and two lowland rice genotypes (KD18 and Koshihikari) to flooded condition (control) and three aerobic conditions (32, 22, and 14% soil moisture content (SMC), w/w) in 2013 and to a flooded condition and aerobic condition (32% SMC) in 2014. Under aerobic conditions, shoot growth was limited because of a reduction in water uptake. Water uptake capacity was highly controlled by root traits such as root dry weight and root length. Under aerobic conditions, leaf water potential, stomatal conductance, and root hydraulic conductance declined. We found that the 32% SMC condition was the most favorable aerobic condition whereas 22% and 14% SMC conditions strongly suppressed rice growth. Genotypic variations in physio-morphological traits were more clearly detected under well-irrigated conditions (32% SMC) than other two aerobic conditions. In both years, cultivar Sensho adapted to the 32% SMC condition, whereas Koshihikari did not adapt to the aerobic rice system, probably because of its limited root growth and lower root plasticity. The positive correlation between root traits and water uptake indicate that root traits are important for improving rice performance under an aerobic rice system.
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 10
Claim · model-written summary
Aerobic conditions limited shoot growth through reduced water uptake.
- Taxon
- Rice (Oryza sativa L.)
Oryza sativat0 - Outcome
- shoot growth was limitede0
- Qualifier
- reduction in water uptakee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under aerobic conditions, shoot growth was limited because of a reduction in water uptake.”
t0“Genotypic Variation in Morphological and Physiological Characteristics of Rice (Oryza sativa L.) under Aerobic Conditions”
t1“flooded condition (control)”
Claim · model-written summary
Root dry weight and root length strongly controlled water uptake capacity.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Organ / stage
- roote0
- Outcome
- Water uptake capacitye0
- Qualifier
- root dry weight and root lengthe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water uptake capacity was highly controlled by root traits such as root dry weight and root length.”
t0“Genotypic Variation in Morphological and Physiological Characteristics of Rice (Oryza sativa L.) under Aerobic Conditions”
t1“flooded condition (control)”
Claim · model-written summary
Leaf water potential and stomatal and root hydraulic conductance declined under aerobic conditions.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Treatment
- aerobic conditionse0
- Outcome
- leaf water potential, stomatal conductance, and root hydraulic conductancee0
- Direction
- declinede0
- Comparator
- flooded condition (control)t1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under aerobic conditions, leaf water potential, stomatal conductance, and root hydraulic conductance declined.”
t0“Genotypic Variation in Morphological and Physiological Characteristics of Rice (Oryza sativa L.) under Aerobic Conditions”
t1“flooded condition (control)”
Claim · model-written summary
The 32% soil moisture condition was the most favorable aerobic condition.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Outcome
- most favorable aerobic conditione0
- Value
- 32% SMCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 32% SMC condition was the most favorable aerobic condition”
t0“Genotypic Variation in Morphological and Physiological Characteristics of Rice (Oryza sativa L.) under Aerobic Conditions”
t1“flooded condition (control)”
Claim · model-written summary
The 22% soil moisture condition strongly suppressed rice growth.
- Taxon
- riceOryza sativae0
- Treatment
- 22%e0
- Outcome
- rice growthe0
- Direction
- suppressede0
- Comparator
- flooded condition (control)t1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“22% and 14% SMC conditions strongly suppressed rice growth.”
t0“Genotypic Variation in Morphological and Physiological Characteristics of Rice (Oryza sativa L.) under Aerobic Conditions”
t1“flooded condition (control)”
Claim · model-written summary
The 14% soil moisture condition strongly suppressed rice growth.
- Taxon
- riceOryza sativae0
- Treatment
- 14% SMCe0
- Outcome
- rice growthe0
- Direction
- suppressede0
- Comparator
- flooded condition (control)t1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“22% and 14% SMC conditions strongly suppressed rice growth.”
t0“Genotypic Variation in Morphological and Physiological Characteristics of Rice (Oryza sativa L.) under Aerobic Conditions”
t1“flooded condition (control)”
Claim · model-written summary
Genotypic variation in physiological and morphological traits was clearer at 32% soil moisture than at drier aerobic conditions.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Outcome
- Genotypic variations in physio-morphological traitse0
- Direction
- more clearly detectede0
- Value
- 32% SMCe0
- Comparator
- other two aerobic conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genotypic variations in physio-morphological traits were more clearly detected under well-irrigated conditions (32% SMC) than other two aerobic conditions.”
t0“Genotypic Variation in Morphological and Physiological Characteristics of Rice (Oryza sativa L.) under Aerobic Conditions”
t1“flooded condition (control)”
Claim · model-written summary
Sensho adapted to the 32% soil moisture condition in both years.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Senshoe0
- Outcome
- adapted to the 32% SMC conditione0
- Qualifier
- In both yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both years, cultivar Sensho adapted to the 32% SMC condition”
t0“Genotypic Variation in Morphological and Physiological Characteristics of Rice (Oryza sativa L.) under Aerobic Conditions”
t1“flooded condition (control)”
Claim · model-written summary
Koshihikari did not adapt to aerobic rice cultivation, possibly owing to limited root growth and plasticity.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Koshihikarie0
- Outcome
- did not adapt to the aerobic rice systeme0
- Qualifier
- probably because of its limited root growth and lower root plasticitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Koshihikari did not adapt to the aerobic rice system, probably because of its limited root growth and lower root plasticity.”
t0“Genotypic Variation in Morphological and Physiological Characteristics of Rice (Oryza sativa L.) under Aerobic Conditions”
t1“flooded condition (control)”
Claim · model-written summary
Root traits correlated positively with water uptake.
- Taxon
- riceOryza sativae0
- Organ / stage
- roote0
- Outcome
- water uptakee0
- Direction
- positive correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The positive correlation between root traits and water uptake indicate that root traits are important for improving rice performance under an aerobic rice system.”
t0“Genotypic Variation in Morphological and Physiological Characteristics of Rice (Oryza sativa L.) under Aerobic Conditions”
t1“flooded condition (control)”
The same questions in other papers
soil water · growth · Oryza sativa (rice)Positive and negative results
18 papers in the same direction as this paper · 21 in the opposite direction
- positive
- positive
- positive
36 papers more in this group
See all 40 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.