Abstract
Drought is a significant factor contributing to the reduction in rice production. Therefore, this study aimed to examine the morphological, physiological, and yield responses of rice under lowland and upland planting methods subjected to drought treatment. The experiment was conducted in a greenhouse using a split-plot design with 3 replications. The main plot was water regime treatments, while the subplot was rice varieties. Water regimes included 4 levels, namely lowland planting method (T1), lowland planting method with drought treatment (T2), upland planting method (T3), and upland planting method with drought treatment (T4). Drought stress treatment was applied at 55 DAP (days after planting) by stopping watering until the plants showed a leaf rolling score of level 9 (leaf fully rolled) based on standard evaluation system for rice by IRRI. The plant materials used were 4 rice varieties, such as IPB 3S, Inpago 10, IPB 9G, and IR 64 respectively. The results showed that water regime treatments led to reduced plant height, root volume, and root weight. In upland planting method, IPB 9G produced the longest root length of 78.0 cm. Furthermore, the number of productive tillers and root length showed no significant differences under the treatment. Chlorophyll content, stomatal conductance, and intercellular CO2 levels were significantly affected by drought. Flowering age, panicle length, grains per panicle, and the weight of 100 grains were also affected. Based on observation, Inpago 10 had a faster flowering age of 90.33 DAP. The highest panicle length, grains per panicle, and rice yield per pot were produced by IPB 9G, suggesting the potential for cultivation in lowland, upland, and drought-affected environments.
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Claims 12
Claim · model-written summary
Water regimes reduced rice plant height, root volume and root weight.
- Taxon
- rice
Oryza sativat0 - Treatment
- water regime treatmentse0
- Outcome
- plant height, root volume, and root weighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“water regime treatments led to reduced plant height, root volume, and root weight.”
Claim · model-written summary
IPB 9G had the longest root length, 78.0 cm, under upland planting.
- Taxon
- riceOryza sativat0
- Material
- IPB 9Ge0
- Treatment
- upland planting methode0
- Outcome
- root lengthe0
- Direction
- longeste0
- Value
- 78.0 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“In upland planting method, IPB 9G produced the longest root length of 78.0 cm.”
Claim · model-written summary
The number of productive tillers did not differ significantly under treatment.
- Taxon
- riceOryza sativat0
- Treatment
- the treatmente0
- Outcome
- number of productive tillerse0
- Direction
- no significant differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“the number of productive tillers and root length showed no significant differences under the treatment.”
Claim · model-written summary
Root length did not differ significantly under treatment.
- Taxon
- riceOryza sativat0
- Treatment
- the treatmente0
- Outcome
- root lengthe0
- Direction
- no significant differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“the number of productive tillers and root length showed no significant differences under the treatment.”
Claim · model-written summary
Drought significantly affected chlorophyll content, stomatal conductance and intercellular CO2.
- Taxon
- riceOryza sativat0
- Treatment
- droughte0
- Outcome
- Chlorophyll content, stomatal conductance, and intercellular CO2 levelse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Chlorophyll content, stomatal conductance, and intercellular CO2 levels were significantly affected by drought.”
Claim · model-written summary
The treatments affected flowering age.
- Taxon
- riceOryza sativat0
- Outcome
- Flowering agee0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Flowering age, panicle length, grains per panicle, and the weight of 100 grains were also affected.”
Claim · model-written summary
The treatments affected panicle length, grains per panicle and 100-grain weight.
- Taxon
- riceOryza sativat0
- Outcome
- panicle length, grains per panicle, and the weight of 100 grainse0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Flowering age, panicle length, grains per panicle, and the weight of 100 grains were also affected.”
Claim · model-written summary
Inpago 10 flowered earlier at 90.33 DAP.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Inpago 10 had a faster flowering age of 90.33 DAP.”
Claim · model-written summary
IPB 9G had the highest panicle length.
- Taxon
- riceOryza sativat0
- Material
- IPB 9Ge0
- Outcome
- highest panicle lengthe0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“The highest panicle length, grains per panicle, and rice yield per pot were produced by IPB 9G”
Claim · model-written summary
IPB 9G had the highest grains per panicle.
- Taxon
- riceOryza sativat0
- Material
- IPB 9Ge0
- Outcome
- grains per paniclee0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“The highest panicle length, grains per panicle, and rice yield per pot were produced by IPB 9G”
Claim · model-written summary
IPB 9G had the highest rice yield per pot.
- Taxon
- riceOryza sativat0
- Material
- IPB 9Ge0
- Outcome
- rice yield per pote0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“The highest panicle length, grains per panicle, and rice yield per pot were produced by IPB 9G”
Claim · model-written summary
The authors suggest IPB 9G for cultivation across lowland, upland and drought-affected environments.
- Taxon
- riceOryza sativat0
- Material
- IPB 9Ge1
- Outcome
- potential for cultivation in lowland, upland, and drought-affected environmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“suggesting the potential for cultivation in lowland, upland, and drought-affected environments.”
e1“were produced by IPB 9G, suggesting”
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