Abstract
Yield decline is the major concern in tropical aerobic rice ( Oryza sativa L.). Both biotic and abiotic factors were responsible for this phenomenon. No analytical information on actual causes was reported taking into account of responses of root to water stress conditions. In a field experiment at the Central Rice Research Institute, India during 2009 and 2010, five rice genotypes were grown under two soil water conditions, aerobic and semi‐aerobic condition, for better understanding of yield penalty vis‐à‐vis yield stability. Results showed aerobic condition significantly inhibited structural development of root and caused significant variation in biochemical root traits accounting for higher concentration of hydrogen peroxide (24.6%) and proline (20%), and lower concentration of total soluble protein (20%) that resulted in 17% yield decline than semi‐aerobic condition. Applying supplementary irrigation at semi‐aerobic condition achieved 21% more grain yield compared with aerobic condition due to 21%, 8.3, and 10.4% more root biomass, root volume, and root/shoot ratio, respectively. Interaction of genotypes with soil water conditions revealed that at aerobic condition, better performance could be expected in ‘Apo’(4.0 t ha −1 ) and ‘IR 74371‐3‐1‐1’ (3.80 t ha −1 ) with less yield decline (7.0–9.5%); supplementary irrigation enhanced their grain yield (4.3–4.4 t ha −1 ) at semi‐aerobic condition. Therefore, detrimental impact of physical and biochemical root traits’ changes on yield decline in aerobic rice could be alleviated with supplementary irrigation at critical growth stages under semi‐aerobic condition without compromising with water productivity.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 13
Claim · model-written summary
Aerobic conditions inhibited rice root structural development.
- Taxon
- rice
Oryza sativae7 - Treatment
- aerobic conditione0
- Outcome
- structural development of roote0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“aerobic condition significantly inhibited structural development of root”
e7“aerobic rice ( Oryza sativa L.)”
Claim · model-written summary
Aerobic conditions raised root hydrogen peroxide concentration by 24.6%.
- Taxon
- riceOryza sativae7
- Treatment
- aerobic conditione1
- Outcome
- concentration of hydrogen peroxidee0
- Direction
- highere0
- Value
- 24.6%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher concentration of hydrogen peroxide (24.6%)”
e7“aerobic rice ( Oryza sativa L.)”
e1“aerobic condition significantly inhibited”
Claim · model-written summary
Aerobic conditions raised root proline concentration by 20%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher concentration of hydrogen peroxide (24.6%) and proline (20%)”
e7“aerobic rice ( Oryza sativa L.)”
e1“aerobic condition significantly inhibited”
Claim · model-written summary
Aerobic conditions lowered root soluble protein concentration by 20%.
- Taxon
- riceOryza sativae7
- Treatment
- aerobic conditione1
- Outcome
- concentration of total soluble proteine0
- Direction
- lowere0
- Value
- 20%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lower concentration of total soluble protein (20%)”
e7“aerobic rice ( Oryza sativa L.)”
e1“aerobic condition significantly inhibited”
Claim · model-written summary
Aerobic conditions reduced yield by 17% versus semi-aerobic conditions.
- Taxon
- riceOryza sativae7
- Treatment
- aerobic conditione1
- Outcome
- yielde0
- Direction
- declinee0
- Value
- 17%e0
- Comparator
- semi‐aerobic conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“17% yield decline than semi‐aerobic condition”
e7“aerobic rice ( Oryza sativa L.)”
e1“aerobic condition significantly inhibited”
Claim · model-written summary
Supplementary irrigation at semi-aerobic conditions raised grain yield by 21% versus aerobic conditions.
- Taxon
- riceOryza sativae7
- Treatment
- supplementary irrigation at semi‐aerobic conditione0
- Outcome
- grain yielde0
- Direction
- moree0
- Value
- 21%e0
- Comparator
- aerobic conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applying supplementary irrigation at semi‐aerobic condition achieved 21% more grain yield compared with aerobic condition”
e7“aerobic rice ( Oryza sativa L.)”
Claim · model-written summary
Supplementary irrigation increased root biomass by 21%.
- Taxon
- riceOryza sativae7
- Treatment
- supplementary irrigation at semi‐aerobic conditione1
- Outcome
- root biomasse0
- Direction
- moree0
- Value
- 21%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“21%, 8.3, and 10.4% more root biomass, root volume, and root/shoot ratio, respectively.”
e7“aerobic rice ( Oryza sativa L.)”
e1“Applying supplementary irrigation at semi‐aerobic condition”
Claim · model-written summary
Supplementary irrigation increased root volume by 8.3%.
- Taxon
- riceOryza sativae7
- Treatment
- supplementary irrigation at semi‐aerobic conditione1
- Outcome
- root volumee0
- Direction
- moree0
- Value
- 8.3e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“21%, 8.3, and 10.4% more root biomass, root volume, and root/shoot ratio, respectively.”
e7“aerobic rice ( Oryza sativa L.)”
e1“Applying supplementary irrigation at semi‐aerobic condition”
Claim · model-written summary
Supplementary irrigation increased root-to-shoot ratio by 10.4%.
- Taxon
- riceOryza sativae7
- Treatment
- supplementary irrigation at semi‐aerobic conditione1
- Outcome
- root/shoot ratioe0
- Direction
- moree0
- Value
- 10.4%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“21%, 8.3, and 10.4% more root biomass, root volume, and root/shoot ratio, respectively.”
e7“aerobic rice ( Oryza sativa L.)”
e1“Applying supplementary irrigation at semi‐aerobic condition”
Claim · model-written summary
‘Apo’ yielded 4.0 t ha −1 under aerobic conditions.
- Taxon
- riceOryza sativae7
- Material
- ‘Apo’e0
- Outcome
- better performancee0
- Direction
- bettere0
- Value
- 4.0 t ha −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at aerobic condition, better performance could be expected in ‘Apo’(4.0 t ha −1 ) and ‘IR 74371‐3‐1‐1’ (3.80 t ha −1 ) with less yield decline (7.0–9.5%)”
e7“aerobic rice ( Oryza sativa L.)”
Claim · model-written summary
‘IR 74371‐3‐1‐1’ yielded 3.80 t ha −1 under aerobic conditions.
- Taxon
- riceOryza sativae7
- Material
- ‘IR 74371‐3‐1‐1’e0
- Outcome
- better performancee0
- Direction
- bettere0
- Value
- 3.80 t ha −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at aerobic condition, better performance could be expected in ‘Apo’(4.0 t ha −1 ) and ‘IR 74371‐3‐1‐1’ (3.80 t ha −1 ) with less yield decline (7.0–9.5%)”
e7“aerobic rice ( Oryza sativa L.)”
Claim · model-written summary
Supplementary irrigation enhanced grain yield of Apo and IR 74371‐3‐1‐1 to 4.3–4.4 t ha −1.
- Taxon
- riceOryza sativae7
- Material
- ‘Apo’e1
- Treatment
- supplementary irrigatione0
- Outcome
- grain yielde0
- Direction
- enhancede0
- Value
- 4.3–4.4 t ha −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“supplementary irrigation enhanced their grain yield (4.3–4.4 t ha −1 ) at semi‐aerobic condition.”
e7“aerobic rice ( Oryza sativa L.)”
e1“‘Apo’(4.0 t ha −1 ) and ‘IR 74371‐3‐1‐1’”
Claim · model-written summary
The authors suggest supplementary irrigation at critical stages under semi-aerobic conditions to alleviate yield decline.
- Taxon
- riceOryza sativae7
- Treatment
- supplementary irrigation at critical growth stagese0
- Outcome
- yield declinee0
- Qualifier
- without compromising with water productivitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield decline in aerobic rice could be alleviated with supplementary irrigation at critical growth stages under semi‐aerobic condition without compromising with water productivity.”
e7“aerobic rice ( Oryza sativa L.)”
The same questions in other papers
irrigation · growth · Oryza sativa (rice)Positive and negative results
221 papers in the same direction as this paper · 62 in the opposite direction · 7 reporting no difference from an alternative
- negative
- negative
- negative
287 papers more in this group
See all 291 papers →irrigation · yield · Oryza sativa (rice)Positive and negative results
905 papers in the same direction as this paper · 201 in the opposite direction · 64 reporting no difference from an alternative
- positive
- negative
- negative
1,167 papers more in this group
See all 1,171 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.